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Alrosan M, Madi Almajwal A, Al-Qaisi A, Gammoh S, Alu'datt MH, Al Qudsi FR, Tan TC, Razzak Mahmood AA, Bani-Melhem K. Trehalose-conjugated lentil-casein protein complexes prepared by structural interaction: Effects on water solubility and protein digestibility. Food Chem 2024; 447:138882. [PMID: 38452537 DOI: 10.1016/j.foodchem.2024.138882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 01/29/2024] [Accepted: 02/25/2024] [Indexed: 03/09/2024]
Abstract
The two limiting factors for lentil protein utilization are water solubility and digestibility. In this study, we utilized two non-thermal techniques: (1) protein complexation of lentil and casein proteins using the pH-shifting method and (2) protein conjugation with trehalose to produce trehalose-conjugated lentil-casein protein complexes (T-CPs) with enhanced water solubility and digestibility. The protein structure of the T-CPs was analyzed for secondary protein structure, conformation protein, and tertiary protein structure using Fourier-transform infrared, UV, and fluorescence spectroscopies, respectively. The surface hydrophobicity and surface charge of T-CPs solution at pH 7.0 changed significantly (P < 0.05). Using these two non-thermal techniques, the water solubility and digestibility of T-CPs increased significantly (P < 0.05) by 85 to 89 % and 80 to 85 %, respectively. The results of this study suggested that these non-thermal techniques could enhance the surface and protein structure properties, improving water solubility and digestibility.
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Affiliation(s)
- Mohammad Alrosan
- Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia; Applied Science Research Center, Applied Science Private University, Al-Arab St. 21, Amman 11931, Jordan; College of Health Science, QU Health, Qatar University, Doha P.O. Box 2713, Qatar; Department of Nutrition and Food Science, Faculty of Agriculture, Jerash University, Jerash, Jordan.
| | - Ali Madi Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
| | - Ali Al-Qaisi
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan; Department of Agricultural Biotechnology, Faculty of Agricultural Sciences and Technology, Palestine Technical University-Kadoorie (PTUK), Jaffa Street, Tulkarm P.O. Box 7, Palestine
| | - Sana Gammoh
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Muhammad H Alu'datt
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan; Department of Food Science & Nutrition, College of Life Sciences, Kuwait University, P.O. Box. 5969, Safat 13060, Kuwait
| | - Farah R Al Qudsi
- Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Thuan-Chew Tan
- Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ammar A Razzak Mahmood
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Baghdad, Baghdad, Bab-Al-Mouadam 10001, Iraq
| | - Khalid Bani-Melhem
- Water Technology Unit (WTU), Center for Advanced Materials (CAM), Qatar University, P.O. Box 2713, Doha, Qatar
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2
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Dong Z, Song B, Ma H, Gao X, Zhang W, Yuan J. A strategy to enhance the water solubility of luminescent β-diketonate-Europium(III) complexes for time-gated luminescence bioassays. Talanta 2024; 274:126000. [PMID: 38608630 DOI: 10.1016/j.talanta.2024.126000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 03/19/2024] [Accepted: 03/26/2024] [Indexed: 04/14/2024]
Abstract
Luminescent β-diketonate-europium(III) complexes have been found a wide range of applications in time-gated luminescence (TGL) bioassays, but their poor water solubility is a main problem that limits their effective uses. In this work we propose a simple and general strategy to enhance the water solubility of luminescent β-diketonate-europium(III) complexes that permits facile synthesis and purification. By introducing the fluorinated carboxylic acid group into the structures of β-diketone ligands, two highly water-soluble and luminescent Eu3+ complexes, PBBHD-Eu3+ and CPBBHD-Eu3+, were designed and synthesized. An excellent solubility exceeding 20 mg/mL for PBBHD-Eu3+ was found in a pure aqueous buffer, while it also displayed strong and long-lived luminescence (quantum yield φ = 26%, lifetime τ = 0.49 ms). After the carboxyl groups of PBBHD-Eu3+ were activated, the PBBHD-Eu3+-labeled streptavidin-bovine serum albumin (SA-BSA) conjugate was prepared, and successfully used for the immunoassay of human α-fetoprotein (AFP) and the imaging of an environmental pathogen Giardia lamblia under TGL mode, which demonstrated the practicability of PBBHD-Eu3+ for highly sensitive TGL bioassays. The carboxyl groups of PBBHD can also be easily derivatized with other reactive chemical groups, which enables PBBHD-Eu3+ to meet diverse requirements of biolabeling technique, to provide new opportunities for developing functional europium(III) complex biolabels serving for TGL bioassays.
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Affiliation(s)
- Zhiyuan Dong
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Bo Song
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China.
| | - Hua Ma
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Xiaona Gao
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Wenzhu Zhang
- School of Chemistry, Dalian University of Technology, Dalian, 116024, China
| | - Jingli Yuan
- College of Life Science, Dalian Minzu University, 18 Liaohe West Road, Jinzhou New District, Dalian, 116600, China.
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Alrosan M, Almajwal AM, Al-Qaisi A, Gammoh S, Alu'datt MH, Al Qudsi FR, Tan TC, Razzak Mahmood AA, Maghaydah S, Al-Massad M. Evaluation of digestibility, solubility, and surface properties of trehalose-conjugated quinoa proteins prepared via pH shifting technique. Food Chem X 2024; 22:101397. [PMID: 38711772 PMCID: PMC11070818 DOI: 10.1016/j.fochx.2024.101397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 03/24/2024] [Accepted: 04/16/2024] [Indexed: 05/08/2024] Open
Abstract
Soluble trehalose-conjugated quinoa proteins (T-QPs) were effectively prepared using the pH-shifting mechanism. The structural properties of the T-QPs were evaluated using a comparative evaluation, which included analyzing the amide I, surface charge and hydrophobicity, protein conformation, thermal stability, and protein structures. The results suggested that the development of the T-QPs was influenced mainly by no-covalent bonds. These interactions significantly influenced (P < 0.05) the quinoa proteins' conformation and higher-protein structure. T-QP had significant (P < 0.05) surface properties. Furthermore, the T-QPs exhibited improved solubility (79.7 to 88.4%) and digestibility (79.8 to 85.1%). Therefore, quinoa protein proved an excellent plant-based protein for conjugation with disaccharides. These findings provide significant insight into the potential development of modified proteins with enhanced solubility and digestibility by creating trehalose-conjugated plant-based proteins.
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Affiliation(s)
- Mohammad Alrosan
- Department of Food Science and Nutrition, Faculty of Agriculture, Jerash University, Jerash, Jordan
- College of Health Sciences, QU Health, Qatar University, Doha, P.O. Box 2713, Qatar
- Applied Science Research Center, Applied Science Private University, Al-Arab St. 21, Amman 11931, Jordan
| | - Ali Madi Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia
| | - Ali Al-Qaisi
- Department of Agricultural Biotechnology, Faculty of Agricultural Sciences and Technology, Palestine Technical University-Kadoorie (PTUK), Ja22a Street, Tulkarm, P.O. Box 7, Palestine
| | - Sana Gammoh
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
| | - Muhammad H. Alu'datt
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
- Department of Food Science & Nutrition, College of Life Sciences, Kuwait University, P.O. Box. 5969, Safat 13060, Kuwait
| | - Farah R. Al Qudsi
- Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
| | - Thuan-Chew Tan
- Food Technology Division, School of Industrial Technology, Universiti Sains Malaysia, 11800 USM, Penang, Malaysia
| | - Ammar A. Razzak Mahmood
- Department of Pharmaceutical Chemistry, College of Pharmacy-University of Baghdad, Baghdad, Bab-Al-Mouadam 10001, Iraq
| | - Sofyan Maghaydah
- Department of Nutrition and Food Technology, Faculty of Agriculture, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan
- Department of Human Nutrition and Dietetics, College of Health Sciences, Abu Dhabi University, Zayed City, Abu Dhabi, P.O. Box 59911, United Arab Emirates
| | - Motasem Al-Massad
- Department of Animal Production and Protection, Faculty of Agriculture, Jerash University, 26250, Jerash, Jordan
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Li SM, Zeng WZ, Chung CY, Uramaru N, Huang GJ, Wong FF. Synthesis, physicochemical characterization, and investigation of anti-inflammatory activity of water-soluble PEGylated 1,2,4-Triazoles. Bioorg Chem 2024; 147:107312. [PMID: 38599053 DOI: 10.1016/j.bioorg.2024.107312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/13/2024] [Accepted: 03/25/2024] [Indexed: 04/12/2024]
Abstract
A series of water-soluble PEGylated 1,2,4-triazoles 5-8 were successfully synthesized from methyl 5-(chloromethyl)-1-aryl-1H-1,2,4-triazole-3-carboxylates 1. All of the water-soluble PEGylated 1,2,4-triazoles were characterized by FT-IR and 1H NMR spectroscopy. The solubility, in vitro plasma stability, and anti-inflammatory activity were also determined and compared to original methyl 5-(halomethyl)-1-aryl-1H-1,2,4-triazole-3-carboxylates. For SAR study, all PEGylated 1,2,4-triazoles 5-8 performed potential anti-inflammatory activity on LPS-induced RAW 264.7 cells (IC50 = 3.42-7.81 μM). Moreover, the western blot result showed PEGylated 1,2,4-triazole 7d performed 5.43 and 2.37 folds inhibitory activity over iNOS and COX-2 expressions. On the other hand, the cell viability study revealed PEGylated 1,2,4-triazoles 7 and 8 with PEG molecular weight more than 600 presented better cell safety (cell viability > 95 %). Through the solubility and in vitro plasma stability studies, PEGylated 1,2,4-triazoles 7a-d exhibited higher hydrophilicity and prolonged 2.01 folds of half-life in compound 7d. Furthermore, the in vivo anti-inflammatory and gastric safety results indicated PEGylated 1,2,4-triazole 7d more effectively decreased the inflammatory response in edema and COX-2 expression and exhibited higher gastric safety than Indomethacin. Following the in vitro and in vivo study results, PEGylated 1,2,4-triazole 7d possessed favorable solubility, plasma stability features, safety, and significant anti-inflammatory activity to become the potential water-soluble anti-inflammatory candidate.
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Affiliation(s)
- Sin-Min Li
- Institute of Translation Medicine and New Drug Development, China Medical University, Taichung 40402, Taiwan
| | - Wei-Zheng Zeng
- Department of Nutrition, China Medical University, Taichung 406040, Taiwan
| | - Cheng-Yen Chung
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan
| | - Naoto Uramaru
- Department of Environmental Science, Nihon Pharmaceutical University, Komuro Inamachi Kita-adachi-gun, Saitama-ken 10281, Japan
| | - Guan-Jhong Huang
- Department of Chinese Pharmaceutical Sciences and Chinese Medicine Resources, China Medical University, Taichung 40402, Taiwan; Department of Food Nutrition and Healthy Biotechnology, Asia University, Taichung 413, Taiwan.
| | - Fung Fuh Wong
- School of Pharmacy, China Medical University, Taichung 40402, Taiwan.
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5
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Thirumalaivasan N, Kanagaraj K, Logesh K, Chandrasekaran S, Kumar S, Subramanian R, Senthilkumar N, Kumar A, Angadi VJ, A Al-Kahtani A. Exploring luminescent carbon dots derived from syrup bottle waste and curcumin for potential antimicrobial and bioimaging applications. Chemosphere 2024; 354:141592. [PMID: 38467196 DOI: 10.1016/j.chemosphere.2024.141592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 02/03/2024] [Accepted: 02/29/2024] [Indexed: 03/13/2024]
Abstract
In this study, we utilized a navel hybrid material, prepared by fusing fluorescent Carbon Dots SyCDs, derived from syrup bottles, with curcumin. This innovative approach not only offers significant advancements in antimicrobial activity and bioimaging but also represents a stride in sustainable and eco-friendly nanotechnology. The core of our study is the development of an efficient, cost-effective, and environmentally conscious method for synthesizing SyCDs. This is achieved by repurposing waste syrup bottles, thus addressing the pressing issue of plastic waste. The incorporation of curcumin, renowned for its biological properties, enhances the luminescent characteristics of SyCDs and augments their functionality. This combination overcomes the inherent limitations of curcumin when used in isolation. The hybrid material exhibits enhanced antimicrobial properties and proves to be a potent alternative to conventional fluorescent dyes for bioimaging, marking a substantial leap in the field of sustainable nanomaterials. Our work not only demonstrates the versatile applications of luminescent SyCDs in health and environmental science but also underscores the potential of sustainable approaches in addressing global environmental challenges. This study, represents a significant contribution to the domain of sustainable nanotechnology, highlighting the transformative power of integrating waste management with advanced material science.
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Affiliation(s)
- Natesan Thirumalaivasan
- Department of Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Tamil Nadu, Chennai, 600077, India
| | - Kuppusamy Kanagaraj
- Center for Supramolecular Chemistry & Catalysis and Department of Chemistry, College of Science, Shanghai University, Shanghai, 200444, China
| | - Kamaraj Logesh
- Department of Mechanical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Chennai, Tamil Nadu, India
| | - Sridhar Chandrasekaran
- School of Electronics Engineering, Vellore Institute of Technology, Chennai, Tamil Nadu, India
| | - Sandeep Kumar
- Centre for Research Impact and Outcomes, Chitkara University, Rajpura, Punjab, India
| | - Raghunandhakumar Subramanian
- Cancer and Stem Cell Research Lab, Department of Pharmacology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Chennai, 600077, Tamil Nadu, India
| | - Nangan Senthilkumar
- Department of Chemistry, Graphic Era (Deemed to be University), Bell Road, Clement Town, Dehradun, Uttarakhand, India.
| | - Ashok Kumar
- Chitkara Centre for Research and Development, Chitkara University, Himachal Pradesh,174103, India
| | | | - Abdullah A Al-Kahtani
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, 11451, Riyadh, Saudi Arabia.
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6
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Nagano K, Nakao T, Takeda M, Hirai H, Maekita H, Nakamura M, Imakawa N, Egawa A, Fujiwara T, Gao JQ, Kinoshita K, Sakata M, Nishino M, Yamashita T, Yoshida T, Harada K, Tachibana K, Doi T, Hirata K, Tsujino H, Higashisaka K, Tsutsumi Y. Polyglycerol fatty acid ester contributes to the improvement and maintenance of water solubility of amorphous curcumin by suppressing the intermolecular interaction and the diffusion rate of curcumin. Food Chem 2024; 437:137866. [PMID: 37931447 DOI: 10.1016/j.foodchem.2023.137866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/15/2022] [Accepted: 10/24/2023] [Indexed: 11/08/2023]
Abstract
Curcumin (CUR), a polyphenol, is an attractive component of functional foods, owing to various physiological activities. However, CUR is highly hydrophobic, insoluble in water, and difficult to absorb in the body. Here, we report an amorphous CUR formulation containing the dispersant polyglycerol fatty acid ester (PGFE), demonstrating high and stable water solubility. Improved water solubility enhanced the absorbability of CUR in our amorphous formulation along with enhanced triglyceride inhibition, compared to that in a commercial formulation. Nuclear Overhauser effect spectroscopy (NOESY) analysis revealed that PGFE reduced CUR-CUR interaction, resulting in higher dispersion and improved solubility of CUR. Taylor dispersion analysis showed a lower diffusion coefficient of CUR in the highly water-soluble formulation (with PGFE) than that in the low water-soluble formulation (without PGFE), which prevents recontact and recrystallization of CUR, which is trapped by PGFE. Overall, the amorphous CUR with high solubility could be used as a promising functional food.
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Affiliation(s)
- Kazuya Nagano
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama, Wakayama 640-8156, Japan.
| | - Tomohiro Nakao
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; San-Ei Gen F. F. I., Inc, 1-1-11 Sanwa-cho, Toyonaka, Osaka 561-8588, Japan
| | - Mariko Takeda
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Haruna Hirai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hikaru Maekita
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Michiko Nakamura
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Naoki Imakawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Ayako Egawa
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Toshimichi Fujiwara
- Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jian-Qing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, PR China
| | - Keigo Kinoshita
- San-Ei Gen F. F. I., Inc, 1-1-11 Sanwa-cho, Toyonaka, Osaka 561-8588, Japan
| | - Makoto Sakata
- San-Ei Gen F. F. I., Inc, 1-1-11 Sanwa-cho, Toyonaka, Osaka 561-8588, Japan
| | - Masayuki Nishino
- San-Ei Gen F. F. I., Inc, 1-1-11 Sanwa-cho, Toyonaka, Osaka 561-8588, Japan
| | - Takuya Yamashita
- School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama, Wakayama 640-8156, Japan
| | - Takuya Yoshida
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kazuo Harada
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Keisuke Tachibana
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takefumi Doi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kazumasa Hirata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama, Wakayama 640-8156, Japan
| | - Hirofumi Tsujino
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; The Museum of Osaka University, 1-13 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Kazuma Higashisaka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Institute for Advanced Co-Creation Studies, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yasuo Tsutsumi
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan; Graduate School of Medicine, Osaka University, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan; Global Center for Medical Engineering and Informatics, Osaka University, 1-6, Yamadaoka, Suita, Osaka 565-0871, Japan.
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7
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Roy JK, Ahn HW, Lee J, Kim JH, Yoo SH, Kim YW. Production of highly water-soluble genistein α-diglucoside using an engineered O-α-glycoligase with enhanced transglycosylation activity and altered substrate specificity. Food Chem 2024; 437:137898. [PMID: 37924766 DOI: 10.1016/j.foodchem.2023.137898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 10/19/2023] [Accepted: 10/27/2023] [Indexed: 11/06/2023]
Abstract
Genistein is one of isoflavones, showing various biological functions for human health. MalA-D416A, termed O-α-glycoligase, is an acid/base catalytic residue-deficient mutant of a α-glucosidase from Sulfolobus solfataricus, synthesizing genistein 7-O-α-glucoside using α-glucosyl fluoride as the donor substrate. Through mutagenesis toward MalA-D416A, an O-α-glycoligase variant with two mutations (D416R and Q450S) was identified as a biocatalyst with a 58.8-fold enhanced catalytic efficiency for genistein compared to the parent enzyme. The use of a 2:1 ratio of α-glucosyl fluoride and genistein at pH 9 facilitated the synthesis of genistein 7,4'-O-α-diglucoside by MalA-D416R/Q450S. The α-diglucoside exhibited 2,459-fold improved water solubility compared to genistein itself as well as facile deglycosylation by the intestinal α-glucosidase from rat, suggesting the potential of the α-diglucoside for improved bioavailability in human intestine. Through molecular docking analyses the modulation of the active site conformation by these mutations was expected for proper binding of both genistein and the monoglucoside.
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Affiliation(s)
- Jetendra Kumar Roy
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea
| | - Hee-Won Ahn
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea
| | - Jaeick Lee
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea
| | - Jin-Hyo Kim
- Department of Agricultural Chemistry, Gyeongsang National University, Jinju 52727, Republic of Korea
| | - Sang-Ho Yoo
- Department of Food Science & Biotechnology and Carbohydrate Bioproduct Research Center, Sejong University, Seoul 05006, Republic of Korea
| | - Young-Wan Kim
- Department of Food and Biotechnology, Korea University, Sejong 30019, Republic of Korea,.
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8
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Zhao W, Zou W, Liu F, Zhou F, Altun NE. Molecular dynamics simulations of the solubility and conformation change of chitosan grafted polyacrylamide: Impact of grafting rate. J Mol Graph Model 2024; 126:108660. [PMID: 37956531 DOI: 10.1016/j.jmgm.2023.108660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 10/24/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023]
Abstract
Graft modification is an effective approach to improve the water solubility and molecular weight of chitosan. This work investigated the effect of grafting rate on water solubility of chitosan-grafted polyacrylamide (Chi-g-PAM) using molecular dynamics simulations. The intramolecular and intermolecular interaction between Chi-g-PAM with the grafting rate of 100%-250% and water together with the conformation change were analyzed by radial distribution function (RDF), radius of gyration, solvation free energy (ΔGSFE), mean square displacement, diffusion coefficient and shear viscosity. The results showed that the intramolecular hydrogen bonding of Chi-g-PAM was the dominant factor affecting its water solubility. While the grafting rate of Chi-g-PAM increased from 100% to 250%, the RDF of Chi-g-PAM decreased from 5.39 to 3.57 between O-H at 2.0 Å and 2.60 to 1.30 between N-H at 2.1 Å. The interaction between Chi-g-PAM and water increased with grafting rate as the absolute value of ΔGSFE for Chi-g-PAM increased from 432.917 kcal/mol to 858.749 kcal/mol. The solubility of Chi-g-PAM in acidic solution was much better than that of Chi-g-PAM in aqueous solution. Our work on the fundamental insights into the effect of grafted molecular structure of chitosan-based copolymer on its solubility will benefit the development of environmentally friendly chitosan-based flocculants.
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Affiliation(s)
- Wei Zhao
- State Key Laboratory of High-Efficient Mining and Safety of Metal Mines of Ministry of Education, University of Science and Technology Beijing, Beijing 100083, China; State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, China
| | - Wenjie Zou
- State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, China; School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China.
| | - Fengyang Liu
- School of Civil and Resources Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Fang Zhou
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, 430073, China
| | - N Emre Altun
- Middle East Technical University, Mining Engineering Department, Ankara, Turkey
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9
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Choi Y, Lee H, Song JY, Baek M, Mun S. Development of polysaccharide-complexed nano-sized rice protein dispersion. Food Sci Biotechnol 2024; 33:431-439. [PMID: 38222904 PMCID: PMC10786790 DOI: 10.1007/s10068-023-01350-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/03/2023] [Accepted: 05/17/2023] [Indexed: 01/16/2024] Open
Abstract
The objective of this study was to improve water solubility of the rice protein (RP) by forming complexes with anionic polysaccharides, such as sodium alginate (SA) and xanthan gum (XG). In addition, utilization of the RP complexes as an emulsifier was evaluated. The prepared RP-SA or RP-XG complexes were analyzed by measuring their particle size, ζ-potential, and water solubility as well as by confocal laser scanning microscopy. The formation of a complex between RP-SA and RP-XG improved the water solubility and dispersibility of RP over a wide range of pH values (3, 5, 7, and 9). Confocal fluorescence images showed that the aggregation of RP molecules was prevented by the formation of complexes between RP and polysaccharides. When soybean oil-in-water emulsions were prepared with complexes, RP-SA (ratio 4:1) and RP-XG(ratio 4:1) complex-stabilized emulsions were stable for 4 weeks of storage.
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Affiliation(s)
- Yongdoo Choi
- Research Institute, National Cancer Center, 323 Ilsan-ro, Goyang, Gyeonggi 10408 Republic of Korea
| | - Hyeri Lee
- Research Institute, National Cancer Center, 323 Ilsan-ro, Goyang, Gyeonggi 10408 Republic of Korea
| | - Ji-Young Song
- Department of R and D, Berry and Biofood Reaserch Institute, Gochang County, Jeonbuk 56417 Republic of Korea
| | - Manhee Baek
- Research Institute for Basic Sciences, Soonchunhyang University, Asan, Chungnam 31538 Republic of Korea
| | - Saehun Mun
- Department of Food Science and Nutrition, Soonchunhyang University, Asan, Chungnam 31538 Republic of Korea
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10
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Roy S, Rahman MM, Ferdous T, Likhon MNA, Jahan MS. Preparation of chitosan derivative and its application in papermaking. Int J Biol Macromol 2024; 256:128371. [PMID: 38013082 DOI: 10.1016/j.ijbiomac.2023.128371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 11/13/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023]
Abstract
To improve the paper strength, a number of resins and polymeric materials are being used, which is not environmental friendly and sustainable. Therefore, bio-based paper additives for the papermaking industry are essential. In this investigation, a water soluble biopolymer like carboxymethyl chitosan (CMCh) was prepared. The degree of substitution of the prepared CMCh was 2.49. The solubility of the prepared CMCh was 2.0 (w/v) % at 50 °C, and the conductivity increased with the increase of CMCh concentration in water. The prepared CMCh was applied as dry and wet strength agent of unrefined and refined softwood pulps. Both pulp increased dry and wet strength with increasing CMCh dose. An addition of 2.0 % CMCh increased dry strength by 125 % and wet strength by 293 % of unrefined pulp. On the other hand, the dry and wet tensile index of refined pulp increased from 59.48 N·m/g to 66.11 N·m/g and 2.48 N·m/g to 3.47 N·m/g, respectively, with the addition of 1.0 % CMCh. The CMCh was also used in filler modification. The precipitated calcium carbonate (PCC) modified with CMCh increased the ash content in paper with improved strength properties. The CMCh can be used in papermaking both for improving paper strength and filler retention.
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Affiliation(s)
- Shouvroneel Roy
- Pulp and Paper Research Division, Bangladesh Council of Scientific and Industrial Research Laboratories, Dr. Qudrat-i-Khuda Road, Dhaka 1205, Bangladesh; Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - M Mostafizur Rahman
- Pulp and Paper Research Division, Bangladesh Council of Scientific and Industrial Research Laboratories, Dr. Qudrat-i-Khuda Road, Dhaka 1205, Bangladesh
| | - Taslima Ferdous
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - M Nur Alam Likhon
- Department of Applied Chemistry and Chemical Engineering, University of Dhaka, Dhaka 1000, Bangladesh
| | - M Sarwar Jahan
- Pulp and Paper Research Division, Bangladesh Council of Scientific and Industrial Research Laboratories, Dr. Qudrat-i-Khuda Road, Dhaka 1205, Bangladesh.
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11
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He L, Liu C, Chen S, Zhang J, Gao M, Li L. Precursor-directed production of water-soluble red Monascus pigments with high thermal stability via azaphilic addition reaction-based semi-synthesis. Food Chem X 2023; 20:100940. [PMID: 38144809 PMCID: PMC10739767 DOI: 10.1016/j.fochx.2023.100940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 10/02/2023] [Accepted: 10/09/2023] [Indexed: 12/26/2023] Open
Abstract
Red Monascus pigments (MPs) are a large group of polyketides from the fungus Monascus which have been widely used as food colorants. In this study, a variety of red MPs congeners were prepared to explore promising water-soluble candidates for application in liquid food formulations. The results showed that by combining the two-stage, low-pH fermentation strategy with a downstream purification step of fractional crystallization, precursors of red MPs, namely monascorubrin and rubropunctatin, were obtained with a purity of 91.9%. Then, via the azaphilic addition reaction, 18 types of red MPs congeners carrying different amino acid moieties (MPs-aa) were semi-synthesized. Compared to rubropunctamine and monascorubramine, the water solubility, pH and thermal stability of MPs-aa were improved greatly. MPs-His, MPs-Phe, MPs-Tyr and MPs-Trp were identified to be the most resistant to pasteurization. These findings provide water-soluble red MPs candidates with high thermal stability and an attractive approach for their large scale production.
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Affiliation(s)
- Linman He
- College of Life Science, Yangtze University, Jingzhou 434025, China
| | - Cai Liu
- College of Life Science, Yangtze University, Jingzhou 434025, China
| | - Suo Chen
- College of Life Science, Yangtze University, Jingzhou 434025, China
| | - Jialan Zhang
- College of Animal Science, Yangtze University, Jingzhou 434025, China
| | - Mengxiang Gao
- College of Life Science, Yangtze University, Jingzhou 434025, China
- Institute of Food Science and Technology, Yangtze University, Jingzhou 434025, China
| | - Li Li
- College of Life Science, Yangtze University, Jingzhou 434025, China
- Institute of Food Science and Technology, Yangtze University, Jingzhou 434025, China
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12
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Sosnowska A, Mudlaff M, Gorb L, Bulawska N, Zdybel S, Bakker M, Peijnenburg W, Puzyn T. Expanding the applicability domain of QSPRs for predicting water solubility and vapor pressure of PFAS. Chemosphere 2023; 340:139965. [PMID: 37633602 DOI: 10.1016/j.chemosphere.2023.139965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 08/22/2023] [Accepted: 08/23/2023] [Indexed: 08/28/2023]
Abstract
This work aimed to verify whether it is possible to extend the applicability domain (AD) of existing QSPR (Quantitative Structure-Property Relationship) models by employing a strategy involving additional quantum-chemical calculations. We selected two published QSPR models: for water solubility, logSW, and vapor pressure, logVP of PFAS as case studies. We aimed to enlarge set of compounds used to build the model by applying factorial planning to plan the augmentation of the set of these compounds based on their structural features (descriptors). Next, we used the COSMO-RS model to calculate the logSW and logVP for selected chemicals. This allowed filling gaps in the experimental data for further training QSPR models. We improved the published models by significantly extending number of compounds for which theoretical predictions are reliable (i.e., extending the AD). Additionally, we performed external validation that had not been carried out in original models. To test effectiveness of the AD extension, we screened 4519 PFAS from NORMAN Database. The number of compounds outside the domain was reduced comparing the original model for both properties. Our work shows that combining physics-based methods with data-driven models can significantly improve the performance of predictions of phys-chem properties relevant for the chemical risk assessment.
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Affiliation(s)
| | | | - Leonid Gorb
- QSAR Lab, Trzy Lipy 3, 80-172, Gdańsk, Poland; Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo Str., 03680, Kyiv, Ukraine
| | | | | | - Martine Bakker
- National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands
| | - Willie Peijnenburg
- National Institute for Public Health and the Environment (RIVM), Bilthoven, the Netherlands; Institute of Environmental Sciences (CML), Leiden University, RA Leiden, 2300, the Netherlands
| | - Tomasz Puzyn
- QSAR Lab, Trzy Lipy 3, 80-172, Gdańsk, Poland; University of Gdansk, Faculty of Chemistry, Wita Stwosza 63, 80-308, Gdansk, Poland.
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13
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Kim EA, Lee YR, Lee EH, Jeong HM, Kang BS, Kim BH, Park SJ, Shim JH. Development and applications of enzymatic modified starch with high water solubility providing a continuous supply of glucose. Int J Biol Macromol 2023; 250:126107. [PMID: 37536417 DOI: 10.1016/j.ijbiomac.2023.126107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 05/30/2023] [Accepted: 07/31/2023] [Indexed: 08/05/2023]
Abstract
Amylopectin clusters (APCs) are produced by cyclodextrin glucanotransferase (EC 2.4.1.19). Their solubility rate in aqueous solution was found to be 16.7 %. The weight-average molecular weight of APCs is ∼105 Da, as determined by multiangle laser light scattering analysis. Side chain length analysis indicated that the relative proportions of side chains with a degree of polymerization in the ranges of 2-8 and 25-50 decreased and increased, respectively, during preparation of APCs. In the exercise experiment, the blood glucose level of rats was higher in the APC-treated group than in the groups treated with commercial carbohydrate supplement (CCD) and glucose. In the forced swimming test, the swimming time in the APC and CCD groups increased by 22.6 % and 31.1 %, respectively, compared with the glucose administration group. The insulin levels were also similar between the APC and CCD groups. However, the glycogen levels in the liver and muscles of mice were significantly higher in the APC group than control group. These results suggest that APCs could potentially enhance endurance when added to sports drinks.
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Affiliation(s)
- Eun-A Kim
- Department of Food Science and Nutrition, The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Republic of Korea.
| | - Ye-Rim Lee
- Department of Food Science and Nutrition, The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Republic of Korea.
| | - Eun-Hyeong Lee
- Department of Food Science and Nutrition, The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Republic of Korea.
| | - Hyun-Mo Jeong
- Department of Food Science and Nutrition, The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Republic of Korea.
| | - Byung Sik Kang
- Medience Co. Ltd., Chuncheon, Gangwon-do 24232, Republic of Korea.
| | - Byung-Hak Kim
- Medience Co. Ltd., Chuncheon, Gangwon-do 24232, Republic of Korea.
| | - Sang Jae Park
- Medience Co. Ltd., Chuncheon, Gangwon-do 24232, Republic of Korea
| | - Jae-Hoon Shim
- Department of Food Science and Nutrition, The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gangwon-do 24252, Republic of Korea.
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14
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Im AE, Eom S, Seong HJ, Kim H, Cho JY, Kim D, Lee JH, Yang KY, Nam SH. Enhancement of debitterness, water-solubility, and neuroprotective effects of naringin by transglucosylation. Appl Microbiol Biotechnol 2023; 107:6205-6217. [PMID: 37642718 DOI: 10.1007/s00253-023-12709-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/22/2023] [Accepted: 07/27/2023] [Indexed: 08/31/2023]
Abstract
Naringin found in citrus fruits is a flavanone glycoside with numerous biological activities. However, the bitterness, low water-solubility, and low bioavailability of naringin are the main issues limiting its use in the pharmaceutical and nutraceutical industries. Herein, a glucansucrase from isolated Leuconostoc citreum NY87 was used for trans-α-glucosylattion of naringin by using sucrose as substrate. Two naringin glucosides (O-α-D-glucosyl-(1'''' → 6″) naringin (compound 1) and 4'-O-α-D-glucosyl naringin (compound 2)) were purified and determined their structures by nuclear magnetic resonance. The optimization condition for the synthesis of compound 1 was obtained at 10 mM naringin, 200 mM sucrose, and 337.5 mU/mL at 28 °C for 24 h by response surface methodology method. Compound 1 and compound 2 showed 1896- and 3272 times higher water solubility than naringin. Furthermore, the bitterness via the human bitter taste receptor TAS2R39 displayed that compound 1 was reduced 2.9 times bitterness compared with naringin, while compound 2 did not express bitterness at 1 mM. Both compounds expressed higher neuroprotective effects than naringin on human neuroblastoma SH-SY5Y cells treated with 5 mM scopolamine based on cell viability and cortisol content. Compound 1 reduced acetylcholinesterase activity more than naringin and compound 2. These results indicate that naringin glucosides could be utilized as functional material in the nutraceutical and pharmaceutical industries. KEY POINTS: • A novel O-α-D-glucosyl-(1 → 6) naringin was synthesized using glucansucrase from L. citreum NY87. • Naringin glucosides improved water-solubility and neuroprotective effects on SH-SY5Y cells. • Naringin glucosides showed a decrease in bitterness on bitter taste receptor 39.
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Affiliation(s)
- Ae Eun Im
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, 61186, South Korea
| | - Sanung Eom
- Department of Biotechnology, Chonnam National University, Gwangju, 61186, South Korea
| | - Hyeon-Jun Seong
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, 61186, South Korea
| | - Hayeong Kim
- Institute of Food Industrialization, Institutes of Green Bioscience and Technology, Seoul National University, Gangwon-Do, 25354, South Korea
| | - Jeong-Yong Cho
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, 61186, South Korea
| | - Doman Kim
- Institute of Food Industrialization, Institutes of Green Bioscience and Technology, Seoul National University, Gangwon-Do, 25354, South Korea
- Graduate School of International Agricultural Technology, Seoul National University, Gangwon-Do, 25354, South Korea
| | - Junho H Lee
- Department of Biotechnology, Chonnam National University, Gwangju, 61186, South Korea
| | - Kwang-Yeol Yang
- Department of Applied Biology, College of Agriculture and Life Science, Chonnam National University, Gwangju, 61186, South Korea
| | - Seung-Hee Nam
- Department of Integrative Food, Bioscience and Biotechnology, Chonnam National University, Gwangju, 61186, South Korea.
- Institute of Agricultural and Life Science Technology, Chonnam National University, Gwangju, 61186, South Korea.
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15
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Alizadeh SR, Savadkouhi N, Ebrahimzadeh MA. Drug design strategies that aim to improve the low solubility and poor bioavailability conundrum in quercetin derivatives. Expert Opin Drug Discov 2023; 18:1117-1132. [PMID: 37515777 DOI: 10.1080/17460441.2023.2241366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 07/24/2023] [Indexed: 07/31/2023]
Abstract
INTRODUCTION Scientists are especially interested in polyphenols, particularly flavonoids. Quercetin, a flavonoid, has demonstrated various therapeutic properties, such as antioxidant, anti-diabetic, anti-hypertensive, and anti-carcinogenic activities. Different plant sources contain varying quantities and types of quercetin. However, quercetin's bioavailability is frequently low due to its low water solubility, molecular stability, and absorption characteristics. AREAS COVERED The primary goals of this review are related to the approaches for overcoming quercetin's limitations. Hence, the main tactics for structural modifications (addition of charged and polar groups, removing C2, C3 double bond or reducing aromaticity, disrupting intramolecular H-bond, and reducing crystal lattice stability) and drug delivery systems (cyclodextrin complexes, emulsions, nanoparticles, liposomes, etc.) were discussed to improve water solubility and bioavailability of quercetin. EXPERT OPINION From a tactical perspective, enhancing the solubility of compounds can be simplified through decreasing hydrophobic properties or crystalline stability. In addition, an essential field of study focuses on creating appropriate molecular carriers for substances with low water solubility. However, pharmacokinetics, potency, and toxicology are all impacted by the structural factors and physical characteristics that regulate solubility. Poor water solubility is still a major problem in drug discovery, and new methods are always in demand to overcome it.
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Affiliation(s)
- Seyedeh Roya Alizadeh
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Niloofar Savadkouhi
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Mohammad Ali Ebrahimzadeh
- Department of Medicinal Chemistry, School of Pharmacy and Pharmaceutical Sciences Research Center, Mazandaran University of Medical Sciences, Sari, Iran
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16
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Lee YR, Jeong HM, Kim JS, Kim EA, Lee EH, Shim JH. Enzymatic formation of cyclic maltooligosaccharides for the application of quercetin inclusion complex. Carbohydr Polym 2023; 310:120722. [PMID: 36925261 DOI: 10.1016/j.carbpol.2023.120722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/20/2023] [Accepted: 02/15/2023] [Indexed: 02/22/2023]
Abstract
To improve the applicability of quercetin (QCT), we produced a QCT and cycloamylose (CA-QCT) inclusion complex based on the cyclization activity of cyclodextrin glucanotransferase (CGTase; EC 2.4.1.19). The encapsulated QCT was purified using recycling preparative high-performance liquid chromatography, and its formation was analyzed using matrix-assisted laser desorption/ionization-time of flight mass spectrometry. The water solubility of CA-QCT was 55,000-fold higher than that of QCT. CA-QCT had 97 % stability for one week at pH 8 in a 4 °C water bath. According to a 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity assay, CA-QCT activity in aqueous solution was 24 times higher than that of an equal amount of QCT in aqueous solution. In an anti-inflammatory assay using lipopolysaccharide-induced RAW264.7 macrophages, CA-QCT in aqueous solution decreased nitric oxide production in a similar manner to QCT in dimethyl sulfoxide (DMSO). Additionally, even under aqueous conditions, CA-QCT more effectively inhibited the production of inflammatory mediators, such as interleukin-1β, interleukin-6, and cyclooxygenase, compared with QCT dissolved in DMSO.
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Affiliation(s)
- Ye-Rim Lee
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Hyun-Mo Jeong
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Ji-Soo Kim
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Eun-A Kim
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Eun-Hyeong Lee
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea
| | - Jae-Hoon Shim
- Department of Food Science and Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea; The Korean Institute of Nutrition, Hallym University, Hallymdaehak-gil 1, Chuncheon, Gwangwon-do 24252, Republic of Korea.
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17
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Choi I, Hong W, Lee JS, Han J. Influence of acetylation and chemical interaction on edible film properties and different processing methods for food application. Food Chem 2023; 426:136555. [PMID: 37301044 DOI: 10.1016/j.foodchem.2023.136555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 05/20/2023] [Accepted: 06/04/2023] [Indexed: 06/12/2023]
Abstract
This study developed sweet potato starch (SPS) based edible films and investigated several methods (acetylation, amidated pectin (AP), and CaCl2 use) to improve the edibility and different processing methods (casting and extruding) to package food possible in commercial use. Starch acetylation was conducted with up to 8 mL of acetic acid (A8) and improved the stretchability and solubility of the film. The AP addition [∼30 wt% (P3)] enhanced the film strength, further increasing solubility. CaCl2 addition [∼150 mg/g of AP (C3)] also positively influenced the film solubility and water barrier properties of the films. The SPS-A8P3C3 film showed 3.41 times higher solubility than the native SPS film. Both casted and extruded SPS-A8P3C3 films drastically dissolved in high-temperature water. When applied to oil packaging, two films could delay the lipid oxidation of the packaged samples. These results demonstrate the usability of edible packaging and extruded film for commercial use.
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Affiliation(s)
- Inyoung Choi
- Department of Food Science and Technology, University of California-Davis, Davis, CA 95616, USA
| | - Wootaek Hong
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jung-Soo Lee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jaejoon Han
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea; Department of Food Biosciences and Technology, College of Life Sciences and Biotechnology, Korea University, 145, Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea.
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18
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Lv D, Wang M, He W, Wu J, Liu X, Guan Y. Ultra-small magnetic Candida antarctica lipase B nanoreactors for enzyme synthesis of bixin-maltitol ester. Food Chem 2023; 421:136132. [PMID: 37094396 DOI: 10.1016/j.foodchem.2023.136132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 04/01/2023] [Accepted: 04/06/2023] [Indexed: 04/26/2023]
Abstract
Bixin has desirable bioactivities but poor water solubility, which limits its practical applications. Enzymatic transesterification of methyl to alditol groups in bixin by Candida antarctica lipase B (CALB) improves bixin water solubility. Herein, magnetic CALB nanoreactors with diameter of 11.7 nm and CALB layer thickness of 3.5 nm were developed by covalently linking CALB onto silicon covered Fe3O4 nanoparticles. The CALB loading capacity in nanoreactors achieved 30%. The Michaelis constant (Km) and maximum reaction rate of magnetic CALB nanoreactors were 56.1 mmol/L and 0.2 mmol/(L·min). Magnetic CALB nanoreactors could circularly catalyze bixin-maltitol ester synthesis and keep catalytic efficiency of 62.6% after eight repetitive enzymatic reactions. Additionally, the optimal bixin-maltitol ester synthesis procedure was heating bixin-maltitol mixture at molar ratio of 1:7 in anhydrous 2-methyl-2-butanol-dimethylsulfoxide (8:2, v/v) at 50 °C for 24 h. Bixin-maltitol ester showed improved water solubility at pH 5.5 and 7.0.
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Affiliation(s)
- Danyu Lv
- Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Muyun Wang
- Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wanjun He
- Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Jieli Wu
- Instrumental Analysis Center, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xiaoyue Liu
- Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yongguang Guan
- Department of Food Science and Technology, Shanghai Jiao Tong University, Shanghai 200240, China.
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19
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Yang F, Chen L, Zhao D, Guo T, Yu D, Zhang X, Li P, Chen J. A novel water-soluble chitosan grafted with nerol: Synthesis, characterization and biological activity. Int J Biol Macromol 2023; 232:123498. [PMID: 36731699 DOI: 10.1016/j.ijbiomac.2023.123498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/20/2023] [Accepted: 01/28/2023] [Indexed: 02/01/2023]
Abstract
In order to improve the antibacterial activity of chitosan and change its solubility, a novel water-soluble chitosan (CS)-nerol (N) derivative (CS-N) was prepared via Schiff base reaction and grafting reaction. FT-IR, NMR, XRD, TGA and SEM were used to characterize the structure and physicochemical properties, and in vitro antibacterial, antioxidant, and cellular assays were used to test for bioactivity and safety. The results revealed that the C6 hydroxyl group of CS was substituted with N, with a degree of substitution of 38 % for CS-N. Furthermore, compared to CS, CS-N demonstrated superior antibacterial activity against Escherichia coli and Staphylococcus aureus, as well as significant DPPH and ABTS free radical scavenging activity. Most importantly, CS-N did not harm HaCaT cells. In conclusion, this study provides a promising strategy for the design of chitosan derivatives with significant potential for application in pharmaceutical, food and cosmetic applications.
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Affiliation(s)
- Faming Yang
- Marine College, Shandong University, Weihai 264209, China
| | - Liqi Chen
- Marine College, Shandong University, Weihai 264209, China
| | - Di Zhao
- Marine College, Shandong University, Weihai 264209, China
| | - Tingting Guo
- Marine College, Shandong University, Weihai 264209, China
| | - Dingyi Yu
- Marine College, Shandong University, Weihai 264209, China
| | - Xinhua Zhang
- School of Photoelectric Engineering, Changzhou Institute of Technology, Changzhou 213032, China; Suzhou Amazing Grace Medical Equipment Co., Ltd, Suzhou 215011, China
| | - Peiyuan Li
- College of Pharmacy, Guangxi University of Chinese Medicine, Nanning 530000, China
| | - Jingdi Chen
- Marine College, Shandong University, Weihai 264209, China.
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20
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Liu X, Zhao L, Wu B, Chen F. Improving solubility of poorly water-soluble drugs by protein-based strategy: A review. Int J Pharm 2023; 634:122704. [PMID: 36758883 DOI: 10.1016/j.ijpharm.2023.122704] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/30/2023] [Accepted: 02/04/2023] [Indexed: 02/10/2023]
Abstract
Poorly water-soluble drugs are frequently encountered and present a most challengeable difficulty in pharmaceutical development. Poor solubility of drugs can lead to suboptimal bioavailability and therapeutic efficiency. Increasing efforts have been contributed to improve the solubility of poorly water-soluble drugs for better pharmacokinetics and pharmacodynamics. Among various solubility enhancement technologies, protein-based strategy to address poorly water-soluble drugs issues has special interests for natural advantages including versatile interactions between proteins and hydrophobic drugs, biocompatibility, biodegradation, and metabolization of proteins. The protein-drug formulations could be formed by covalent conjugations or noncovalent interactions to facilitate solubility of poorly water-soluble drugs. This review is to summarize the advances using proteins including plant proteins, mammalian proteins, and recombinant proteins, to enhance water solubility of poorly water-soluble drugs.
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Affiliation(s)
- Xiaowen Liu
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China; Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, 220 Handan Road, Shanghai 200433, China.
| | - Limin Zhao
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China; Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, 220 Handan Road, Shanghai 200433, China
| | - Baojian Wu
- Institute of Molecular Rhythm and Metabolism, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Fener Chen
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, 220 Handan Road, Shanghai 200433, China; Shanghai Engineering Research Center of Industrial Asymmetric Catalysis of Chiral Drugs, 220 Handan Road, Shanghai 200433, China.
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21
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Chen J, Luo L, Cen C, Liu Y, Li H, Wang Y. The nano antibacterial composite film carboxymethyl chitosan/gelatin/nano ZnO improves the mechanical strength of food packaging. Int J Biol Macromol 2022; 220:462-471. [PMID: 35952819 DOI: 10.1016/j.ijbiomac.2022.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 07/24/2022] [Accepted: 08/02/2022] [Indexed: 12/30/2022]
Abstract
The carboxymethyl chitosan (CMCS)/fish skin gelatin (Gel) based novel nanocomposite film was developed with nano ZnO for potential food packaging applications. The SEM and FT-IR results indicated that the nano ZnO was success composited with CMCS/Gel film. The X-ray diffraction result revealed that the total crystallinity of the CMCS/Gel/nano ZnO achieved 94.92 %, improving the crystallinity of the original substrate. Compared with CMCS/nano ZnO and Gel/nano ZnO, the water solubility of CMCS/Gel/nano ZnO decreased to 23 %. Moreover, its contact angle reached 91°, representing that the composite film showed better solvent resistance and can be widely used in food packaging, especially in foods with high water content. After nano-ZnO was compounded with CMCS/Gel film, the physical properties were further improved. Furthermore, CMCS/Gel/nano ZnO has higher elasticity and ductility than CMCS/nano ZnO and Gel/nano ZnO. For food packages, CMCS/Gel films incorporated with nano ZnO depicted strong against Escherichia coli (99.20 %) and Staphylococcus aureus (84.70 %) for food packages. The CMCS/Gel film with the addition of ZnO was optimal for producing nanocomposite films with higher water-insolubility, elasticity and ductility, and higher antibacterial properties.
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Affiliation(s)
- Jian Chen
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Lichun Luo
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Congnan Cen
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Yanan Liu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Huan Li
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, PR China
| | - Yanbo Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, PR China.
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22
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Zou W, Gu J, Li J, Wang Y, Chen S. Tailorable antibacterial and cytotoxic chitosan derivatives by introducing quaternary ammonium salt and sulfobetaine. Int J Biol Macromol 2022; 218:992-1001. [PMID: 35878673 DOI: 10.1016/j.ijbiomac.2022.07.122] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 07/04/2022] [Accepted: 07/16/2022] [Indexed: 11/30/2022]
Abstract
Chitosan (CS) derivatives with improved water solubility, antibacterial activity and adequate biocompatibility are attracting increasingly interest in medical application. Herein, we have successfully synthesized isocyanate terminated quaternary ammonium salt (IQAS) and sulfopropylbetaine (ISB) to be readily covalently bounded to CS skeleton by selective reaction with amino and hydroxyl groups. And their molecular structures and crystallinity were confirmed by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance, and X-ray diffraction. The effect of the substitution degree, carbon chain length, content ratio of IQAS/ISB on their water solubility, antibacterial activity and cytotoxicity were systematically investigated, which shows that those properties of the CS derivatives can be tailored by adjusting the grafted antibacterial agents and their additive amount. The structure-property relationship of these CS derivatives may provide a solid guidance on the development of CS derivatives for more efficient practical applications.
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Affiliation(s)
- Wanjing Zou
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Jingwei Gu
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China
| | - Jianna Li
- Department of Pathogen Biology, School of Basic Medical Sciences, Shenzhen University Health Sciences Center, Shenzhen 518060, China
| | - Yuanfang Wang
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
| | - Shiguo Chen
- Nanshan District Key Lab for Biopolymers and Safety Evaluation, Guangdong Research Center for Interfacial Engineering of Functional Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, PR China.
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23
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Lin X, Jia Y, Dong X, Shen J, Jin Y, Li Y, Wang F, Anenberg E, Zhou J, Zhu J, Chen X, Xie Q, Xie Y. Corrigendum: Diplatin, a Novel and Low-Toxicity Anti-Lung Cancer Platinum Complex, Activation of Cell Death in Tumors via a ROS/JNK/p53-Dependent Pathway, and a Low Rate of Acquired Treatment Resistance. Front Pharmacol 2022; 13:890886. [PMID: 35571124 PMCID: PMC9097790 DOI: 10.3389/fphar.2022.890886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 04/05/2022] [Indexed: 12/02/2022] Open
Affiliation(s)
- Xixi Lin
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yongliang Jia
- Zhejiang Respiratory Drugs Research Laboratory of Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, China.,Breath Smooth Biotech Hangzhou Co., LTD, Hangzhou, China
| | - Xinwei Dong
- Zhejiang Respiratory Drugs Research Laboratory of Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, China.,Breath Smooth Biotech Hangzhou Co., LTD, Hangzhou, China
| | - Jian Shen
- Zhejiang Respiratory Drugs Research Laboratory of Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, China.,Breath Smooth Biotech Hangzhou Co., LTD, Hangzhou, China
| | - Yachao Jin
- Breath Smooth Biotech Hangzhou Co., LTD, Hangzhou, China
| | - Yanyou Li
- Beijing Shuobai Pharmaceutical Co., LTD, Beijing, China
| | - Fang Wang
- Joinn Laboratories, BAD, Beijing, China
| | - Eitan Anenberg
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jiancang Zhou
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jianping Zhu
- Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Xiaoping Chen
- Beijing Shuobai Pharmaceutical Co., LTD, Beijing, China
| | - Qiangmin Xie
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China.,Zhejiang Respiratory Drugs Research Laboratory of Food and Drug Administration of China, Zhejiang University School of Medicine, Hangzhou, China
| | - Yicheng Xie
- Children's Hospital, Zhejiang University School of Medicine, Hangzhou, China
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24
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Xia X, Ren M, He WS, Jia C, Zhang X. The preparation of phytosteryl succinyl sucrose esters and improvement of their water solubility and emulsifying properties. Food Chem 2022; 373:131501. [PMID: 34763932 DOI: 10.1016/j.foodchem.2021.131501] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 09/20/2021] [Accepted: 10/27/2021] [Indexed: 02/07/2023]
Abstract
Phytosterols have gained much attention due to their outstanding cholesterol-reducing effect, while the insolubility in water limits their application. The aim of this study was to synthesize a novel hydrophilic phytosteryl derivatives-phytosteryl succinyl sucrose esters (PSSEs) and investigated their water solubility and emulsifying properties. PSSEs were synthesized by esterifying phytosterol hemisuccinates with sucrose through a mild chemical reaction. PSSEs were characterized by fourier transform infrared spectroscopy, mass spectroscopy, and nuclear magnetic resonance spectroscopy. The yield of PSSEs exceeded 84% in N,N-dimethylformamide for 36 h of reaction under the selected conditions: 100 mmol/L phytosteryl hemisuccinates, 150 mmol/L sucrose, 110 mmol/L 1-ethyl-3-(3-(dimethylamino)propyl)carbodiimide hydrochlide, 10 mmol/L 4-dimethylaminopyridine and 10 mmol/L p-toluenesulfonic acid. The water insolubility of phytosterols was overcome and the water solubility of PSSEs achieved 2.13 mg/mL. The emulsifying activity of PSSEs was 2.5 times that of phytosterols, reaching 0.95 mg/mL. PSSEs with better water solubility and emulsification properties could facilitate the widespread use of phytosterols in foods.
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Affiliation(s)
- Xue Xia
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Mingxing Ren
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Wen-Sen He
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China.
| | - Chengsheng Jia
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.
| | - Xiaoming Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; School of Food Science and Technology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, Jiangsu, China; International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
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25
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Bethapudy DR, Bhat C, Lakade L, Chaudhary S, Kunte S, Patil S. Comparative Evaluation of Water Sorption, Solubility, and Microhardness of Zirconia-reinforced Glass Ionomer, Resin-modified Glass Ionomer, and Type IX Glass Ionomer Restorative Materials: An In Vitro Study. Int J Clin Pediatr Dent 2022; 15:175-181. [PMID: 37457201 PMCID: PMC10338945 DOI: 10.5005/jp-journals-10005-2364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023] Open
Abstract
The challenge that practicing dentists face every day is to decide which dental material is best suited for each dental treatment. New glass-ionomer cement (GIC) formulations have been introduced in order to overcome the drawbacks of conventional ones thereby catering to the needs of the pediatric population. Aim and objective The study aimed to evaluate and compare water sorption, solubility, and microhardness of zirconia-reinforced glass ionomer, resin-modified glass ionomer, type IX glass ionomer cements. Materials and methods 90 specimens were prepared in total of which 45 cylindrical specimens with dimensions of (6 × 4) mm and 45 disks with (10 × 2) mm were prepared from Zirconomer, RMGIC, and Type IX GIC restorative materials, each material having 30 specimens (15 disks, 15 cylinders). After taking the initial weight (W1), the 45 cylinders (15 of each material) were immersed in artificial saliva at 37°C for 28 days after which the weights W2 and W3 were weighed. The other 45 disks (15 of each material) were subjected to microhardness test under microhardness tester. Results were subjected to ANOVA and Tuckey's post hoc test. Results Zirconomer showed the maximum resistance to water sorption and solubility followed by RMGIC and type IX GIC with a significant p value of < 0.001 difference. For microhardness, Zirconomer showed the highest value with a significant p value of < 0.001 difference. But, there was no significant difference between RMGIC and Type IX GIC depicting almost equal strength. Conclusion Water sorption, solubility, and microhardness of Zirconomer were significantly high in comparison to the other groups and it can be used as a posterior restorative material for stress-bearing areas. Clinical Significance As pediatric dentistry demands restorations to be completed frequently in less than ideal conditions, Zirconomer has shown to be better than RMGIC and conventional GIC probably because of the improvisation in the GIC properties. How to cite this article Bethapudy DR, Bhat C, Lakade L, et al. Comparative Evaluation of Water Sorption, Solubility, and Microhardness of Zirconia-reinforced Glass Ionomer, Resin-modified Glass Ionomer, and Type IX Glass Ionomer Restorative Materials: An In Vitro Study. Int J Clin Pediatr Dent 2022;15(2):175-181.
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Affiliation(s)
- Dinah Rachel Bethapudy
- Department of Pediatric and Preventive Dentistry, Bharati VidyapeethDental College and Hospital, Pune, Maharashtra, India
| | - Chetan Bhat
- Department of Pediatric and Preventive Dentistry, Bharati VidyapeethDental College and Hospital, Pune, Maharashtra, India
| | - Laxmi Lakade
- Department of Pediatric and Preventive Dentistry, Bharati VidyapeethDental College and Hospital, Pune, Maharashtra, India
| | - Shweta Chaudhary
- Department of Pediatric and Preventive Dentistry, Bharati VidyapeethDental College and Hospital, Pune, Maharashtra, India
| | - Sanket Kunte
- Department of Pediatric and Preventive Dentistry, Bharati VidyapeethDental College and Hospital, Pune, Maharashtra, India
| | - Smita Patil
- Department of Pediatric and Preventive Dentistry, Bharati VidyapeethDental College and Hospital, Pune, Maharashtra, India
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26
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Zhang J, Li M, Kong Z, Bai T, Quan R, Gao T, Duan L, Liu Y, Fan B, Wang F. Model prediction of herbicide residues in soybean oil: Relationship between physicochemical properties and processing factors. Food Chem 2022; 370:131363. [PMID: 34656023 DOI: 10.1016/j.foodchem.2021.131363] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/05/2021] [Accepted: 10/05/2021] [Indexed: 12/29/2022]
Abstract
The distribution and processing factors (PFs) of herbicides in cold-/hot-pressed soybean samples (n = 3) were studied on the laboratory scale. The hot-pressing process was found to have a significant effect on herbicide degradation in soybean samples. Specifically, for highly water-soluble pesticides with pKow > 2 in soybean oil, the PF values were generally > 1. Nonlinear curve fitting revealed that the PFs of herbicides in soybean oil were positively correlated with their octanol-water partition coefficients, but negatively correlated with their water solubility and melting points. A principal component analysis confirmed the dominant parameters among the herbicide PFs during soybean oil production. Using the physicochemical parameters of pesticides, the developed multiple linear regression model gave a fitting accuracy of ≥0.80 for predicting the theoretical PF values of pesticides in soybean oil products (0.39 < RMSE < 0.58). Thus, this model may be applicable for safety risk assessments and establishing maximum residue limits for pesticides in processed products.
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Affiliation(s)
- Jia Zhang
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Minmin Li
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Zhiqiang Kong
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
| | - Tiecheng Bai
- Southern Xinjiang Research Center for Information Technology in Agriculture, Tarim University, Alaer 843300, PR China
| | - Rui Quan
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Tengfei Gao
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China
| | - Lifang Duan
- Institute for the Control of Agrochemicals, Ministry of Agriculture and Rural Affairs, Beijing 100125, PR China
| | - Yongguo Liu
- Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University (BTBU), Beijing 100048, China
| | - Bei Fan
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
| | - Fengzhong Wang
- Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs/Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, PR China.
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27
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Liu TZ, Cui XL, Sun WL, Miao JY, Zhao BX, Lin ZM. Two simple but effective turn-on benzothiazole-based fluorescent probes for detecting hydrogen sulfide in real water samples and HeLa cells. Anal Chim Acta 2022; 1189:339225. [PMID: 34815049 DOI: 10.1016/j.aca.2021.339225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 10/13/2021] [Accepted: 10/28/2021] [Indexed: 11/01/2022]
Abstract
Two simple turn-on fluorescent probes, containing a benzothiazole and the 2,4-dinitrobenzenesulfonyl group, were designed for detecting H2S. Two probes exhibited good selectivity and high sensitivity, which were applied to detect the H2S in real water samples. Probe P2 with a positive charge had better solubility than probe P1 in water; therefore, probe P2 was successfully applied to detect both the endogenous and exogenous H2S in lysosomes of living HeLa cells.
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Affiliation(s)
- Tian-Zhen Liu
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China
| | - Xiao-Ling Cui
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, PR China
| | - Wen-Long Sun
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China
| | - Jun-Ying Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Qingdao, 266237, PR China
| | - Bao-Xiang Zhao
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, PR China.
| | - Zhao-Min Lin
- Institute of Medical Science, The Second Hospital of Shandong University, Jinan, 250033, PR China.
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Ou Z, Liu S, Liu Y, Chen H, Li H. A highly sensitive chemosensor for rapid recognition of Cu 2+ and HSO 3- in 100% aqueous solution. Spectrochim Acta A Mol Biomol Spectrosc 2021; 263:120215. [PMID: 34325174 DOI: 10.1016/j.saa.2021.120215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 06/19/2021] [Accepted: 07/17/2021] [Indexed: 06/13/2023]
Abstract
Dual-responsive chemosensors have garnered much research interests owing to the ability of recognizing two analytes simultaneously. Herein, the chemosensor BPIS composed of hemicyanine and 2, 2'-dipyridylamine (DPA) was facilely synthesized for sensitive and expeditious recognition of Cu2+ and HSO3- in 100% aqueous solution. By adding Cu2+, BPIS showed substantial spectral changes accompanied by a noticeable color change from pink to yellow under daylight. The absorbance and fluorescence intensity were linearly correlated to the Cu2+ concentration, enabling the quantitative recognition of Cu2+. The limit of detection (LOD) for Cu2+ was down to 4.02 × 10-9 M. The response time of BPIS towards Cu2+ was 10 s, imparting BPIS great potential in real-time detection of Cu2+. Meanwhile, BPIS manifested ratiometric fluorescence response by introducing HSO3- owing to the 1,4-addition between HSO3- and the unsaturated CC bond of BPIS. The color of the BPIS solution progressively faded from pink to colorless with increasing HSO3- concentration, and a LOD of 3.47 × 10-9 M was obtained. In addition, BPIS-coated test paper was found to be an efficient tool for fast, sensitive, portable detection of Cu2+ and HSO3- by naked eyes. More importantly, the precise detection of Cu2+ and HSO3- in real water and sugars were realized, respectively, by capitalizing on BPIS as the signal tool.
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Affiliation(s)
- Zhipeng Ou
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Shuzhi Liu
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Yijiang Liu
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China.
| | - Hongbiao Chen
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China
| | - Huaming Li
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan 411105, Hunan Province, China.
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29
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Su C, He Z, Wang Z, Zhang D, Li H. Aggregation and deaggregation: The effect of high-pressure homogenization cycles on myofibrillar proteins aqueous solution. Int J Biol Macromol 2021; 189:567-76. [PMID: 34428492 DOI: 10.1016/j.ijbiomac.2021.08.133] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/20/2021] [Accepted: 08/17/2021] [Indexed: 11/21/2022]
Abstract
Myofibrillar proteins (MPs) have not been fully used for a long time due to its poor solubility in low ionic strength solutions. The study explored the effect of high pressure homogenization (HPH) cycles under two pressures on the solubility of MPs. The MPs solubility increased with HPH cycles (p < 0.05), the results of turbidity, appearance, droplet size indicated that the increase of solubility was due to MPs depolymerization, excessive HPH cycles (25k psi for 11 cycles) would lead to protein re-aggregation but does not affect solubility (p>0.05). SDS-PAGE suggested that myosin formed soluble polymers with different molecular weights through disulfide bonds during HPH cycles, the polymer consisted of myosin subunits of different molecular weights. Endogenous fluorescence spectra, intermolecular chemical forces, isoelectric point analysis and free amino acids (FAAs) indicated that the dissolution of polymers in low ionic strength media was dominated by polar environment and intermolecular steric hindrance, but not to FAAs.
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30
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Letinski DJ, Redman AD, Birch H, Mayer P. Inter-laboratory comparison of water solubility methods applied to difficult-to-test substances. BMC Chem 2021; 15:52. [PMID: 34526066 PMCID: PMC8442276 DOI: 10.1186/s13065-021-00778-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 09/02/2021] [Indexed: 11/30/2022] Open
Abstract
Water solubility is perhaps the single most important physical–chemical property determining the environmental fate and effects of organic compounds. Its determination is particularly challenging for compounds with extremely low solubility, frequently referred to as “difficult-to-test” substances and having solubility’s generally less than 0.1 mg/L. The existing regulatory water solubility test for these compounds is the column elution method. Its applicability, however, is limited, to non-volatile solid or crystalline hydrophobic organic compounds. There currently exists no test guideline for measuring the water solubility of very hydrophobic liquid, and potentially volatile, difficult-to-test compounds. This paper describes a “slow-stir” water solubility methodology along with results of a ring trial across five laboratories evaluating the method’s performance. The slow-stir method was applied to n-hexylcyclohexane, a volatile, liquid hydrophobic hydrocarbon. In order to benchmark the inter-laboratory variability associated with the proposed slow-stir method, the five laboratories separately determined the solubility of dodecahydrotriphenylene, a hydrophobic solid compound using the existing column elution guideline. Results across the participating laboratories indicated comparable reproducibility with relative standard deviations (RSD) of 20% or less reported for each test compound – solubility method pair. The inter-laboratory RSD was 16% for n-hexylcyclohexane (mean 14 µg/L, n = 5) using the slow-stir method. For dodecahydrotriphenylene, the inter-laboratory RSD was 20% (mean 2.6 µg/L, n = 4) using the existing column elution method. This study outlines approaches that should be followed and the experimental parameters that have been deemed important for an expanded ring trial of the slow-stir water solubility method. ![]()
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Affiliation(s)
- Daniel J Letinski
- Toxicology and Environmental Sciences Division, ExxonMobil Biomedical Sciences, Inc., 1545 US Highway 22 East, Annandale, NJ, 08801-3059, USA.
| | - Aaron D Redman
- Toxicology and Environmental Sciences Division, ExxonMobil Biomedical Sciences, Inc., 1545 US Highway 22 East, Annandale, NJ, 08801-3059, USA
| | - Heidi Birch
- Department of Environmental Engineering, Technical University of Denmark, 2800 Kgs, Lyngby, Denmark
| | - Philipp Mayer
- Department of Environmental Engineering, Technical University of Denmark, 2800 Kgs, Lyngby, Denmark
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Lv YK, Mei L, Zhang LX, Yang DH, Yin ZY. Multifunctional graphene-based nanocomposites for simultaneous enhanced photocatalytic degradation and photothermal antibacterial activity by visible light. Environ Sci Pollut Res Int 2021; 28:49880-49888. [PMID: 33948833 DOI: 10.1007/s11356-021-14199-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/27/2021] [Indexed: 06/12/2023]
Abstract
A new strategy for the wastewater treatment was proposed by combining polyvinylpyrrolidone-functionalized silver nanoparticles with reduced graphene oxide (AgNPs-PVP@rGO) as a visible light-triggered photoactive nanocomposite. The nanocomposite with enhanced photocatalytic degradation and photothermal antibacterial activity can simultaneously decrease the content of organic pollutants and bacteria in the wastewater under visible light irradiation. The efficiency of photocatalytic degradation can be significantly improved by the conjugation of AgNPs onto the rGO surface. The water solubility and dispersion of nanocomposite can be increased via PVP functionalization, without stirring during the photocatalytic process. Under the optimal synthesis condition, AgNPs-PVP@rGO has a photocatalytic degradation efficiency of 90.1% for rhodamine B, which is 6.9 and 1.8 times higher than that of polyvinylpyrrolidone-functionalized silver nanoparticles and rGO alone, respectively. More importantly, the degradation efficiency of optimal AgNPs-PVP@rGO sol on rhodamine B is significantly higher than that of its block suspension in the same amount, indicating that the sol with more specific surface area is conducive to the photocatalytic reaction. Meanwhile, the AgNPs-PVP@rGO with excellent photothermal activity can effectively inhibit the bacterial growth. This functional modification of graphene provides a new strategy for simultaneous treatment of multiple pollutants in wastewater. The AgNPs-PVP@rGO nanocomposites for simultaneous enhanced photocatalytic degradation and photothermal antibacterial activity by visible light.
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Affiliation(s)
- Ya-Kun Lv
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China
- Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Lin Mei
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China.
| | - Liu-Xue Zhang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China
| | - De-Hong Yang
- School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China
| | - Zi-Yu Yin
- College of International Education, Zhongyuan University of Technology, Zhengzhou, 450007, People's Republic of China
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Chen S, Bi K, Wu S, Li Y, Huang Y, Sheng C, Dong G. Water-soluble derivatives of evodiamine: Discovery of evodiamine-10-phosphate as an orally active antitumor lead compound. Eur J Med Chem 2021; 220:113544. [PMID: 34052678 DOI: 10.1016/j.ejmech.2021.113544] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/26/2021] [Accepted: 05/09/2021] [Indexed: 10/21/2022]
Abstract
10-Hydroxyevodiamine is a multitargeting antitumor lead compound with excellent in vitro activity. However, its in vivo antitumor potency is rather limited, which has hampered its further clinical development. To overcome this obstacle, a series of novel water-soluble derivatives of 10-hydroxyevodiamine were designed and synthesized. Most of them exhibited good to excellent antitumor activities against several cancer cell lines. In particular, phosphate derivative 9 was orally active and showed improved in vivo antitumor efficacy in HCT116 xenograft models. Further antitumor mechanism studies indicated that compound 9 acted by triple Top1/Top2/tubulin inhibition and induced apoptosis with G2/M cell cycle arrest. Taken together, this study extended the structure-activity relationship of evodiamine and identified phosphate derivative 9 as a promising antitumor lead compound.
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Affiliation(s)
- Shuqiang Chen
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Kaijian Bi
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Shanchao Wu
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Yu Li
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Yahui Huang
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China
| | - Chunquan Sheng
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China.
| | - Guoqiang Dong
- Department of Medicinal Chemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai, 200433, People's Republic of China.
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Yang J, Chen W, Chen X, Zhang X, Zhou H, Du H, Wang M, Ma Y, Jin X. Detection of Cu 2+ and S 2- with fluorescent polymer nanoparticles and bioimaging in HeLa cells. Anal Bioanal Chem 2021; 413:3945-3953. [PMID: 33954830 DOI: 10.1007/s00216-021-03345-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/03/2021] [Accepted: 04/13/2021] [Indexed: 11/26/2022]
Abstract
Novel spherical polymer nanoparticles were synthesized by hyperbranched polyethylenimine (hPEI) and 6-hydroxy-2-naphthaldehyde (HNA) via Schiff base reaction (one-pot reaction), which had great advantages in water solubility and green synthesis. Meanwhile, probe PEI-HNA could quickly detect Cu2+ in the range of 0-60 μM in 30 s with the detection limit of 243 nM. The fluorescence of PEI-HNA-Cu2+ could be recovered by the addition of S2- in 50 s with the detection limit of 227 nM. Based on the excellent optical properties, PEI-HNA has been used in the bioimaging of living cells with excellent cell penetrability and low toxicity. More importantly, PEI-HNA has been doped into filter paper, hydrogel, and nanofibrous film to prepare solid-phase sensors, displaying rapid response and excellent sensitivity. Moreover, the low-cost and simple preparation of these sensors offers great potential and possibilities for industrialization, which could help accelerate the development of sensors in environmental and biological fields.
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Affiliation(s)
- Jin Yang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Weixing Chen
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China.
| | - Xinyu Chen
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Xi Zhang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Hongwei Zhou
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Haotian Du
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Mingcheng Wang
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Yiting Ma
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China
| | - Xilang Jin
- School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, 710032, Shaanxi, China.
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34
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Liu TT, Su GZ, Yang TS. Functionalities of chitosan conjugated with lauric acid and l-carnitine and application of the modified chitosan in an oil-in-water emulsion. Food Chem 2021; 359:129851. [PMID: 33957325 DOI: 10.1016/j.foodchem.2021.129851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 04/05/2021] [Accepted: 04/12/2021] [Indexed: 11/29/2022]
Abstract
The aim of this research was to conjugate chitosan (CT) with lauric acid (LA) and l-carnitine (CNT) to yield a product that is water-soluble at neutral pH and has surface, antimicrobial, and antioxidant activities. The resulting CT-LA-CNT is water-soluble at neutral pH, in contrast with CT and CT-LA, which require the aid of acid to become soluble. Concerning antimicrobial activity, for S. aureus, the minimum bactericidal concentration of CT was lower than those of CT-LA or CT-LA-CNT, while the three compounds exhibited similar bactericidal activity against E. coli. CT-LA-CNT was also used to study the oxidative stability of soybean oil in an oil-in-water (O/W) emulsion; sodium dodecyl sulfate (SDS) and Tween 80 and Span 80 (TS), an emulsifier mixture, were used as controls for comparison. The results showed that CT-LA-CNT was better than SDS and TS at protecting the lipid from oxidation.
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Affiliation(s)
- Tai-Ti Liu
- Department of Food Science, Yuanpei University of Medical Technology, No. 306 Yuanpei Street, Hsinchu 30015, Taiwan
| | - Guan-Zhen Su
- Department of Cosmeceutics, China Medical University, No. 100, Sec. 1, Jingmao Rd., Beitun Dist., Taichung 406040, Taiwan
| | - Tsung-Shi Yang
- Department of Cosmeceutics, China Medical University, No. 100, Sec. 1, Jingmao Rd., Beitun Dist., Taichung 406040, Taiwan.
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35
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Wang R, Wang T, Feng W, Wang Q, Wang T. Rice proteins and cod proteins forming shared microstructures with enhanced functional and nutritional properties. Food Chem 2021; 354:129520. [PMID: 33740645 DOI: 10.1016/j.foodchem.2021.129520] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 02/26/2021] [Accepted: 03/01/2021] [Indexed: 11/29/2022]
Abstract
Low water solubility strictly limits the potential applications of plant or animal proteins such as rice proteins (RPs) and cod proteins (CPs). In this study, nanoscale hydrophilic colloidal co-assemblies (80 ~ 150 nm) with excellent water solubility were prepared by hydrating RPs and CPs at pH 12 combined with neutralization. The solubility of RPs was boosted to over 90% (w/v), while most of the subunits in CPs became fully soluble. Structural analysis revealed that RPs and CPs non-covalently reacted, which triggered sheet-helix transitions and formed a compact core of RPs coated by a layer of CPs. Both proteins exposed significant hydrophilic motifs and buried hydrophobic moieties, contributing to the high water-dispersibility of their co-assemblies. Moreover, the co-assembled proteins acquired leveraged amino acid compositions between RPs and CPs. This study will enrich the processing technology of protein components, customizing their structural and nutritional characteristics.
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Affiliation(s)
- Ren Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Tingting Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Wei Feng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Qichu Wang
- Anhui Habo Pharmaceutical Co., Ltd., Fuyang 236600, China
| | - Tao Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China; National Engineering Laboratory for Cereal Fermentation Technology, Jiangnan University, Wuxi 214122, China; Jiangsu Provincial Research Centre for Bioactive Product Processing Technology, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China; Anhui Habo Pharmaceutical Co., Ltd., Fuyang 236600, China.
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36
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Wang B, Liu F, Xiang J, He Y, Zhang Z, Cheng Z, Liu W, Tan S. A critical review of spray-dried amorphous pharmaceuticals: Synthesis, analysis and application. Int J Pharm 2020; 594:120165. [PMID: 33309835 DOI: 10.1016/j.ijpharm.2020.120165] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 12/06/2020] [Indexed: 12/12/2022]
Abstract
New drugs are frequently found with poor water-solubility in recent pharmaceutical projects, which brings difficulties of bioavailability for the clinical development of new drugs. When these drug compounds in a crystalline state are absorbed by gastrointestinal tract, their dissolution rates and absorption rates are very limited. Nowadays, various methods have been developed to improve the solubility, dissolution and bioavailability of drugs. According to the characteristics of drugs, this work suggests the use of spray drying technology to amorphize APIs (active pharmaceutical ingredients) to improve their bioavailability. This work reviews the properties of the spray-dried amorphous drugs, the progress made in drug synthesis and application, and the existing problems.
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Affiliation(s)
- Bo Wang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Fenglin Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Jia Xiang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Yongju He
- School of Materials Science and Engineering, Central South University, Changsha, Hunan 410013, China
| | - Zhibin Zhang
- Research and Development Department, Jiangsu Dawning Pharmaceutical Co., Ltd., Changzhou, Jiangsu 213162, China
| | - Zeneng Cheng
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Wenjie Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China.
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37
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Alsayed SSR, Lun S, Payne A, Bishai WR, Gunosewoyo H. Design, synthesis and antimycobacterial evaluation of novel adamantane and adamantanol analogues effective against drug-resistant tuberculosis. Bioorg Chem 2020; 106:104486. [PMID: 33276981 DOI: 10.1016/j.bioorg.2020.104486] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 11/11/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022]
Abstract
The treacherous nature of tuberculosis (TB) combined with the ubiquitous presence of the drug-resistant (DR) forms pose this disease as a growing public health menace. Therefore, it is imperative to develop new chemotherapeutic agents with a novel mechanism of action to circumvent the cross-resistance problems. The unique architecture of the Mycobacterium tuberculosis (M. tb) outer envelope plays a predominant role in its pathogenesis, contributing to its intrinsic resistance against available therapeutic agents. The mycobacterial membrane protein large 3 (MmpL3), which is a key player in forging the M. tb rigid cell wall, represents an emerging target for TB drug development. Several indole-2-carboxamides were previously identified in our group as potent anti-TB agents that act as inhibitor of MmpL3 transporter protein. Despite their highly potent in vitro activities, the lingering Achilles heel of these indoleamides can be ascribed to their high lipophilicity as well as low water solubility. In this study, we report our attempt to improve the aqueous solubility of these indole-2-carboxamides while maintaining an adequate lipophilicity to allow effective M. tb cell wall penetration. A more polar adamantanol moiety was incorporated into the framework of several indole-2-carboxamides, whereupon the corresponding analogues were tested for their anti-TB activity against drug-sensitive (DS) M. tb H37Rv strain. Three adamantanol derivatives 8i, 8j and 8l showed nearly 2- and 4-fold higher activity (MIC = 1.32 - 2.89 µM) than ethambutol (MIC = 4.89 µM). Remarkably, the most potent adamantanol analogue 8j demonstrated high selectivity towards DS and DR M. tb strains over mammalian cells [IC50 (Vero cells) ≥ 169 µM], evincing its lack of cytotoxicity. The top eight active compounds 8b, 8d, 8f, 8i, 8j, 8k, 8l and 10a retained their in vitro potency against DR M. tb strains and were docked into the MmpL3 active site. The most potent adamantanol/adamantane-based indoleamides 8j/8k displayed a two-fold surge in potency against extensively DR (XDR) M. tb strains with MIC values of 0.66 and 0.012 µM, respectively. The adamantanol-containing indole-2-carboxamides exhibited improved water solubility both in silico and experimentally, relative to the adamantane counterparts. Overall, the observed antimycobacterial and physicochemical profiles support the notion that adamantanol moiety is a suitable replacement to the adamantane scaffold within the series of indole-2-carboxamide-based MmpL3 inhibitors.
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Affiliation(s)
- Shahinda S R Alsayed
- School of Pharmacy and Biomedical Sciences, Faculty of Health Sciences, Curtin University, Bentley, Perth, WA 6102, Australia
| | - Shichun Lun
- Center for Tuberculosis Research, Department of Medicine, Division of Infectious Disease, Johns Hopkins School of Medicine, 1550, Orleans Street, Baltimore, MD 21231-1044, United States
| | - Alan Payne
- School of Molecular and Life Sciences, Curtin University, Perth, WA 6102, Australia
| | - William R Bishai
- Center for Tuberculosis Research, Department of Medicine, Division of Infectious Disease, Johns Hopkins School of Medicine, 1550, Orleans Street, Baltimore, MD 21231-1044, United States; Howard Hughes Medical Institute, 4000 Jones Bridge Road, Chevy Chase, Maryland 20815-6789, United States.
| | - Hendra Gunosewoyo
- School of Pharmacy and Biomedical Sciences, Faculty of Health Sciences, Curtin University, Bentley, Perth, WA 6102, Australia.
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Antoni F, Wifling D, Bernhardt G. Water-soluble inhibitors of ABCG2 (BCRP) - A fragment-based and computational approach. Eur J Med Chem 2021; 210:112958. [PMID: 33199153 DOI: 10.1016/j.ejmech.2020.112958] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/16/2020] [Accepted: 10/18/2020] [Indexed: 12/13/2022]
Abstract
A good balance between hydrophilicity and lipophilicity is a prerequisite for all bioactive compounds. If the hydrophilicity of a compound is low, its solubility in water will be meager. Many drug development failures have been attributed to poor aqueous solubility. ABCG2 inhibitors are especially prone to be insoluble since they have to address the extremely large and hydrophobic multidrug binding site in ABCG2. For instance, our previous, tariquidar-related ABCG2 inhibitor UR-MB108 (1) showed high potency (79 nM), but very low aqueous solubility (78 nM). To discover novel potent ABCG2 inhibitors with improved solubility we pursued a fragment-based approach. Substructures of 1 were optimized and the fragments 'enlarged' to obtain inhibitors, supported by molecular docking studies. Synthesis was achieved, i.a., via Sonogashira coupling, click chemistry and amide coupling. A kinetic solubility assay revealed that 1 and most novel inhibitors did not precipitate during the short time period of the applied biological assays. The solubility of the compounds in aqueous media at equilibrium was investigated in a thermodynamic solubility assay, where UR-Ant116 (40), UR-Ant121 (41), UR-Ant131 (48) and UR-Ant132 (49) excelled with solubilities between 1 μM and 1.5 μM - an up to 19-fold improvement compared to 1. Moreover, these novel N-phenyl-chromone-2-carboxamides inhibited ABCG2 in a Hoechst 33342 transport assay with potencies in the low three-digit nanomolar range, reversed MDR in cancer cells, were non-toxic and proved stable in blood plasma. All properties make them attractive candidates for in vitro assays requiring long-term incubation and in vivo studies, both needing sufficient solubility at equilibrium. 41 and 49 were highly ABCG2-selective, a precondition for developing PET tracers. The triple ABCB1/C1/G2 inhibitor 40 qualifies for potential therapeutic applications, given the concerted role of the three transporter subtypes at many tissue barriers, e.g. the BBB.
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39
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Mun S, Surh J, Shin M. Methods to improve rice protein dispersal at moderate pH. Food Sci Biotechnol 2020; 29:1401-6. [PMID: 32999747 DOI: 10.1007/s10068-020-00799-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 05/04/2020] [Accepted: 07/13/2020] [Indexed: 01/04/2023] Open
Abstract
Dispersion of rice protein (RP) at a neutral pH is highly important for its application in the food industry. We analyzed the solubility of RP at different pH conditions and found higher solubility at pH < 3 and pH > 8 than at a neutral pH. Furthermore, at pH 2, the RP solubility improved from 30 to 63% with sonication; however, the samples precipitated when the pH was increased from 2 to 7. To circumvent this, anionic pectin and sodium alginate were added to the RP solution at pH 2. Pectin formed a complex with RP at pH 2, showing a shift in the zeta-potential from 17.3 mV (RP only) to - 1.0 mV (RP plus 1% pectin). Interestingly, the formation of this RP-pectin complex allowed RP to remain dispersed when the pH was increased to 7. Moreover, a stable emulsion could be prepared using the RP-pectin complex as an emulsifier.
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40
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Liu H, Zhang H, Liu Q, Chen Q, Kong B. Solubilization and stable dispersion of myofibrillar proteins in water through the destruction and inhibition of the assembly of filaments using high-intensity ultrasound. Ultrason Sonochem 2020; 67:105160. [PMID: 32388315 DOI: 10.1016/j.ultsonch.2020.105160] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/19/2020] [Accepted: 04/30/2020] [Indexed: 05/08/2023]
Abstract
The insolubility and poor dispersion of myofibrillar proteins (MPs) in water have always been the primary factors limiting the development of novel meat-based products. This study aimed to explore the mechanisms by which high-intensity ultrasound (HIU) at various power settings (0, 150, 300, 450 and 600 W) improved the solubility and dispersion stability of MPs in water. According to the solubility analysis, HIU significantly increased the water solubility of MPs (p < 0.05). The MPs treated with 450 W exhibited the best dispersion stability in water, which corresponded to the highest zeta-potential, smallest particle size and most uniform distribution (p < 0.05). Based on the circular dichroism and fluorescence spectroscopy and surface hydrophobicity analysis, the loss of the MP superhelix and subsequent random dissociation of the filamentous myosin structure appeared to be the main mechanism of MP solubilization. In addition, according to the zeta-potential, SDS-PAGE and Nano LC-ESI-MS/MS analyses, the increase in surface charge and the formation of soluble oligomers may provide additional forces to inhibit filament assembly, thereby improving the stability of the aqueous MP suspension. Atomic force microscopy (AFM) observations further confirmed these results. In conclusion, an HIU treatment effectively improves the solubility and dispersion stability of MP in water.
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Affiliation(s)
- Haotian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Huan Zhang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qian Chen
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Baohua Kong
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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41
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Wu X, Kuang N, Chen L, Fan Y, Fu F, Li J, Zhang J. Synthesis and property of alkyl dioxyethyl α- D-xyloside. J Mol Liq 2020; 315:113770. [PMID: 32834260 PMCID: PMC7342039 DOI: 10.1016/j.molliq.2020.113770] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 11/21/2022]
Abstract
Due to the inherent defects of the long alkyl chain in the related hydrophilicity and water solubility, alkyl α-D-xylosides (7) had hardly the practical application as sugar-based surfactants and should be reconstructed to obtain alkyl dioxyethyl α-D-xylosides (5) with dioxyethylene fragment (-(OCH2CH2)2-)) as the hydrophilic spacer to increase the related TPSA value. With D-xylose as the raw material, 1,2-cis alkyl dioxyethyl α-D-xylosides (5a-5f, n = 6-12) were stereoselectively synthesized. Their physicochemical properties including water solubility, surface tension, foamability, emulsification, thermotropic liquid crystal, and hygroscopicity had been investigated. Their water solubility was found to decrease gradually whereas their calculated HLB numbers were 14.72 → 11.67 (n = 6 → 12) with increasing alkyl chain length (n). Dodecyl dioxyethyl α-D-xyloside (5f) had not water solubility because the HLB number was low. Furthermore, their CMC values decreased with increasing the alkyl chain length, and the CMC value of decyl dioxyethyl α-D-xyloside (5e) was as low as 9.21 × 10-5 mol·L-1. Octyl dioxyethyl α-D-xyloside (5c) had the lowest surface tension (27.25 mN·m-1) at the CMC. Both of nonyl and decyl dioxyethyl α-D-xylosides (5d & 5e) possessed good foaming power and foam stability. Decyl dioxyethyl α-D-xyloside (5e) had the strongest emulsifying property either in the toluene/water system or in the octane/water system. Nonyl dioxyethyl α-D-xylosides (5d) had the most stylish SA texture. Hexyl dioxyethyl α-D-xyloside (5a) possessed the strongest hygroscopicity. Therefore, the alkyl dioxyethyl α-D-xylosides as a class of novel sugar-based surfactants will be widely considered as promising candidates for various practical applications.
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Affiliation(s)
- Xiubing Wu
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
| | - Na Kuang
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
| | - Langqiu Chen
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
| | - Yulin Fan
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
| | - Fang Fu
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
| | - Jiping Li
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
| | - Jing Zhang
- College of Chemistry, Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Xiangtan University, Xiangtan City, 411105, Hunan, People's Republic of China
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Jiang H, Xing Z, Wang Y, Zhang Z, Kumah Mintah B, Dabbour M, Li Y, He R, Huang L, Ma H. Preparation of allicin-whey protein isolate conjugates: Allicin extraction by water, conjugates' ultrasound-assisted binding and its stability, solubility and emulsibility analysis. Ultrason Sonochem 2020; 63:104981. [PMID: 32000052 DOI: 10.1016/j.ultsonch.2020.104981] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/06/2020] [Accepted: 01/18/2020] [Indexed: 05/26/2023]
Abstract
The instability of allicin makes it easily decomposed into various organic sulfur compounds, resulting in significant decrease in biological activity. In this study, allicin was firstly extracted with water, then bound with whey protein isolates (WPI) which were pretreated by ultrasound to form conjugates, and the stability, water solubility and emulsibility of conjugates were as well investigated. The research results showed that there were no significant differences in the extraction yields of allicin from water, 40% and 80% ethanol. Appropriate frequency (20/40 kHz), power (50 W/L) and time (20 min) of ultrasonic pretreatments significantly increased (P < 0.05) the sulfhydryl groups content of WPI by 35.05% over control, causing improvement in binding ability of protein to allicin. The binding process of allicin-WPI displayed good fit with Elovich kinetic model (R2 = 0.9781). The mass retention rate of the conjugates (in 60% combination rate) with ultrasonic pretreating kept at 95.97% after 14 days of storage at 25 °C, whereas allicin's mass retention rate was only 61.79% at same storage condition. The water solubility of the prepared conjugates was significantly higher than allicin. And with optimal condition ultrasonic pretreatment of WPI, the conjugates showed the highest emulsifying capacity and emulsion stability (49.56 m2/g, 10.06 min). In conclusion, the ultrasonically pretreated allicin-WPI conjugates exhibited better stability, water solubility and emulsifying properties compared to allicin, this expands the application field of allicin.
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Affiliation(s)
- Hui Jiang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing , Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Zheng Xing
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing , Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Yang Wang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Applied Chemistry and Biological Engineering, Weifang Engineering Vocational College, 8979 Yunmenshan South Road, Qingzhou, Shandong 262500, China
| | - Zhaoli Zhang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Applied Chemistry and Biological Engineering, Weifang Engineering Vocational College, 8979 Yunmenshan South Road, Qingzhou, Shandong 262500, China
| | - Benjamin Kumah Mintah
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Mokhtar Dabbour
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Department of Agricultural and Biosystems Engineering, Faculty of Agriculture, Benha University, P.O. Box 13736, Moshtohor, Qaluobia, Egypt
| | - Yihe Li
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; College of Grain Engineering, Food&Drug, Jiangsu Vocational College of Finance &Economics, 8 Meicheng East Road, Huaian, Jiangsu 223001, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing , Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.
| | - Liurong Huang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing , Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China.
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China; Institute of Food Physical Processing , Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
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Toropova AP, Toropov AA, Carnesecchi E, Benfenati E, Dorne JL. The using of the Index of Ideality of Correlation (IIC) to improve predictive potential of models of water solubility for pesticides. Environ Sci Pollut Res Int 2020; 27:13339-13347. [PMID: 32020455 DOI: 10.1007/s11356-020-07820-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 01/21/2020] [Indexed: 06/10/2023]
Abstract
Models for water solubility of pesticides suggested in this manuscript are important data from point of view of ecologic engineering. The Index of Ideality of Correlation (IIC) of groups of quantitative structure-property relationships (QSPRs) for water solubility of pesticides related to the calibration sets was used to identify good in silico models. This comparison confirmed the high IIC set provides better statistical quality of the model for the validation set. Though there are large databases on solubility, the reliable prediction of the endpoint for new substances which are potential pesticides is an important ecologic task. Unfortunately, predictive models for various endpoints suffer overtraining, and the IIC serves to avoid or at least reduce this. Thus, the approach suggested has both theoretical and economic effects for ecology.
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Affiliation(s)
- Alla P Toropova
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Science, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156, Milan, Italy.
| | - Andrey A Toropov
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Science, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156, Milan, Italy
| | - Edoardo Carnesecchi
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Science, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156, Milan, Italy
- Institute for Risk Assessment Sciences, Utrecht University, PO Box 80177, 3508 TD, Utrecht, The Netherlands
| | - Emilio Benfenati
- Laboratory of Environmental Chemistry and Toxicology, Department of Environmental Health Science, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156, Milan, Italy
| | - Jean Lou Dorne
- Scientific Committee and Emerging Risks Unit, European Food Safety Authority, Via Carlo Magno 1A, 43126, Parma, Italy
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Wang Y, Cen C, Chen J, Fu L. MgO/carboxymethyl chitosan nanocomposite improves thermal stability, waterproof and antibacterial performance for food packaging. Carbohydr Polym 2020; 236:116078. [PMID: 32172891 DOI: 10.1016/j.carbpol.2020.116078] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/14/2020] [Accepted: 02/26/2020] [Indexed: 02/02/2023]
Abstract
A novel nanocomposite film was fabricated by carboxymethyl chitosan (CMCS) and nano MgO for potential food packaging applications. The impregnation of MgO nanoparticles into CMCS was evidenced by the X-ray diffraction and FTIR spectroscopy. SEM micrographs revealed a dense layer of MgO formation in the CMCS matrix, which is a major contributor to the improvement of crystallinity. Compared with pure CMCS, CMCS/MgO composites confer improved thermal stability, better UV shielding performance, as well as water-insolubility, improving the feasibility of using CMCS-based biopolymer films as food packagings, especially in the case of water-rich food. These physical properties were further enhanced with the increase in MgO content. Furthermore, MgO nanoparticles can simultaneously provide CMCS with increased elasticity and ductility at a rather low filler content (1.0 % by weight). For biological properties, CMCS/MgO composites exhibited excellent antimicrobial activity against Listeria monocytogenes and Shewanella baltica.
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Affiliation(s)
- Yanbo Wang
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Congnan Cen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Jian Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Linglin Fu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China.
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Wang Q, Ren T, Zhao J, Wong CH, Chan HYE, Zuo Z. Exclusion of unsuitable CNS drug candidates based on their physicochemical properties and unbound fractions in biomatrices for brain microdialysis investigations. J Pharm Biomed Anal 2020; 178:112946. [PMID: 31727358 DOI: 10.1016/j.jpba.2019.112946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 10/03/2019] [Accepted: 10/19/2019] [Indexed: 10/25/2022]
Abstract
Microdialysis has been the only direct method of continuously measuring the unbound drug concentrations in extracellular fluid at a specific brain region with respect to time in the same animal. However, not every compound is suitable for microdialysis system as demonstrated by their inconsistent "by gain" and "by loss" in-vitro microdialysis probe recoveries leading to over- or under- estimated in-vivo concentrations. Therefore, our current study was proposed aiming to develop simple exclusion criteria for drug candidates that are not suitable for microdialysis system investigation. Through literature research, the properties ((LogP, pKa, water solubility and unbound fraction in plasma and brain) of drugs that have been reported for microdialysis studies were summarized. The exclusion criteria were developed by evaluating the impact of such properties on the consistency of in-vitro "by gain" and "by loss" recoveries of microdialysis probe. As a result, forty-five compounds were identified from literatures, among which doxorubicin, docetaxel, omeprazole, donepezil and phenytoin were found to have inconsistent in-vitro "by gain" and "by loss" microdialysis probe recoveries and subsequently selected for the exclusion criteria analysis. It was found that compounds with limited water solubility (less than 1 g/L) and unbound fraction in plasma (fu,plasma less than 30%) and brain homogenate (fu,brain less than 10%) were more likely to have inconsistent "by gain" and "by loss" microdialysis probe recoveries. Our proposed exclusion criteria were further validated using carbamazepine (limited water solubility only), DB213 (limited fu,brain only) and piperine (both limited water solubility and limited fu,plasma, fu,brain). Our current proposed exclusion criteria will help excluding the CNS drug candidates that are highly unlikely suitable for brain microdialysis approach leading to a better success rate in brain microdialysis approach development.
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Affiliation(s)
- Qianwen Wang
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Tianjing Ren
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Jiajia Zhao
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Chun-Ho Wong
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - H Y Edwin Chan
- School of Life Sciences, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong; Gerald Choa Neuroscience Centre, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong
| | - Zhong Zuo
- School of Pharmacy, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong.
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Wang SJ, Liu Y, Li Y, He L, Gou ML. [Preparation and Characterization of Netupitant-loaded mPEG-PDLLA Nanoparticles]. Sichuan Da Xue Xue Bao Yi Xue Ban 2019; 50:896-900. [PMID: 31880124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Methoxy poly (ethylene glycol)-poly (lactic acid) (mPEG-PDLLA) was used to increase water solubility of netupitant, thus to provide the experimental basis for development of the injection of netupitant. METHODS Film hydration method was ultilized to prepare the netupitant-loaded mPEG-PDLLA nanoparticles (NT/mPEG-PDLLA-NPs). The preparation formulation and technology were optimized based on the single factor tests by investigating the effect of netupitant/mPEG-PDLLA mass ratio (m/m), filming temperature and time on the mean particle diameters and loading capacities. The size distributions and Zeta potentials of NT/mPEG-PDLLA-NPs were investigated using dynamic light scattering analysis, and the morphology was observed under the transmission electron microscope (TEM). The cytotoxicity of NT/mPEG-PDLLA-NPs evaluated by MTT method. RESULTS The optimal NT/mPEG-PDLLA-NPs were achieved at the netupitant/mPEG-PDLLA mass ratio of 1/6 with filming temperature at 55 ℃ and filming time for 30 min. The resulting NT/mPEG-PDLLA-NPs displayed an opalescent and translucent appearance, with a high loading capacity of 14% and netupitant concentration of 10 mg/mL. NT/mPEG-PDLLA-NPs showed a spherical morphology, with a mean diameter of 58 nm and a nearly neutral Zeta potential of -0.29 mV. The NT/mPEG-PDLLA-NPs showed a cytotoxicity similar to free NT. CONCLUSION Netupitant was successfully loaded into mPEG-PDLLA-NPs to significantly increased the water solubility, thus providing the experimental foundation for the further development of injection of netupitant.
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Affiliation(s)
- Shu-Juan Wang
- Department of Biotherapy, Cancer Center, Sichuan University, Chengdu 610041, China
- School of chemical engineering, Changchun University of Technology, Changchun 130012, China
- Sinopharm A-THINK Pharmaceutical Co., Ltd., Changchun 130016, China
| | - Yu Liu
- Department of Biotherapy, Cancer Center, Sichuan University, Chengdu 610041, China
| | - Yang Li
- Department of Biotherapy, Cancer Center, Sichuan University, Chengdu 610041, China
| | - Long He
- Beijing Funhau Medicine Technology Co., Ltd., Beijing 100176, China
| | - Ma-Ling Gou
- Department of Biotherapy, Cancer Center, Sichuan University, Chengdu 610041, China
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Su Z, Han Q, Zhang F, Meng X, Liu B. Preparation, characterization and antibacterial properties of 6-deoxy-6-arginine modified chitosan. Carbohydr Polym 2019; 230:115635. [PMID: 31887858 DOI: 10.1016/j.carbpol.2019.115635] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 09/25/2019] [Accepted: 11/16/2019] [Indexed: 12/28/2022]
Abstract
In this study, 6-deoxy-6-arginine modified chitosan (DAC), was synthesized and characterized by Fourier Transform Infrared Spectroscopy (FTIR), 1H and 13C nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC) and elemental analysis. The arginine was grafted onto C6 groups of chitosan. Antibacterial activity of DAC against gram-negative bacteria Escherichia coli (E. coli) and gram-positive bacteria Staphylococcus aureus (S. aureus) were investigated at concentration between 0.02 mg/mL and 10 mg/mL. Cell viability assessment was estimated in vitro with Caco-2 and L929 cells. Water solubility of DAC at different pH was also evaluated. The results showed that the minimum inhibitory concentration (MICs) of DAC against S. aureus and E. coli were 0.078 mg/mL and 0.312 mg/mL, respectively. The minimum bactericidal concentration (MBC) against S. aureus and E. coli was 0.625 mg/mL. The cytotoxicity of chitosan and DAC was not significantly different. It demonstrated that DAC might be a potential safe antibacterial agent.
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Affiliation(s)
- Zhiwei Su
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Qiming Han
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Fang Zhang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China
| | - Xianghong Meng
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China; Pilot National Laboratory for Marine Science and Technology, Qingdao 266235, China.
| | - Bingjie Liu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China.
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Shibuya K, Ohara N, Ono S, Matsuzaki K, Yoshiyama M. Influence of 10-MDP concentration on the adhesion and physical properties of self-adhesive resin cements. Restor Dent Endod 2019; 44:e45. [PMID: 31799172 PMCID: PMC6875540 DOI: 10.5395/rde.2019.44.e45] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/11/2019] [Accepted: 10/12/2019] [Indexed: 11/11/2022] Open
Abstract
Objectives Self-adhesive resin cements contain functional monomers that enable them to adhere to the tooth structure without a separate adhesive or etchant. One of the most stable functional monomers used for chemical bonding to calcium in hydroxyapatite is 10-methacryloyloxydecyl dihydrogen phosphate (10-MDP). The aim of this study was to evaluate the influence of the10-MDP concentration on the bond strength and physical properties of self-adhesive resin cements. Materials and Methods We used experimental resin cements containing 3 different concentrations of 10-MDP: 3.3 wt% (RC1), 6.6 wt% (RC2), or 9.9 wt% (RC3). The micro-tensile bond strength of each resin cement to dentin and a hybrid resin block (Estenia C&B, Kuraray Noritake Dental) was measured, and the fractured surface morphology was analyzed. Further, the flexural strength of the resin cements was measured using the three-point bending test. The water sorption and solubility of the cements following 30 days of immersion in water were measured. Results The bond strength of RC2 was significantly higher than that of RC1. There was no significant difference between the bond strength of RC2 and that of RC3. The water sorption of RC3 was higher than that of any other cement. There were no significant differences in the three-point bending strength or water solubility among all three types of cements. Conclusions Within the limitations of this study, it is suggested that 6.6 wt% 10-MDP showed superior properties than 3.3 wt% or 9.9 wt% 10-MDP in self-adhesive resin cement.
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Affiliation(s)
- Kazuhiko Shibuya
- Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Naoko Ohara
- Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Serina Ono
- Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kumiko Matsuzaki
- Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masahiro Yoshiyama
- Department of Operative Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Tang X, Sun H, Nie J, Han X, Zhao Y, Zhang R, Ni Z. An o-hydroxyl aldehyde structure based naphthalimide derivative: Reversible photochromic properties and its application in ClO - detection in living cells. Spectrochim Acta A Mol Biomol Spectrosc 2019; 219:154-163. [PMID: 31035125 DOI: 10.1016/j.saa.2019.04.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 04/12/2019] [Accepted: 04/18/2019] [Indexed: 06/09/2023]
Abstract
A bifunctional organic compound 2-butyl-6-hydroxy-1,3-dioxo-2,3-dihydro-1H-benzo[de] isoquinoline-5-carbaldehyde (BHC) with photochromic properties in solid state and probe detection for ClO- in complete water solution was synthesized and fully characterized. A 'white-yellow-white' reversible photochromic behavior could be observed when alternating UV/vis light irradiation on the solid BHC powder. Good fatigue resistance and adjustable bleaching rate were shown when heating conditions changes. In addition, BHC displayed a high selectivity and low detection limit (1.16 × 10-8 M) for ClO-. The photoluminescent fluorescence "on-off" recognition result can be easily identified and BHC has been tested for safely imaging living cells and detecting hypochlorite anion in vitro and vivo. A better water solubility of BHC effectively reduces damage caused by organic solvent in cell imaging progress.
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Affiliation(s)
- Xinxue Tang
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China
| | - Hao Sun
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China
| | - Jing Nie
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China
| | - Xiang'en Han
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China.
| | - Yun Zhao
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China
| | - Ran Zhang
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China
| | - Zhonghai Ni
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, People's Republic of China.
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Pawlowski S, Lanzinger AC, Dolich T, Füßl S, Salinas ER, Zok S, Weiss B, Hefner N, Van Sloun P, Hombeck H, Klingelmann E, Petersen-Thiery M. Evaluation of the bioaccumulation of octocrylene after dietary and aqueous exposure. Sci Total Environ 2019; 672:669-679. [PMID: 30974358 DOI: 10.1016/j.scitotenv.2019.03.237] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 06/09/2023]
Abstract
Octocrylene is used as UV filter in personal care products with a high production volume and can be detected in surface water and biota. It is liquid at ambient temperature, highly lipophilic, has a high adsorption capacity to organic material and is considered as persistent in the environment. The very low water solubility complicates the evaluation of potential long-term effects in aquatic toxicity testing, since effect thresholds are often above the water solubility limit. Thus, the evaluation of the bioaccumulation potential becomes highly relevant for the assessment of long-term environmental effects. However, even the determination of the water solubility limit for a substance with such difficult properties is challenging. The following experiments are described, and results compared to available environmental monitoring data: A bioconcentration study with aqueous exposure (BCF) in zebrafish and a biomagnification study with dietary exposure (BMF) in rainbow trout, as well as supporting experiments to evaluate the water solubility. The growth and lipid corrected BCF determined by aqueous exposure was 858 L kg-1 while the corrected BMF was 0.0335. The model-based estimation of the BCF from BMF (152-1182 L kg-1) is in good agreement with the measured BCF value. Environmental monitoring data provide only limited information on the bioaccumulation potential of octocrylene, as only few investigations were made in biota and water in parallel and concentrations of octocrylene vary by several orders of magnitude during seasons. Based on the determined fish BCF data, we conclude that OCR is not bioaccumulative according to the criteria as laid down by ECHA, 2017. Furthermore, the low BMF value indicates no accumulation along the food chain.
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Affiliation(s)
| | | | | | | | | | | | | | - Nicola Hefner
- DSM Nutritional Products AG, Wurmisweg 576, 4303 Kaiseraugst, Switzerland
| | - Petra Van Sloun
- Merck KGaA, Frankfurter Straße 250, 64293 Darmstadt, Germany
| | - Helena Hombeck
- Merck KGaA, Frankfurter Straße 250, 64293 Darmstadt, Germany
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