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Zhou S, Liu X, Cui Y, Chen S, Zhong F, Lu J, Kong C. Molecular investigation of soybean protein for improving the stability of quinoa (Chenopodium quinoa willd.) milk substitute. Food Chem 2024; 461:140829. [PMID: 39146685 DOI: 10.1016/j.foodchem.2024.140829] [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: 04/05/2024] [Revised: 06/24/2024] [Accepted: 08/09/2024] [Indexed: 08/17/2024]
Abstract
Soybean could greatly improve stability of quinoa milk substitute. However, the key compound and underlying mechanisms remained unclear. Here we showed that soybean protein was the key component for improving quinoa milk substitute stability but not oil or okara. Supplementary level of soybean protein at 0%, 2%, 4%, and 8% of quinoa (w/w) was optimized. Median level at 4% could effectively enhance physical stability, reduce particle size, narrow down particle size distribution, and decrease apparent viscosity of quinoa milk substitute. Microscopic observation further confirmed that soybean protein could prevent phase separation. Besides, soybean protein showed increased surface hydrophobicity. Molecular docking simulated that soybean protein but not quinoa protein, could provide over 10 anchoring points for the most abundant quinoa vanillic acid, through hydrogen bond and Van-der-Waals. These results contribute to improve stability of quinoa based milk substitute, and provide theoretical basis for the interaction of quinoa phenolics and soybean protein.
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Affiliation(s)
- Sumei Zhou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, School of Food and health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Xinghao Liu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, School of Food and health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Yajun Cui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, School of Food and health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Siyi Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, School of Food and health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Fang Zhong
- Science Center for Future Food, Jiangnan University, Wuxi 214122, China
| | - Jing Lu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, School of Food and health, Beijing Technology & Business University (BTBU), Beijing 100048, China
| | - Chunli Kong
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Engineering and Technology Research Center of Food Additives, School of Food and health, Beijing Technology & Business University (BTBU), Beijing 100048, China.
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2
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Fu G, Zhao M, Wang X, Zheng Z, Shen S, Yan J, Li Q, Gao C, Dong X, Xiao J, Liu L. Effect of ultrasound-assisted pH-shifting treatment on the physicochemical properties of melon seed protein. ULTRASONICS SONOCHEMISTRY 2024; 110:107039. [PMID: 39197192 PMCID: PMC11396366 DOI: 10.1016/j.ultsonch.2024.107039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/16/2024] [Accepted: 08/20/2024] [Indexed: 09/01/2024]
Abstract
Melon seeds have received considerable attention in recent years because of their high protein content, but they have not yet been fully used. The modification of melon seed protein (MSP) using ultrasound-assisted pH-shifting treatment was investigated in this study by analyzing structural characteristics and functional properties. The particle size, free sulfhydryl content, surface hydrophobicity, solubility, secondary structure, water-holding capacity, oil-holding capacity, emulsification activity index, and emulsification stability index of MSP were determined. MSP treated with ultrasound-assisted, pH-shifting had a smaller particle size, lower free sulfhydryl content, higher surface hydrophobicity, and solubility increased from 43.67 % to 89.12 %. The secondary structure of MSP was affected by ultrasonic treatment, manifesting as an α-helix increase and β-helix, β-turn, and random coil content decrease, which may be the reason why the protein structure became more compact after treatment. The water and oil holding capacities of MSP increased from 2.74 g/g and 3.14 g/g in untreated samples to 3.19 g/g and 3.97 g/g for ultrasound-treated samples, and further increased to 3.97 g/g and 5.02 g/g for ultrasound-assisted, pH-shifting treatment at pH 9.0, respectively. The emulsification activity index of MSP was 21.11 m2/g before treatment and reached a maximum of 32.34 m2/g after ultrasound-assisted, pH-shifting treatment at pH 9.0. The emulsification stability of MSP was maximized by ultrasonic treatment at pH 7.0. Ultrasound-assisted, pH-shifting treatment can effectively improve the functional properties of MSP by modifying the protein structure, which improves the potential application of melon seed protein in the food industry.
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Affiliation(s)
- Guojun Fu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Man Zhao
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Xinmiao Wang
- Advanced Agri-Tech Institute, Qingdao Agricultural University, Qingdao 266109, China
| | - Zehao Zheng
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Shiyu Shen
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Jiawen Yan
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Qun Li
- College of Life Science and Technology, Xinjiang University, Urumqi 830000, China
| | - Chao Gao
- Key Laboratory of Trace Element Nutrition of National Health Commission, National Institute for Nutrition and Health, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Xuyan Dong
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Junxia Xiao
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China
| | - Liang Liu
- College of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China; Qingdao Special Food Research Institute, Qingdao 266109, China.
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3
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Chen Y, Li T, Jiang L, Huang Z, Zhang W, Luo Y. The composition, extraction, functional property, quality, and health benefits of coconut protein: A review. Int J Biol Macromol 2024:135905. [PMID: 39332551 DOI: 10.1016/j.ijbiomac.2024.135905] [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: 08/01/2024] [Revised: 09/18/2024] [Accepted: 09/20/2024] [Indexed: 09/29/2024]
Abstract
Coconut is widely appreciated for its distinctive flavor and is commonly utilized in the production of a variety of goods. Coconut protein, a by-product derived from coconut oil protein and coconut milk cake, is frequently underutilized or discarded. This study provides a comprehensive overview of the distribution and composition of coconut protein. Analyses reveal that coconut protein, specifically 11S globulin and 7S globulin, is predominantly found in coconut flesh. Furthermore, various extraction techniques for coconut protein, such as chemical, enzymatic, and physical methods, are discussed. The alkali dissolution and acid precipitation methods are widely utilized for extracting coconut protein, with the potential for enhancement through the incorporation of physical methods such as ultrasound. The evaluation of functional properties, quality, and health benefits of coconut protein is essential, given the limitations imposed by its solubility. Modification may be necessary to optimize its functional properties. Coconut presents a promising source of food protein, characterized by balanced amino acid composition, high digestibility, and low allergenic potential. In conclusion, this study provides a comprehensive overview of the extraction methods, functional properties, quality, and nutritional benefits of coconut protein, offering insights for potential future research directions in the field. Additionally, the information presented may serve as a valuable reference for incorporating coconut protein into plant-based food products.
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Affiliation(s)
- Yang Chen
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States of America
| | - Tong Li
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Lianzhou Jiang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zhaoxian Huang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China
| | - Weimin Zhang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou 570228, China; Key Laboratory of Tropical Fruits and Vegetables Quality and Safety for State Market Regulation, Hainan Institute for Food Control, Haikou 570228, China.
| | - Yangchao Luo
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT 06269, United States of America.
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4
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Ravindran N, Kumar Singh S, Singha P. A comprehensive review on the recent trends in extractions, pretreatments and modifications of plant-based proteins. Food Res Int 2024; 190:114575. [PMID: 38945599 DOI: 10.1016/j.foodres.2024.114575] [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: 02/22/2024] [Revised: 05/26/2024] [Accepted: 05/26/2024] [Indexed: 07/02/2024]
Abstract
Plant-based proteins offer sustainable and nutritious alternatives to animal proteins with their techno-functional attributes influencing product quality and designer food development. Due to the inherent complexities of plant proteins, proper extraction and modifications are vital for their effective utilization. This review highlights the emerging sources of plant-based proteins, and the recent statistics of the techniques employed for pretreatment, extraction, and modifications. The pretreatment, extraction and modification approach to modify plant proteins have been classified, addressed, and the recent applications of such methodologies are duly indicated. Furthermore, this study furnishes novel perspectives regarding the potential impacts of emerging technologies on the intricate dynamics of plant proteins. A thorough review of 100 articles (2018-2024) shows the researchers' keen interest in investigating novel plant proteins and how they can be used; seeds being the main source for protein extraction, followed by legumes. Use of by-products as a protein source is increasing rapidly, which is noteworthy. Protein studies still lack knowledge on protein fraction, antinutrients, and pretreatments. The use of physical methods and their combination with other techniques are increasing for effective and environmentally friendly extraction and modification of plant proteins. Several studies explore the effect of protein changes on their function and nutrition, especially with a goal of replacing ingredients with plant proteins that have improved or enhanced qualities. However, the next step is to investigate the sophisticated modification methods for deeper insights into food safety and toxicity.
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Affiliation(s)
- Nevetha Ravindran
- Department of Food Process Engineering, National Institute of Technology Rourkela, India.
| | - Sushil Kumar Singh
- Department of Food Process Engineering, National Institute of Technology Rourkela, India.
| | - Poonam Singha
- Department of Food Process Engineering, National Institute of Technology Rourkela, India.
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5
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Wang N, Wang C, Gao X, Zhao X, Wei H, Luo J, You X, Jiang H, Zhang X, Yuan C. Docosahexaenoic acid-mediated milk protein treated by ultrasound-assisted pH shifting for enhanced astaxanthin delivery and processed cheese application. J Dairy Sci 2024; 107:4161-4173. [PMID: 38246556 DOI: 10.3168/jds.2023-24342] [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: 10/22/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024]
Abstract
Whey protein isolate (WPI)-based nanodelivery systems have recently attracted an increasing amount of attention. Despite this, research focusing on milk protein concentrate (MPC) and micellar casein (MCC) as carriers loaded in hydrophobic compounds is lacking. This study investigated the mediated effect of docosahexaenoic acid (DHA) in 3 different milk proteins for the embedding of astaxanthin (ASTA) after ultrasound-assisted pH-shifting treatment. We then evaluated the application of milk protein carriers in cheese processing by comparing MPC, MCC, and WPI. The particle size, polydispersity index, and zeta potential results of the milk protein-DHA complex suggested that the addition of 0.36 μmol/mL DHA optimized the delivery of milk protein to ASTA. All 3 DHA-mediated milk proteins induced an improvement in encapsulation efficiency and antioxidant properties of ASTA. Furthermore, the DHA-mediated MPC and MCC played a stronger role in improving the bioaccessibility and thermal and storage stability of ASTA than those without DHA. Tests conducted to examine the application in cheese production indicated that MCC carrier had a positive effect on the texture of cheeses. However, the delivery effect was dependent on the milk protein variety, and MCC exhibited the best protection ability of ASTA, followed by MPC and WPI. The simulated digestion and storage stability results of cheese further confirmed that the protein encapsulation mediated by DHA was more conducive to ASTA absorption. These findings suggested that the DHA-mediated milk protein complexes studied here may be suitable hydrophilic delivery carriers for the hydrophobic nutrient ASTA, potentially playing different roles in improving its storage stability and bioaccessibility.
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Affiliation(s)
- Ning Wang
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Cunfang Wang
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China.
| | | | - Xinqi Zhao
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Haitao Wei
- Shandong Panda Dairy Co., Jinan 251400, China
| | - Juanjuan Luo
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Xinyu You
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Hua Jiang
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Xiaoning Zhang
- School of Food Science and Engineering, Qilu University of Technology (Shandong Academy of Science), Jinan 250353, China
| | - Cunzhong Yuan
- Department of Obstetrics and Gynecology, Qilu Hospital of Shandong University, Jinan 250012, China.
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6
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Wu J, Tang Y, Zhang M, Chen W, Chen H, Zhong Q, Pei J, He R, Chen W. Mechanism for improving the in vitro digestive properties of coconut milk by modifying the structure and properties of coconut proteins with monosodium glutamate. Food Res Int 2024; 185:114288. [PMID: 38658074 DOI: 10.1016/j.foodres.2024.114288] [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: 11/29/2023] [Revised: 03/09/2024] [Accepted: 03/27/2024] [Indexed: 04/26/2024]
Abstract
In this paper, the effect of monosodium glutamate (MSG) on coconut protein (CP) solubility, surface hydrophobicity, emulsification activity, ultraviolet spectroscopy and fluorescence spectroscopy was investigated. Meanwhile, the changes in the in vitro digestive properties of coconut milk were also further analyzed. MSG treatment altered the solubility and surface hydrophobicity of CP, thereby improving protein digestibility. Molecular docking showed that CP bound to pepsin and trypsin mainly through hydrogen bonds and salt bridges. And MSG increased the cleavable sites of pepsin and trypsin on CP, thus further improving the protein digestibility. In addition, MSG increased the Na+ concentration in coconut milk, promoted flocculation and aggregation between coconut milk droplets, which prevented the binding of lipase and oil droplets and inhibited lipid digestion. These findings may provide new ideas and insights to improve the digestive properties of plant-based milk.
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Affiliation(s)
- Jiawu Wu
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Yingjiao Tang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Ming Zhang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Wenxue Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Haiming Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Qiuping Zhong
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Jianfei Pei
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Rongrong He
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
| | - Weijun Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
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7
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Lapčíková B, Lapčík L, Valenta T, Chvatíková M. Plant-Based Emulsions as Dairy Cream Alternatives: Comparison of Viscoelastic Properties and Colloidal Stability of Various Model Products. Foods 2024; 13:1225. [PMID: 38672897 PMCID: PMC11049096 DOI: 10.3390/foods13081225] [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: 03/19/2024] [Revised: 04/10/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
In the context of growing interest in plant-based food products for their potential health benefits and sustainability, this study investigates the effect of mono- and diglycerides of fatty acids application on physico-chemical properties of various plant-based cream products, compared to lecithin application in rice cream. Rheological and textural parameters, colour profile, and colloidal stability were analysed. The application of mono- and diglycerides modified the creams' viscoelastic behaviour, showing a decrease in viscoelasticity across the samples; although in oat-coconut cream resulted in a higher viscoelasticity, indicating the formation of a gel-like structure. Rice cream with lecithin emulsifier showed lower viscoelastic properties characterised by higher phase angle (tan δ). All samples behaved as pseudoplastic materials (with a flow behaviour index n < 1). For coconut and almond creams, the consistency coefficient increased and flow behaviour index decreased after emulsifier application. Interestingly, the emulsifier addition did not significantly affect the cream's colour profile, characterised by yellow hue angle (h*) as a dominant spectral component. The colloidal stability, indicated by a stability index (SI), was determined as well.
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Affiliation(s)
- Barbora Lapčíková
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, CZ-771 46 Olomouc, Czech Republic;
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, Nám. T. G. Masaryka 5555, CZ-760 01 Zlín, Czech Republic; (T.V.); (M.C.)
| | - Lubomír Lapčík
- Department of Physical Chemistry, Faculty of Science, Palacky University Olomouc, 17. Listopadu 12, CZ-771 46 Olomouc, Czech Republic;
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, Nám. T. G. Masaryka 5555, CZ-760 01 Zlín, Czech Republic; (T.V.); (M.C.)
| | - Tomáš Valenta
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, Nám. T. G. Masaryka 5555, CZ-760 01 Zlín, Czech Republic; (T.V.); (M.C.)
| | - Marie Chvatíková
- Department of Food Technology, Faculty of Technology, Tomas Bata University in Zlín, Nám. T. G. Masaryka 5555, CZ-760 01 Zlín, Czech Republic; (T.V.); (M.C.)
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8
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Daryani D, Pegua K, Aryaa SS. Review of plant-based milk analogue: its preparation, nutritional, physicochemical, and organoleptic properties. Food Sci Biotechnol 2024; 33:1059-1073. [PMID: 38440691 PMCID: PMC10909032 DOI: 10.1007/s10068-023-01482-z] [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: 04/25/2023] [Revised: 10/30/2023] [Accepted: 11/09/2023] [Indexed: 03/06/2024] Open
Abstract
In recent years, the market demand for plant-based milk analogues has been rising because of health concerns with bovine milk, like lactose intolerance and hypercholesteremia. Another reason is the lifestyle changes like adopting veganism. This review aims to offer a layout of the manufacturing process and discuss the different properties of plant-based milk analogues. The health benefits offered by the plant-based milk analogues and measures taken to eliminate the existing limitations are also discussed. Sensory profile and stability of plant-based milk analogues which add to the quality of the product were also taken into account and reviewed. The current review's objective is to present a comprehensive, scientifically comparable overview of the preparation procedures, nutritional content, and sensory characteristics of plant-based milk analogues. This is done while keeping in mind the potential of plant-based milk substitutes and associated challenges.
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Affiliation(s)
- Drushti Daryani
- Food Engineering and Technology Department, Institute of Chemical Technology, NM Parikh Marg, Matunga, Mumbai, Maharashtra 400 019 India
| | - Kakoli Pegua
- Food Engineering and Technology Department, Institute of Chemical Technology, NM Parikh Marg, Matunga, Mumbai, Maharashtra 400 019 India
| | - Shalini S. Aryaa
- Food Engineering and Technology Department, Institute of Chemical Technology, NM Parikh Marg, Matunga, Mumbai, Maharashtra 400 019 India
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9
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Zhao R, Fu W, Li D, Dong C, Bao Z, Wang C. Structure and functionality of whey protein, pea protein, and mixed whey and pea proteins treated by pH shift or high-intensity ultrasound. J Dairy Sci 2024; 107:726-741. [PMID: 37777001 DOI: 10.3168/jds.2023-23742] [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: 05/14/2023] [Accepted: 09/05/2023] [Indexed: 10/02/2023]
Abstract
Three modifications (pH shift, ultrasound, combined pH shift and ultrasound) induced alterations in pure whey protein isolate (WPI), pea protein isolate (PPI), and mixed whey and pea protein (WPI-PPI) were investigated. The processing effect was related to the protein type and technique used. Solubility of WPI remained unchanged by various treatments. Particle size was enlarged by pH shift while reduced by ultrasound and combined approach. All methods exposed more surface hydrophobic groups on WPI, while pH shift and joint processing was detrimental to its emulsifying activity. The PPI and mixture exhibited similar responses toward the modifications. Solubility of PPI and the blend enhanced in the sequence of pH shift and ultrasound > ultrasound > pH shift. Individual approach expanded while co-handling diminished the particle diameter. Treatments also caused more disclosure of hydrophobic regions in PPI and WPI-PPI and emulsifying activity was ameliorated in the order of pH shift and ultrasound > ultrasound > pH shift.
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Affiliation(s)
- Ru Zhao
- Department of Food Science, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Wenfei Fu
- Department of Food Science, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Dan Li
- Department of Food Science, College of Food Science and Engineering, Jilin University, Changchun, 130062, China
| | - Chao Dong
- Key Laboratory of Pathobiology, Ministry of Education, Jilin University, Changchun 130021, China
| | - Zhaoxue Bao
- Hinggan League Mengyuan Technology Testing Service Co. Ltd., Ulanhot 137400, China
| | - Cuina Wang
- Department of Food Science, College of Food Science and Engineering, Jilin University, Changchun, 130062, China.
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10
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Chen Y, Chen Y, Fang Y, Pei Z, Zhang W. Coconut milk treated by atmospheric cold plasma: Effect on quality and stability. Food Chem 2024; 430:137045. [PMID: 37541035 DOI: 10.1016/j.foodchem.2023.137045] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 07/04/2023] [Accepted: 07/26/2023] [Indexed: 08/06/2023]
Abstract
Commercial sterilization plays an important role in extending the shelf-life of coconut milk. However, thermal sterilization affects the quality of coconut milk. This study was initiated to evaluate the effects of atmospheric cold plasma (ACP) treatment on some important quality parameters of coconut milk. ACP treatment had a slight effect on physicochemical characteristics and nutritional ingredients while it obviously reduced the colony count. Furthermore, ACP treatment obviously promoted the formation of lactone, an indispensable volatile substance in coconut milk. Insufficient or moderate ACP treatment had subtle effect on the sensory quality. Notably, moderate ACP treatment reduced the droplet size from 28.0 μm to 18.6 μm, and improved the stability during storage and centrifugation, especially at 60 kV 60 s. Overall, sterilization of coconut milk by ACP at 60 kV 60 s was the most ideal. This study can provide theoretical guidance for the application of ACP in liquid food.
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Affiliation(s)
- Yang Chen
- School of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Yile Chen
- School of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Yajing Fang
- School of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Zhisheng Pei
- School of Food Science and Engineering, Hainan University, Hainan 570228, China; School of Food Science and Engineering, Hainan Tropical Ocean University, Sanya 572022, China
| | - Weimin Zhang
- School of Food Science and Engineering, Hainan University, Hainan 570228, China.
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11
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Wu J, Tang Y, Chen W, Chen H, Zhong Q, Pei J, Han T, Chen W, Zhang M. Mechanism for improving coconut milk emulsions viscosity by modifying coconut protein structure and coconut milk properties with monosodium glutamate. Int J Biol Macromol 2023; 252:126139. [PMID: 37543272 DOI: 10.1016/j.ijbiomac.2023.126139] [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: 01/30/2023] [Revised: 07/06/2023] [Accepted: 08/02/2023] [Indexed: 08/07/2023]
Abstract
In this study, monosodium glutamate (MSG) was used to improve the viscosity of coconut milk and the underlying mechanism was explored by investigating the changes in structures of coconut milk protein and physicochemical properties of coconut milk. Firstly, the effect of MSG on the properties of coconut milk was studied. The results showed that MSG increased the pH and zeta potential, reduced the particle size, thus enhancing the droplet interaction and increasing the viscosity of coconut milk. Subsequently, the effects of MSG on the structure and properties of coconut proteins (CP) were investigated. FTIR spectroscopy and circular dichroism spectroscopy showed that MSG was able to change the secondary structure of CP. The results of SDS-PAGE showed that MSG was able to bind to CP to form a larger molecular weight protein, thus improving the viscosity of coconut milk. Moreover, MSG was also able to increase the water-binding capacity of CP. In addition, molecular docking and driving force analysis revealed that hydrogen bonds, electrostatic forces, disulfide bonds, and hydrophobic interactions are the main interactions between MSG and CP. Studying the effect of MSG on the viscosity of coconut milk provides theoretical support to improve the viscosity of other plant protein emulsions.
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Affiliation(s)
- Jiawu Wu
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Yingjiao Tang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Wenxue Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Haiming Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China; Maritime Academy, Hainan Vocational University of Science and Technology, 18 Qiongshan Road, Haikou 571126, PR China
| | - Qiuping Zhong
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Jianfei Pei
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Tao Han
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China
| | - Weijun Chen
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
| | - Ming Zhang
- HNU-HSF/LWL Collaborative Innovation Laboratory, School of Food Science and Engineering, Hainan University, 58 Renmin Road, Haikou 570228, PR China.
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12
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Ding S, Ye X, Qu L, Mu J, Huang L, Dai C. Modification of whey protein isolate by ultrasound-assisted pH shift for complexation with carboxymethylcellulose: Structure and interfacial properties. Int J Biol Macromol 2023; 252:126479. [PMID: 37625757 DOI: 10.1016/j.ijbiomac.2023.126479] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 08/17/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
The application of whey protein isolate (WPI) is limited because of its compact spherical structure. In this study, ultrasound-assisted pH shift was employed to modify WPI for complexation with carboxymethylcellulose (CMC). The foaming and emulsifying properties of WPI/CMC complexes were investigated. The results demonstrate that the pretreatment of ultrasound-assisted pH 12 shift increased the content of free sulfhydryl groups from 16.5 μmol/g to 34.7 μmol/g and enhanced protein hydrophobicity from 311.4 to 370.6 (p < 0.05). Compared to the complexes formed by untreated WPI and CMC, the complexes pretreated with ultrasound-assisted pH 12 shift had a smaller size of 293.4 nm and a more uniform distribution. Furthermore, WPI/CMC complexes pretreated by ultrasound-assisted pH 12 shift exhibited higher emulsifying activity and emulsion stability index, which were increased by 8.9 % and 42.6 % respectively, in comparison with the control group (p < 0.05). A positive correlation was found between the surface hydrophobicity of WPI and emulsifying activity of WPI/CMC complexes. Ultrasound-assisted pH 2 shift improved the foaming capacity of complexes by 28.3 % over the control (p < 0.05). All the results indicate that the interfacial properties of WPI/CMC complexes can be improved significantly by the combination of pH shift and ultrasound.
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Affiliation(s)
- Shuang Ding
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
| | - Xiang Ye
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
| | - Lulu Qu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
| | - Jing Mu
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
| | - Liurong Huang
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China.
| | - Chunhua Dai
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China; Institute of Food Physical Processing, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, Jiangsu, China
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13
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Wang J, Wang X, Wang W, Zhang L, Zhao Y. Functionalization of pine kernel protein by pH-shifting combined with ultrasound treatments: Further improvement with increasing acidity. Int J Biol Macromol 2023; 248:125884. [PMID: 37473900 DOI: 10.1016/j.ijbiomac.2023.125884] [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: 04/07/2023] [Revised: 07/09/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023]
Abstract
As a novel plant protein, developing various aspects of pine kernel protein (PKP) functionality is essential to meet the demand for protein-rich foods. To achieve this, the PKP was functionalized by a combination of pH-shifting and ultrasound techniques. The solubility, emulsification and droplet stability of the PKP in the pH range suitable to food (pH 3 to 7) were further investigated. The pH 12-shifting was an effective strategy to increase the solubility of PKP under extreme acidic and neutral conditions, characterized by a higher content of β-sheets and random coils, a greater exposure of free sulfhydryl and hydrophobic groups. Furthermore, appropriate ultrasonic power (250 W) further improved the solubility of PKPs by disrupting intermolecular hydrogen and hydrophobic bonds. As the ambient acidity increased, the emulsions exhibited higher viscoelasticity and stronger protein interactions. Especially at pH 3, the oil droplets stabilized by U250-PKP-12 (PKP treated with 250 W ultrasound-assisted pH 12-shifting) were homogeneously dispersed and surrounded by dense protein, maintaining small particle size and large electrostatic repulsion, and there was no apparent creaming or phase separation in the emulsions after 10 days of storage. Thus, the functionality of PKP after pH-shifting combined with ultrasonic treatments is further enhanced by increasing the environmental acidity.
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Affiliation(s)
- Jiarong Wang
- Department of Food Science, School of Forestry, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Xuemei Wang
- Department of Food Science, School of Forestry, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Wenqi Wang
- Department of Food Science, School of Forestry, Northeast Forestry University, Harbin 150040, People's Republic of China
| | - Ligang Zhang
- College of Food Science, Northeast Agricultural University, Harbin 150030, People's Republic of China.
| | - Yuhong Zhao
- Department of Food Science, School of Forestry, Northeast Forestry University, Harbin 150040, People's Republic of China; Key Laboratory of Forest Food Resources Utilization of Heilongjiang Province, Harbin 150040, People's Republic of China.
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14
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Qian S, Lan T, Zhao X, Song T, Cao Y, Zhang H, Liu J. Mechanism of ultrasonic combined with different fields on protein complex system and its effect on its functional characteristics and application: A review. ULTRASONICS SONOCHEMISTRY 2023; 98:106532. [PMID: 37517277 PMCID: PMC10407543 DOI: 10.1016/j.ultsonch.2023.106532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 07/13/2023] [Accepted: 07/19/2023] [Indexed: 08/01/2023]
Abstract
In recent years, new food processing technologies (such as ultrasound, high-pressure homogenization, and pulsed electric fields) have gradually appeared in the public 's field of vision. These technologies have made outstanding contributions to changing the structure and function of protein complexes. As a relatively mature physical field, ultrasound has been widely used in food-related fields. However, with the gradual deepening of related research, it is found that the combination of different fields often makes some characteristics of the product better than the product under the action of a single field, which will not only lead to a broader application prospect of the product, but also make the product a better solution in some special fields. There are usually synergistic and antagonistic effects when multiple fields are combined, and these effects will also gradually enlarge the interaction between different components of the protein complex system. In this paper, while explaining the mechanism of ultrasonic combined with other fields affecting the steric hindrance and shielding site of protein complex system, we will further explain the effect of this effect on the function and application of protein complex system.
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Affiliation(s)
- Sheng Qian
- College of Food Science and Engineering, National Engineering Research Center of Wheat and Corn Further Processing, Jilin Agricultural University, Changchun 130118, China
| | - Tiantong Lan
- College of Food Science and Engineering, National Engineering Research Center of Wheat and Corn Further Processing, Jilin Agricultural University, Changchun 130118, China
| | - Xu Zhao
- Jilin Province Institute of Product Quality Supervision and Inspection, Changchun 130022, China
| | - Tingyu Song
- College of Food Science and Engineering, National Engineering Research Center of Wheat and Corn Further Processing, Jilin Agricultural University, Changchun 130118, China
| | - Yong Cao
- College of Food Science and Engineering, National Engineering Research Center of Wheat and Corn Further Processing, Jilin Agricultural University, Changchun 130118, China
| | - Hao Zhang
- College of Food Science and Engineering, National Engineering Research Center of Wheat and Corn Further Processing, Jilin Agricultural University, Changchun 130118, China.
| | - Jingsheng Liu
- College of Food Science and Engineering, National Engineering Research Center of Wheat and Corn Further Processing, Jilin Agricultural University, Changchun 130118, China.
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