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Jiao S, Yang X, Zheng X, Pei Y, Liu J, Tang K. Effects of charge state of nano-chitin on the properties of polyvinyl alcohol composite hydrogel. Carbohydr Polym 2024; 330:121776. [PMID: 38368092 DOI: 10.1016/j.carbpol.2024.121776] [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: 10/02/2023] [Revised: 12/25/2023] [Accepted: 01/01/2024] [Indexed: 02/19/2024]
Abstract
The present work investigates the effects of nano-chitin with different charge, obtained by acid hydrolysis and TEMPO oxidation, on the structure and properties of borax crosslinked polyvinyl alcohol (PVA) hydrogels. In detail, nano-chitin prepared by acid hydrolysis (ACh) is positively charged (+28.8 mV). The electrostatic attraction between ACh and borax ions leads to a maximum tensile stress of composite hydrogel (ACh/PB), 54.25 KPa, 17 times of the borax crosslinked PVA (PB). In contrast, nano-chitin prepared by TEMPO-oxidation (TCh) shows negative charge (-59.0 mV). Due to the electrostatic repulsion with borax ions, the maximum tensile stress of composite hydrogel (TCh/PB) is only 9.25 KPa, a very limit reinforcing effect. However, TCh/PB showed better self-healing efficiency (96.0 %) as well as ionic conductivity (1.25 × 10-5 S/m). The present work shows that the charge state of the nano-chitin exerts great influence on the interaction with the crosslinking agent borax, therefore, affects the structure and properties of the final PVA composite hydrogels. The results could provide important information about making full use of nano-chitin as a reinforcement by adjusting its surface charge state.
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Affiliation(s)
- Shuhao Jiao
- School of Materials Science and Engineering, Zhengzhou University, Henan 450000, China
| | - Xuefei Yang
- School of Materials Science and Engineering, Zhengzhou University, Henan 450000, China
| | - Xuejing Zheng
- School of Materials Science and Engineering, Zhengzhou University, Henan 450000, China.
| | - Ying Pei
- School of Materials Science and Engineering, Zhengzhou University, Henan 450000, China
| | - Jie Liu
- School of Materials Science and Engineering, Zhengzhou University, Henan 450000, China.
| | - Keyong Tang
- School of Materials Science and Engineering, Zhengzhou University, Henan 450000, China
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Naji‐Tabasi S, Shakeri M, Modiri‐Dovom A, Shahbazizadeh S. Application of Pistacia atlantica Pickering emulsion-filled chitosan gel for targeted delivery of curcumin. Food Sci Nutr 2024; 12:2809-2817. [PMID: 38628200 PMCID: PMC11016426 DOI: 10.1002/fsn3.3962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 04/19/2024] Open
Abstract
Emulsion-filled hydrogels are a growing system in the food industry for delivering bioactive compounds. In this study, Baneh gum (BG) particles were prepared as a Pickering emulsion stabilizer for curcumin delivery. Then, BG Pickering emulsion was added to the chitosan solution (1.5%, 2.0%, and 2.5% w/w) in different Pickering emulsion (PE):hydrogel (HYD) ratios (1:3, 1:5, and 1:7) to create an emulsion-filled gel. The highest amount of Cur stability after the 3rd week of storage was observed in the sample containing 2.0% CS and a 1:7 PE:HYD ratio (97.36%). Pickering emulsion and emulsion-filled gel significantly protected the antioxidant activity of curcumin against the thermal process (p < .05). Curcumin loading in the emulsion-filled gel provided better protection against the gastric condition compared to the emulsion system. The chitosan hydrogel swells in an acidic environment, but its combination with the anionic structure of the emulsion causes a lower release of curcumin in the stomach environment, which can help the stability of curcumin in the digestive system and have a controlled release in the gastrointestinal tract.
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Affiliation(s)
- Sara Naji‐Tabasi
- Department of Food NanotechnologyResearch Institute of Food Science and Technology (RIFST)MashhadIran
| | - Monir‐sadat Shakeri
- Department of Food BiotechnologyResearch Institute of Food Science and Technology (RIFST)MashhadIran
| | - Atena Modiri‐Dovom
- Department of Food NanotechnologyResearch Institute of Food Science and Technology (RIFST)MashhadIran
| | - Saeedeh Shahbazizadeh
- Department of Food NanotechnologyResearch Institute of Food Science and Technology (RIFST)MashhadIran
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Yang S, Jin Y, Li F, Shi J, Liang J, Mei X. Pickering Emulsion Stabilized by Hordein-Whey Protein Isolate Complex: Delivery System of Quercetin. Foods 2024; 13:665. [PMID: 38472777 DOI: 10.3390/foods13050665] [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: 01/19/2024] [Revised: 02/14/2024] [Accepted: 02/16/2024] [Indexed: 03/14/2024] Open
Abstract
As a lipophilic flavonol, quercetin has low bioavailability, which limits its application in foods. This work aimed to prepare a hordein-based system to deliver quercetin. We constructed hordein-whey isolate protein fibril (WPIF) complexes (H-Ws) by anti-solvent precipitation method at pH 2.5. The TEM results of the complexes showed that spherical-like hordein particles were wrapped in WPIF clusters to form an interconnected network structure. FTIR spectra revealed that hydrogen bonds and hydrophobic interactions were the main driving forces for the complex formation. H-W1 (the mass ratio of hordein to WPIF was 1:1) with a three-phase contact angle of 70.2° was chosen to stabilize Pickering emulsions with oil volume fractions (φ) of 40-70%. CLSM images confirmed that the oil droplets were gradually embedded in the three-dimensional network structure of H-W1 with the increase in oil volume fraction. The emulsion with φ = 70% showed a tight gel structure. Furthermore, this emulsion exhibited high encapsulation efficiency (97.8%) and a loading capacity of 0.2%, demonstrating the potential to deliver hydrophobic bioactive substances. Compared with free quercetin, the bioaccessibility of the encapsulated quercetin (35%) was significantly improved. This study effectively promoted the application of hordein-based delivery systems in the food industry.
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Affiliation(s)
- Songqi Yang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100083, China
| | - Yunan Jin
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100083, China
| | - Feifan Li
- College of Food Science and Engineering, Shandong Agriculture and Engineering University, Jinan 250100, China
| | - Jinfeng Shi
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100083, China
| | - Jiahui Liang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100083, China
| | - Xiaohong Mei
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Safety Assessment of Genetically Modified Organism (Food Safety), Ministry of Agriculture and Rural Affairs of the People's Republic of China, Beijing 100083, China
- Center of Food Colloids and Delivery of Functionality, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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Lu S, Li X, Wei X, Huang C, Zheng J, Ou S, Yang T, Liu F. Preparation and Characterization of a Novel Natural Quercetin Self-Stabilizing Pickering Emulsion. Foods 2023; 12:foods12071415. [PMID: 37048236 PMCID: PMC10094174 DOI: 10.3390/foods12071415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 03/12/2023] [Accepted: 03/20/2023] [Indexed: 03/29/2023] Open
Abstract
In contrast to their well-known physiological properties, phytochemicals, such as flavonoids, have been less frequently examined for their physiochemical properties (e.g., surface activity). A natural quercetin self-stabilizing Pickering emulsion was fabricated and characterized in the present study. The antisolvent precipitation method was used to modify quercetin (in dihydrate form), and the obtained particles were characterized by light microscope, atom force microscope, XRD, and contact angle. The antisolvent treatment was found to reduce the particle size, crystallinity, and surface hydrophobicity of quercetin. We then examined the effects of the antisolvent ratio, particle concentration, and oil fraction on the properties of the quercetin particle-stabilized emulsions. In addition, increasing the antisolvent ratio (1:1~1:10) effectively improved the emulsification performance of the quercetin particles. The emulsion showed good storage stability, and the particle size of the emulsion decreased with the rising particle concentration and increased with the rising oil phase ratio. The findings indicate that natural quercetin treated with antisolvent method has a good ability to stabilize Pickering emulsion, and this emulsion may have good prospective application potential for the development of novel and functional emulsion foods.
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Affiliation(s)
- Shenglan Lu
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Xueying Li
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Xunran Wei
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Caihuan Huang
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Jie Zheng
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Shiyi Ou
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Tao Yang
- School of Pharmacy, Hainan Medical University, Haikou 571199, China
| | - Fu Liu
- Department of Food Science and Engineering, Jinan University, Guangzhou 510632, China
- Correspondence: ; Tel.: +86-020-85226630
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