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Wang F, Fan W, Qi G, Liu H, Ma X, Sun X, Li J, Gong H. Effect of jujube pulp on acid- and rennet-induced coagulation properties of milk. J Dairy Sci 2024; 107:4298-4307. [PMID: 38331176 DOI: 10.3168/jds.2023-24397] [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: 11/05/2023] [Accepted: 01/11/2024] [Indexed: 02/10/2024]
Abstract
Milk coagulation is an important step in the production of fermented dairy products such as yogurt and cheese. Jujube is gaining popularity and acceptance as a food ingredient. In China, jujube yogurt is popular among consumers. However, there is limited information on the effect of jujube on acid- and rennet-induced coagulation properties of milk. The objective of this study was to evaluate the effects of jujube pulp at different concentrations on acid- and rennet-induced coagulation kinetics of milk and the microstructure of acid- and rennet-induced gels. During acid-induced coagulation, with increasing jujube pulp concentration, the initial pH value decreased; however, the final pH value increased. The initial elasticity index (EI) value increased, and the time point at which the mean square displacement curves lost the linear trend advanced. The sample with 10% jujube pulp had the densest structure and highest EI value. During rennet-induced coagulation, with increasing jujube pulp concentration, the production rate and amount of caseinomacropeptide decreased, and the final EI value increased. Protein aggregates in rennet-induced gels became rough, and the sample with 20% jujube pulp had the highest EI value. This study provides a new perspective and understanding of the application of jujube in fermented dairy products.
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Affiliation(s)
- Fang Wang
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China.
| | - Wanning Fan
- Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China
| | - Guoying Qi
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China
| | - Huan Liu
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China
| | - Xiuli Ma
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China
| | - Xuemei Sun
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China
| | - Junke Li
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China
| | - Hansheng Gong
- School of Food Engineering, Yantai Key Laboratory of Nanoscience and Technology for Prepared Food, Yantai Engineering Research Center of Green Food Processing and Quality Control, Ludong University, Yantai 264025, Shandong, China.
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Wu J, Dai T, Lin R, Niu J, Li Z, Chang Z, Jia C, Zou C, Jiang D, Jin M, Huang J, Gao H. Effect of protein-glutaminase on the texture, rheology, microstructure and sensory properties of skimmed set-type yoghurt. Food Chem 2023; 429:136831. [PMID: 37480778 DOI: 10.1016/j.foodchem.2023.136831] [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: 03/09/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/24/2023]
Abstract
The effects of enzymatic deamidation by protein-glutaminase (PG) on the texture, rheology, microstructure, and sensory properties of skimmed set-type yoghurt were studied. The proportion of small-particle size milk protein micelles (10-50 nm) increased significantly from 0 to 99.39% after PG deamidation. Cryo-SEM results revealed that PG-treated yoghurt had a denser and less open 3D structure. PG was effective at inhibiting post-acidification during storage at 4 ℃. The water holding capacity of PG-treated yoghurt (0.12 U·mL-1) increased by more than 15%. The fluidity and viscosity of yoghurt were significantly improved with increasing PG dose. Sensory evaluation revealed that PG (0.06 U·mL-1) significantly improved the smoothness and creaminess of skimmed set-type yoghurt, which corresponded to the pastiness in texture. In summary, PG can effectively address the problems of post-acidification, gel fracture, and flavors change in skimmed set-type yoghurt, providing new applications for PG in the food industry.
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Affiliation(s)
- Jiajing Wu
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Tian Dai
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Rongyu Lin
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Jinjin Niu
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Zhen Li
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Zhongyi Chang
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Caifeng Jia
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Chunjing Zou
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Deming Jiang
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Mingfei Jin
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China
| | - Jing Huang
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China.
| | - Hongliang Gao
- School of Life Sciences, East China Normal University, Shanghai 200241, PR China.
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Wang W, Jia R, Hui Y, Zhang F, Zhang L, Liu Y, Song Y, Wang B. Utilization of two plant polysaccharides to improve fresh goat milk cheese: Texture, rheological properties, and microstructure characterization. J Dairy Sci 2023; 106:3900-3917. [PMID: 37080791 DOI: 10.3168/jds.2022-22195] [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: 04/14/2022] [Accepted: 12/22/2022] [Indexed: 04/22/2023]
Abstract
This study aimed to evaluate the effects of added jujube polysaccharide (JP) and Lycium barbarum polysaccharide (LBP) on the texture, rheological properties, and microstructure of goat milk cheese. Seven groups of fresh goat milk cheese were produced with 4 levels (0, 0.2, 0.6, and 1%, wt/wt) of JP and LBP. The goat milk cheese containing 1% JP showed the highest water-holding capacity, hardness, and the strongest rheological properties by creating a denser and more stable casein network structure. In addition, the yield of goat milk cheese was substantially improved as a result of JP incorporation. Cheeses containing LBP expressed lower fat content, higher moisture, and softer texture compared with the control cheese. Fourier-transform infrared spectroscopy and low-field nuclear magnetic resonance analysis demonstrated that the addition of JP improved the stability of the secondary protein structure in cheese and significantly enhanced the binding capacity of the casein matrix to water molecules due to strengthened intermolecular interactions. The current research demonstrated the potential feasibility of modifying the texture of goat milk cheese by JP or LBP, available for developing tunable goat milk cheese to satisfy consumer preferences and production needs.
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Affiliation(s)
- Weizhe Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Rong Jia
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Yuanyuan Hui
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Fuxin Zhang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Lei Zhang
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China
| | - Yufang Liu
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China
| | - Yuxuan Song
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Bini Wang
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an, Shaanxi 710119, China.
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Wang F, Tian S, Fan W, Sun X. Effect of jujube pulp on rennet-induced coagulation properties of milk with different fat contents. Int Dairy J 2023. [DOI: 10.1016/j.idairyj.2023.105593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Effect of acid/alkali shifting on function, gelation properties, and microstructure of Mesona chinensis polysaccharide-whey protein isolate gels. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2021.106699] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Galante M, Boeris V, Risso PH. Evaluation of the effect of Gleditsia amorphoides gum on the properties of rennet-induced milk protein gels. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2019.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Han Y, Mei Y, Li K, Xu Y, Wang F. Effect of transglutaminase on rennet-induced gelation of skim milk and soymilk mixtures. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:1820-1827. [PMID: 30255502 DOI: 10.1002/jsfa.9375] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 09/09/2018] [Accepted: 09/16/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Protein gels made from cow milk and soymilk can yield products of exceptional value. Transglutaminase (TG) affect rennet-induced gelation of proteins, and improves the functionality of the final products. In this paper, TG and rennet were added to skim milk and soymilk mixtures simultaneously, and the rennet-induced coagulation was studied. Diffusing wave spectroscopy and rheology measurements were used to access the structural changes of the mixtures during renneting. Syneresis analysis and microscopy can give more information for understanding the system. RESULTS Soymilk and TG have synergetic effects and inhibit rennet-induced gelation to a certain degree. With increasing soymilk and TG, elastic index and storage modulus decreased, gelation time was delayed, and curd yield and moisture content increased. At excess soymilk and TG, no curds can be formed. There were significant effects of soymilk and TG on curd microstructure. Soymilk inhibited the aggregation of casein micelles and contributed to more coarse and heterogeneous networks. TG limited reorganization of the proteins, leading to more homogenous networks with small pores. CONCLUSION The use of soymilk and TG simultaneously impair rennet-induced gelation and curd syneresis, and consequently lead to a higher yield of high-moisture curd. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Yixuan Han
- Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides, Food Science and Engineering College, Beijing University of Agriculture, Beijing, P. R. China
| | - Yuting Mei
- Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides, Food Science and Engineering College, Beijing University of Agriculture, Beijing, P. R. China
| | - Kaixin Li
- Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides, Food Science and Engineering College, Beijing University of Agriculture, Beijing, P. R. China
| | - Yiqing Xu
- Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides, Food Science and Engineering College, Beijing University of Agriculture, Beijing, P. R. China
| | - Fang Wang
- Beijing Laboratory for Food Quality and Safety, Beijing Key Laboratory of Agricultural Product Detection and Control for Spoilage Organisms and Pesticides, Food Science and Engineering College, Beijing University of Agriculture, Beijing, P. R. China
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Bulut-Solak B, Alonso-Miravalles L, O'Mahony JA. Composition, morphology and pasting properties of Orchis anatolica tuber gum. Food Hydrocoll 2017. [DOI: 10.1016/j.foodhyd.2016.12.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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