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Onsaard W, Kate-Ngam S, Onsaard E. Physicochemical and antioxidant properties of rice bran protein hydrolysates obtained from different proteases. JOURNAL OF FOOD MEASUREMENT AND CHARACTERIZATION 2023. [DOI: 10.1007/s11694-022-01796-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Zhou L, Zhang M, Cheng J, Wang Z, Guo Z, Li B. Raman Spectroscopy investigate structural change of rice bran protein induced by three oxidants. CYTA - JOURNAL OF FOOD 2022. [DOI: 10.1080/19476337.2022.2107705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Affiliation(s)
- Linyi Zhou
- College of Food Science, Beijing Technology and Business University, Beijing, China
- China-Canada Joint Lab of Food Nutrition and Health, Beijing Technology and Business University, Beijing, China
| | - Min Zhang
- College of Food Science, Beijing Technology and Business University, Beijing, China
| | - Jieyi Cheng
- College of Food Science, Beijing Technology and Business University, Beijing, China
| | - Zhongjiang Wang
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Zengwang Guo
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
| | - Bailiang Li
- College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang Province, China
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Wang YR, Wang SL, Luo RM. Evaluation of key aroma compounds and protein secondary structure in the roasted Tan mutton during the traditional charcoal process. Front Nutr 2022; 9:1003126. [PMID: 36330139 PMCID: PMC9622931 DOI: 10.3389/fnut.2022.1003126] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 09/20/2022] [Indexed: 09/11/2023] Open
Abstract
The traditional charcoal technique was used to determine the changes in the key aroma compounds of Tan mutton during the roasting process. The results showed that the samples at the different roasting time were distinguished using GC-MS in combination with PLS-DA. A total of 26 volatile compounds were identified, among which 14 compounds, including (E)-2-octenal, 1-heptanol, hexanal, 1-hexanol, heptanal, 1-octen-3-ol, 1-pentanol, (E)-2-nonenal, octanal, 2-undecenal, nonanal, pentanal, 2-pentylfuran and 2-methypyrazine, were confirmed as key aroma compounds through the odor activity values (OAV) and aroma recombination experiments. The OAV and contribution rate of the 14 key aroma compounds were maintained at high levels, and nonanal had the highest OAV (322.34) and contribution rate (27.74%) in the samples after roasting for 10 min. The content of α-helix significantly decreased (P < 0.05), while the β-sheet content significantly increased (P < 0.05) during the roasting process. The content of random coils significantly increased in the samples roasted for 0-8 min (P < 0.05), and then no obvious change was observed. At the same time, β-turn content had no obvious change. Correlation analysis showed that the 14 key aroma compounds were all positively correlated with the content of α-helix and negatively correlated with the contents of β-sheet and random coil, and also positively correlated with the content of β-turn, except hexanal and 2-methypyrazine. The results are helpful to promoting the industrialization of roasted Tan mutton.
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Affiliation(s)
- Yong-Rui Wang
- College of Agriculture, Ningxia University, Yinchuan, China
| | - Song-Lei Wang
- College of Food and Wine, Ningxia University, Yinchuan, China
| | - Rui-Ming Luo
- College of Food and Wine, Ningxia University, Yinchuan, China
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Effects of Cysteine on Physicochemical Properties of High-Moisture Extrudates Prepared from Plant Protein. Foods 2022; 11:foods11193109. [PMID: 36230185 PMCID: PMC9564089 DOI: 10.3390/foods11193109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/07/2022] [Accepted: 10/01/2022] [Indexed: 11/16/2022] Open
Abstract
The effects of cysteine addition (0%, 0.05%, 0.10%, 0.15%, 0.20%, 0.25%) on the physicochemical properties of plant-based extrudates by high-moisture extrusion were investigated. The texturization degree, rheological properties, hardness, springiness and chewiness of the extrudates significantly improved with the addition of cysteine (<0.15%). Analysis of the microstructure showed that the addition of cysteine (<0.15%) improved the formation of the fiber structure in the extrudates. Cysteine (<0.15%) promoted the formation of new disulfide bonds and non-covalent bonds by changing the disulfide bonds of protein molecules and enhanced the cross-linking degree between proteins. However, the excessive addition of cysteine (>0.15%) had a negative impact on the formation of fiber structure. Analysis of secondary structure suggested that the ordered β-sheet structures gradually converted to the disordered β-turn and random coil structures with the addition of cysteine (>0.15%). In addition, analysis of odor properties with the addition of cysteine using an electronic nose showed the difference in volatile components of the extrudates mainly existed in halides, hydrocarbons, sulfides and amines. On the whole, the addition of cysteine could improve the quality of plant-based extrudates.
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A Narrative Review on Rice Proteins: Current Scenario and Food Industrial Application. Polymers (Basel) 2022; 14:polym14153003. [PMID: 35893967 PMCID: PMC9370113 DOI: 10.3390/polym14153003] [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: 06/20/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 12/10/2022] Open
Abstract
Rice, Oryza sativa, is the major staple food that provides a larger share of dietary energy for more of the population than other cereal crops. Moreover, rice has a significant amount of protein including four different fractions such as prolamin, glutelin, globulin, and albumin with different solubility characteristics. However, these proteins exhibit a higher amino acid profile, so they are nutritionally important and possess several functional properties. Compared with many other cereal grains, rice protein is hypoallergic due to the absence of gluten, and therefore it is used to formulate food for infants and gluten-allergic people. Furthermore, the availability makes rice an easily accessible protein source and it exhibits several activities in the human body which discernibly affect total health. Because of these advantages, food industries are currently focusing on the effective application of rice protein as an alternative to animal-based and gluten-containing protein by overcoming limiting factors, such as poor solubility. Hence, it is important to gain an in-depth understanding of the rice protein to expand its application so, the underlined concept of this review is to give a current summary of rice protein, a detailed discussion of the chemistry of rice protein, and extraction techniques, and its functional properties. Furthermore, the impact of rice protein on human health and the current application of rice protein is also mentioned.
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Effect of Peroxyl Radical-Induced Oxidation on Functional and Structural Characteristics of Walnut Protein Isolates Revealed by High-Resolution Mass Spectrometry. Foods 2022; 11:foods11030385. [PMID: 35159534 PMCID: PMC8834345 DOI: 10.3390/foods11030385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 01/19/2022] [Accepted: 01/24/2022] [Indexed: 12/03/2022] Open
Abstract
The present study aims to investigate the structural and functional properties of oxidated walnut protein isolates (WPI) by 2,2′-azobis (2-amidinopropane) dihydrochloride (AAPH). The oxidation degree, changes in structural characteristics, processing properties, and protein modifications of WPI were measured. The results showed that oxidation significantly induced structural changes, mainly reflected by the increasing carbonyl content, and decreasing sulfhydryl and free amino groups. Moreover, the secondary structure of WPI was altered in response to oxidation, and large aggregates formed through disulfide cross-linking and hydrophobic interactions. Almost all the property indicators were significantly decreased by oxidation except the foaming property and water/oil holding capacity. Mass spectrometry analysis showed that 16 different modifications occurred in amino acid side chains, and most of the protein groups with higher numbers of modifications were found to be associated with allergies, which was further confirmed by the reduction in antigenicity of the major allergen (Jug r 1) in WPI. Meanwhile, we used oxidation-related proteins for gene ontology (GO) enrichment analyses, and the results indicated that 115, 204 and 59 GO terms were enriched in terms of biological process, molecular function, and cellular component, respectively. In conclusion, oxidation altered the groups and conformation of WPI, which in turn caused modification in the functional properties correspondingly. These findings might provide a reference for processing and storage of walnut protein foods.
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Xiong YL, Guo A. Animal and Plant Protein Oxidation: Chemical and Functional Property Significance. Foods 2020; 10:E40. [PMID: 33375649 PMCID: PMC7824645 DOI: 10.3390/foods10010040] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 12/29/2022] Open
Abstract
Protein oxidation, a phenomenon that was not well recognized previously but now better understood, is a complex chemical process occurring ubiquitously in food systems and can be induced by processing treatments as well. While early research concentrated on muscle protein oxidation, later investigations included plant, milk, and egg proteins. The process of protein oxidation involves both radicals and nonradicals, and amino acid side chain groups are usually the site of initial oxidant attack which generates protein carbonyls, disulfide, dityrosine, and protein radicals. The ensuing alteration of protein conformational structures and formation of protein polymers and aggregates can result in significant changes in solubility and functionality, such as gelation, emulsification, foaming, and water-holding. Oxidant dose-dependent effects have been widely reported, i.e., mild-to-moderate oxidation may enhance the functionality while strong oxidation leads to insolubilization and functionality losses. Therefore, controlling the extent of protein oxidation in both animal and plant protein foods through oxidative and antioxidative strategies has been of wide interest in model system as well in in situ studies. This review presents a historical perspective of food protein oxidation research and provides an inclusive discussion of the impact of chemical and enzymatic oxidation on functional properties of meat, legume, cereal, dairy, and egg proteins based on the literature reports published in recent decades.
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Affiliation(s)
- Youling L. Xiong
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY 40546, USA;
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Cuevas MS, Capellini MC, Rodrigues CEC, Meirelles AJA. Preservation of minor components and deacidification of rice bran oil using strong anionic resin. J FOOD PROCESS PRES 2020. [DOI: 10.1111/jfpp.14722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Maitê S. Cuevas
- EXTRAE, Departamento de Engenharia de Alimentos (DEA‐FEA) Universidade de Campinas (UNICAMP) Campinas Brazil
- LES, Departamento de Engenharia de Alimentos (ZEA‐FZEA) Universidade de Sao Paulo (USP) Pirassununga Brazil
| | - Maria Carolina Capellini
- LES, Departamento de Engenharia de Alimentos (ZEA‐FZEA) Universidade de Sao Paulo (USP) Pirassununga Brazil
| | | | - Antonio J. A. Meirelles
- EXTRAE, Departamento de Engenharia de Alimentos (DEA‐FEA) Universidade de Campinas (UNICAMP) Campinas Brazil
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Pooja K, Rani S, Prakash B. In silicoapproaches towards the exploration of rice bran proteins-derived angiotensin-I-converting enzyme inhibitory peptides. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2017. [DOI: 10.1080/10942912.2017.1368552] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Km Pooja
- Department of Botany, Chaudhary Charan Singh University, Meerut, Uttar Pradesh, India
| | - Sapna Rani
- Dairy Microbiology Division, ICAR-National Dairy Research Institute, Karnal, Haryana, India
| | - Bhanu Prakash
- Department of Botany, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India
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