Determination of antifungal volatile organic compounds of upland rice vinegar and their inhibition effects on Aspergillus flavus in dried chili pepper  

作　　者：Ruttipron Pothimon Warawut Krusong Pawinee Daetae Sumate Tantratian Maria Gullo 

机构地区：[1]Division of Fermentation Technology,School of Food Industry,King Mongkut’s Institute of Technology,Ladkrabang,Bangkok,10520,Thailand [2]Department of Food Technology,Faculty of Science,Chulalongkorn University,Bangkok,10330,Thailand [3]Department of Life Sciences,University of Modena and Reggio Emilia,Italy

出　　处：《Food Bioscience》2022年第2期308-314,共7页食品生物科学（英文）

基　　金：The authors would like to give our deep appreciation to the King Mongkut’s Institute of Technology Ladkrabang Research Fund(KREF116101),Thailand,for the financial support of the study.In addition,the authors are especially grateful to Professor Anthony Keith Thompson,a visiting professor at School of Food Industry,King Mongkut’s Institute of Technology Ladkrabang,formally Professor at Cranfield University,UK for his valuable comment and edit the manuscript.

摘　　要：Determination of volatile organic components(VOC)produced in high acid upland rice vinegar was conducted using GC-MS.Acetic acid and ethyl acetate at 9.11%and 2.69%(v/v),respectively,were major VOC found in the vinegar while the others were isobutyl acetate,isobutyl alcohol,isoamyl acetate,isoamyl alcohol,phenethyl acetate and phenethyl alcohol.Subsequently,vinegar and VOC were tested,in vitro,for their inhibition on conidia germination of 10^(3) conidia/mL of Aspergillus flavus.The exposure with 10%(v/v)of vapor-phase vinegar and pure acetic acid completely inhibited the germination of conidia with 30 min exposure,while VOC mixture of 9.11%(v/v)acetic acid,0.08%(v/v)isoamyl alcohol,0.45%(v/v)phenethyl alcohol and 0.01%(v/v)isobutyl alcohol with 45 min exposure could achieve the same target.Then,vinegar vapor was tested on the inhibition of conidia germination and aflatoxin production of A.flavus during 90 d subsequent storage of dried chili pepper.Complete inhibition of conidia germination and aflatoxin production were achieved with the 40 min exposure of 1.04±0.03 mmol/L of vaporized vinegar.Our results showed that fumigation of upland rice vinegar containing antifungal VOC is a simple and an economical method for commercial preservation of dried chili pepper.Upland rice vinegar is a novel bio-fumigant for prevention of mycotoxin production in dried food and feed products during storage.

关 键 词：Acetic acid Aspergillus flavus Volatile organic compounds Acetification process 

分 类 号：O62[理学—有机化学]