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Yu J, Ge W, Wang K, Hao W, Yang S, Xu Y, Feng T, Han P, Sun X. Crosslinking ability of hydrolyzed distarch phosphate and its stabilizing effect on rehydrated sea cucumber. Food Chem 2024; 456:139866. [PMID: 38852446 DOI: 10.1016/j.foodchem.2024.139866] [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: 03/13/2024] [Revised: 05/07/2024] [Accepted: 05/26/2024] [Indexed: 06/11/2024]
Abstract
Effective crosslinking among food constituents has the potential to enhance their overall quality. Distarch phosphate (DSP), a common food additive employed as a thickening agent, bears a pre-crosslinked oligosaccharide (PCO) moiety within its molecular structure. Once this moiety is released, its double reducing end has the potential to undergo crosslinking with amino-rich macromolecules through Maillard reaction. In this study, hydrolyzed distarch phosphate (HDSP) was synthesized, and spectroscopic analysis verified the presence of PCO within HDSP. Preliminary validation experiment showed that HDSP could crosslink chitosan to form a hydrogel and significant browning was also observed during the process. Furthermore, rehydrated sea cucumber (RSC) crosslinked with HDSP exhibited a more intact appearance, higher mechanical strength, better color profile, and increased water-holding capacity. This series of results have confirmed that HDSP is capable to crosslink amino-rich macromolecules and form more stable three-dimensional network.
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Affiliation(s)
- Jiaqi Yu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Wenhao Ge
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Kaifeng Wang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Wenhui Hao
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Shangju Yang
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Ying Xu
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China.
| | - Tingyu Feng
- Qingdao Institute of Marine Bioresources for Nutrition & Health Innovation, Ocean University of China, Qingdao 266109, China
| | - Peng Han
- Dalian Municipal central hospital, Dalian 116021, China
| | - Xun Sun
- College of Food Science and Engineering, Ocean University of China, Qingdao 266100, China.
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Chen Y, Gu J, Sun Y, Ding Y, Yang X, Lan S, Ding J, Ding Y. Insight into low methoxyl pectin enhancing thermal stability and intestinal delivery efficiency of algal oil nanoemulsions. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:8356-8367. [PMID: 38989609 DOI: 10.1002/jsfa.13670] [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: 03/05/2024] [Revised: 05/08/2024] [Accepted: 05/20/2024] [Indexed: 07/12/2024]
Abstract
BACKGROUND Algae oil has garnered widespread acclaim due as a result of its high purity of docosahexaenoic acid (DHA) and excellent safety profile. The present study aimed to develop stable nanoemulsions (NEs) systems containing DHA from algae oil through thermal sterilization by combining modified whey protein concentrate (WPC) with low methoxyl pectin (LMP), as well as to investigate the impact of LMP concentration on the thermal stability and the gastrointestinal delivery efficiency of DHA NEs. RESULTS The addition of LMP enhanced the stability of the emulsion after sterilization, at the same time as improving the protective and sustained release effects of DHA in the gastrointestinal tract. Optimal effect was achieved at a LMP concentration of 1% (10 g kg-1 sample), the stability of the emulsion after centrifugation increased by 17.21 ± 5.65% compared to the group without LMP, and the loss of DHA after sterilization decreased by only 0.92 ± 0.09%. Furthermore, the addition of 1% LMP resulted in a substantial reduction in the release of fatty acids from the NEs after gastrointestinal digestion simulation, achieving the desired sustained-release effect. However, excessive addition of 2% (20 g kg-1 sample) LMP negatively impacted all aspects of the NEs system, primarily because of the occurrence of depletion effects. CONCLUSION The construction of the LMP/WPC-NEs system is conducive to the protection of DHA in algae oil and its sustained-release in the gastrointestinal tract. The results of the present study can provide reference guidance for the application of algae oil NEs in the food field. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Yufeng Chen
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Jipeng Gu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Yi Sun
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Yicheng Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Xuan Yang
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Siqi Lan
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Jiayue Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
| | - Yuting Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, China
- Zhejiang Key Laboratory of Green, Low-carbon and Efficient Development of Marine Fishery Resources, Hangzhou, China
- Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
- Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian, China
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Gu J, Pan MH, Chiou YS, Wei S, Ding B. Enhanced stability of Pickering emulsions through co-stabilization with nanoliposomes and thermally denatured ovalbumin. Int J Biol Macromol 2024; 278:134561. [PMID: 39127283 DOI: 10.1016/j.ijbiomac.2024.134561] [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: 05/28/2024] [Revised: 07/29/2024] [Accepted: 08/05/2024] [Indexed: 08/12/2024]
Abstract
Pickering emulsions were co-stabilized by nanoliposome (NL) and thermally denatured ovalbumin (DOVA) based on the induction of OVA with strong particle characteristics through thermal denaturation. DOVA-NL particles were spherical and their sizes were mainly distributed between 50 and 100 nm. The surface tension and interfacial tension of DOVA-NL were significantly reduced, and the surface hydrophobicity, amphiphilicity and free -SH content of DOVA were enhanced after complexation with NL. The content of α-helix and β-sheet in DOVA decreased, whereas the content of β-turn and random coil increased after complexation with NL. Hydrophobic interactions, hydrogen bonding and electrostatic forces played a vital role in the interactions between NL and DOVA, leading to conformational changes in DOVA. The number of binding sites between NL and DOVA was more than one, and the interaction between NL and DOVA was exothermic and spontaneous. The emulsification index showed that DOVA-NL-stabilized Pickering emulsions (DNPE) were significantly more stable than DOVA-stabilized emulsions. DOVA-NL particles adsorbed at the oil-water interface and the droplet size of DNPE was smaller than that of DOVA-stabilized emulsions. This study suggests that it may be an effective strategy to improve the stability of Pickering emulsions through co-stabilization with NL and DOVA.
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Affiliation(s)
- Jinhui Gu
- College of Life Science, Yangtze University, Jingzhou, Hubei 434025, PR China
| | - Min-Hsiung Pan
- Institute of Food Sciences and Technology, National Taiwan University, Taipei 10617, Taiwan, ROC
| | - Yi-Shiou Chiou
- College of Pharmacy, Kaohsiung Medical University, Kaohsiung City 80708, Taiwan, ROC
| | - Shudong Wei
- College of Life Science, Yangtze University, Jingzhou, Hubei 434025, PR China
| | - Baomiao Ding
- College of Life Science, Yangtze University, Jingzhou, Hubei 434025, PR China.
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Zhang Z, Zhang M, Gao Z, Cheng Y, Yang X, Mu S, Qu K. Effect of Dynamic High-Pressure Microfluidization on the Quality of Not-from-Concentrate Cucumber Juice. Foods 2024; 13:2125. [PMID: 38998631 PMCID: PMC11241305 DOI: 10.3390/foods13132125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 06/21/2024] [Accepted: 07/01/2024] [Indexed: 07/14/2024] Open
Abstract
The effects of dynamic high-pressure microfluidization (DHPM at 400 MPa) and heat treatment (HT) on the microbial inactivation, quality parameters, and flavor components of not-from-concentrate (NFC) cucumber juice were investigated. Total aerobic bacteria, yeasts and molds were not detected in the 400 MPa-treated cucumber juice. Total phenolic content increased by 16.2% in the 400 MPa-treated cucumber juice compared to the control check (CK). The significant reduction in pulp particle size (volume peak decreasing from 100-1000 μm to 10-100 μm) and viscosity increased the stability of the cucumber juice while decreasing the fluid resistance during processing. HT decreased the ascorbic acid content by 25.9% (p < 0.05), while the decrease in ascorbic acid content was not significant after 400 MPa treatment. A total of 59 volatile aroma substances were identified by gas chromatography-ion mobility spectrometry (GC-IMS), and a variety of characteristic aroma substances (i.e., valeraldehyde, (E)-2-hexenal, (E)-2-nonenal, and (E,Z)-2,6-nonadienal, among others) were retained after treatment with 400 MPa. In this study, DHPM technology was innovatively applied to cucumber juice processing with the aim of providing a continuous non-thermal processing technology for the industrial production of cucumber juice. Our results provide a theoretical basis for the application of DHPM technology in cucumber juice production.
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Affiliation(s)
- Zhiwei Zhang
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
- Tianjin Key Laboratory of Food Biotechnology, School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China
| | - Meiyue Zhang
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
| | - Zhenhong Gao
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
| | - Yuying Cheng
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
| | - Xinyi Yang
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
| | - Shuaixue Mu
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
| | - Kunsheng Qu
- School of Biotechnology and Food Science, Tianjin University of Commerce, Tianjin 300134, China; (M.Z.); (Z.G.); (Y.C.); (X.Y.); (S.M.); (K.Q.)
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Shen J, Chen Y, Li X, Zhou X, Ding Y. Enhanced probiotic viability in innovative double-network emulsion gels: Synergistic effects of the whey protein concentrate-xanthan gum complex and κ-carrageenan. Int J Biol Macromol 2024; 270:131758. [PMID: 38714282 DOI: 10.1016/j.ijbiomac.2024.131758] [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: 02/23/2024] [Revised: 04/12/2024] [Accepted: 04/20/2024] [Indexed: 05/09/2024]
Abstract
In this study, the whey protein concentrate and xanthan gum complex obtained by specific pH treatment, along with κ-carrageenan (KC), were used to encapsulate Lactobacillus acidophilus JYLA-191 in an emulsion gel system. The effects of crosslinking and KC concentration on the visual characteristics, stability, mechanical properties, and formation mechanism of emulsion gels were investigated. The results of optical imaging, particle size distribution, and rheology exhibited that with the addition of crosslinking agents, denser and more homogeneous emulsion gels were formed, along with a relative decrease in the droplet size and a gradual increase in viscosity. Especially when the concentration of citric acid (CA) was 0.09 wt%, KC was 0.8 wt%, and K+ was present in the system, the double-network emulsion gel was stable at high temperatures and in freezing environments, and the swelling ratio was the lowest (9.41%). Gastrointestinal tract digestive treatments and pasteurization revealed that the probiotics encapsulated in the double-network emulsion gel had a higher survival rate, which was attributed to the synergistic cross-linking of CA and K+ biopolymers to construct the emulsion gels. Overall, this study highlights the potential of emulsion gels to maintain probiotic vitality and provides valuable insights for developing inventive functional foods.
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Affiliation(s)
- Jie Shen
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, Zhejiang, China; National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, Zhejiang, China
| | - Yufeng Chen
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, Zhejiang, China; National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, Zhejiang, China
| | - Xuepeng Li
- College of Food Science and Technology, Bohai University, Jinzhou 121013, Liaoning, China
| | - Xuxia Zhou
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, Zhejiang, China; National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, Zhejiang, China; Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, Liaoning, China.
| | - Yuting Ding
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, Zhejiang, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, Hangzhou 310014, Zhejiang, China; National R&D Branch Center for Pelagic Aquatic Products Processing (Hangzhou), Hangzhou 310014, Zhejiang, China; Collaborative Innovation Center of Seafood Deep Processing, Dalian Polytechnic University, Dalian 116034, Liaoning, China.
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Du L, Li S, Meng Z. Fat analogue emulsions stabilized by peanut protein microgel particles: microscale and nanoscale structure and stabilization process analysis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:3788-3797. [PMID: 38270495 DOI: 10.1002/jsfa.13264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 12/27/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Biopolymer-based microgels are being regarded increasingly as promising building blocks in food applications. This study aimed to clarify the evolution process of the network for fat analogue emulsions stabilized by peanut protein isolate (PPI) microgel particles. It also investigated the interfacial structure and characteristics of emulsions (50% oil phase, w/w) stabilized by microgels under different pH conditions. RESULTS There was an increasing interfacial adsorption capacity for PPI microgels over time (from 85.26% to the maximum of 89.78% at 24 h of storage) due to the aggregation of microgels around droplets and the development of cross-linking microgel chains between adjacent interfaces. The increased β-sheet content (from 35.51% to 41.12%) of adsorbed microgels indicated unfolding and the enhanced aggregation of microgels, which led to stronger droplet interaction. The network evolution observed with different microscopes clarified the transition to a self-supporting emulsion. The uneven adsorption of large microgel aggregates at the oil-water interface promoted larger and deformed droplets, so more fat-like medium internal phase emulsion stabilized by PPI microgel could be obtained by adjusting the microgel pH to 4.5. The interfacial membranes observed by scanning electron microscopy were thicker and coarser at pH 3.0 and 4.5 than those at pH 7.0 and 9.0. The adsorption of PPI microgel aggregates enhanced the structural strength and improved emulsion stability. CONCLUSION This work could form a basis for further studies relating physical properties to the design of plant protein-based fat analogues. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Liyang Du
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Shaoyang Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Zong Meng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, China
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7
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Zhao S, Zhao Y, Liu H, Chen Q, Sun H, Kong B. Combined effects of high-intensity ultrasound treatment and hydrogen peroxide addition on the thermal stabilities of myofibrillar protein emulsions at low ionic strengths. ULTRASONICS SONOCHEMISTRY 2024; 104:106841. [PMID: 38442572 PMCID: PMC10924124 DOI: 10.1016/j.ultsonch.2024.106841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/21/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
In this study, the effects of high-intensity ultrasound (HIU) treatment combined with hydrogen peroxide (H2O2) addition on the thermal stability of myofibrillar protein (MP)-stabilized emulsions in low-salt conditions were investigated. Results showed that compared to using either HIU or H2O2 treatment alone, HIU treatment combined with H2O2 was most effective in enhancing the physical stability of emulsions. Moreover, the emulsion stabilized by MPs co-treated with HIU and H2O2 exhibited the most uniform distribution, highest absolute zeta potential, and optimal rheological properties upon heating. This combination effect during heating was caused by the inhibition of disulfide bond cross-linking of myosin heads by H2O2 and the dissociation of filamentous myosin structures using the HIU treatment. In addition, the results of oxidative stability analysis indicated that the addition of H2O2 increased the content of oxidation products; however, the overall influence on the oxidative stability of emulsions was not significant. In conclusion, the combination of HIU and H2O2 treatment is a promising approach to suppress heat-induced MP aggregation and improve the thermal stability of corresponding emulsions.
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Affiliation(s)
- Siqi Zhao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Yubo Zhao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Haotian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Qian Chen
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Hongbo Sun
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Baohua Kong
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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Lu S, Xiong W, Yao Y, Zhang J, Wang L. Investigating the physicochemical properties and air-water interface adsorption behavior of transglutaminase-crosslinking rapeseed protein isolate. Food Res Int 2023; 174:113505. [PMID: 37986500 DOI: 10.1016/j.foodres.2023.113505] [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: 07/28/2023] [Revised: 09/14/2023] [Accepted: 09/22/2023] [Indexed: 11/22/2023]
Abstract
Improving the technical functionality to adapt to the application of complex food systems is an important challenge for the development of plant protein ingredients. Herein, the correlation between the physicochemical properties and interfacial adsorption behavior of rapeseed protein isolate (RPI) at the air-water interface after transglutaminase (TG) treatment was investigated. The results of cross-linking degree, Fourier transform infrared spectroscopy (FTIR) and sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) showed that the TG enzyme was able to catalyse cross-linking between lysine and glutamine residues of RPI. The foaming capacity of RPI was enhanced from 120 % to 150 % after TG cross-linking 5 h, whereas the average size (210-219 nm) of the RPI determined by dynamic light scattering did not change significantly. Besides, the hydrophobicity tended to increase overall under the enzyme treatment, while the surface electrostatic potential decreased. The former indicates the unfolding of the protein and reduces the kinetic barriers to protein adsorption at the air-water interface, with a consequent increase in disulfide bonding and surface pressure. Furthermore, as the enzyme treatment time increased, a significant increase in protein content of foam by 33.86 %. These findings provide novel insight into the foaming mechanism of TG cross-linking RPI.
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Affiliation(s)
- Shanshan Lu
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China
| | - Wenfei Xiong
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China
| | - Yijun Yao
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China
| | - Jing Zhang
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China
| | - Lifeng Wang
- College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, Jiangsu, China.
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Chen J, He J, Zhao Z, Li X, Tang J, Liu Q, Wang H. Effect of heat treatment on the physical stability, interfacial composition and protein-lipid co-oxidation of whey protein isolate-stabilised O/W emulsions. Food Res Int 2023; 172:113126. [PMID: 37689891 DOI: 10.1016/j.foodres.2023.113126] [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: 03/10/2023] [Revised: 06/05/2023] [Accepted: 06/09/2023] [Indexed: 09/11/2023]
Abstract
This work aimed to investigate the effects of heat treatments at different temperatures (60, 70 and 90 °C, expressed as HT-60, HT-70 and HT-90) on interfacial composition and protein-lipid co-oxidation in whey protein isolate (WPI)-stabilised O/W emulsions during storage. Compared with control group, all heated emulsions exhibited weaker physical stability over 10 days of storage, which verified by the increased droplet size, as well as decreased adsorbed protein levels and absolute ζ-potential values. Moreover, proteins recovered from the HT-90 emulsion showed the highest fluorescence intensity and red-shift of the maximum emission wavelength, indicating partial unfolding of the protein structure. Meanwhile, severe changes in protein structure were also observed in the HT-70 and HT-90 emulsions, which clearly verified by the degradation of bovine serum albumin, α-lactalbumin and β-lactoglobulin. Furthermore, HT-70 and HT-90 emulsions showed lower levels of lipid hydroperoxides and thiobarbituric acid reactive substances. In contrast, the recovered proteins were subject to severe oxidative stress as indicated by carbonyl and N'-formyl-L-kynurenine. Hierarchical cluster and correlation analysis implied that the process of protein-lipid co-oxidation is inevitable, but it can be retarded by heat treatment. Our results clearly revealed the relevance among heat treatment, interfacial adsorption property, and the protein-lipid co-oxidation of O/W emulsions.
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Affiliation(s)
- Jiaxin Chen
- College of Food and Bioengineering, Xihua University, Chengdu, Sichuan 610039, China; College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Junjie He
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Zihan Zhao
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Xin Li
- Sharable Platform of Large-Scale Instruments & Equipments, Northeast Agricultural University, Harbin, Heilongjiang 150030, China
| | - Jie Tang
- College of Food and Bioengineering, Xihua University, Chengdu, Sichuan 610039, China
| | - Qian Liu
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
| | - Hui Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China.
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Zhao S, Wang Z, Wang X, Kong B, Liu Q, Xia X, Liu H. Characterization of Nanoemulsions Stabilized with Different Emulsifiers and Their Encapsulation Efficiency for Oregano Essential Oil: Tween 80, Soybean Protein Isolate, Tea Saponin, and Soy Lecithin. Foods 2023; 12:3183. [PMID: 37685117 PMCID: PMC10487023 DOI: 10.3390/foods12173183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/14/2023] [Accepted: 08/18/2023] [Indexed: 09/10/2023] Open
Abstract
The use of the appropriate emulsifier is essential for forming a stable nanoemulsion delivery system that can maintain the sustained release of its contents. Health concerns have prompted the search for natural biopolymers to replace traditional synthetic substances as emulsifiers. In this study, an oregano essential oil (OEO) nanoemulsion-embedding system was created using soybean protein isolate (SPI), tea saponin (TS), and soy lecithin (SL) as natural emulsifiers and then compared to a system created using a synthetic emulsifier (Tween 80). The results showed that 4% Tween 80, 1% SPI, 2% TS, and 4% SL were the optimal conditions. Subsequently, the influence of emulsifier type on nanoemulsion stability was evaluated. The results revealed that among all the nanoemulsions, the TS nanoemulsion exhibited excellent centrifugal stability, storage stability, and oxidative stability and maintained high stability and encapsulation efficiency, even under relatively extreme environmental conditions. The good stability of the TS nanoemulsion may be due to the strong electrostatic repulsion generated by TS molecules, which contain hydroxyl groups, sapogenins, and saccharides in their structures. Overall, the natural emulsifiers used in our study can form homogeneous nanoemulsions, but their effectiveness and stability differ considerably.
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Affiliation(s)
| | | | | | | | | | | | - Haotian Liu
- College of Food Science, Northeast Agricultural University, Harbin 150030, China; (S.Z.); (Z.W.); (X.W.); (B.K.); (Q.L.); (X.X.)
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