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Xue H, Zha M, Tang Y, Zhao J, Du X, Wang Y. Research Progress on the Extraction and Purification of Anthocyanins and Their Interactions with Proteins. Molecules 2024; 29:2815. [PMID: 38930881 PMCID: PMC11206947 DOI: 10.3390/molecules29122815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Revised: 06/06/2024] [Accepted: 06/10/2024] [Indexed: 06/28/2024] Open
Abstract
Anthocyanins, as the most critical water-soluble pigments in nature, are widely present in roots, stems, leaves, flowers, fruits, and fruit peels. Many studies have indicated that anthocyanins exhibit various biological activities including antioxidant, anti-inflammatory, anti-tumor, hypoglycemic, vision protection, and anti-aging. Hence, anthocyanins are widely used in food, medicine, and cosmetics. The green and efficient extraction and purification of anthocyanins are an important prerequisite for their further development and utilization. However, the poor stability and low bioavailability of anthocyanins limit their application. Protein, one of the three essential nutrients for the human body, has good biocompatibility and biodegradability. Proteins are commonly used in food processing, but their functional properties need to be improved. Notably, anthocyanins can interact with proteins through covalent and non-covalent means during food processing, which can effectively improve the stability of anthocyanins and enhance their bioavailability. Moreover, the interactions between proteins and anthocyanins can also improve the functional characteristics and enhance the nutritional quality of proteins. Hence, this article systematically reviews the extraction and purification methods for anthocyanins. Moreover, this review also systematically summarizes the effect of the interactions between anthocyanins and proteins on the bioavailability of anthocyanins and their impact on protein properties. Furthermore, we also introduce the application of the interaction between anthocyanins and proteins. The findings can provide a theoretical reference for the application of anthocyanins and proteins in food deep processing.
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Affiliation(s)
| | | | | | | | | | - Yu Wang
- College of Traditional Chinese Medicine, Hebei University, No. 342 Yuhua East Road, Lianchi District, Baoding 071002, China; (H.X.); (M.Z.); (Y.T.); (J.Z.); (X.D.)
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Zhang G, Qi X, He L, Wang X, Zhao Y, Wang Q, Han J, Wang Z, Ding Z, Liu M. Non-covalent complexes of lutein/zeaxanthin and whey protein isolate formed at different pH levels: Binding interactions, storage stabilities, and bioaccessibilities. Curr Res Food Sci 2024; 8:100778. [PMID: 38854501 PMCID: PMC11157214 DOI: 10.1016/j.crfs.2024.100778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 05/05/2024] [Accepted: 05/26/2024] [Indexed: 06/11/2024] Open
Abstract
Lutein (Lut) and zeaxanthin (Zx) are promising healthy food ingredients; however, the low solubilities, stabilities, and bioavailabilities limit their applications in the food and beverage industries. A protein-based complex represents an efficient protective carrier for hydrophobic ligands, and its ligand-binding properties are influenced by the formulation conditions, particularly the pH level. This study explored the effects of various pH values (2.5-9.5) on the characteristics of whey protein isolate (WPI)-Lut/Zx complexes using multiple spectroscopic techniques, including ultraviolet-visible (UV-Vis), fluorescence, and Fourier transform infrared (FTIR) spectroscopies and dynamic light scattering (DLS). UV-Vis and DLS spectra revealed that Lut/Zx were present as H-aggregates in aqueous solutions, whereas WPI occurred as nanoparticles. The produced WPI-Lut/Zx complexes exhibited binding constants of 104-105 M-1, which gradually increased with increasing pH from 2.5 to 9.5. FTIR spectra demonstrated that pH variations and Lut/Zx addition caused detectable changes in the secondary WPI structure. Moreover, the WPI-Lut/Zx complexes effectively improved the physicochemical stabilities and antioxidant activities of Lut/Zx aggregates during long-term storage and achieved bioaccessibilities above 70% in a simulated gastrointestinal digestion process. The comprehensive data obtained in this study offer a basis for formulating strategies that can be potentially used in developing commercially available WPI complex-based xanthophyll-rich foods.
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Affiliation(s)
- Gang Zhang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
| | - Xin Qi
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
| | - Linlin He
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
| | - Xiao Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
- Liaocheng High-Tech Biotechnology Co., Ltd., Liaocheng, 252059, China
| | - Yanna Zhao
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
| | - Qingpeng Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
| | - Jun Han
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
- Liaocheng High-Tech Biotechnology Co., Ltd., Liaocheng, 252059, China
| | - Zhengping Wang
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
- Shandong Liang-Jian Biotechnology Co., Ltd., Zibo, 255000, China
| | - Zhuang Ding
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
- Shandong Liang-Jian Biotechnology Co., Ltd., Zibo, 255000, China
| | - Min Liu
- Institute of Biopharmaceutical Research, Liaocheng University, Liaocheng, 252059, China
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Li Y, Jia S, Zhang Y, Huang L, He R, Ma H. Characterization of the interaction between allicin and soy protein isolate and functional properties of the adducts. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:5156-5164. [PMID: 37005328 DOI: 10.1002/jsfa.12593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 06/08/2023]
Abstract
BACKGROUND Soybean meal, a by-product of the soybean oil production industry, has a high protein content but the compact globular structure of the protein from soybean meal limits its wide application in food processing. Allicin has been found to have numerous functional properties. In this study, allicin was interacted with soy protein isolate (SPI). The functional properties of the adducts were investigated. RESULTS Binding with allicin significantly quenched the fluorescence intensity of SPI. Static quenching was the main quenching mechanism. The stability of adducts decreased with increasing temperature. The greatest extent of binding between allicin and sulfhydryl groups (SH) of SPI was obtained at an allicin/SH molar ratio of 1:2. The amino groups of SPI did not bind with allicin covalently. Soy protein isolate was modified by allicin through covalent and non-covalent interactions. Compared with SPI, the emulsifying activity index and foaming capacity of adducts with a ratio of 3:1 were improved by 39.91% and 64.29%, respectively. Soy protein isolate-allicin adducts also exhibited obvious antibacterial effects. The minimum inhibitory concentrations (MICs) of SPI-allicin adducts on Escherichia coli and Staphylococcus aureus were 200 and 160 μg mL-1 , respectively. CONCLUSION The interaction of allicin with SPI is beneficial for the functional properties of SPI. These adducts can be used in different food formulations as emulsifiers, foamers, and transport carriers. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yunliang Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Food Physical Processing, Jiangsu University, Zhenjiang, China
| | - Shifang Jia
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Yubin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Liurong Huang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Food Physical Processing, Jiangsu University, Zhenjiang, China
| | - Ronghai He
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Food Physical Processing, Jiangsu University, Zhenjiang, China
| | - Haile Ma
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Institute of Food Physical Processing, Jiangsu University, Zhenjiang, China
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Gao Q, Chen J, Zhou G, Xu X. Different protein-anthocyanin complexes engineered by ultrasound and alkali treatment: Structural characterization and color stability. Food Chem 2023; 427:136693. [PMID: 37390735 DOI: 10.1016/j.foodchem.2023.136693] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/07/2023] [Accepted: 06/18/2023] [Indexed: 07/02/2023]
Abstract
Through alkali treatment (AT) and ultrasound (UT)-assisted processing producing covalent protein-anthocyanin complexes, we investigated the impact of treatment methods and protein types on conjugation efficiency, protein structure, and color stability. Our findings revealed the effective grafting of anthocyanins (ACNs) onto proteins, with myofibrillar protein (MP) exhibiting the highest conjugation efficiency of 88.33% after UT (p <.05). UT accelerated the structure unfolding of distinct protein samples, leading to the exposure of sulfhydryl, and hydrophobic groups in proteins, and enhanced the oxidation stability of ACNs. Notably, the modified ACNs maintained a favorable pH-color relationship, while U-MP showed a significantly higher absorbance (0.4998) than the other groups (p <.05) at pH 9.0, demonstrating an outstanding color improvement. UT-assisted processing also accelerated the NH3 reaction. Thus, the combination of UT and MP holds the potential for pH-color-responsive intelligent packaging and increases the efficiency of UT processing.
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Affiliation(s)
- Qianni Gao
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Jiahui Chen
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Guanghong Zhou
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
| | - Xinglian Xu
- Key Laboratory of Meat Processing, Ministry of Agriculture, State Key Lab of Meat Quality Control and Cultured Meat Development, Ministry of Science and Technology, Jiangsu Collaborative Innovation Center of Meat Production and Processing, College of Food Science and Technology, Nanjing Agricultural University, Nanjing 210095, China.
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Yang H, Gao Y, Sun S, Qu Y, Ji S, Wu R, Wu J. Formation, characterization, and antigenicity of lecithin-β-conglycinin complexes. Food Chem 2023; 407:135178. [PMID: 36525804 DOI: 10.1016/j.foodchem.2022.135178] [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: 06/29/2022] [Revised: 10/10/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022]
Abstract
Lipid binding has been proposed to represent a functional property of many allergenic proteins. This study investigated the formation, characterization, and antigenicity of lecithin-β-conglycinin complexes. The results indicate that lecithin was combined with β-conglycinin via static quenching and primarily driven by hydrogen bonds and van der Waals forces. In addition, heat treatment reduced the antigenicity of complexes, as evidenced by changes in molecular weight and secondary and tertiary structures. It revealed that large aggregates developed and more hydrophobic regions were exposed for complexes after heat treatment, as well as a decrease in the β-sheet contents and an increase in the β-turn and random coil contents. Furthermore, the average particle size of the complexes increased with increased temperature treatment, and the morphology of the complexes exhibited an amorphous polymer. These findings shedlight on the interaction between lecithin and β-conglycinin and help us understand the role of lecithin in allergic reactions.
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Affiliation(s)
- Hui Yang
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Yaran Gao
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Shuyuan Sun
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Yezhi Qu
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Shuaiqi Ji
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Rina Wu
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China.
| | - Junrui Wu
- College of Food Science, Shenyang Agricultural University, China; Engineering Research Center of Food Fermentation Technology, Liaoning, China; Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China.
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Vidotto DC, Tavares GM. Simultaneous binding of folic acid and lutein to β-lactoglobulin and α-lactalbumin: A spectroscopic and molecular docking study. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.102107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Jia N, Lin S, Yu Y, Zhang G, Li L, Zheng D, Liu D. The Effects of Ethanol and Rutin on the Structure and Gel Properties of Whey Protein Isolate and Related Mechanisms. Foods 2022; 11:foods11213480. [PMID: 36360094 PMCID: PMC9654987 DOI: 10.3390/foods11213480] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/21/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
The effects of different levels of rutin (0, 0.05%, 0.1%, 0.2% and 0.3% w/v) and ethanol on the structure and gel properties of whey protein isolate (WPI) were examined. The results showed that the addition of ethanol promoted the gel formation of WPI. The addition of rutin increased the gel strength of WPI and maintained the water-holding capacity of the gel. Ethanol caused an increase in thiol content and surface hydrophobicity, but rutin decreased the thiol content and surface hydrophobicity of WPI. The particle size, viscosity and viscoelasticity of WPI increased at rutin levels of 0.2% and 0.3%, indicating that rutin caused cross-linking and aggregation of WPI, but rutin had no significant effect on the zeta-potential, indicating that electrostatic interactions were not the main force causing the changes in protein conformation and gel properties. Ethanol and rutin improved the gel properties of WPI possibly by inducing cross-linking of WPIs via hydrophobic and covalent interactions.
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Han S, Cui F, McClements DJ, Xu X, Ma C, Wang Y, Liu X, Liu F. Structural Characterization and Evaluation of Interfacial Properties of Pea Protein Isolate-EGCG Molecular Complexes. Foods 2022; 11:foods11182895. [PMID: 36141023 PMCID: PMC9498586 DOI: 10.3390/foods11182895] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 09/06/2022] [Accepted: 09/11/2022] [Indexed: 11/18/2022] Open
Abstract
Highlights Pea protein isolate (PPI) and EGCG spontaneously formed complexes. Protein–polyphenol complexation was mainly driven by hydrogen bonding. The binding of EGCG influenced the structure and functionality of PPI. PPI-EGCG complexes had better emulsifier properties than PPI.
Abstract There is increasing interest in using plant-derived proteins in foods and beverages for environmental, health, and ethical reasons. However, the inherent physicochemical properties and functional performance of many plant proteins limit their widespread application. Here, we prepared pea protein isolate (PPI) dispersions using a combined pH-shift/heat treatment method, and then, prepared PPI-epigallocatechin-3-gallate (EGCG) complexes under neutral conditions. Spectroscopy, calorimetry, molecular docking, and light scattering analysis demonstrated that the molecular complexes formed spontaneously. This was primarily ascribed to hydrogen bonds and van der Waals forces. The complexation of EGCG caused changes in the secondary structure of PPI, including the reduction in the α-helix and increase in the β-sheet and disordered regions. These changes slightly decreased the thermal stability of the protein. With the accretion of EGCG, the hydrophilicity of the complexes increased significantly, which improved the functional attributes of the protein. Optimization of the PPI-to-EGCG ratio led to the complexes having better foaming and emulsifying properties than the protein alone. This study could broaden the utilization of pea proteins as functional ingredients in foods. Moreover, protein–polyphenol complexes can be used as multifunctional ingredients, such as antioxidants or nutraceutical emulsifiers.
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Affiliation(s)
- Shuang Han
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Fengzhan Cui
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | | | - Xingfeng Xu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Cuicui Ma
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Yutang Wang
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Xuebo Liu
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
| | - Fuguo Liu
- College of Food Science and Engineering, Northwest A&F University, Xianyang 712100, China
- Correspondence:
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Nanocarriers for β-Carotene Based on Milk Protein. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02868-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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