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Ren X, Chen H, Wang H, Wang Y, Huang C, Pan H. Advances in the pharmacological effects and mechanisms of Nelumbo nucifera Gaertn. extract Nuciferine. J Ethnopharmacol 2024:118262. [PMID: 38670406 DOI: 10.1016/j.jep.2024.118262] [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] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 04/05/2024] [Accepted: 04/24/2024] [Indexed: 04/28/2024]
Abstract
ETHNOPHARMACOLOGIC RELEVANCE The leaves of Nelumbo nucifera Gaertn. are recorded in the earliest written documentation of traditional Chinese medicinal as "Ben Cao Gang Mu", a medicinal herb for blood clotting, dysentery and dizziness. Nuciferine, one of N. nucifera Gaertn. leaf extracts, has been shown to possess several pharmacological properties, including but not limited to ameliorating hyperlipidemia, stimulating insulin secretion, inducing vasodilation, reducing blood pressure, and demonstrating anti-arrhythmic properties. AIM OF THE STUDY In light of the latest research findings on nuciferine, this article provides a comprehensive overview of its chemical properties, pharmacological activities, and the underlying regulatory mechanisms. It aims to serve as a dependable reference for further investigations into the pharmacological effects and mechanisms of nuciferine. MATERIALS AND METHODS Use Google Scholar, Scifinder, PubMed, Springer, Elsevier, Wiley, Web of Science and other online database search to collect the literature on extraction, separation, structural analysis and pharmacological activity of nuciferine published before November 2023. The key words are "extraction", "isolation", "purification" and "pharmacological action" and "nuciferine". RESULTS Nuciferine has been widely used in the treatment of ameliorating hyperlipidemia and lose weight, Nuciferine is a monomeric aporphine alkaloid extracted from the leaves of the plant Nymphaea caerulea and Nelumbo nucifera Gaertn. Nuciferine has pharmacological activities such as relaxing smooth muscles, improving hyperlipidemia, stimulating insulin secretion, vasodilation, inducing hypotension, antiarrhythmic effects, and antimicrobial and anti-HIV activities. These pharmacological properties lay a foundation for the treatment of tumors, inflammation, hyperglycemia, lipid-lowering and weight-loss , oxidative stress and other diseases with nuciferine. CONCLUSION Nuciferine has been clinically used to treat hyperlipidemia and aid in weight loss due to its effects on lipid levels, insulin secretion, vasodilation, blood pressure reduction, anti-tumor properties, and immune enhancement. However, other potential benefits of nuciferine have not yet been fully explored in clinical practice. Future research should delve deeper into its molecular structure, toxicity, side effects, and clinical pharmacology to uncover its full range of effects and pave the way for its safe and expanded clinical use.
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Affiliation(s)
- Xinshui Ren
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, People's Republic of China; Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China
| | - Hua Chen
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, People's Republic of China; Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China
| | - Haibo Wang
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, People's Republic of China; Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China
| | - Yue Wang
- Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China; School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People's Republic of China
| | - Chuanjun Huang
- Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China; School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People's Republic of China
| | - Hongzhi Pan
- Collaborative Research Center, Shanghai University of Medicine and Health Sciences, Shanghai, 201318, People's Republic of China; Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, People's Republic of China.
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Liu L, Sui Y, Wang T, Li X, Chen L, Shi M. Physicochemical and antioxidant properties of pectin from Actinidia arguta Sieb.et Zucc ( A. arguta) extracted by ultrasonic. Front Nutr 2024; 11:1349162. [PMID: 38660064 PMCID: PMC11041822 DOI: 10.3389/fnut.2024.1349162] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 03/18/2024] [Indexed: 04/26/2024] Open
Abstract
Pectin was extracted from Actinidia arguta Sieb. et Zucc (A.arguta) using the ultrasound-assisted acid method and the single acid method. The physicochemical properties, structure, and antioxidant properties of two different pectins were investigated. The results showed that the extraction yield of the ultrasound-assisted acid method is higher than that of the single acid method. The molecular structure of A. arguta pectin extracted by the ultrasound-assisted acid method belongs to a mixed structure of RG-I and HG-type domains. Through structural feature analysis, the ultrasound-assisted extraction pectin (UAP) has a more branched structure than the single acid-extracted pectin (SAP). The SAP has a higher degree of esterification than the UAP. The physical property results show that the viscosity, solubility, and water-holding capacity of the UAP are better than those of the SAP. The antioxidant test results show that the hydroxyl radical scavenging and reducing powers of the UAP are superior to those of the SAP. This study shows the composition, physicochemical properties, and antioxidant activity of A. arguta pectin extracted by the ultrasonic-assisted extraction method to provide a theoretical basis for its application as an antioxidant and other food additives in the food industry.
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Affiliation(s)
- Liqi Liu
- College of Food Science and Engineering, Changchun University, Changchun, China
| | - Yuhan Sui
- College of Food Science and Engineering, Changchun University, Changchun, China
| | - Tienan Wang
- College of Food Science and Engineering, Changchun University, Changchun, China
| | - Xiang Li
- College of Food Science and Engineering, Changchun University, Changchun, China
| | - Lina Chen
- College of Food Science and Engineering, Changchun University, Changchun, China
| | - Mao Shi
- Jilin Provincial Center for Disease Control and Prevention, Changchun, China
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von Borries K, Holmquist H, Kosnik M, Beckwith KV, Jolliet O, Goodman JM, Fantke P. Potential for Machine Learning to Address Data Gaps in Human Toxicity and Ecotoxicity Characterization. Environ Sci Technol 2023; 57:18259-18270. [PMID: 37914529 PMCID: PMC10666540 DOI: 10.1021/acs.est.3c05300] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 10/12/2023] [Accepted: 10/13/2023] [Indexed: 11/03/2023]
Abstract
Machine Learning (ML) is increasingly applied to fill data gaps in assessments to quantify impacts associated with chemical emissions and chemicals in products. However, the systematic application of ML-based approaches to fill chemical data gaps is still limited, and their potential for addressing a wide range of chemicals is unknown. We prioritized chemical-related parameters for chemical toxicity characterization to inform ML model development based on two criteria: (1) each parameter's relevance to robustly characterize chemical toxicity described by the uncertainty in characterization results attributable to each parameter and (2) the potential for ML-based approaches to predict parameter values for a wide range of chemicals described by the availability of chemicals with measured parameter data. We prioritized 13 out of 38 parameters for developing ML-based approaches, while flagging another nine with critical data gaps. For all prioritized parameters, we performed a chemical space analysis to assess further the potential for ML-based approaches to predict data for diverse chemicals considering the structural diversity of available measured data, showing that ML-based approaches can potentially predict 8-46% of marketed chemicals based on 1-10% with available measured data. Our results can systematically inform future ML model development efforts to address data gaps in chemical toxicity characterization.
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Affiliation(s)
- Kerstin von Borries
- Quantitative
Sustainability Assessment, Department of Environmental and Resource
Engineering, Technical University of Denmark, Bygningstorvet 115, 2800 Kgs. Lyngby, Denmark
| | - Hanna Holmquist
- IVL
Swedish Environmental Research Institute, Aschebergsgatan 44, 411 33 Göteborg, Sweden
| | - Marissa Kosnik
- Quantitative
Sustainability Assessment, Department of Environmental and Resource
Engineering, Technical University of Denmark, Bygningstorvet 115, 2800 Kgs. Lyngby, Denmark
| | - Katie V. Beckwith
- Centre
for Molecular Informatics, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
| | - Olivier Jolliet
- Quantitative
Sustainability Assessment, Department of Environmental and Resource
Engineering, Technical University of Denmark, Bygningstorvet 115, 2800 Kgs. Lyngby, Denmark
| | - Jonathan M. Goodman
- Centre
for Molecular Informatics, Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United
Kingdom
| | - Peter Fantke
- Quantitative
Sustainability Assessment, Department of Environmental and Resource
Engineering, Technical University of Denmark, Bygningstorvet 115, 2800 Kgs. Lyngby, Denmark
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Liu J, Wu Y, Zhou L, Zhang A, Wang S, Liu Y, Yang D, Wang S. Influence of flowering on the anatomical structure, chemical components and carbohydrate metabolism of Bambusa tuldoides culms at different ages. Front Plant Sci 2023; 14:1260302. [PMID: 38023931 PMCID: PMC10656694 DOI: 10.3389/fpls.2023.1260302] [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] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/19/2023] [Indexed: 12/01/2023]
Abstract
Bamboo forests, which have come to occupy large areas in recent years, naturally undergo the process of blooming. However, bamboo culms and rhizomes degenerate after the plants bloom, resulting in widespread loss of raw materials. Systematic research on the properties and physiology of bamboo culms after flowering is lacking, and whether flowering bamboo culms could be used as raw materials in industry is unclear. In this paper, we compared and measured the fiber morphology, chemical components, and sugar metabolism indexes of non-flowering and flowering Bambusa tuldoides culms at different ages. The results showed that the fibers in the middle internodes of both non-flowering and flowering B. tuldoides culms had the longest length. The fibers completed their elongation within 1 year, but the fiber walls were continually deposited with age. The levels of the chemical components in the nonflowering culms also continually increased with age. The nonstructural carbohydrate (NSC) content and sugar metabolism indexes showed the highest levels in the 2-year culms and then declined in the 3-year culms. Compared to young culms that had not yet flowered, the 3-month-old and 1-year-old flowering culms had a significant decrease in the fiber length and tangential diameter, and their holocellulose and lignin levels also decreased, while the levels of ash, SiO2, 1% NaOH extractives, and benzene-ethanol extractives increased. A correlation analysis showed that sugar catabolism was accelerated in the flowering cluster, which could lead to "starvation death" in bamboo and which had a significant negative impact on the anatomical and chemical properties of the bamboo culms. Generally, the flowering bamboo culms had shorter fibers, higher levels of extractives and ash, and lower holocellulose content, which indicated that bamboo flowering has an adverse effect on the application of such components in the production of pulp, in papermaking, and in other processing and utilization activities. This study revealed the physiological changes in flowering B. tuldoides culms and provided a theoretical basis to inform the utilization of culms in this species.
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Affiliation(s)
- Jiaxin Liu
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Yufang Wu
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Li Zhou
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Anmian Zhang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
| | - Sushuang Wang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Yi Liu
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Dejia Yang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
| | - Shuguang Wang
- Faculty of Life Sciences, Southwest Forestry University, Kunming, China
- Faculty of Bamboo and Rattan, Southwest Forestry University, Kunming, China
- Key Laboratory for Forest Resources Conservation and Use in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming, China
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Ahmed MS, Hasan NH, Saeed MG. Chemical analysis of mineral trioxide agregate mixed with hyaluronic acids as an accelerant. Braz Dent J 2023; 34:50-66. [PMID: 38133092 PMCID: PMC10742354 DOI: 10.1590/0103-6440202305549] [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: 05/09/2023] [Accepted: 08/21/2023] [Indexed: 12/23/2023] Open
Abstract
MATERIALS AND METHOD Mineral trioxide aggregate (MTA) has many clinical applications in dentistry; the main drawback is the long setting. The main objective is to investigate and compare the chemical effect of using two commercially available hyaluronic acid hydrogels (HA) instead of distilled water for mixing MTA as an accelerant of setting time. Test materials were divided into three groups; Group 1: (control) mixing MTA with distilled water supplied by the manufacturer; Group 2: mixing MTA with a hybrid cooperative complex of high and low molecular weight HA (Profhilo®); Group 3: mixing MTA with High molecular weight / non-cross-linked HA (Jalupro®). Mixing time, and setting time (initial and final) were determined, Fourier-transform infrared spectroscopy, Energy-dispersive X-ray spectroscopy, Field emission Scanning Electron Microscopy, and X-ray diffraction were performed. RESULTS mixing time, initial, and final setting time for (MTA + HA) groups were significantly different and lower in comparison to the control group (p < 0.05). This study revealed higher expression of calcium silicate hydrate and calcium hydroxide expression with higher Ca release in the MTA + HA group than the control group. CONCLUSION commercially available HA demonstrated better chemical properties when used as a mixing medium for MTA. The Mixing and setting time for MTA + HA group were significantly shorter than those of the control group were. Thus, commercially available HA can be used as a mixing medium for MTA.
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Affiliation(s)
| | - Nadia H. Hasan
- Department of Conservative Dentistry, College of Dentistry,
University of Mosul, Mosul, Iraq
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Chaves YS, da Silveira PHPM, Monteiro SN, Nascimento LFC. Babassu Coconut Fibers: Investigation of Chemical and Surface Properties ( Attalea speciosa.). Polymers (Basel) 2023; 15:3863. [PMID: 37835912 PMCID: PMC10574988 DOI: 10.3390/polym15193863] [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: 07/22/2023] [Revised: 09/09/2023] [Accepted: 09/15/2023] [Indexed: 10/15/2023] Open
Abstract
To complement previous results, an analysis of the chemical and morphological properties of babassu fibers (Attalea speciosa Mart. ex Spreng.) was conducted in order to evaluate their potential as reinforcements in the production of composites with epoxy matrix. The diameter distribution was analyzed in a sample of one hundred fibers, allowing the verification of its variation. The determination of the chemical properties involved experimental analyses of the constituent index and X-ray diffraction. The diffractogram was used to calculate the crystallinity index and the microfibril angle, which are crucial parameters that indicate the consistency of the mechanical properties of babassu fibers and the feasibility of their use in composites. The results revealed that babassu fiber has a chemical composition, with contents of 28.53% lignin, 32.34% hemicellulose, and 37.97% cellulose. In addition, it showed a high crystallinity index of 81.06% and a microfibril angle of 7.67°. These characteristics, together with previous results, indicate that babassu fibers have favorable chemical and morphological properties to be used as reinforcements in composites, highlighting its potential as an important material for applications in technology areas.
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Affiliation(s)
- Yago Soares Chaves
- Department of Materials Science, Military Institute of Engineering-IME, Praça General Tíburcio, 80, Urca, Rio de Janeiro 222290-270, RJ, Brazil; (S.N.M.); (L.F.C.N.)
| | | | - Sergio Neves Monteiro
- Department of Materials Science, Military Institute of Engineering-IME, Praça General Tíburcio, 80, Urca, Rio de Janeiro 222290-270, RJ, Brazil; (S.N.M.); (L.F.C.N.)
| | - Lucio Fabio Cassiano Nascimento
- Department of Materials Science, Military Institute of Engineering-IME, Praça General Tíburcio, 80, Urca, Rio de Janeiro 222290-270, RJ, Brazil; (S.N.M.); (L.F.C.N.)
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Sunanta P, Kontogiorgos V, Pankasemsuk T, Jantanasakulwong K, Rachtanapun P, Seesuriyachan P, Sommano SR. The nutritional value, bioactive availability and functional properties of garlic and its related products during processing. Front Nutr 2023; 10:1142784. [PMID: 37560057 PMCID: PMC10409574 DOI: 10.3389/fnut.2023.1142784] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 07/03/2023] [Indexed: 08/11/2023] Open
Abstract
Garlic, a common culinary spice, is cultivated and used around the globe. Consumption of garlic and its supplements reduces the risk of diabetes and cardiovascular disease and boosts the immune system with antibacterial, antifungal, anti-aging, and anti-cancer properties. Diallyl sulfide, diallyl disulfide, triallyl trisulfide, phenolics, flavonoids, and others are the most commercially recognized active ingredients in garlic and its products. In recent years, global demand for medicinal or functional garlic has surged, introducing several products such as garlic oil, aged garlic, black garlic, and inulin into the market. Garlic processing has been demonstrated to directly impact the availability of bioactive ingredients and the functionality of products. Depending on the anticipated functional qualities, it is also recommended that one or a combination of processing techniques be deemed desirable over the others. This work describes the steps involved in processing fresh garlic into products and their physicochemical alterations during processing. Their nutritional, phytochemical, and functional properties are also reviewed. Considering the high demand for functional food, this review has been compiled to provide guidance for food producers on the industrial utilization and suitability of garlic for new product development.
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Affiliation(s)
- Piyachat Sunanta
- Multidisciplinary Research Institute, Chiang Mai University, Chiang Mai, Thailand
- Plant Bioactive Compound Laboratory (BAC), Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
| | - Vassilis Kontogiorgos
- Food, Nutrition and Health, Faculty of Land and Food Systems, The University of British Columbia, Vancouver, BC, Canada
| | - Tanachai Pankasemsuk
- Department of Plant and Soil Science, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
| | - Kittisak Jantanasakulwong
- School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Pornchai Rachtanapun
- School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Phisit Seesuriyachan
- School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
| | - Sarana Rose Sommano
- Plant Bioactive Compound Laboratory (BAC), Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
- Department of Plant and Soil Science, Faculty of Agriculture, Chiang Mai University, Chiang Mai, Thailand
- Center of Excellence in Agro Bio-Circular-Green Industry (Agro BCG), Agro-Industry, Chiang Mai University, Chiang Mai, Thailand
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Liu Z, Yuan D, Qin X, He P, Fu Y. Effect of Mg-Modified Waste Straw Biochar on the Chemical and Biological Properties of Acidic Soils. Molecules 2023; 28:5225. [PMID: 37446886 DOI: 10.3390/molecules28135225] [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: 05/19/2023] [Revised: 06/30/2023] [Accepted: 07/01/2023] [Indexed: 07/15/2023] Open
Abstract
Biochar is important for soil improvement, fertilizer innovation, and greenhouse gas reduction. In this paper, Mg-modified biochar was prepared from rice and corn straw and mixed with soil at a 1% (w/w) addition in an indoor soil simulation experiment to study the effect of Mg-modified biochar on the chemical properties of acidic soil. The results showed that the addition of Mg-modified biochar reduced soil acidity and improved soil fertility. Compared with the control group, the Mg-modified biochar treatment significantly increased the concentrations of available potassium, available phosphorus, total phosphorus, organic carbon and exchangeable calcium and magnesium in the soil, and effectively increased the concentration of total nitrogen. Rice straw Mg-modified biochar treatment was more effective in increasing the soil-available potassium, available phosphorus, total phosphorus and exchangeable magnesium concentration, while corn straw Mg-modified biochar was more effective in increasing the soil organic carbon and exchangeable calcium concentration. In addition, the high pyrolysis temperature of Mg-modified biochar was more effective in promoting the soil-available potassium, available phosphorus and total nitrogen concentration, while the low pyrolysis temperature of Mg-modified biochar was more effective in promoting soil alkaline nitrogen, exchangeable calcium and magnesium.
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Affiliation(s)
- Zhigao Liu
- College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Nanning 530004, China
| | - Di Yuan
- College of Resources, Environment and Materials, Guangxi University, Nanning 530004, China
- State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Nanning 530004, China
| | - Xianxian Qin
- College of Forestry, Guangxi University, Nanning 530004, China
| | - Peng He
- College of Forestry, Guangxi University, Nanning 530004, China
| | - Yunlin Fu
- College of Forestry, Guangxi University, Nanning 530004, China
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Hu Y, Zhang H, Zou Q, Liu W, Li W, Yan L, Dai H. The effect of silicon groups on the physicochemical property and bioactivity of L-phenylalanine derived poly(amide-imide). J Biomed Mater Res B Appl Biomater 2023. [PMID: 37081804 DOI: 10.1002/jbm.b.35257] [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: 10/06/2022] [Revised: 02/17/2023] [Accepted: 04/01/2023] [Indexed: 04/22/2023]
Abstract
Poly(amide-imide) (PAI), serving as a synthetic polymer, has been widely used in industry for excellent mechanical properties, chemical resistance and high thermal stability. However, lack of suitable cell niche and biological activity limited the further application of PAI in biomedical engineering. Herein, silicon modified L-phenylalanine derived poly(amide-imide) (PAIS) was synthesized by introducing silica to L-phenylalanine derived PAI to improve physicochemical and biological performances. The influence of silicon amount on physicochemical, immune, and angiogenic performances of PAIS were systemically studied. The results show that PAIS exerts excellent hydrophilic, mechanical, biological activity. PAIS shows no effects on the number of macrophages, but can regulate macrophage polarization and angiogenesis in a dose-dependent manner. This study advanced our understanding of silicon modification in PAI can modulate cell responses via initiating silicon concentration regulation. The acquired knowledge will provide a new strategy to design and optimize biomedical PAI in the future.
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Affiliation(s)
- Yaping Hu
- Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Hongbiao Zhang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Qiying Zou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Wenbin Liu
- Department of Orthopedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenqin Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Lesan Yan
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Honglian Dai
- Shenzhen Research Institute of Wuhan University of Technology, Shenzhen, China
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
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Bi YM, Zhang XM, Jiao XL, Li JF, Peng N, Tian GL, Wang Y, Gao WW. The relationship between shifts in the rhizosphere microbial community and root rot disease in a continuous cropping American ginseng system. Front Microbiol 2023; 14:1097742. [PMID: 36865777 PMCID: PMC9971623 DOI: 10.3389/fmicb.2023.1097742] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 01/09/2023] [Indexed: 02/16/2023] Open
Abstract
The root rot disease causes a great economic loss, and the disease severity usually increases as ginseng ages. However, it is still unclear whether the disease severity is related to changes in microorganisms during the entire growing stage of American ginseng. The present study examined the microbial community in the rhizosphere and the chemical properties of the soil in 1-4-year-old ginseng plants grown in different seasons at two different sites. Additionally, the study investigated ginseng plants' root rot disease index (DI). The results showed that the DI of ginseng increased 2.2 times in one sampling site and 4.7 times in another during the 4 years. With respect to the microbial community, the bacterial diversity increased with the seasons in the first, third, and fourth years but remained steady in the second year. The seasonal changing of relative abundances of bacteria and fungi showed the same trend in the first, third, and fourth years but not in the second year. Linear models revealed that the relative abundances of Blastococcus, Symbiobacterium, Goffeauzyma, Entoloma, Staphylotrichum, Gymnomyces, Hirsutella, Penicillium and Suillus spp. were negatively correlated with DI, while the relative abundance of Pandoraea, Rhizomicrobium, Hebeloma, Elaphomyces, Pseudeurotium, Fusarium, Geomyces, Polyscytalum, Remersonia, Rhizopus, Acremonium, Paraphaeosphaeria, Mortierella, and Metarhizium spp. were positively correlated with DI (P < 0.05). The Mantel test showed that soil chemical properties, including available nitrogen, phosphorus, potassium, calcium, magnesium, organic matter, and pH, were significantly correlated to microbial composition. The contents of available potassium and nitrogen were positively correlated with DI, while pH and organic matter were negatively correlated with DI. In summary, we can deduce that the second year is the key period for the shift of the American ginseng rhizosphere microbial community. Disease aggravation after the third year is related to the deterioration of the rhizosphere microecosystem.
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Affiliation(s)
- Yan-Meng Bi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, China
| | - Xi-Mei Zhang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,School of Biology and Brewing Engineering, Taishan University, Tai'an, Shandong, China
| | - Xiao-Lin Jiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,Biomedicine School, Beijing City University, Beijing, China
| | - Jun-Fei Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Na Peng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Gei-Lin Tian
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,College of Agricultural and Biological Engineering, Heze University, Heze, Shandong, China
| | - Yi Wang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei-Wei Gao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China,*Correspondence: Wei-Wei Gao ✉
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Mieles-Gómez L, Quintana SE, García-Zapateiro LA. Ultrasound-Assisted Extraction of Mango ( Mangifera indica) Kernel Starch: Chemical, Techno-Functional, and Pasting Properties. Gels 2023; 9:gels9020136. [PMID: 36826306 PMCID: PMC9956994 DOI: 10.3390/gels9020136] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023] Open
Abstract
(1) Background: Starch is the main component of mango (Mangifera indica) kernel, making it an alternative to obtain an ingredient from a non-conventional source with potential application in food and other industrial applications; however, reports on the use of new extraction techniques for this material are scarce. The main objective of this research was to evaluate the effect of ultrasound-assisted extraction (UAE) on the yield, chemical, techno-functional, rheological, and pasting properties of starch isolated from a non-conventional source such as a mango kernel. (2) Methods: Different power sonication conditions (120, 300, and 480 W) and sonication time (10, 20, and 30 min) were evaluated along with a control treatment (extracted by the wet milling method). (3) Results: Ultrasound-assisted extraction increases starch yield, with the highest values (54%) at 480 W and 20 min. A significant increase in the amylose content, water-holding capacity, oil-holding capacity, solubility, and swelling power of ultrasonically extracted starches was observed. Similarly, mango kernel starch (MKS) exhibited interesting antioxidant properties. The sol-gel transition temperature and pasting parameters, such as the breakdown viscosity (BD) and the setback viscosity (SB), decreased with ultrasound application; (4) Conclusion: indicating that ultrasound caused changes in physical, chemical, techno-functional, rheological, and pasting properties, depending on the power and time of sonication, so it can be used as an alternative starch extraction and modification technique, for example, for potential application in thermally processed food products such as baked goods, canned foods, and frozen foods.
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del Ángel-González A, Tapía-Higuera GD, Rivera-Ortiz I, Castillo-Robles JA, Rodríguez-García JA, Calles-Arriaga CA, Miranda-Hernández JG, Rocha-Rangel E. Microstructure, Phase Evolution, and Chemical Behavior of CrCuFeNiTiAlx High Entropy Alloys Processed by Mechanical Alloying. Entropy (Basel) 2023; 25:256. [PMID: 36832624 PMCID: PMC9955146 DOI: 10.3390/e25020256] [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] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 01/16/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
High entropy alloys (HEAs) of the type CrCuFeNiTi-Alx were processed through mechanical alloying. The aluminum concentration was varied in the alloy, to determine its effect on the HEAs' microstructure, phase formation, and chemical behavior. X-ray diffraction studies performed on the pressureless sintered samples revealed the presence of structures composed of face centered cubic (FCC) and body centered cubic (BCC) solid-solution phases. Since the valences of the elements that form the alloy are different, a nearly stoichiometric compound was obtained, increasing the final entropy of the alloy. The aluminum was partly responsible for this situation, which also favored transforming part of the FCC phase into BCC phase on the sintered bodies. X-ray diffraction also indicated the formation of different compounds with the alloy's metals. Bulk samples exhibited microstructures with different phases. The presence of these phases and the results of the chemical analyses revealed the formation of alloying elements that, in turn, formed a solid solution and, consequently, had a high entropy. From the corrosion tests, it could be concluded that the samples with a lower aluminum content were the most resistant to corrosion.
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Affiliation(s)
- Anay del Ángel-González
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
| | - Greysi D. Tapía-Higuera
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
| | - Ibeth Rivera-Ortiz
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
| | - José A. Castillo-Robles
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
| | - José A. Rodríguez-García
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
| | - Carlos A. Calles-Arriaga
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
| | - José G. Miranda-Hernández
- Centro Universitario UAEM Valle de México, Laboratorio de Investigación y Desarrollo de Materiales Industriales, Universidad Autónoma del Estado de México, Atizapán de Zaragoza 54500, Mexico
| | - Enrique Rocha-Rangel
- Departamento de Investigación y Posgrado, Universidad Politécnica de Victoria, Ciudad Victoria 87138, Mexico
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13
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Li QM, Zhang D, Zhang JZ, Zhou ZJ, Pan Y, Yang ZH, Zhu JH, Liu YH, Zhang LF. Crop rotations increased soil ecosystem multifunctionality by improving keystone taxa and soil properties in potatoes. Front Microbiol 2023; 14:1034761. [PMID: 36910189 PMCID: PMC9995906 DOI: 10.3389/fmicb.2023.1034761] [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: 09/02/2022] [Accepted: 01/10/2023] [Indexed: 02/25/2023] Open
Abstract
Continuous cropping of the same crop leads to soil degradation and a decline in crop production, and these impacts could be mitigated through rotation cropping. Although crop rotation enhances soil fertility, microbial community diversity, and potato yield, its effects on the soil ecosystem multifunctionality (EMF) remain unclear. In the present research, we comparatively examined the effects of potato continuous cropping (PP) and rotation cropping [potato-oat rotation (PO) and potato-forage maize rotation (PFM)] on the soil EMF as well as the roles of keystone taxa, microbes abundance, and chemical properties in EMF improvement. It was demonstrated that soil EMF is increased in rotation cropping (PO and PFM) than PP. Soil pH was higher in rotation cropping (PO and PFM) than in PP, while total phosphorus (TP) and available phosphorus (AP) were significantly decreased than that in PP. Rotation cropping (PO and PFM) markedly changed the bacterial and fungal community compositions, and improved the potential plant-beneficial fungi, e.g., Schizothecium and Chaetomium, while reducing the abundances of the potentially phytopathogenic fungi, e.g., Alternaria, Fusarium, Verticillium dahiae, Gibberella, Plectosphaerella, Colletotrichum, Phoma, and Lectera in comparison with PP. Also, co-occurrence patterns for bacteria and fungi were impacted by crop rotation, and keystone taxa, e.g., Nitrospira.1, Lysinibacillus, Microlunatus.1, Sphingomonas.3, Bryobacter.1, Micromonospora, and Schizothecium, were enriched in PO and PFM than PP. The structural equation model (SEM) further demonstrated that cropping systems increased soil ecosystem multifunctionality through regulating SOM and keystone taxa (Schizothecium1), and keystone taxa were mediated by soil pH. This study suggested that rotation cropping might contribute to the improvement of soil ecosystem multifunctionality as well as the development of disease-suppressive soils in comparison with potato continuous cropping.
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Affiliation(s)
- Qing-Mei Li
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China.,College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Dai Zhang
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China.,College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Ji-Zong Zhang
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Zhi-Jun Zhou
- Practice and Training Center, Hebei Agricultural University, Baoding, China
| | - Yang Pan
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China.,College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Zhi-Hui Yang
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China.,College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Jie-Hua Zhu
- Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province, Baoding, China.,College of Plant Protection, Hebei Agricultural University, Baoding, China
| | - Yu-Hua Liu
- College of Agronomy, Hebei Agricultural University, Baoding, China
| | - Li-Feng Zhang
- College of Agronomy, Hebei Agricultural University, Baoding, China
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14
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Zhou X, Shao Y, Li S, Zhang S, Ding C, Zhuang L, Sun J. An intravenous anesthetic drug-propofol, influences the biological characteristics of malignant tumors and reshapes the tumor microenvironment: A narrative literature review. Front Pharmacol 2022; 13:1057571. [PMID: 36506511 PMCID: PMC9732110 DOI: 10.3389/fphar.2022.1057571] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/15/2022] [Indexed: 11/27/2022] Open
Abstract
Malignant tumors are the second leading cause of death worldwide. This is a public health concern that negatively impacts human health and poses a threat to the safety of life. Although there are several treatment approaches for malignant tumors, surgical resection remains the primary and direct treatment for malignant solid tumors. Anesthesia is an integral part of the operation process. Different anesthesia techniques and drugs have different effects on the operation and the postoperative prognosis. Propofol is an intravenous anesthetic that is commonly used in surgery. A substantial number of studies have shown that propofol participates in the pathophysiological process related to malignant tumors and affects the occurrence and development of malignant tumors, including anti-tumor effect, pro-tumor effect, and regulation of drug resistance. Propofol can also reshape the tumor microenvironment, including anti-angiogenesis, regulation of immunity, reduction of inflammation and remodeling of the extracellular matrix. Furthermore, most clinical studies have also indicated that propofol may contribute to a better postoperative outcome in some malignant tumor surgeries. Therefore, the author reviewed the chemical properties, pharmacokinetics, clinical application and limitations, mechanism of influencing the biological characteristics of malignant tumors and reshaping the tumor microenvironment, studies of propofol in animal tumor models and its relationship with postoperative prognosis of propofol in combination with the relevant literature in recent years, to lay a foundation for further study on the correlation between propofol and malignant tumor and provide theoretical guidance for the selection of anesthetics in malignant tumor surgery.
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Affiliation(s)
- Xueliang Zhou
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China/
| | - Yanfei Shao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China/
| | - Shuchun Li
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sen Zhang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China/
| | - Chengsheng Ding
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Institute of Digestive Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China/
| | - Lei Zhuang
- Department of Anesthesiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China,*Correspondence: Jing Sun, ; Lei Zhuang,
| | - Jing Sun
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Shanghai Minimally Invasive Surgery Center, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Jing Sun, ; Lei Zhuang,
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15
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El-Sohaimy SA, Androsova NV, Toshev AD, El Enshasy HA. Nutritional Quality, Chemical, and Functional Characteristics of Hemp (Cannabis sativa ssp. sativa) Protein Isolate. Plants (Basel) 2022; 11:plants11212825. [PMID: 36365277 PMCID: PMC9656340 DOI: 10.3390/plants11212825] [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] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 10/20/2022] [Accepted: 10/20/2022] [Indexed: 06/01/2023]
Abstract
(1) Background: Hemp seeds are a source of plant-based protein, making them an appropriate supplement to a plant-based diet. The current work was focused on the preparation of the protein isolate from the hemp seeds with eco-friendly and cheap technology. Moreover, it evaluated the physicochemical and functional properties of hemp protein isolate for its potential application in food manufacturing. (2) Methods: The protein content of hemp seeds has been isolated through two main steps: (1) extraction of the protein content of an alkaline pH (10-12); (2) precipitation of the extracted protein on an acidic pH as an isoelectric point (pH = 4.5). (3) Results: The edastin protein is the most predominant protein in the protein profile with a molecular weight of 58.1 KDa beside albumin with a molecular weight of 31.5 KDa. The FTIR spectrum detected the absorption peaks of the amide I at 1750 and 1600 cm-1, which pointed to C=O stretching while N-H stretching at 1650-1580 cm-1. The peak at 3250 is found to be related to N-H stretching of the aliphatic primary amine (3400-3300 cm-1) and the N-H stretching for the secondary (II) amine appeared at 3350-3310 cm-1. The Hemp protein isolate (HPI) showed a high content of arginine (15.52 g/100 g), phenylalanine + tyrosine (9.63 g/100 g), methionine + cysteine (5.49 g/100 g), leucine + isoleucine (5.21 g/100 g), and valine (4.53 g/100 g). It contains a moderate level of threonine (3.29 g/100 g) and lysine (2.50 g/100 g) with tryptophan as the limiting amino acid (0.22 g/100 g). The HPI showed an appropriate water-and-oil holding capacity (4.5 ± 2.95 and 2.33 ± 1.88 mL/g, respectively). The foaming capacity of the HPI was increased with increasing the pH values to reach the maximum value at pH 11 (67.23 ± 3.20%). The highest emulsion ability index of the HPI was noted at pH 9 (91.3 ± 2.57 m2/g) with low stability (19.15 ± 2.03). (4) Conclusions: A strong positive correlation (r = 0.623) was shown between protein concentration and solubility. The current easy-to-use, cheap, and eco-friendly technology provides the industrial sector with a cheap protein isolate for manufacturing protein-rich diet and beverages. The HPI showed a good nutritional quality and functional properties that might be helpful in utilizing it in different food products such as beverages and bakery products.
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Affiliation(s)
- Sobhy Ahmed El-Sohaimy
- Department of Technology and Organization of Public Catering, Institute of Sport Tourism and Service, South Ural State University, 4544080 Chelyabinsk, Russia
- Department of Food Technology, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications, Alexandria 21934, Egypt
| | - Natalia Vladimirovna Androsova
- Department of Technology and Organization of Public Catering, Institute of Sport Tourism and Service, South Ural State University, 4544080 Chelyabinsk, Russia
| | - Abduvali Djabarovich Toshev
- Department of Technology and Organization of Public Catering, Institute of Sport Tourism and Service, South Ural State University, 4544080 Chelyabinsk, Russia
| | - Hesham Ali El Enshasy
- Institute of Bioproduct Development (IBD), Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
- Faculty of Chemical and Energy Engineering, Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
- City of Scientific Research and Technology Applications (SRTA), New Burg Al Arab, Alexandria 21934, Egypt
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Padmakumar I, Hinduja D, Mujeeb A, Kachenahalli Narasimhaiah R, Kumar Saraswathi A, Mirza MB, Robaian A, Basheer SN, Karobari MI, Scardina GA. Evaluation of Effects of Various Irrigating Solutions on Chemical Structure of Root Canal Dentin Using FTIR, SEM, and EDS: An In Vitro Study. J Funct Biomater 2022; 13:jfb13040197. [PMID: 36278666 PMCID: PMC9590088 DOI: 10.3390/jfb13040197] [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: 09/19/2022] [Revised: 10/14/2022] [Accepted: 10/14/2022] [Indexed: 12/02/2022] Open
Abstract
Background: Sequential chemical application for irrigating a root canal during chemomechanical debridement can affect the dentin microstructure. Understanding the effects of various irrigants on chemical properties of dentin can elucidate their effects on physical properties and thereby explain the higher incidence of structural failure in endodontically treated teeth. This in vitro research aimed to compare and evaluate the effects of three different irrigating solutions on the chemical structure of root canal dentin in extracted human teeth. Methods: Forty-eight extracted single-rooted mandibular premolar teeth were sectioned at the cemento−enamel junction by a diamond disc and were then randomly assigned to four groups of twelve samples each. The groups were irrigated using 5.25% NaOCl, ozonated olive oil, silver citrate, or distilled water. Dentin sections measuring 1.5 mm were obtained from the root portion and each section and were analyzed using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and electron-dispersive spectroscopy (EDS). FTIR and EDS values are reported as means ± standard deviations. Data were analyzed using an ANOVA and a post hoc Bonferroni test (p < 0.05). Results: A comparison of the FTIR and EDS values among the groups using ANOVA revealed statistically significant differences in the organic and inorganic peak values among the groups. An intergroup comparison between NaOCl with silver citrate and ozonated olive oil revealed significant reductions in the carbonate and phosphate peak values in the NaOCl group (p < 0.05). The EDS values tabulated for the carbon, oxygen, phosphorous, and calcium peak levels showed significant differences between the groups using an ANOVA. An SEM analysis was conducted under 1500× magnification, which revealed smear layer removal in the silver citrate group. Conclusions: The silver citrate solution and the ozonated olive oil caused less changes in the organic and mineral contents of dentin than sodium hypochlorite.
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Affiliation(s)
- Indu Padmakumar
- Department of Conservative Dentistry and Endodontics, SJM Dental College and Hospital, Chitradurga 577501, Karnataka, India
| | - Dharam Hinduja
- Department of Conservative Dentistry and Endodontics, SJM Dental College and Hospital, Chitradurga 577501, Karnataka, India
| | - Abdul Mujeeb
- Department of Conservative Dentistry and Endodontics, SJM Dental College and Hospital, Chitradurga 577501, Karnataka, India
- Correspondence: (A.M.); (M.I.K.); (G.A.S.)
| | | | - Ashwini Kumar Saraswathi
- Department of Conservative Dentistry and Endodontics, SJM Dental College and Hospital, Chitradurga 577501, Karnataka, India
| | - Mubashir Baig Mirza
- Conservative Dental Science Department, College of Dentistry, Prince Sattam bin Abdulaziz University, AlKharj 11942, Saudi Arabia
| | - Ali Robaian
- Conservative Dental Science Department, College of Dentistry, Prince Sattam bin Abdulaziz University, AlKharj 11942, Saudi Arabia
| | - Syed Nahid Basheer
- Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan 45142, Saudi Arabia
| | - Mohmed Isaqali Karobari
- Department of Conservative Dentistry & Endodontics, Saveetha Dental College & Hospitals, Saveetha Institute of Medical and Technical Sciences University, Chennai 600077, Tamil Nadu, India
- Department of Restorative Dentistry & Endodontics, Faculty of Dentistry, University of Puthisastra, Phnom Penh 12211, Cambodia
- Correspondence: (A.M.); (M.I.K.); (G.A.S.)
| | - Giuseppe Alessandro Scardina
- Department of Surgical, Oncological and Stomatological Disciplines, University of Palermo, 90133 Palermo, Italy
- Correspondence: (A.M.); (M.I.K.); (G.A.S.)
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17
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Damasceno FA, Day GB, Taraba JL, Barbari M, Oliveira CEA, Frigeri KDM, Vieira FMC, Bambi G. Determination of Thermal, Chemical and Physical Properties of Bedding Materials for Compost Dairy Barns. Animals (Basel) 2022; 12:ani12182450. [PMID: 36139313 PMCID: PMC9495096 DOI: 10.3390/ani12182450] [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: 08/12/2022] [Revised: 09/13/2022] [Accepted: 09/15/2022] [Indexed: 11/30/2022] Open
Abstract
The thermal, chemical, and physical properties of compost bedding materials play an important role in every phase of compost production. Based on this, we aimed to assess the thermal, chemical and physical properties of bedding materials for compost-bedded pack (CBP) barns. The database for this study was registered from 42 CBP barns, distributed throughout the state of Kentucky (USA). The thermal conductivity showed a linear relationship with moisture content and bulk density, while thermal resistivity decreased with increasing particle size. The bedding moisture average was 46.8% (±11.5). The average finer index (p < 0.05) was the highest weight percentage (30.1%) in the samples studied. Water-holding capacity (WHC) increased with increasingly fine particle size. The higher bulk density value was 3.6 times that of the lowest bulk density value. The chemical characterization of the bedding material provided the following results: 42.7% (±3.8%) C, 1.6% (±0.4%) N, and 28.2 (±8.0) C:N ratio. However, thermal properties are strongly dependent on particle size. Producers can use the bedding material as fertilizer in their crops, due to the chemical characteristics of the materials. Beds with good physical and chemical properties improve their moisture content.
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Affiliation(s)
- Flávio Alves Damasceno
- Department of Engineering, Federal University of Lavras (UFLA), Lavras 37200-900, MG, Brazil
- Correspondence:
| | - George B. Day
- Department of Agricultural Engineering, University of Kentucky, Lexington, KY 40502, USA
| | - Joseph L. Taraba
- Department of Agricultural Engineering, University of Kentucky, Lexington, KY 40502, USA
| | - Matteo Barbari
- Department of Agriculture, Food, Environment and Forestry, University of Firenze, 50145 Firenze, Italy
| | | | - Karen Dal Magro Frigeri
- Biometeorology Study Group, Federal University of Technology—Paraná (UTFPR), Dois Vizinhos 85660-000, PR, Brazil
| | | | - Gianluca Bambi
- Department of Agriculture, Food, Environment and Forestry, University of Firenze, 50145 Firenze, Italy
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18
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Du Q, Meng X, Wang S. A Comprehensive Review on the Chemical Properties, Plant Sources, Pharmacological Activities, Pharmacokinetic and Toxicological Characteristics of Tetrahydropalmatine. Front Pharmacol 2022; 13:890078. [PMID: 35559252 PMCID: PMC9086320 DOI: 10.3389/fphar.2022.890078] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 03/05/2022] [Accepted: 04/06/2022] [Indexed: 11/24/2022] Open
Abstract
Tetrahydropalmatine (THP), a tetrahydroproberine isoquinoline alkaloid, is widely present in some botanical drugs, such as Stephania epigaea H.S. Lo (Menispermaceae; Radix stephaniae epigaeae), Corydalis yanhusuo (Y.H.Chou & Chun C.Hsu) W.T. Wang ex Z.Y. Su and C.Y. Wu (Papaveraceae; Corydalis rhizoma), and Phellodendron chinense C.K.Schneid (Berberidaceae; Phellodendri chinensis cortex). THP has attracted considerable attention because of its diverse pharmacological activities. In this review, the chemical properties, plant sources, pharmacological activities, pharmacokinetic and toxicological characteristics of THP were systematically summarized for the first time. The results indicated that THP mainly existed in Papaveraceae and Menispermaceae families. Its pharmacological activities include anti-addiction, anti-inflammatory, analgesic, neuroprotective, and antitumor effects. Pharmacokinetic studies showed that THP was inadequately absorbed in the intestine and had rapid clearance and low bioavailability in vivo, as well as self-microemulsifying drug delivery systems, which could increase the absorption level and absorption rate of THP and improve its bioavailability. In addition, THP may have potential cardiac and neurological toxicity, but toxicity studies of THP are limited, especially its long-duration and acute toxicity tests. In summary, THP, as a natural alkaloid, has application prospects and potential development value, which is promising to be a novel drug for the treatment of pain, inflammation, and other related diseases. Further research on its potential target, molecular mechanism, toxicity, and oral utilization should need to be strengthened in the future.
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Affiliation(s)
- Qinyun Du
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xianli Meng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China.,State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shaohui Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Chang F, Jia F, Lv R, Guan M, Jia Q, Sun Y, Li Z. Effects of American Ginseng Cultivation on Bacterial Community Structure and Responses of Soil Nutrients in Different Ecological Niches. J Microbiol Biotechnol 2022; 32:419-429. [PMID: 35283425 PMCID: PMC9628796 DOI: 10.4014/jmb.2202.02003] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 02/20/2022] [Accepted: 02/21/2022] [Indexed: 12/15/2022]
Abstract
American ginseng (Panax quinquefolium L.) is a perennial herbaceous plant widely cultivated in China, Korea, the United States, and Japan due to its multifunctional properties. In northwest China, transplanting after 2-3 years has become the main mode of artificial cultivation of American ginseng. However, the effects of the cultivation process on the chemical properties of the soil and bacterial community remain poorly understood. Hence, in the present study, high-throughput sequencing and soil chemical analyses were applied to investigate the differences between bacterial communities and nutrition driver factors in the soil during the cultivation of American ginseng. The responses of soil nutrition in different ecological niches were also determined with the results indicating that the cultivation of American ginseng significantly increased the soluble nutrients in the soil. Moreover, the bacterial diversity fluctuated with cultivation years, and 4-year-old ginseng roots had low bacterial diversity and evenness. In the first two years of cultivation, the bacterial community was more sensitive to soil nutrition compared to the last two years. Proteobacteria, Actinobacteria, Gemmatimonadetes, Acidobacteria, Firmicutes, and Bacteroidetes dominated the bacterial community regardless of the cultivation year and ecological niche. With the increase of cultivation years, the assembly of bacterial communities changed from stochastic to deterministic processes. The high abundance of Sphingobium, Novosphingobium, and Rhizorhabdus enriched in 4-years-old ginseng roots was mainly associated with variations in the available potassium (AK), total phosphorus (TP), total potassium (TK), and organic matter (OM).
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Affiliation(s)
- Fan Chang
- College of Life Science, Shaanxi Normal University, Xi’an 710062, P.R. China,Shaanxi Institute of Microbiology, Xi’an 710043, P.R. China
| | - Fengan Jia
- Shaanxi Institute of Microbiology, Xi’an 710043, P.R. China
| | - Rui Lv
- Shaanxi Institute of Microbiology, Xi’an 710043, P.R. China
| | - Min Guan
- Shaanxi Agricultural Machinery Research Institute, Xianyang 712000, P.R. China
| | - Qingan Jia
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an 710072, P.R. China
| | - Yan Sun
- College of Life Science, Shaanxi Normal University, Xi’an 710062, P.R. China,Corresponding authors Y. Sun Phone: +8615353554537 E-mail:
| | - Zhi Li
- College of Life Science, Shaanxi Normal University, Xi’an 710062, P.R. China,
Z. Li Phone: +8613572900787 E-mail:
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Valverde JC, Araya M, Arias-Aguilar D, Masís C, Muñoz F. Evaluation of the Optimal Uses of Five Genotypes of Musa textilis Fiber Grown in the Tropical Region. Polymers (Basel) 2022; 14:1772. [PMID: 35566940 DOI: 10.3390/polym14091772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/13/2022] [Accepted: 04/19/2022] [Indexed: 02/05/2023] Open
Abstract
Knowing the genotypes of Musa textilis and its fiber production properties is key for developing cultivars with homogeneous properties and focusing on specific products or market segments that generate added value to the fiber. For this reason, the objective was to determine the optimal use of five genotypes of M. textilis (MT01, MT03, MT07, MT11, and CF01) with high productivity grown in the tropical region of Costa Rica. Therefore, anatomical, physical-mechanical, chemical, and energetic analyses were carried out on these fibers to define whether any genotype has the ideal conditions for a specific use. The results showed differences between the genotypes, obtaining significant differences in physical-mechanical properties (tension, water retention, and color), chemical properties (holocellulose, lignin, extractives, and elemental values of nitrogen, carbon, and sulfur), and energetic properties (volatiles, ash, and caloric value thermogravimetric analyses), which resulted in the establishment of two groups of genotypes with a dissimilarity degree of 35%. The first group, composed of MT03 and MT01, presented characteristics suitable for paper production, biodegradable materials, and composite materials. On the other hand, the second group, made up of MT07, MT11, and CF01, showed properties suitable for textiles, heavy-duty fibers, and bioenergy.
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Gómez-Rodríguez C, García-Quiñonez LV, Aguilar-Martínez JA, Castillo-Rodríguez GA, Rodríguez-Castellanos EA, López-Perales JF, Mendivil-Palma MI, Verdeja LF, Fernández-González D. MgO-ZrO 2 Ceramic Composites for Silicomanganese Production. Materials (Basel) 2022; 15:2421. [PMID: 35407755 DOI: 10.3390/ma15072421] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 12/10/2022]
Abstract
The deterioration of the refractory lining represents a significant problem for the smooth operation in the ferroalloys industry, particularly in the production of silicomanganese, due to the periodic requirements of substitution of the damaged refractory. Within this context, magnesia refractories are commonly employed in the critical zones of the furnaces used in silicomanganese production since the slag involved in the process has a basic character. The behavior of MgO–ZrO2 ceramic composites with different ZrO2 nanoparticles (0, 1, 3, and 5 wt.%) contents in the presence of silicomanganese slags is proposed in this manuscript. XPS, XRD and SEM–EDX were used to evaluate the properties of the ceramic composite against the silicomanganese slag. The static corrosion test was used to evaluate the corrosion of the refractory. Results suggest that corrosion is controlled by the change in slag viscosity due to the reaction between CaZrO3 and the melted slag. Besides, ZrO2 nanoparticles located at both triple points and grain boundaries act as a barrier for the slag advance within the refractory. The utilization of MgO refractories with ZrO2 nanoparticles can extend the life of furnaces used to produce silicomanganese.
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Ambroziak A, Haustein E. Properties of Old Concrete Built in the Former Leipziger Palace. Materials (Basel) 2022; 15:673. [PMID: 35057390 DOI: 10.3390/ma15020673] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/13/2022] [Accepted: 01/15/2022] [Indexed: 02/04/2023]
Abstract
This research aims to determine the mechanical, chemical, and physical properties of old concrete used in the former Leipziger Palace in Wrocław, Poland. The cylindrical specimens were taken from the basement concrete walls using a concrete core borehole diamond drill machine. The determination of the durability and strength of old concrete was based on specified chosen properties of the old concrete obtained through the following set of tests: measurements of dry density, tests of water absorption, specification of concrete compressive strength and frost resistance, determination of the modulus of elasticity, measurement of the pH value, determination of water-soluble chloride salts and sulphate ions, and X-ray diffraction analyses. Large dispersions of the compressive strength (10.4 MPa to 34.2 MPa), density (2049 kg/m3 to 2205 kg/m3), water absorption (4.72% to 6.55%), and stabilized secant modulus of elasticity (15.25 Gpa to 19.96 GPa) were observed. The paper is intended to provide scientists, civil engineers, and designers with guidelines for examining and assessing the long-term durability of old concrete, and also extending knowledge in the field of archaeological restoration and the protection of old concrete structures.
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Zhang S, Liu B, Yan G, Wu H, Han Y, Cui H. Chemical properties and anti-fatigue effect of polysaccharide from Pholiota nameko. J Food Biochem 2021; 46:e14015. [PMID: 34821398 DOI: 10.1111/jfbc.14015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 04/09/2021] [Revised: 10/10/2021] [Accepted: 10/18/2021] [Indexed: 11/27/2022]
Abstract
The aim of this study was to explore the primary chemical properties and anti-fatigue effect in vivo of Pholiota nameko polysaccharide (PNP). Through UV-visible spectrum, the absorption peaks of proteins, nucleic acids and pigments were not found. The organic functional groups of polysaccharides (3,289.97, 1,584.72, and 1,045.23 cm-1 so on) were measured by IR spectroscopy. The PNP was a semi-crystalline or non-crystalline substance, possessed a three-dimensional lump structure with a smooth, dense surface and amorphous structure according to the scanning electron microscopy and XRD images. Moreover, the PNP was chain or bright-spot structures formed by the entanglement of multiple polysaccharide fibers on the basis of atomic force microscopy. The results of anti-fatigue suggested the PNP could significantly extend the forced swim time from 121.58 ± 18.48 and 101.91 ± 14.27 min to 154.95 ± 24.26 and 134.13 ± 25.71 min in male and female mice respectively. The LDH activity was up to 31.68 ± 4.60 U/ml in male mice and 29.49 ± 5.12 U/ml in female mice. Meanwhile, the Ca2+ -Mg2+ -ATPase activity was reached to 2.49 ± 0.41 μmol/(mg·h) in male mice and 2.44 ± 0.29 μmol/(mg·h) in female mice. The SOD activity was increased to 5.92 ± 1.19 U/ml in male mice and 5.89 ± 0.98 U/ml in female mice, while the MDA content was decreased to 2.24 ± 0.34 nmol/mg in male mice and 2.02 ± 0.41 nmol/mg in female mice. These results showed a theoretical basis for application of the PNP in food and pharmacy as a natural physical strengthening substance. PRACTICAL APPLICATIONS: Fatigue affects physical and mental health in vivo, which resulted in negative effects on everyday tasks, leisure activities, cognitive and behavioral performances and is very common in modern life. Therefore, this study was designed to explore the primary chemical properties and research the anti-fatigue effects of Pholiota nameko polysaccharide (PNP) in mice. And then, it would be a reference for the development and utilization of PNP as a kind of healthy food on sub-health.
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Affiliation(s)
- Sisheng Zhang
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
| | - Bo Liu
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
| | - Guoyue Yan
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
| | - Han Wu
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
| | - Yaochen Han
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China
| | - Hongxia Cui
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, China.,Hebei Province Key Laboratory of Applied Chemistry, Qinhuangdao, China.,Hebei Province Key Laboratory of Nano-Biotechnology, Qinhuangdao, China
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Campi LB, Torres FFE, Rodrigues EM, Guerreiro-Tanomaru JM, Tanomaru-Filho M. Physicochemical and biological properties of new tricalcium silicate-based repair material doped with fluoride ions and zirconium oxide as radiopacifier. J Biomed Mater Res B Appl Biomater 2021; 110:862-870. [PMID: 34808030 DOI: 10.1002/jbm.b.34966] [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: 04/20/2021] [Revised: 10/15/2021] [Accepted: 10/29/2021] [Indexed: 01/08/2023]
Abstract
This study evaluated the physicochemical and biological properties of novel reparative materials composed of pure tricalcium silicate (Ca3 SiO5 ), Ca3 SiO5 doped with fluoride ions (Ca3 SiO5 -F) and their association with ZrO2 (Ca3 SiO5 + ZrO2 , Ca3 SiO5 -F + ZrO2 ), in comparison with Biodentine (BIO). Setting time radiopacity, pH, solubility, and dimensional change were evaluated based on ISO 6876 Standard. Volumetric change and flow/filling were assessed by microcomputed tomography (micro-CT). Biological properties were evaluated by the MTT assay 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide), Neutral Red (NR), cell migration, alkaline phosphatase activity (ALP), and Alizarin Red Staining (ARS) assays. Statistical analysis was performed by ANOVA, Tukey, or Bonferroni tests (α = .05). Ca3 SiO5 -F + ZrO2 had higher radiopacity, shorter setting time, and lower solubility and volumetric loss than BIO (p < .05). Ca3 SiO5 -F + ZrO2 had flow and filling capacity similar to BIO (p > .05). All the cements evaluated had an alkaline pH. Ca3 SiO5 -F + ZrO2 demonstrated cell viability similar to negative control (p > .05), increase in ALP activity in 7 days, mineralized nodule production in 21 days and repair capacity according to cell migration. In conclusion, Ca3 SiO5 -F + ZrO2 had adequate setting time, radiopacity, solubility, and dimensional change. This material presented low volumetric change besides flow and filling capacity in micro-CT assessment. In addition, Ca3 SiO5 -F + ZrO2 was biocompatible and bioactive, suggesting its use as reparative material.
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Affiliation(s)
- Lívia Bueno Campi
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | | | - Elisandra Márcia Rodrigues
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | | | - Mário Tanomaru-Filho
- Department of Restorative Dentistry, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
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Dong H, Fan S, Sun H, Chen C, Wang A, Jiang L, Ma D. Rhizosphere-Associated Microbiomes of Rice ( Oryza sativa L.) Under the Effect of Increased Nitrogen Fertilization. Front Microbiol 2021; 12:730506. [PMID: 34621256 PMCID: PMC8490883 DOI: 10.3389/fmicb.2021.730506] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
Crops assemble and rely on rhizosphere-associated microbiomes for plant nutrition, which is crucial to their productivity. Historically, excessive nitrogen fertilization did not result in continuously increasing yields but rather caused environmental issues. A comprehensive understanding should be developed regarding the ways in which crops shape rhizosphere-associated microbiomes under conditions of increased nitrogen fertilization. In this study, we applied 16S and 18S ribosomal RNA gene profiling to characterize bacterial and fungal communities in bulk and rhizosphere soil of rice subjected to three levels of nitrogen fertilization for 5 years. Soil biochemical properties were characterized, and carbon-, nitrogen-, and phosphorus-related soil enzyme activities were investigated, by assays. Increasing nitrogen fertilization led to a decreasing trend in the variation of microbial community structures and demonstrated a more definite influence on fungal rather than bacterial community compositions and functions. Changes in the level of nitrogen fertilization significantly affected chemical properties such as soil pH, nutrient content, and microbial biomass levels in both rhizosphere and bulk soil. Soil enzyme activity levels varied substantially across nitrogen fertilization intensities and correlated more with the fungal than with the bacterial community. Our results indicated that increased nitrogen input drives alterations in the structures and functions of microbial communities, properties of soil carbon, nitrogen, and phosphorus, as well as enzyme activities. These results provide novel insights into the associations among increased nitrogen input, changes in biochemical properties, and shifts in microbial communities in the rhizosphere of agriculturally intensive ecosystems.
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Affiliation(s)
- Hangyu Dong
- Key Laboratory of Northeast Rice Biology and Breeding, National Rice Regional Technology Innovation Center, Rice Research Institute, Shenyang Agricultural University, Shenyang, China.,College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Shuxiu Fan
- College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Haoyuan Sun
- Key Laboratory of Northeast Rice Biology and Breeding, National Rice Regional Technology Innovation Center, Rice Research Institute, Shenyang Agricultural University, Shenyang, China.,College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Conglin Chen
- Key Laboratory of Northeast Rice Biology and Breeding, National Rice Regional Technology Innovation Center, Rice Research Institute, Shenyang Agricultural University, Shenyang, China.,College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Aixin Wang
- Key Laboratory of Northeast Rice Biology and Breeding, National Rice Regional Technology Innovation Center, Rice Research Institute, Shenyang Agricultural University, Shenyang, China.,College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Linlin Jiang
- Key Laboratory of Northeast Rice Biology and Breeding, National Rice Regional Technology Innovation Center, Rice Research Institute, Shenyang Agricultural University, Shenyang, China.,College of Agronomy, Shenyang Agricultural University, Shenyang, China
| | - Dianrong Ma
- Key Laboratory of Northeast Rice Biology and Breeding, National Rice Regional Technology Innovation Center, Rice Research Institute, Shenyang Agricultural University, Shenyang, China.,College of Agronomy, Shenyang Agricultural University, Shenyang, China
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Zarei Jelyani A, Tavakoli J, Lashkari H, Aminlari M. Different effect of chemical refining process on Baneh ( Pistacia atlantica var mutica) kernel oil: Regeneration of tocopherols. Food Sci Nutr 2021; 9:5557-5566. [PMID: 34646525 PMCID: PMC8498077 DOI: 10.1002/fsn3.2515] [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: 06/30/2021] [Revised: 07/26/2021] [Accepted: 07/27/2021] [Indexed: 11/12/2022] Open
Abstract
The present study was conducted to investigate the impact of refining process on the chemical properties (fatty acid composition and tocopherols, sterols, and polyphenolic contents), qualitative parameters (peroxide value, acid value, and p-anisidine value), and antioxidant activity (DPPH radical scavenging assay and FRAP test) of Baneh (Pistacia atlantica var mutica) kernel oil. The results revealed that the refining process had no significant effect on the fatty acid composition. A major finding of this research was the increase in the tocopherol and sterol content up to the bleaching stage followed by their decrease in the deodorizing phase. Some tocopherol and sterol compounds in crude oil were dimerized or attached to other compounds by ester bonding, which are released during some stages of the refining process and this factor is responsible for their increase. In fact, during this process, these compounds are regenerated. The occurrence of this phenomenon in the refining process improved the DPPH radical scavenging power of Baneh kernel oil up to the bleaching stage. Moreover, the content of phenolic compounds decreased after refining of Baneh kernel oil, and only in the deodorizing stage, an increase of these compounds was observed. In general, the results of this study showed that the refining process had a completely different effect on the antioxidant compounds (especially tocopherols) compared to other oils.
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Affiliation(s)
- Aniseh Zarei Jelyani
- Food Science and Technology DepartmentSarvestan BranchIslamic Azad UniversitySarvestanIran
| | - Javad Tavakoli
- Department of Food Science and TechnologyFaculty of AgricultureJahrom UniversityJahromIran
| | - Hannan Lashkari
- Department of Food Science and TechnologyZarin Dasht BranchIslamic Azad UniversityZarin DashtIran
| | - Mahmoud Aminlari
- Department of BiochemistrySchool of Veterinary MedicineShiraz UniversityShirazIran
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Lesiak B, Trykowski G, Tóth J, Biniak S, Kövér L, Rangam N, Małolepszy A, Stobiński L. Effect of Microwave Treatment in a High Pressure Microwave Reactor on Graphene Oxide Reduction Process-TEM, XRD, Raman, IR and Surface Electron Spectroscopic Studies. Materials (Basel) 2021; 14:5728. [PMID: 34640126 DOI: 10.3390/ma14195728] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/21/2021] [Accepted: 09/25/2021] [Indexed: 12/28/2022]
Abstract
Reduced graphene oxide (rGO) was prepared by chemical reduction of graphene oxide (GO) (with a modified Hummers method) in aqueous solutions of hydrazine (N2H4), formaldehyde (CH2O), formic acid (HCO2H) accompanied by a microwave treatment at 250 °C (MWT) by a high pressure microwave reactor (HPMWR) at 55 bar. The substrates and received products were investigated by TEM, XRD, Raman and IR spectroscopies, XPS, XAES and REELS. MWT assisted reduction using different agents resulted in rGOs of a large number of vacancy defects, smaller than at GO surface C sp3 defects, oxygen groups and interstitial water, interlayer distance and diameter of stacking nanostructures (flakes). The average number of flake layers obtained from XRD and REELS was consistent, being the smallest for CH2O and then increasing for HCO2H and N2H4. The number of layers in rGOs increases with decreasing content of vacancy, C sp3 defects, oxygen groups, water and flake diameter. MWT conditions facilitate formation of vacancies and additional hydroxyl, carbonyl and carboxyl groups at these vacancies, provide no remarkable modification of flake diameter, what results in more competitive penetration of reducing agent between the interstitial sites than via vacancies. MWT reduction of GO using a weak reducing agent (CH2O) provided rGO of 8 layers thickness.
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Ramli NA, Md Yusof NFF, Zarkasi KZ, Suroto A. Chemical, Biological and Morphological Properties of Fine Particles during Local Rice Straw Burning Activities. Int J Environ Res Public Health 2021; 18:8192. [PMID: 34360485 DOI: 10.3390/ijerph18158192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2021] [Revised: 07/20/2021] [Accepted: 07/21/2021] [Indexed: 11/20/2022]
Abstract
Rice straw is commonly burned openly after harvesting in Malaysia and many other Asian countries where rice is the main crop. This operation emits a significant amount of air pollution, which can have severe consequences for indoor air quality, public health, and climate change. Therefore, this study focuses on determining the compositions of trace elements and the morphological properties of fine particles. Furthermore, the species of bacteria found in bioaerosol from rice burning activities were discovered in this study. For morphological observation of fine particles, FESEM-EDX was used in this study. Two main categories of particles were found, which were natural particles and anthropogenic particles. The zinc element was found during the morphological observation and was assumed to come from the fertilizer used by the farmers. ICP-OES identifies the concentration of trace elements in the fine particle samples. A cultured method was used in this study by using nutrient agar. From this study, several bacteria were identified: Exiguobavterium indicum, Bacillus amyloliquefaciens, Desulfonema limicola str. Jadabusan, Exiguobacterium acetylicum, Lysinibacillus macrolides, and Bacillus proteolyticus. This study is important, especially for human health, and further research on the biological composition of aerosols should be conducted to understand the effect of microorganisms on human health.
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Grijó DR, Olivo JE, da Motta Lima OC. Simple chemical tests to identify Cannabis derivatives: Redefinition of parameters and analysis of concepts. J Forensic Sci 2021; 66:1647-1657. [PMID: 34142715 DOI: 10.1111/1556-4029.14777] [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: 02/22/2021] [Revised: 04/25/2021] [Accepted: 05/19/2021] [Indexed: 02/03/2023]
Abstract
The chemical identification of Cannabis is commonly carried out using the Duquenois-Levine (DL) colorimetric test. On the other hand, its active substances called cannabinoids are differentiated by thin-layer chromatography (TLC). This work aims to optimize parameters of these two chemical tests using different samples of Cannabis in natura and previously heated (decarboxylated), as well as their isolated bioactive and possible false positives. The efficiency of the DL test without using ether and aliphatic aldehyde was evaluated, comparing the removal or not of the solid sample from the reaction medium after applying different concentrations of the vanillin ethanolic solution. The chemical properties of different cannabinoids and solvents were estimated and correlated with the TLC retention factors. DL tests applied directly to the plant matrix did not show the expected color, even using a high concentration of vanillin. However, obtaining ethanolic extracts from the samples using low vanillin concentration was sufficient without detecting false positives described in the literature. Cannabinoids with high dipole moment ( μ ) were poorly eluted in TLC, indicating a great interaction with the stationary phase. Their identifications could be conducted based on their distinct lipophilic characteristics ( log P OW ) and the choice of a more polar solvent mix ( μ mix ). It is concluded that the DL test can be conducted with reagents of less toxicity, but it is necessary to remove the plant matrix from the reaction medium. The correlation of the TLC results with the chemical properties of cannabinoids and solvents was consistent and can be extrapolated for more complex analyses.
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Affiliation(s)
- Daniel Ribeiro Grijó
- Graduate Program in Chemical Engineering, Department of Chemical Engineering, State University of Maringa, Maringa, Brazil
| | - José Eduardo Olivo
- Graduate Program in Chemical Engineering, Department of Chemical Engineering, State University of Maringa, Maringa, Brazil
| | - Oswaldo Curty da Motta Lima
- Graduate Program in Chemical Engineering, Department of Chemical Engineering, State University of Maringa, Maringa, Brazil
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Tsukamoto M, Nakamura T, Kimura H, Nakayama H. Synthesis and application of trifluoromethylpyridines as a key structural motif in active agrochemical and pharmaceutical ingredients. J Pestic Sci 2021; 46:125-142. [PMID: 34135675 PMCID: PMC8175224 DOI: 10.1584/jpestics.d21-012] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Herein, we provide a brief overview of the synthesis and applications of trifluoromethylpyridine (TFMP) and its derivatives in the agrochemical and pharmaceutical industries. Currently, the major use of TFMP derivatives is in the protection of crops from pests. Fluazifop-butyl was the first TFMP derivative introduced to the agrochemical market, and since then, more than 20 new TFMP-containing agrochemicals have acquired ISO common names. Several TFMP derivatives are also used in the pharmaceutical and veterinary industries; five pharmaceutical and two veterinary products containing the TFMP moiety have been granted market approval, and many candidates are currently undergoing clinical trials. The biological activities of TFMP derivatives are thought to be due to the combination of the unique physicochemical properties of the fluorine atom and the unique characteristics of the pyridine moiety. It is expected that many novel applications of TFMP will be discovered in the future.
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Affiliation(s)
- Masamitsu Tsukamoto
- Bioscience Business Headquarters, Ishihara Sangyo Kaisha, Ltd., 1–3–15 Edobori, Nishi-ku, Osaka 550–0002, Japan
- To whom correspondence should be addressed. E-mail:
| | - Tadashi Nakamura
- Bioscience Business Headquarters, Ishihara Sangyo Kaisha, Ltd., 1–3–15 Edobori, Nishi-ku, Osaka 550–0002, Japan
| | - Hirohiko Kimura
- Central Research Institute, Ishihara Sangyo Kaisha, Ltd., 2–3–1 Nishi-shibukawa, Kusatsu, Shiga 525–0025, Japan
| | - Hitoshi Nakayama
- Healthcare Business Development Headquarters, Ishihara Sangyo Kaisha, Ltd., 1–3–15 Edobori, Nishi-ku, Osaka 550–0002, Japan
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Abstract
Mycobacteria have unique cell envelopes, surface properties, and growth dynamics, which all play a part in the ability of these important pathogens to infect, evade host immunity, disseminate, and resist antibiotic challenges. Recent atomic force microscopy (AFM) studies have brought new insights into the nanometer-scale ultrastructural, adhesive, and mechanical properties of mycobacteria. The molecular forces with which mycobacterial adhesins bind to host factors, like heparin and fibronectin, and the hydrophobic properties of the mycomembrane have been unraveled by AFM force spectroscopy studies. Real-time correlative AFM and fluorescence imaging have delineated a complex interplay between surface ultrastructure, tensile stresses within the cell envelope, and cellular processes leading to division. The unique capabilities of AFM, which include subdiffraction-limit topographic imaging and piconewton force sensitivity, have great potential to resolve important questions that remain unanswered on the molecular interactions, surface properties, and growth dynamics of this important class of pathogens.
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Bani-Salameh AA, Ahmad AA, Alsaad AM, Qattan IA, Aljarrah IA. Synthesis, Optical, Chemical and Thermal Characterizations of PMMA-PS/CeO 2 Nanoparticles Thin Film. Polymers (Basel) 2021; 13:1158. [PMID: 33916630 PMCID: PMC8038548 DOI: 10.3390/polym13071158] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/16/2021] [Accepted: 03/25/2021] [Indexed: 11/17/2022] Open
Abstract
We report the synthesis of hybrid thin films based on polymethyl methacrylate) (PMMA) and polystyrene (PS) doped with 1%, 3%, 5%, and 7% of cerium dioxide nanoparticles (CeO2 NPs). The As-prepared thin films of (PMMA-PS) incorporated with CeO2 NPs are deposited on a glass substrate. The transmittance T% (λ) and reflectance R% (λ) of PMMA-PS/CeO2 NPs thin films are measured at room temperature in the spectral range (250-700) nm. High transmittance of 87% is observed in the low-energy regions. However, transmittance decreases sharply to a vanishing value in the high-energy region. In addition, as the CeO2 NPs concentration is increased, a red shift of the absorption edge is clearly observed suggesting a considerable decrease in the band gap energy of PMMA-PS/CeO2 NPs thin film. The optical constants (n and k) and related key optical and optoelectronic parameters of PMMA-PS/Ce NPs thin films are reported and interpreted. Furthermore, Tauc and Urbach models are employed to elucidate optical behavior and calculate the band gaps of the as-synthesized nanocomposite thin films. The optical band gap energy of PMMA-PS thin film is found to be 4.03 eV. Optical band gap engineering is found to be possible upon introducing CeO2 NPs into PMMA-PS polymeric thin films as demonstrated clearly by the continuous decrease of optical band gap upon increasing CeO2 content. Fourier-transform infrared spectroscopy (FTIR) analysis is conducted to identify the major vibrational modes of the nanocomposite. The peak at 541.42 cm-1 is assigned to Ce-O and indicates the incorporation of CeO2 NPs into the copolymers matrices. There were drastic changes to the width and intensity of the vibrational bands of PMMA-PS upon addition of CeO2 NPs. To examine the chemical and thermal stability, thermogravimetric (TGA) thermograms are measured. We found that (PMMA-PVA)/CeO2 NPs nanocomposite thin films are thermally stable below 110 °C. Therefore, they could be key candidate materials for a wide range of scaled multifunctional smart optical and optoelectronic devices.
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Affiliation(s)
- Areen A. Bani-Salameh
- Department of Physical Sciences, Jordan University of Science & Technology, P.O. Box 3030, Irbid 22110, Jordan; (A.A.B.-S.); (A.A.A.); (I.A.A.)
| | - A. A. Ahmad
- Department of Physical Sciences, Jordan University of Science & Technology, P.O. Box 3030, Irbid 22110, Jordan; (A.A.B.-S.); (A.A.A.); (I.A.A.)
| | - A. M. Alsaad
- Department of Physical Sciences, Jordan University of Science & Technology, P.O. Box 3030, Irbid 22110, Jordan; (A.A.B.-S.); (A.A.A.); (I.A.A.)
| | - I. A. Qattan
- Department of Physics, Khalifa University of Science and Technology, Abu Dhabi P.O. Box 127788, United Arab Emirates;
| | - Ihsan A. Aljarrah
- Department of Physical Sciences, Jordan University of Science & Technology, P.O. Box 3030, Irbid 22110, Jordan; (A.A.B.-S.); (A.A.A.); (I.A.A.)
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Mariaková D, Anna Mocová K, Fořtová K, Ryparová P, Pešta J, Pavlů T. Ecotoxicity and Essential Properties of Fine-Recycled Aggregate. Materials (Basel) 2021; 14:463. [PMID: 33477911 DOI: 10.3390/ma14020463] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 12/29/2020] [Accepted: 01/13/2021] [Indexed: 12/03/2022]
Abstract
This article deals with the possibility of utilization of secondary-raw materials as a natural sand replacement in concrete. Four types of waste construction materials were examined—recycled aggregate from four different sources. The natural aggregate was examined as well as used as the reference sample. All the samples were tested to evaluate the water absorption, particle size distribution, and particle density. The basic chemical reactions in the view of ecotoxicology are investigated and measured based on Czech standards. Chemical analysis, Lemna growth inhibition test, freshwater algae, daphnia acute, and mustard germination toxicity test were made and discussed in this paper. Based on the physical and geometrical properties and ecotoxicology of examined waste materials, this work evaluated them as suitable for utilization in concrete as a sand replacement.
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Abstract
The chemical elements are the "conserved principles" or "kernels" of chemistry that are retained when substances are altered. Comprehensive overviews of the chemistry of the elements and their compounds are needed in chemical science. To this end, a graphical display of the chemical properties of the elements, in the form of a Periodic Table, is the helpful tool. Such tables have been designed with the aim of either classifying real chemical substances or emphasizing formal and aesthetic concepts. Simplified, artistic, or economic tables are relevant to educational and cultural fields, while practicing chemists profit more from "chemical tables of chemical elements." Such tables should incorporate four aspects: (i) typical valence electron configurations of bonded atoms in chemical compounds (instead of the common but chemically atypical ground states of free atoms in physical vacuum); (ii) at least three basic chemical properties (valence number, size, and energy of the valence shells), their joint variation across the elements showing principal and secondary periodicity; (iii) elements in which the (sp)8, (d)10, and (f)14 valence shells become closed and inert under ambient chemical conditions, thereby determining the "fix-points" of chemical periodicity; (iv) peculiar elements at the top and at the bottom of the Periodic Table. While it is essential that Periodic Tables display important trends in element chemistry we need to keep our eyes open for unexpected chemical behavior in ambient, near ambient, or unusual conditions. The combination of experimental data and theoretical insight supports a more nuanced understanding of complex periodic trends and non-periodic phenomena.
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Affiliation(s)
- Changsu Cao
- Department of Chemistry, Tsinghua University, Beijing, China
| | | | - W. H. Eugen Schwarz
- Department of Chemistry, Tsinghua University, Beijing, China
- Department of Chemistry, University of Siegen, Siegen, Germany
| | - Jun Li
- Department of Chemistry, Tsinghua University, Beijing, China
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
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Zhang Y, Jin T, Ryu G, Gao Y. Effects of screw configuration on chemical properties and ginsenosides content of extruded ginseng. Food Sci Nutr 2021; 9:251-260. [PMID: 33473289 PMCID: PMC7802574 DOI: 10.1002/fsn3.1991] [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: 03/26/2020] [Revised: 10/21/2020] [Accepted: 10/21/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The purpose of this study was to investigate the effects of screw configuration on chemical properties and ginsenosides content of extruded ginseng and to select the most suitable screw configuration for the processing of ginseng. METHOD The extrusion conditions were set as follows: moisture content (20%), barrel temperature (140°C), screw speed (200 rpm), and feeding rate (100 g/min). RESULT The extruded ginseng of screw configuration 6 has the highest DPPH free radical scavenging rate, reducing power and total phenol, which is the most suitable configuration for the development of ginseng extract products. In addition, the extruded ginseng of screw configuration 9 has the highest content of total saponin, and the content of rare ginsenoside Rg3 which is scarcely present in the ginseng raw material powder was significantly increased. This intended that twin-screw extrusion process enables the mutual conversion between ginsenosides and rare ginsenoside Rg3 had achieved. CONCLUSION The extrusion process promotes the development and utilization of ginseng and provides theoretical basis for the design and development of screw configuration of twin-screw extruded ginseng.
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Affiliation(s)
- Yu Zhang
- Department of Food Science and EngineeringYanbian UniversityYanbianChina
| | - Tie Jin
- Department of Food Science and EngineeringYanbian UniversityYanbianChina
| | - Gihyung Ryu
- Department of Food Science and TechnologyKongju National UniversityYesanSouth Korea
| | - Yuxuan Gao
- Department of Food Science and EngineeringYanbian UniversityYanbianChina
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Ambroziak A, Haustein E, Niedostatkiewicz M. Chemical, Physical, and Mechanical Properties of 95-Year-Old Concrete Built-In Arch Bridge. Materials (Basel) 2020; 14:E20. [PMID: 33374565 DOI: 10.3390/ma14010020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 11/17/2022]
Abstract
This research aimed to determine the durability and strength of an old concrete built-in arch bridge based on selected mechanical, physical, and chemical properties of the concrete. The bridge was erected in 1925 and is located in Jagodnik (northern Poland). Cylindrical specimens were taken from the side ribs connected to the top plate using a concrete core borehole diamond drill machine. The properties of the old concrete were compared with the present and previous standard requirements and guidelines. The laboratory testing program consisted of the following set of tests: measurements of the depth of carbonated zone and dry density, water absorption tests, determination of concrete compressive strength and frost resistance, determination of modulus of elasticity, measurement of the pH value, determination of water-soluble chloride salt and sulfate ion content, and X-ray diffraction analyses. Large variations in the cylindrical compressive strength (14.9 to 22.0 MPa), modulus of elasticity (17,900 to 26,483 MPa), density (2064 to 2231 kg/m3), and water absorption (3.88 to 6.58%) were observed. In addition to the experiments, a brief literature survey relating to old concrete properties was also conducted. This paper can provide scientists, engineers, and designers an experimental basis in the field of old concrete built-in bridge construction.
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José N, Ahmed H, Miguel B, Luís E, Jorge B. Magnesia (MgO) Production and Characterization, and Its Influence on the Performance of Cementitious Materials: A Review. Materials (Basel) 2020; 13:E4752. [PMID: 33114265 DOI: 10.3390/ma13214752] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/12/2020] [Accepted: 10/20/2020] [Indexed: 11/16/2022]
Abstract
This paper presents a literature review concerning the characteristics of MgO (magnesium oxide or magnesia) and its application in cementitious materials. It starts with the characterization of MgO in terms of production processes, calcination temperatures, reactivity, and physical properties. Relationships between different MgO characteristics are established. Then, the influence of MgO incorporation on the properties of cementitious materials is investigated. The mechanical strength and durability behaviour of cement pastes, mortars and concrete mixes made with MgO are discussed. The studied properties of MgO-cement mixes include compressive strength, flexural strength, tensile strength, modulus of elasticity, water absorption, porosity, carbonation, chloride ion penetration, shrinkage, expansion, and hydration degree. In addition, microscopic analyses of MgO-cement mixes are also assessed. Summarizing the results of different studies, it is concluded that MgO incorporation in cementitious materials generally decreases the mechanical strength and shrinkage, and increases the porosity, expansion, carbonation and chloride ion migration. However, it should be emphasized that the properties of the specific MgO used (mainly the calcination temperature, the reactivity and the surface area) have a significant influence on the characteristics of the cementitious materials produced.
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Abstract
This research work was undertaken to evaluate the physicochemical parameters of oil from the cherry kernel non-irradiated and irradiated at 3 and 6 kGy of gamma irradiation for two storage periods (0 and 12 months). The acid value, peroxide value, thiobarbituric acid reactive substances value, iodine value, saponification value refractive index (peroxide value), and the color parameters of cherry kernel oils were determined. The results indicated that the extracted cherry kernel oils were liquid at room temperature with color varying from light yellow to deep red. The physicochemical properties of cherry kernel oils including acid value, peroxide value, thiobarbituric acid reactive substances, iodine value, saponification value, and refractive index values were 1.19 mg KOH g-1, 9.01 meq2 kg-1, 0.014 mg MDA kg-1, 99.48 KOH g-1 I2 100 g-1, 194.50 mg KOH g-1, and 1.472, respectively. Generally, gamma irradiation doses and storage time increased acid value, peroxide value, thiobarbituric acid reactive substances, and refractive index value of cherry kernel oils, whereas no significant (p > 0.05) change due to irradiation was recorded in iodine value, saponification value, and in color parameter (L*, a*, b*, and ΔE values) of cherry kernel oils. However, the properties of cherry kernel oils revealed that the cherry kernel is a good source of oil which could be used for industrial purposes.
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Affiliation(s)
- M Al-Bachir
- Department of Radiation Technology, Atomic Energy Commission of Syria, Damascus, Syria
| | - Y Koudsi
- Faculty of Science, Damascus University, Damascus, Syria
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Datta-Mannan A, Estwick S, Zhou C, Choi H, Douglass NE, Witcher DR, Lu J, Beidler C, Millican R. Influence of physio chemical properties on the subcutaneous absorption and bioavailability of monoclonal antibodies. MAbs 2020; 12:1770028. [PMID: 32486889 PMCID: PMC7531508 DOI: 10.1080/19420862.2020.1770028] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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] [Indexed: 01/19/2023] Open
Abstract
Many therapeutic monoclonal antibodies (mAbs) were initially developed for intravenous (IV) administration. As a means to improve mAb drug-ability and the patient experience, subcutaneous (SC) administration is an increasingly important delivery route for mAbs. Unlike IV administration, bioavailability limitations for antibodies have been reported following SC injection and can dictate whether a mAb is administered via this parenteral route. The SC bioavailability of antibodies has been difficult to predict, and it can be variable and partial, with values ranging from ~50% to 100%. The mechanisms leading to the incomplete bioavailability of some mAbs relative to others are not well understood. There are some limited data that suggest the physiochemical properties inherent to a mAb can contribute to its SC absorption, bioavailability, and in vivo fate. In this study, we evaluated the integrated influence of multiple mAb physiochemical factors on the SC absorption and bioavailability of six humanized mAbs in both rats and cynomolgus monkeys. We demonstrate the physiochemical properties of mAbs are critical to their rate and extent of SC absorption. The combination of high positive charge and hydrophobic interaction significantly reduced the rate of the evaluated mAb’s SC absorption and bioavailability. Reduction or balancing of both these attributes via re-engineering the mAbs restored desirable properties of the molecules assessed. This included reduced association with SC tissue, improvements in mAb absorption from the SC space and overall SC bioavailability. Our findings point to the importance of evaluating the relative balance between various physiochemical factors, including charge, hydrophobicity, and stability, to improve the SC drug-ability of mAbs for selecting or engineering mAbs with enhanced in vivo absorption and bioavailability following SC administration.
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Affiliation(s)
- Amita Datta-Mannan
- Departments of Exploratory Medicine and Pharmacology, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
| | - Selina Estwick
- External Innovation, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
| | | | - Hiuwan Choi
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
| | - Nicole E Douglass
- Clinical Design/Delivery/Analytics, Lilly Research Laboratories Lilly Corporate Center , Indianapolis, IN, USA
| | - Derrick R Witcher
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
| | - Jirong Lu
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
| | - Catherine Beidler
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
| | - Rohn Millican
- Biotechnology Discovery Research, Lilly Research Laboratories, Lilly Corporate Center , Indianapolis, IN, USA
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Zhang B, Jin X, Yin H, Zhang D, Zhou H, Zhang X, Tran LP. Natural Products, Traditional Uses and Pharmacological Activities of the Genus Biebersteinia (Biebersteiniaceae). Plants (Basel) 2020; 9:E595. [PMID: 32392890 DOI: 10.3390/plants9050595] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 04/25/2020] [Accepted: 04/28/2020] [Indexed: 12/24/2022]
Abstract
Medicinal plants have been known as a rich source of natural products (NPs). Due to their diverse chemical structures and remarkable pharmacological activities, NPs are regarded as important repertoires for drug discovery and development. Biebersteinia plant species belong to the Biebersteiniaceae family, and have been used in folk medicines in China and Iran for ages. However, the chemical properties, bioactivities and modes of action of the NPs produced by medicinal Biebersteinia species are poorly understood despite the fact that there are only four known Biebersteinia species worldwide. Here, we reviewed the chemical classifications and diversity of the various NPs found in the four known Biebersteinia species. We found that the major chemical categories in these plants include flavonoids, alkaloids, phenylpropanoids, terpenoids, essential oils and fatty acids. We also discussed the anti-inflammatory, analgesic, antibacterial, antioxidant, antihypertensive and hypoglycemic effects of the four Biebersteinia species. We believe that the present review will facilitate the exploration of traditional uses and pharmacological properties of Biebersteinia species, extraction of the NPs and elucidation of their molecular mechanisms, as well as the development of novel drugs based on the reported properties and mode-of-action.
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Çetinkaya A, Öz F. The effect of wheat germ on the chemical properties and fatty acids of white cheese during the storage time. Food Sci Nutr 2020; 8:915-920. [PMID: 32148800 PMCID: PMC7020286 DOI: 10.1002/fsn3.1370] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 10/16/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 11/25/2022] Open
Abstract
In the present study, it was aimed to support the white cheese structure produced from cow's milk by adding wheat germ and to determine the changes in fatty acids and chemical composition of this additive storage time. The samples were taken on the 1st, 15th, and 30th days of storage, and some chemical properties and fatty acids were analyzed. The use of wheat germ in the production of white cheese had a significant effect (p < .05) on the fat, protein, salt, total acidity (% l.a) and dry matter properties of the cheese. It was determined that the most common fatty acids in the cheese samples were palmitic, oleic, stearic, and myristic acids. Wheat germ is a significant source due to its high protein content. Therefore, it can be expressed as an auxiliary raw material for the development of nutritional and functional properties in cheese production.
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Affiliation(s)
- Asya Çetinkaya
- Department of Food EngineeringFaculty of Engineering ArchitectureKafkas UniversityKarsTurkey
| | - Fatih Öz
- Department of Food EngineeringFaculty of AgricultureAtatürk UniversityErzurumTurkey
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Salamanca E, Hsu CC, Yao WL, Choy CS, Pan YH, Teng NC, Chang WJ. Porcine Collagen-Bone Composite Induced Osteoblast Differentiation and Bone Regeneration In Vitro and In Vivo. Polymers (Basel) 2020; 12:polym12010093. [PMID: 31947902 PMCID: PMC7023633 DOI: 10.3390/polym12010093] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 11/22/2019] [Revised: 12/05/2019] [Accepted: 12/05/2019] [Indexed: 12/16/2022] Open
Abstract
Due to autogenous bone limitations, some substitute bone grafts were developed. Collagenated porcine graft (CPG) is able to regenerate new bone, although the number of studies is insufficient, highlighting the need for future studies to better understand the biomaterial. In order to understand better CPG′s possible dental guided bone regeneration indications, the aim of this work was to determine CPG′s biological capacity to induce osteoblast differentiation in vitro and guided bone regeneration in vivo, whilst being compared with commercial hydroxyapatite and beta tricalcium phosphate (HA/β-TCP) and porcine graft alone. Cell cytotoxicity (WST-1), alkaline phosphatase activity (ALP), and real-time polymerase chain reaction (qPCR) were assessed in vitro. Critical size defects of New Zealand white rabbits were used for the in vivo part, with critical size defect closures and histological analyses. WST-1 and ALP indicated that CPG directly stimulated a greater proliferation and confluency of cells with osteoblastic differentiation in vitro. Gene sequencing indicated stable bone formation markers, decreased resorption makers, and bone remodeling coupling factors, making the transition from osteoclast to osteoblast expression at the end of seven days. CPG resulted in the highest new bone regeneration by osteoconduction in critical size defects of rabbit calvaria at eight weeks. Nonetheless, all biomaterials achieved nearly complete calvaria defect closure. CPG was found to be osteoconductive, like porcine graft and HA/β-TCP, but with higher new bone formation in critical size defects of rabbit calvaria at eight weeks. CPG can be used for different dental guided bone regeneration procedures; however, further studies are necessary.
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Affiliation(s)
- Eisner Salamanca
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (E.S.); (C.C.H.); (Y.H.P.); (N.-C.T.)
| | - Chia Chen Hsu
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (E.S.); (C.C.H.); (Y.H.P.); (N.-C.T.)
- Dental Department, Taipei Medical University, Shuang-Ho hospital, Taipei 235, Taiwan
| | - Wan Ling Yao
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (E.S.); (C.C.H.); (Y.H.P.); (N.-C.T.)
- Correspondence: (W.L.Y.); (W.-J.C.); Tel.: +886-2-2736-1661 (ext. 5148) (W.-J.C.); Fax: +886-2-2736-2295 (W.-J.C.)
| | - Cheuk Sing Choy
- Department of Community Medicine, En Chu Kong Hospital, New Taipei City 237, Taiwan;
- Yuanpei University of Medical technology, Hsin Chu, Taipei 300, Taiwan
| | - Yu Hwa Pan
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (E.S.); (C.C.H.); (Y.H.P.); (N.-C.T.)
- Department of Dentistry, Chang Gung Memorial Hospital, Taipei 106, Taiwan
- Graduate Institute of Dental & Craniofacial Science, Chang Gung University, Taoyuan 333, Taiwan
- School of Dentistry, College of Medicine, China Medical University, Taichung 404, Taiwan
| | - Nai-Chia Teng
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (E.S.); (C.C.H.); (Y.H.P.); (N.-C.T.)
- Dental Department, Taipei Medical University Hospital, Taipei 110, Taiwan
| | - Wei-Jen Chang
- School of Dentistry, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan; (E.S.); (C.C.H.); (Y.H.P.); (N.-C.T.)
- Dental Department, Taipei Medical University, Shuang-Ho hospital, Taipei 235, Taiwan
- Correspondence: (W.L.Y.); (W.-J.C.); Tel.: +886-2-2736-1661 (ext. 5148) (W.-J.C.); Fax: +886-2-2736-2295 (W.-J.C.)
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Che K, Lyu P, Wan F, Ma M. Investigations on Aging Behavior and Mechanism of Polyurea Coating in Marine Atmosphere. Materials (Basel) 2019; 12:E3636. [PMID: 31694185 DOI: 10.3390/ma12213636] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/24/2019] [Accepted: 11/01/2019] [Indexed: 11/21/2022]
Abstract
In this investigation, the aging behaviors of polyurea coating exposed to marine atmosphere for 150 days were studied and the mechanism was analyzed. The influences on surface and mechanical properties, surface morphology, thermal stability behavior, as well as chemical changes evolution of the coating were investigated. By attenuated total reflectance fourier transform infrared spectroscopy (ATR–FTIR) and X-ray photoelectron spectroscopy (XPS), changes in the chemical properties of polyurea coatings before (PCB) and after 150 d (PCA) of aging were analyzed, and emphasis was given to the effect of aging on functional group change, the hydrogen bonding behavior, and phase separated morphology. The results displayed prominent chain scission during aging, such as N–H, C=O, and C–O–C and the hydrogen bonded urea carbonyl content showed a decrease trend. The relative content of soft and hard segments showed a significant change, which increased the degree of phase separation.
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Wu C, Chen Z, Hu Y, Rao Z, Wu W, Yang Z. Nanocrystals: The Preparation, Precise Control and Application Toward the Pharmaceutics and Food Industry. Curr Pharm Des 2019; 24:2425-2431. [PMID: 29766786 DOI: 10.2174/1381612824666180515124614] [Citation(s) in RCA: 10] [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: 04/02/2018] [Revised: 04/30/2018] [Accepted: 05/08/2018] [Indexed: 11/22/2022]
Abstract
Crystallization is a significant process employed to produce a wide variety of materials in pharmaceutical and food area. The control of crystal dimension, crystallinity, and shape is very important because they will affect the subsequent filtration, drying and grinding performance as well as the physical and chemical properties of the material. This review summarizes the special features of crystallization technology and the preparation methods of nanocrystals, and discusses analytical technology which is used to control crystal quality and performance. The crystallization technology applications in pharmaceutics and foods are also outlined. These illustrated examples further help us to gain a better understanding of the crystallization technology for pharmaceutics and foods.
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Affiliation(s)
- Cao Wu
- School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, Jiangsu, 211800, China.,College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Zhou Chen
- School of Mechanical and Power Engineering, Nanjing Tech University, Nanjing, Jiangsu, 211800, China.,Suzhou Yiheyongli New Energy Co., Ltd, Suzhou, Jiangsu, 215400, China
| | - Ya Hu
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Zhiyuan Rao
- College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, China
| | - Wangping Wu
- School of Mechanical Engineering, Changzhou University, Changzhou, 213164, China
| | - Zhaogang Yang
- Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, Ohio, 43210, United States
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Li WJ, Han C, Cheng G, Chou SL, Liu HK, Dou SX. Chemical Properties, Structural Properties, and Energy Storage Applications of Prussian Blue Analogues. Small 2019; 15:e1900470. [PMID: 30977287 DOI: 10.1002/smll.201900470] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 02/28/2019] [Indexed: 06/09/2023]
Abstract
Prussian blue analogues (PBAs, A2 T[M(CN)6 ], A = Li, K, Na; T = Fe, Co, Ni, Mn, Cu, etc.; M = Fe, Mn, Co, etc.) are a large family of materials with an open framework structure. In recent years, they have been intensively investigated as active materials in the field of energy conversion and storage, such as for alkaline-ion batteries (lithium-ion, LIBs; sodium-ion, NIB; and potassium-ion, KIBs), and as electrochemical catalysts. Nevertheless, few review papers have focused on the intrinsic chemical and structural properties of Prussian blue (PB) and its analogues. In this Review, a comprehensive insight into the PBAs in terms of their structural and chemical properties, and the effects of these properties on their materials synthesis and corresponding performance is provided.
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Affiliation(s)
- Wei-Jie Li
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Chao Han
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Gang Cheng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Xiongchu Avenue, Wuhan, 430073, P.R. China
| | - Shu-Lei Chou
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Hua-Kun Liu
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
| | - Shi-Xue Dou
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, NSW, 2522, Australia
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Kithiyon M, Pannerselvam B, Balasaubramaniyam Madhukumar SS, Sridharan J, Alagumuthu TS. Efficacy of mycosynthesised AgNPs from Earliella scabrosa as an in vitro antibacterial and wound healing agent. IET Nanobiotechnol 2019; 13:339-344. [PMID: 31053699 PMCID: PMC8676610 DOI: 10.1049/iet-nbt.2018.5237] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [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: 07/31/2018] [Revised: 11/17/2018] [Accepted: 11/28/2018] [Indexed: 01/25/2024] Open
Abstract
The silver nanoparticles (AgNPs) with their unique chemical and physical properties are proving as a new therapeutical agent. In the present study, the AgNPs synthesised from an aqueous extract of a macrofungus, Earliella scabrosa, were characterised by field emission scanning electron microscopy (FESEM), energy dispersive X-ray analysis (EDX), high-resolution transmission electron microscopy, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and further evaluate for its in vitro antibacterial and wound healing efficacy. The mycosynthesised AgNPs exhibited the surface plasmon resonance peak at 410 nm with good stability over a period of a month. The FESEM and EDX analyses revealed the spherical-shaped AgNPs of an average size of 20 nm and the presence of elemental Ag, respectively. The XRD pattern showed the crystalline nature of AgNPs. The FTIR spectra confirmed the conversion of Ag+ ions to AgNPs due to reduction by biomolecules of macrofungus extract. The mycosynthesised AgNPs showed effective antibacterial activity against two Gram-positive bacteria, namely Bacillus subtilis and Staphylococcus aureus, and two Gram-negative bacteria Escherichia coli and Pseudomonas aeruginosa. The pathogens were highly sensitive to AgNPs, whereas less sensitive to AgNO3. The mycosynthesised AgNPs showed significant wound healing potential with 68.58% of wound closure.
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Affiliation(s)
| | - Balashanmugam Pannerselvam
- Centre for Human & Organisational Resources Development (CHORD), Council of Scientific and Industrial Research - Central Leather Research Institute (CSIR-CLRI), Chennai 600020, Tamil Nadu, India.
| | | | | | - Tamil Selvi Alagumuthu
- Centre for Human & Organisational Resources Development (CHORD), Council of Scientific and Industrial Research - Central Leather Research Institute (CSIR-CLRI), Chennai 600020, Tamil Nadu, India
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Lee J, Kim DS, Cho J, Hong SJ, Pan JH, Kim JK, Shin EC. Perilla frutescens Britton: A Comprehensive Study on Flavor/Taste and Chemical Properties During the Roasting Process. Molecules 2019; 24:E1374. [PMID: 30965657 DOI: 10.3390/molecules24071374] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/02/2019] [Accepted: 04/08/2019] [Indexed: 11/30/2022] Open
Abstract
This study investigated changes of volatile compounds, sniffing test-assisted sensory properties, taste associated-constituent and free amino acid compositions, taste description by electronic-tongue, and chemical characteristics in Perilla frutescens Britton var. acuta Kudo after roasting at 150 °C for 0–8 min. A total of 142 volatile compounds were identified, among which methyl benzoate and limonene were predominant, regardless of roasting time, and these were also detected as the major compounds in the sniffing test by GC-olfactometry. For constituent amino acids analyzed by the acid hydrolysis method using hydrochloric acid (HCl), the concentration of glutamic acid, aspartic acid, and leucine showed an increase pattern with increased roasting time, which results in umami taste, sour taste, and bitter taste, respectively. For free amino acids, valine and hydroxylysine eliciting bitter and bitter and sweet tastes, respectively, also tend to increase by roasting. The pattern of amino acid concentration by roasting was readily matched to the taste description by electronic-tongue but that of sweetness and sourness by electronic-tongue did not coincide with the amino acid composition. For the chemical properties, total phenolic content, antioxidative capacity, and browning intensity tend to increase with roasting but decreased by 8 min. The results of this study provide fundamental information on perilla in both the food industry and cooking environment for the sake of increasing the utilization of perilla as a food source and ingredient.
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Ma X, Jin Z, Jin T. Effects of extrusion conditions on chemical properties of extruded white ginseng root hair. J Sci Food Agric 2019; 99:3186-3191. [PMID: 30548606 DOI: 10.1002/jsfa.9535] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 09/04/2018] [Revised: 11/20/2018] [Accepted: 12/08/2018] [Indexed: 05/26/2023]
Abstract
BACKGROUND This study was to investigate the significant effects of extrusion process variables on chemical properties of extruded white ginseng root hair. The extrusion conditions were set as follows: barrel temperature (110 and 140 °C), moisture content (20 and 30%) and screw speed (200 and 300 rpm). The powder of white ginseng root hair was extruded as L8 (27 ) orthogonal experimental design. RESULTS The crude saponin and acidic polysaccharide contents of extrudate were significantly higher than those of raw material after extrusion. In addition, antioxidant properties were also increased, while reducing sugar content was markedly lower than that of raw material. Moisture content was the most significant factor affecting the reducing sugar, acidic polysaccharide and total phenolic contents, and 2,2-diphenyl-1-picrylhydrazyl scavenging activity. Barrel temperature significantly affected reducing power, and screw speed significantly influenced crude saponin content. CONCLUSIONS The extrusion process aided in improving the amount of beneficial compounds from white ginseng root hair. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Xuelian Ma
- Department of Food Science and Technology, Kongju National University, Chungnam, Korea
| | - Zhezhi Jin
- Department of Statistics, Yanbian University, Yanbian, China
| | - Tie Jin
- Department of Food Science and Engineering, Yanbian University, Yanbian, China
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Cechalova B, Branecky M, Klapetek P, Cech V. Optical Properties of Oxidized Plasma-Polymerized Organosilicones and Their Correlation with Mechanical and Chemical Parameters. Materials (Basel) 2019; 12:ma12030539. [PMID: 30759719 PMCID: PMC6384779 DOI: 10.3390/ma12030539] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 01/31/2019] [Accepted: 02/06/2019] [Indexed: 11/22/2022]
Abstract
Pure tetravinylsilane and its oxygen mixture were used to deposit oxidized plasma polymer films at various effective power (0.1–10 W) and various oxygen fractions (0–0.71) using RF pulsed plasma. The optical properties (refractive index, extinction coefficient, band gap) of the deposited films were investigated by spectroscopic ellipsometry (230–830 nm) using an optical model and Tauc‒Lorentz parametrization. Analyses of chemical and mechanical properties of films allowed for the interpretation of changes in optical properties with deposition conditions. The refractive index was revealed to increase with enhanced effective power due to the increased crosslinking of the plasma polymer network but decreased when increasing the oxygen fraction due to the decrease of polymer crosslinking as the number of carbon bonds in the plasma polymer network was eliminated. A very strong positive correlation was found between the Young’s modulus and the refractive index for oxidized plasma polymer films. The optical properties of films correlated with their chemical properties for the specific deposition conditions used in this study. The band gap (1.9–2.9 eV) was assumed to be widened due to the increased concentration of vinyl groups in oxidized plasma polymer films.
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Affiliation(s)
- Bozena Cechalova
- CEITEC, Brno University of Technology, Purkynova 123, 612 00 Brno, Czech Republic.
| | - Martin Branecky
- Institute of Materials Chemistry, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic.
| | - Petr Klapetek
- Czech Metrology Institute, Okruzni 31, 638 00 Brno, Czech Republic.
| | - Vladimir Cech
- Institute of Materials Chemistry, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic.
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Eskelsen E, Catelan A, Hernades NMAP, Soares LES, Cavalcanti AN, Aguiar FHB, Liporoni PCS. Physicochemical changes in enamel submitted to pH cycling and bleaching treatment. Clin Cosmet Investig Dent 2018; 10:281-286. [PMID: 30588123 PMCID: PMC6296191 DOI: 10.2147/ccide.s184683] [Citation(s) in RCA: 10] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective The purpose of this study was to assess the hardness, mineral content, surface roughness, and micromorphology of sound and slightly demineralized enamels, before and after bleaching procedure using 10% carbamide peroxide. Methods Sixty bovine dental blocks were randomly divided into the following two groups: 30 slabs were submitted to three cycles of pH and 30 slabs were noncycled. Hardness (n=10) was measured using the microhardness tester with Knoop indenter under a 50 g load for 5 seconds. The calcium/phosphate (Ca/P) ratio (n=10) was obtained using a micro-energy-dispersive X-ray fluorescence (μ-EDXRF) spectrometer. The measurement of roughness average (n=10) was performed using a surface roughness tester. Specimens were bleached 6 hours/day during 21 days, and then, physicochemical properties were re-evaluated. Two additional specimens were carried out to evaluate surface micromorphology using the scanning electron microscopy. Data were statistically analyzed by ANOVA and Tukey's test (α=0.05). Results Sound and slightly demineralized enamels showed no difference in Ca/P ratio after dental bleaching according to the μ-EDXRF analysis, but the Ca/P ratio decreased after bleaching for slightly demineralized enamel. Bleaching treatment decreased the hardness and increased the surface roughness, causing micromorphology alterations. Conclusion Therefore, bleaching procedure promoted change in bovine enamel surface and increased the demineralization of slightly demineralized enamel but not affected the mineral content of sound enamel.
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Affiliation(s)
- Evania Eskelsen
- Department of Dentistry, University of Taubaté, Taubaté, São Paulo, Brazil,
| | - Anderson Catelan
- Department of Dentistry, University of Taubaté, Taubaté, São Paulo, Brazil,
| | | | - Luís Eduardo Silva Soares
- Laboratory of Biomedical Vibrational Spectroscopy, Research and Development Institute, University of Vale do Paraíba, São José dos Campos, São Paulo, Brazil
| | - Andrea Nóbrega Cavalcanti
- Department of Restorative Dentistry, School of Medicine and Public Health of Bahia and Federal University of Bahia, Salvador, Bahia, Brazil
| | - Flávio Henrique Baggio Aguiar
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil,
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