PMID- 34627095 OWN - NLM STAT- MEDLINE DCOM- 20211124 LR - 20211124 IS - 1873-7072 (Electronic) IS - 0308-8146 (Linking) VI - 372 DP - 2022 Mar 15 TI - Studying the effects of high pressure-temperature treatment on the structure and immunoreactivity of beta-lactoglobulin using experimental and computational methods. PG - 131226 LID - S0308-8146(21)02232-9 [pii] LID - 10.1016/j.foodchem.2021.131226 [doi] AB - The effects of high hydrostatic pressure (HHP) on the conformation and immunoreactivity of bovine beta-lactoglobulin (BLG) were studied. BLG was treated under 100-600 MPa at the temperature of 20-60 degrees C. The immunoglobulin E (IgE) binding ability of BLG decreased when the pressure increased from 0.1 to 200 MPa. However, the IgE binding increased with the increase in pressure from 200 to 400 MPa, followed by a gradual decrease until a pressure of 600 MPa. The IgE binding ability continuously decreased with an increase in pressure at 60 degrees C. The conformation of HHP-treated BLG was evaluated using fluorescence spectroscopy, circular dichroism spectroscopy and molecular dynamics (MD) simulation. Increasing the temperature and pressure promoted the unfolding of BLG, causing the disappearance of some alpha-helixes and some beta-sheets. Based on ELISA analysis, it was revealed that HHP-termperature treatment altered the immunoreactivity of BLG by altering the structures and conformational states of BLG. CI - Copyright (c) 2021 Elsevier Ltd. All rights reserved. FAU - Chen, Gang AU - Chen G AD - School of Agriculture and Food Science, Zhejiang Agriculture and Forest University, 666, Wusu Street, Hangzhou 311300, Zhejiang, China; Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, 11 Fucheng Rd., 100048, China. FAU - Wu, Chenyu AU - Wu C AD - School of Agriculture and Food Science, Zhejiang Agriculture and Forest University, 666, Wusu Street, Hangzhou 311300, Zhejiang, China. FAU - Chen, Xiaojie AU - Chen X AD - School of Food science and Technology, Henan University of Technology, Zhengzhou, 100 Lianhua St., China. FAU - Yang, Zhennai AU - Yang Z AD - Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, 11 Fucheng Rd., 100048, China. FAU - Yang, Huqing AU - Yang H AD - School of Agriculture and Food Science, Zhejiang Agriculture and Forest University, 666, Wusu Street, Hangzhou 311300, Zhejiang, China. LA - eng PT - Journal Article DEP - 20210925 PL - England TA - Food Chem JT - Food chemistry JID - 7702639 RN - 0 (Lactoglobulins) RN - 37341-29-0 (Immunoglobulin E) SB - IM MH - Animals MH - Cattle MH - Enzyme-Linked Immunosorbent Assay MH - Hydrostatic Pressure MH - *Immunoglobulin E MH - *Lactoglobulins MH - Temperature OTO - NOTNLM OT - Allergenic property OT - Combinational study OT - Conformation OT - High hydrostatic pressure OT - beta-Lactoglobulin EDAT- 2021/10/10 06:00 MHDA- 2021/11/25 06:00 CRDT- 2021/10/09 20:29 PHST- 2021/04/18 00:00 [received] PHST- 2021/09/18 00:00 [revised] PHST- 2021/09/23 00:00 [accepted] PHST- 2021/10/10 06:00 [pubmed] PHST- 2021/11/25 06:00 [medline] PHST- 2021/10/09 20:29 [entrez] AID - S0308-8146(21)02232-9 [pii] AID - 10.1016/j.foodchem.2021.131226 [doi] PST - ppublish SO - Food Chem. 2022 Mar 15;372:131226. doi: 10.1016/j.foodchem.2021.131226. Epub 2021 Sep 25.