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Li G, Xu J, Wang H, Jiang L, Wang H, Zhang Y, Jin H, Fan Z, Xu J, Zhao Q. Physicochemical Antioxidative and Emulsifying Properties of Soybean Protein Hydrolysates Obtained with Dissimilar Hybrid Nanoflowers. Foods 2022; 11:foods11213409. [PMID: 36360021 PMCID: PMC9653765 DOI: 10.3390/foods11213409] [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: 09/24/2022] [Revised: 10/17/2022] [Accepted: 10/25/2022] [Indexed: 11/16/2022] Open
Abstract
This study investigated the changes in the structure and properties of soybean protein after hydrolysis using two types of hybrid nanoflowers (alcalase@Cu3(PO4)2•3H2O (ACHNs) and dispase@Cu3(PO4)2•3H2O (DCHNs)) and examined the basic properties and oxidative stability of hydrolyzed soybean protein emulsions. The formations of the two hybrid nanoflowers were first determined using a scanning electron microscope, transmission electron microscope, and Fourier infrared spectroscopy. The structure and functional properties of soybean protein treated with hybrid nanoflowers were then characterized. The results indicated that the degree of hydrolysis (DH) of the ACHNs hydrolysates was higher than that of the DCHNs for an identical reaction time. Soybean protein hydrolysates treated with two hybrid nanoflowers showed different fluorescence and circular dichroism spectra. The solubility of the hydrolysates was significantly higher (p < 0.05) than that of the soybean protein (SPI) at all pH values tested (2.0−10.0)*: at the same pH value, the maximum solubility of ACHNs hydrolysates and DCHNs hydrolysates was increased by 46.2% and 42.2%, respectively. In addition, the ACHNs hydrolysates showed the highest antioxidant activity (DPPH IC50 = 0.553 ± 0.009 mg/mL, ABTS IC50 = 0.219 ± 0.019 mg/mL, and Fe2+ chelating activity IC50 = 40.947 ± 3.685 μg/mL). The emulsifying activity index of ACHNs and DCHNs hydrolysates reached its maximum after hydrolysis for 120 min at 61.38 ± 0.025 m2/g and 54.73 ± 0.75 m2/g, respectively. It was concluded that the two hydrolysates have better solubility and antioxidant properties, which provides a theoretical basis for SPI product development. More importantly, the basic properties and oxidative stability of the soybean-protein-hydrolysates oil-in-water emulsions were improved. These results show the importance of proteins hydrolyzed by hybrid nanoflowers as emulsifiers and antioxidants in the food and pharmaceutical industry.
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Affiliation(s)
- Geng Li
- College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Jingwen Xu
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Huiwen Wang
- College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Lianzhou Jiang
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Huan Wang
- College of Food Science, Northeast Agricultural University, Harbin 150030, China
| | - Yan Zhang
- Coastal Research and Extension Center, Mississippi State University, Starkville, MS 39762, USA
| | - Hua Jin
- College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
| | - Zhijun Fan
- Heilongjiang Beidahuang Green and Healthy Food Co., Ltd., Jiamusi 154007, China
| | - Jing Xu
- College of Arts and Sciences, Northeast Agricultural University, Harbin 150030, China
- Correspondence: (J.X.); (Q.Z.); Tel.: +86-13796652155 (J.X.); +86-13796653133 (Q.Z.)
| | - Qingshan Zhao
- Experimental Practice and Demonstration Center, Northeast Agricultural University, Harbin 150030, China
- Correspondence: (J.X.); (Q.Z.); Tel.: +86-13796652155 (J.X.); +86-13796653133 (Q.Z.)
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