Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment

We carried out limited enzymatic hydrolysis with trypsin on rice bran protein (RBP) pretreated by high hydrostatic pressure (HHP) in this study. The effects of the degree of hydrolysis (DH) on the structural and emulsifying properties were investigated. The results indicated that the molecular struc...

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Main Authors: Shirang Wang, Zhen Hua, Tengyu Wang, Guoping Yu, Yu Sun
Format: Article
Language:English
Published: MDPI AG 2025-01-01
Series:Foods
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Online Access:https://www.mdpi.com/2304-8158/14/2/292
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author Shirang Wang
Zhen Hua
Tengyu Wang
Guoping Yu
Yu Sun
author_facet Shirang Wang
Zhen Hua
Tengyu Wang
Guoping Yu
Yu Sun
author_sort Shirang Wang
collection DOAJ
description We carried out limited enzymatic hydrolysis with trypsin on rice bran protein (RBP) pretreated by high hydrostatic pressure (HHP) in this study. The effects of the degree of hydrolysis (DH) on the structural and emulsifying properties were investigated. The results indicated that the molecular structure of RBP changed after limited enzymatic hydrolysis. The rice bran protein hydrolysate (RBPH, DH8) exhibited a better molecular distribution, a smaller particle size (200.4 nm), a better emulsifying activity index (31.82 m<sup>2</sup>/g), and an improved emulsifying stability index (24.69 min). RBPH emulsions with different DH (0–12) values were prepared. The interfacial properties, such as particle size, the ζ-potential, and the interfacial tension of the emulsions, were measured. Compared to the control, the interfacial properties of the RBPH emulsions were significantly improved after limited enzymatic hydrolysis. The RBPH emulsion at DH8 showed better stability with a smaller emulsion droplet size (2.31 μm), a lower ζ-potential (−25.56 mV), and a lower interfacial tension. This study can provide a theoretical basis for the application of RBP as the plant protein-based emulsifier in the beverage industry.
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publishDate 2025-01-01
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spelling doaj-art-2a8a4213d2ec49c1b7df7a265be17b542025-01-24T13:33:10ZengMDPI AGFoods2304-81582025-01-0114229210.3390/foods14020292Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure PretreatmentShirang Wang0Zhen Hua1Tengyu Wang2Guoping Yu3Yu Sun4School of Food Engineering, Harbin University, Harbin 150086, ChinaSchool of Economics and Management, Harbin University, Harbin 150086, ChinaCollege of Food Science, Northeast Agricultural University, Harbin 150030, ChinaCollege of Food Science, Northeast Agricultural University, Harbin 150030, ChinaSchool of Food Engineering, Harbin University, Harbin 150086, ChinaWe carried out limited enzymatic hydrolysis with trypsin on rice bran protein (RBP) pretreated by high hydrostatic pressure (HHP) in this study. The effects of the degree of hydrolysis (DH) on the structural and emulsifying properties were investigated. The results indicated that the molecular structure of RBP changed after limited enzymatic hydrolysis. The rice bran protein hydrolysate (RBPH, DH8) exhibited a better molecular distribution, a smaller particle size (200.4 nm), a better emulsifying activity index (31.82 m<sup>2</sup>/g), and an improved emulsifying stability index (24.69 min). RBPH emulsions with different DH (0–12) values were prepared. The interfacial properties, such as particle size, the ζ-potential, and the interfacial tension of the emulsions, were measured. Compared to the control, the interfacial properties of the RBPH emulsions were significantly improved after limited enzymatic hydrolysis. The RBPH emulsion at DH8 showed better stability with a smaller emulsion droplet size (2.31 μm), a lower ζ-potential (−25.56 mV), and a lower interfacial tension. This study can provide a theoretical basis for the application of RBP as the plant protein-based emulsifier in the beverage industry.https://www.mdpi.com/2304-8158/14/2/292rice bran proteinlimited enzymatic hydrolysisemulsifying propertiesinterfacial properties
spellingShingle Shirang Wang
Zhen Hua
Tengyu Wang
Guoping Yu
Yu Sun
Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment
Foods
rice bran protein
limited enzymatic hydrolysis
emulsifying properties
interfacial properties
title Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment
title_full Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment
title_fullStr Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment
title_full_unstemmed Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment
title_short Tailoring Structural, Emulsifying, and Interfacial Properties of Rice Bran Protein Through Limited Enzymatic Hydrolysis After High-Hydrostatic-Pressure Pretreatment
title_sort tailoring structural emulsifying and interfacial properties of rice bran protein through limited enzymatic hydrolysis after high hydrostatic pressure pretreatment
topic rice bran protein
limited enzymatic hydrolysis
emulsifying properties
interfacial properties
url https://www.mdpi.com/2304-8158/14/2/292
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