PMID- 36845520 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230228 IS - 2590-1575 (Electronic) IS - 2590-1575 (Linking) VI - 17 DP - 2023 Mar 30 TI - Investigation of the differences in the effect of (-)-epigallocatechin gallate and proanthocyanidins on the functionality and allergenicity of soybean protein isolate. PG - 100566 LID - 10.1016/j.fochx.2023.100566 [doi] LID - 100566 AB - In this study, the differences in effects of (-)-epigallocatechin gallate (EGCG) and proanthocyanidins (PC) on the functionality and allergenicity of soybean protein isolate (SPI) were studied. SDS-PAGE demonstrated that SPI-PC conjugates exhibited more high-molecular-weight polymers (>180 kDa) than SPI-EGCG conjugates. Structural analysis showed that SPI-PC conjugates exhibited more disordered structures and protein-unfolding, improving the accessibility of PC to modify SPI, compared to SPI-EGCG conjugates. LC/MS-MS demonstrated that PC caused more modification of SPI and major soybean allergens than EGCG, resulting in a lower abundance of epitopes. The successful attachment of EGCG and PC to SPI significantly increased antioxidant capacity in conjugates. Furthermore, SPI-PC conjugates exhibited greater emulsifying activity and lower immunoglobulin E (IgE) binding capacity than SPI-EGCG conjugates, which was attributed to more disordered structure and protein-unfolding in SPI-PC conjugates. It is implied that proanthocyanidins may be promising compounds to interact with soybean proteins to produce functional and hypoallergenic foods. CI - (c) 2023 The Authors. FAU - Pi, Xiaowen AU - Pi X AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. FAU - Liu, Jiafei AU - Liu J AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. FAU - Sun, Yuxue AU - Sun Y AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. AD - Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin, Heilongjiang 150030, China. FAU - Sun, Xiaomeng AU - Sun X AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. FAU - Sun, Zhigang AU - Sun Z AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. FAU - Cheng, Jianjun AU - Cheng J AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. FAU - Guo, Mingruo AU - Guo M AD - Northeast Agricultural University, Harbin, Heilongjiang 150030, China. AD - Department of Nutrition and Food Science, College of Agriculture and Life Sciences, University of Vermont, Burlington 05405, United States. LA - eng PT - Journal Article DEP - 20230107 PL - Netherlands TA - Food Chem X JT - Food chemistry: X JID - 101751436 PMC - PMC9945447 OTO - NOTNLM OT - (-)-epigallocatechin gallate OT - Functional properties OT - IgE binding capacity OT - Proanthocyanidins OT - Soybean protein isolate COIS- The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2023/02/28 06:00 MHDA- 2023/02/28 06:01 PMCR- 2023/01/07 CRDT- 2023/02/27 05:11 PHST- 2022/08/02 00:00 [received] PHST- 2022/12/24 00:00 [revised] PHST- 2023/01/05 00:00 [accepted] PHST- 2023/02/27 05:11 [entrez] PHST- 2023/02/28 06:00 [pubmed] PHST- 2023/02/28 06:01 [medline] PHST- 2023/01/07 00:00 [pmc-release] AID - S2590-1575(23)00008-1 [pii] AID - 100566 [pii] AID - 10.1016/j.fochx.2023.100566 [doi] PST - epublish SO - Food Chem X. 2023 Jan 7;17:100566. doi: 10.1016/j.fochx.2023.100566. eCollection 2023 Mar 30.