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Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran
Rice bran is rich in proteins with high nutritional values. However, current protein extraction methods from rice bran are greatly limited by their low yield. Therefore, in this study, we aimed to develop a feasible method to extract rice bran protein (RBP) of high purity and quality. We prepared RB...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9658515/ https://www.ncbi.nlm.nih.gov/pubmed/36364045 http://dx.doi.org/10.3390/molecules27217212 |
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author | Cho, Seong-Jun Lee, Sang-Deok Han, Sung-Wook |
author_facet | Cho, Seong-Jun Lee, Sang-Deok Han, Sung-Wook |
author_sort | Cho, Seong-Jun |
collection | PubMed |
description | Rice bran is rich in proteins with high nutritional values. However, current protein extraction methods from rice bran are greatly limited by their low yield. Therefore, in this study, we aimed to develop a feasible method to extract rice bran protein (RBP) of high purity and quality. We prepared RBP using low-heat-treated defatted rice bran (LDRB) and analyzed its functional properties. The protein solubility of LDRB increased from 25.4% to 56% upon increasing the pH level and was more than double that of heat-stabilized defatted rice bran. RBP prepared from LDRB had good functional properties, comparable to those of soy proteins. The emulsifying capacities of RBP were 424 ± 14 mL/g at pH 4 and 530 ± 21 mL/g at pH 7.0. Under acidic conditions, RBP showed a better emulsifying capacity than soy proteins (262 ± 1 mL/g at pH 4). RPB showed water-binding and oil-absorption capacities of 270 ± 35 g/100 g and 268 ± 30 g/100 g, respectively. Moreover, RBP showed better foaming capacity (610% vs. 590%) and foam stability (83% vs. 4%) than soy proteins; however, it lacked gelling properties. This study demonstrated that RBP is a potential new protein source in the food industry. |
format | Online Article Text |
id | pubmed-9658515 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96585152022-11-15 Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran Cho, Seong-Jun Lee, Sang-Deok Han, Sung-Wook Molecules Article Rice bran is rich in proteins with high nutritional values. However, current protein extraction methods from rice bran are greatly limited by their low yield. Therefore, in this study, we aimed to develop a feasible method to extract rice bran protein (RBP) of high purity and quality. We prepared RBP using low-heat-treated defatted rice bran (LDRB) and analyzed its functional properties. The protein solubility of LDRB increased from 25.4% to 56% upon increasing the pH level and was more than double that of heat-stabilized defatted rice bran. RBP prepared from LDRB had good functional properties, comparable to those of soy proteins. The emulsifying capacities of RBP were 424 ± 14 mL/g at pH 4 and 530 ± 21 mL/g at pH 7.0. Under acidic conditions, RBP showed a better emulsifying capacity than soy proteins (262 ± 1 mL/g at pH 4). RPB showed water-binding and oil-absorption capacities of 270 ± 35 g/100 g and 268 ± 30 g/100 g, respectively. Moreover, RBP showed better foaming capacity (610% vs. 590%) and foam stability (83% vs. 4%) than soy proteins; however, it lacked gelling properties. This study demonstrated that RBP is a potential new protein source in the food industry. MDPI 2022-10-25 /pmc/articles/PMC9658515/ /pubmed/36364045 http://dx.doi.org/10.3390/molecules27217212 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Cho, Seong-Jun Lee, Sang-Deok Han, Sung-Wook Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran |
title | Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran |
title_full | Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran |
title_fullStr | Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran |
title_full_unstemmed | Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran |
title_short | Functional Properties of Rice Bran Proteins Extracted from Low-Heat-Treated Defatted Rice Bran |
title_sort | functional properties of rice bran proteins extracted from low-heat-treated defatted rice bran |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9658515/ https://www.ncbi.nlm.nih.gov/pubmed/36364045 http://dx.doi.org/10.3390/molecules27217212 |
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