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Sznaider F, Rojas AM, Stortz CA, Navarro DA. Amidation of arabinoglucuronoxylans to modulate their flow behavior. Carbohydr Polym 2024; 336:122123. [PMID: 38670754 DOI: 10.1016/j.carbpol.2024.122123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 03/22/2024] [Accepted: 04/01/2024] [Indexed: 04/28/2024]
Abstract
Arabinoglucuronoxylans obtained from the exudate of Cercidium praecox (Brea gum) were subjected to an amidation reaction to modulate their flow behavior to obtain a product with similar behavior to gum Arabic. The amidation reaction of the uronic acids present in this exudate was studied using the 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC) and N-hydroxysuccinimide (NHS) system with the aim of maximizing product yield and minimizing by-product. An analysis of the significant factors involved in the reaction was carried out and a response surface methodology was conducted to optimize the stoichiometry of the reagents used. It was possible to obtain models for predicting the degree of amidation (DA) of arabinoglucuronoxylans and the formation of by-products. The formation of a secondary product derived from the amino acid β-alanine which has not been reported previously in the reaction with polysaccharides, was described. The flow behavior of an amidated product (DA = 52 %) was determined, showing a pseudoplastic behavior and a decreased Newtonian viscosity (η0 = 36.2 Pa s) at the lowest shear rate range with respect to native product solution (η0 = 115 Pa s). Amidated arabinoglucuronoxylans had a flow behavior more similar to that of gum Arabic.
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Affiliation(s)
- Frank Sznaider
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR/CONICET), Departamento de Química Orgánica, Ciudad Universitaria, C1428BGA Buenos Aires, Argentina
| | - Ana M Rojas
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Instituto de Tecnología de Alimentos y Procesos Químicos (ITAPROQ/CONICET-UBA), Departamento de Industrias, Ciudad Universitaria, C1428BGA Buenos Aires, Argentina
| | - Carlos A Stortz
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR/CONICET), Departamento de Química Orgánica, Ciudad Universitaria, C1428BGA Buenos Aires, Argentina
| | - Diego A Navarro
- Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Consejo Nacional de Investigaciones Científicas y Técnicas, Centro de Investigaciones en Hidratos de Carbono (CIHIDECAR/CONICET), Departamento de Química Orgánica, Ciudad Universitaria, C1428BGA Buenos Aires, Argentina.
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Olubi O, Obilana A, Tshilumbu N, Fester V, Jideani V. Physicochemical and Functional Properties of Citrullus mucosospermus, Citroides, and Moringa oleifera Seeds' Hydrocolloids. Foods 2024; 13:1131. [PMID: 38611435 PMCID: PMC11011541 DOI: 10.3390/foods13071131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 03/09/2024] [Accepted: 03/18/2024] [Indexed: 04/14/2024] Open
Abstract
Hydrocolloids form gel-like structures when dispersed in water and have garnered significant attention for their diverse applications in food, pharmaceuticals, and other industries. The extraction of hydrocolloids from natural sources, such as seeds, presents an intriguing avenue due to the potential diversity in composition and functionality. Utilising seeds from Citrullus lanatus mucosospermus, lanatus citroides, and Moringa aligns with the growing demand for natural and sustainable ingredients in various industries. This research investigated hydrocolloids extracted from Citrullus mucosospermus (CMS), lanatus citroides, and Moringa oleifera seeds, highlighting their versatile physicochemical and functional attributes. Hydrocolloids were extracted from the seeds and subjected to analysis of their proximate composition, particle size distribution, and interfacial tension using the hot water extraction method. Protein content variation was observed among the raw oilseed (CMS, Citroides, and Moringa oleifera) flours. The protein content of the hydrocolloids surpassed that of raw oilseeds, significantly enhancing the amino acid profile. Furthermore, the hydrocolloid ash contents ranged from 4.09% to 6.52% w/w dry weight, coupled with low fat levels. The particle size distribution revealed predominantly fine particles with a narrow size distribution. All three hydrocolloids demonstrated remarkable oil- and water-holding capacities, highlighting their suitability for efficient stabilisation and emulsification in food formulations. These findings suggest the potential utilisation of these hydrocolloids as valuable ingredients across a spectrum of applications, encompassing food, pharmaceuticals, and industry, thus contributing to the development of sustainable and functional products. The unique attributes presented herein mark a noteworthy advancement in the understanding and application of novel hydrocolloids from CMS, Citroides, and Moringa oleifera.
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Affiliation(s)
- Olakunbi Olubi
- Department of Food Science and Technology, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town 7535, South Africa; (O.O.); (A.O.)
| | - Anthony Obilana
- Department of Food Science and Technology, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town 7535, South Africa; (O.O.); (A.O.)
| | - Nsenda Tshilumbu
- Flow Process & Rheology Centre, Faculty of Engineering & the Built Environment, Cape Peninsula University of Technology, Cape Town 8000, South Africa; (N.T.); (V.F.)
| | - Veruscha Fester
- Flow Process & Rheology Centre, Faculty of Engineering & the Built Environment, Cape Peninsula University of Technology, Cape Town 8000, South Africa; (N.T.); (V.F.)
| | - Victoria Jideani
- Department of Food Science and Technology, Faculty of Applied Sciences, Cape Peninsula University of Technology, Cape Town 7535, South Africa; (O.O.); (A.O.)
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Chen L, He X, Pu Y, Wang H, Cao J, Jiang W. Adsorption removal properties of β-cyclodextrin-modified pectin on cholesterol and sodium cholate. Food Chem 2024; 430:137059. [PMID: 37541039 DOI: 10.1016/j.foodchem.2023.137059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 07/18/2023] [Accepted: 07/28/2023] [Indexed: 08/06/2023]
Abstract
A novel adsorbent β-cyclodextrin-modified pectin was synthesized for removing cholesterol and bile salts from the gastric-intestinal passage. Different amounts of β-cyclodextrin were cross-linked to pectin by aldol condensation reaction via glutaraldehyde. The prepared β-cyclodextrin-modified pectins were successfully confirmed by characterization, showing a higher specific surface area and improved thermal stability with satisfactory cellular compatibility. The introduction of β-cyclodextrins dramatically improved the cholesterol adsorption capacity of pectin due to their hydrophobic cavities. Meanwhile, the modified pectins exhibited superior adsorption for sodium cholate than β-cyclodextrin or pectin itself, which was attributed to hydrophobic interactions. P10:1 displayed the strongest adsorption performance, with a maximum adsorption ability of 44.21 mg/g for cholesterol and 21.38 mg/g for sodium cholate. Furthermore, their adsorption favored the Langmuir isotherm model and pseudosecond-order kinetic model. These results indicate that modified pectin has potential as a nature-based adsorbent for removal of cholesterol and bile salts in the health food industry.
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Affiliation(s)
- Luyao Chen
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
| | - Xu He
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
| | - Yijing Pu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
| | - Hongxuan Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
| | - Jiankang Cao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
| | - Weibo Jiang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, PR China.
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Wang J, Zhao C, Zhao S, Lu X, Ma M, Zheng J. Gelling properties of lysine-amidated citrus pectins: The key role of pH in both amidation and gelation. Carbohydr Polym 2023; 317:121087. [PMID: 37364957 DOI: 10.1016/j.carbpol.2023.121087] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/08/2023] [Accepted: 05/31/2023] [Indexed: 06/28/2023]
Abstract
The amidation of pectin by amino acids has been widely applied due to its safety and excellent gelling properties. This study systematically examined the effects of pH on the gelling properties of lysine-amidated pectin during amidation and gelation. Pectin was amidated over the range of pH 4-10, and the amidated pectin obtained at pH 10 showed the highest degree of amidation (DA, 27.0 %) due to the de-esterification, electrostatic attraction, and the stretching state of pectin. Moreover, it also exhibited the best gelling properties due to its greater numbers of calcium-binding regions (carboxyl groups) and hydrogen bond donors (amide groups). During gelation, the gel strength of CP (Lys 10) at pH 3-10 first increased and then decreased, with the highest gel strength at pH 8, which was due to the deprotonation of carboxyl groups, protonation of amino groups, and β-elimination. These results show that pH plays a key role in both amidation and gelation, with distinct mechanisms, and would provide a basis for the preparation of amidated pectins with excellent gelling properties. This will facilitate their application in the food industry.
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Affiliation(s)
- Jirong Wang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Chengying Zhao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Shaojie Zhao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Xingmiao Lu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Mengyu Ma
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Jinkai Zheng
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100193, China; College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China.
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Zheng C, Huang Y, Liang X, Shen B, Zhang G, Fei P. Novel Pickering emulsion gels stabilized solely by phenylalanine amidated pectin: Characterization, stability and curcumin bioaccessibility. Int J Biol Macromol 2023; 244:125483. [PMID: 37343609 DOI: 10.1016/j.ijbiomac.2023.125483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 05/25/2023] [Accepted: 06/17/2023] [Indexed: 06/23/2023]
Abstract
Pickering emulsion gels represent a novel class of non-toxic and biocompatible emulsions, offering extensive applications in the pharmaceutical and food additive sectors. This study delineates the synthesis of Pickering emulsion gels utilizing native and amidated pectin samples. Phenylalanine amidated pectin (AP) was procured via an ultra-low temperature enzyme method, while the control group (LP) adhered to an identical procedure without papain catalysis. Experimental outcomes revealed that the AP Pickering emulsion gel manifested superior stability compared to pectin emulsion samples (PE and LP). The Pickering emulsion gel from 5 % amidated pectin (5AP) retained stability throughout a 14-day emulsion stability assessment. Furthermore, all emulsion samples were evaluated for their capacity to deliver and sustain curcumin within an in vitro digestion simulation. Rheological properties and oil droplet size results indicated that the 5AP Pickering emulsion gel exhibited optimal cream index and emulsion stability, effectively inhibiting premature water-oil stratification within the emulsion and augmenting curcumin bioaccessibility. Within the in vitro digestion simulation, the 5AP Pickering emulsion gel demonstrated the highest curcumin bioaccessibility, measured at 17.96 %.
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Affiliation(s)
- Chenmin Zheng
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Yufan Huang
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Xiaojing Liang
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Bihua Shen
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Guoguang Zhang
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China.
| | - Peng Fei
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China.
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Yang Z, Meng H, Wang J, Chen H, Guo X, Yu S. Effect of different NaCl concentration on the structure-function relationship of citrus peel pectins modified by electrochemistry. Int J Biol Macromol 2023:125147. [PMID: 37268072 DOI: 10.1016/j.ijbiomac.2023.125147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 05/10/2023] [Accepted: 05/27/2023] [Indexed: 06/04/2023]
Abstract
In this study, the modified citrus peel pectins (CPPs) were successfully produced by electrochemistry with varying NaCl concentrations of 0, 0.01 % and 0.1 % w/v using an H-type cell at 40 mA current. After 4 h, the pH and oxidation-reduction potential (ORP) of oxidized CPP solution in the anodic region were 2.00- 2.52 and 371.17- 564.45 mV, respectively, due to the electrolysis of water, whereas those of reduced CPP solution in cathodic region were 9.46- 10.84 and - 202.77 ~ -230.57 mV. The modified CPPs in the anodic region (A-0, A-0.01, and A-0.1) exhibited significantly higher weight-average molecular weights and methyl esterification degrees than those in the cathodic region (C-0, C-0.01 and C-0.1). In contrast, the K+, Mg2+, and Ca2+ contents of A-0, A-0.01, and A-0.1 were lower than those of C-0, C-0.01 and C-0.1 due to the electrophoretic migration. Furthermore, the antioxidant activities of A-0 and A-0.01 solutions were stronger than those of the C-0, C-0.01, and C-0.1, while rheological and texture properties of their hydrogels showed contradictory results. Finally, the potential structure-function relationships of CPPs were explored by combining PCA and correlation analysis. Overall, this study introduced a potential approach for pectin purification and functional low-methoxyl pectin manufacturing.
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Affiliation(s)
- Zhanwei Yang
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; China-Singapore International Joint Research Institute, Guangzhou 511363, China
| | - Hecheng Meng
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China; China-Singapore International Joint Research Institute, Guangzhou 511363, China.
| | - Jin Wang
- The State Centre of Quality Supervision and Inspection for Camellia Products (Jiangxi), Ganzhou 341000, China
| | - Hualei Chen
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; China-Singapore International Joint Research Institute, Guangzhou 511363, China
| | - Xiaobing Guo
- School of Food Science and Technology, Shihezi University, Xinjiang Autonomus Region, Shihezi, China
| | - Shujuan Yu
- College of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou 510640, China; China-Singapore International Joint Research Institute, Guangzhou 511363, China.
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Li H, Wang Y, Zhao P, Guo L, Huang L, Li X, Gao W. Naturally and chemically acetylated polysaccharides: Structural characteristics, synthesis, activities, and applications in the delivery system: A review. Carbohydr Polym 2023; 313:120746. [PMID: 37182931 DOI: 10.1016/j.carbpol.2023.120746] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 02/22/2023] [Accepted: 02/22/2023] [Indexed: 03/03/2023]
Abstract
Acetylated polysaccharides refer to polysaccharides containing acetyl groups on sugar units. In the past, the acetylation modification of wall polysaccharides has been a hot research topic for scientists. However, in recent years, many studies have reported that acetylation-modified plant, animal, and microbial polysaccharide show great potential in delivery systems. From the latest perspective, this review systematically presents the different sources of naturally acetylated polysaccharides, the regularity of their modification, the chemical preparation of acetylation modifications, the biological activities and functions of acetylated polysaccharides, and the application in the delivery system. In nature, acetylated polysaccharides are extensively distributed in plants, microorganism, and animals. The level of acetylation modification, the distribution of chains, and the locations of acetylation modification sites differ between species. An increasing number of acetylated polysaccharides were prepared in the aqueous medium, which is safe, environment friendly, and low-cost. In addition to being necessary for plant growth and development, acetylated polysaccharides have immunomodulatory, antioxidant, and anticancer properties. The above-mentioned multiple sources, multifunctional and multi-active acetylated polysaccharides, make them an increasingly important part of delivery systems. We conclude by discussing the future directions for research and development and the potential uses for acetylated polysaccharides.
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Li Y, Dai Y, Tao Q, Xu L. Synthesis and characterization of amino acid-functionalized chitosan/poly(vinyl alcohol) for effective adsorption of uranium. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08587-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zheng C, Huang W, Zou Y, Huang W, Fei P, Zhang G. Fabrication of phenylalanine amidated pectin using ultra-low temperature enzymatic method and its hydrogel properties in drug sustained release application. Int J Biol Macromol 2022; 216:263-271. [PMID: 35788006 DOI: 10.1016/j.ijbiomac.2022.06.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/18/2022] [Accepted: 06/26/2022] [Indexed: 11/05/2022]
Abstract
In this study, pectin was modified with phenylalanine by ultra-low temperature enzymatic method to improve its gel properties. The grafting ratio of phenylalanine amidated pectin was studied under different reaction conditions. The highest value (29.21 %) was reached a reaction temperature of -5 °C and time of 12 h. Further analysis indicated that phenylalanine and high methoxyl pectin combined at the solid-liquid two phase interface under the catalysis of papain to form phenylalanine amidated pectin. Moreover, the physicochemical properties of pectin hydrogel and its feasibility as a sustained-release drug carrier were discussed. The results showed that phenylalanine amidated pectin can form hydrogel with a certain strength under acidic conditions, and there is no need to add a lot of soluble solids and divalent cations. Besides, the phenylalanine amidated pectin hydrogel as a sustained release carrier of drugs showed more sustained and complete drug release.
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Affiliation(s)
- Chenmin Zheng
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Wanping Huang
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Yuping Zou
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Wensi Huang
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China
| | - Peng Fei
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China.
| | - Guoguang Zhang
- The Engineering Technological Center of Mushroom Industry, School of Biological Science and Biotechnology, Minnan Normal University, Zhangzhou 363000, PR China.
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