PMID- 37120220 OWN - NLM STAT- MEDLINE DCOM- 20230501 LR - 20230501 IS - 1873-7145 (Electronic) IS - 0963-9969 (Linking) VI - 168 DP - 2023 Jun TI - Assessment of the effect of glycation on the allergenicity of sesame proteins. PG - 112771 LID - S0963-9969(23)00316-2 [pii] LID - 10.1016/j.foodres.2023.112771 [doi] AB - Sesame allergy is a growing concern worldwide. In this study, sesame proteins was glycated with glucose, galactose, lactose and sucrose respectively, and the allergenicity of different glycated sesame proteins were assessed by a comprehensive strategy, including simulated gastrointestinal digestion in vitro, a BALB/c mice model, a rat basophilic leukemia (RBL)-2H3 cell degranulation model and a serological experiment. Firstly, simulated gastrointestinal digestion in vitro showed that glycated sesame proteins were more easily to digest than raw sesame. Subsequently, the allergenicity of sesame proteins was assessed in vivo by detecting the allergic indexes of mice, and results showed that the levels of total immunoglobulin E (IgE) and histamine were reduced in glycated sesame proteins treated mice. Meanwhile, the Th2 cytokines (IL-4, IL-5, and IL-13) were downregulated significantly, demonstrating that sesame allergy was relieved in glycated sesame treated mice. Thirdly, the RBL-2H3 cell degranulation model results showed that the release of beta-hexosaminidase and histamine were decreased to different degrees in glycated sesame proteins treated groups. Notably, the monosaccharide glycated sesame proteins exhibited lower allergenicity both in vivo and in vitro. Furthermore, the study also analyzed the structure alteration of sesame proteins, and the results showed that the secondary structure of glycated sesame proteins were changed (the content of alpha-helix and beta-sheet were reduced), and the tertiary structure of sesame proteins after glycation modification was also changed (microenvironment around aromatic amino acids was altered). Besides, the surface hydrophobicity of glycated sesame proteins was also reduced except sucrose glycated sesame proteins. In conclusion, this study demonstrated that glycation reduced the allergenicity of sesame proteins effectively, especially glycation with monosaccharides, and the allergenicity reduction might be related to structural changes. The results will provide a new reference for developing hypoallergenic sesame products. CI - Copyright (c) 2023 Elsevier Ltd. All rights reserved. FAU - Jiang, Songsong AU - Jiang S AD - College of Tourism and Culinary Science, Yangzhou University, Yangzhou, Jiangsu 225127, China. Electronic address: 17600189209@163.com. FAU - Wang, Tao AU - Wang T AD - College of Tourism and Culinary Science, Yangzhou University, Yangzhou, Jiangsu 225127, China. FAU - Chen, Kuan AU - Chen K AD - College of Tourism and Culinary Science, Yangzhou University, Yangzhou, Jiangsu 225127, China. FAU - Wang, Hengpeng AU - Wang H AD - College of Tourism and Culinary Science, Yangzhou University, Yangzhou, Jiangsu 225127, China. FAU - Meng, Xiangren AU - Meng X AD - College of Tourism and Culinary Science, Yangzhou University, Yangzhou, Jiangsu 225127, China; Chinese Cuisine Promotion and Research Base, Yangzhou University, Yangzhou 225127, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230326 PL - Canada TA - Food Res Int JT - Food research international (Ottawa, Ont.) JID - 9210143 RN - 0 (Allergens) RN - 820484N8I3 (Histamine) SB - IM MH - Rats MH - Mice MH - Animals MH - Allergens MH - *Sesamum MH - Maillard Reaction MH - Histamine/metabolism MH - *Hypersensitivity OTO - NOTNLM OT - Allergenicity OT - Assess strategy OT - Glycation OT - Proteins OT - Sesame allergy OT - Structure COIS- Declaration of Competing Interest 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- 2023/04/30 00:42 MHDA- 2023/05/01 06:41 CRDT- 2023/04/29 20:57 PHST- 2022/10/19 00:00 [received] PHST- 2023/03/21 00:00 [revised] PHST- 2023/03/23 00:00 [accepted] PHST- 2023/05/01 06:41 [medline] PHST- 2023/04/30 00:42 [pubmed] PHST- 2023/04/29 20:57 [entrez] AID - S0963-9969(23)00316-2 [pii] AID - 10.1016/j.foodres.2023.112771 [doi] PST - ppublish SO - Food Res Int. 2023 Jun;168:112771. doi: 10.1016/j.foodres.2023.112771. Epub 2023 Mar 26.