title: Comparative volatile profiles in soy sauce according to inoculated microorganisms.
abstract: We compared the volatile profiles in soy sauce according to inoculation with Tetragenococcus halophilus and/or Zygosaccharomyces rouxii. Totals of 107 and 81 volatiles were respectively identified by using solid-phase microextraction and solvent extraction. The various volatile compounds identified included acids, aldehydes, esters, ketones, furans and furan derivatives, and phenols. The major volatiles in the samples treated with T. halophilus were acetic acid, formic acid, benzaldehyde, methyl acetate, ethyl 2-hydroxypropanoate, 2-hydroxy-3-methyl-2-cyclopenten-1-one, and 4-hydroxy-3-methoxybenzaldehyde, while those in the samples inoculated with Z. rouxii were mainly ethanol, acetaldehyde, ethyl propanoate, 2/3-methylbutanol, 1-butanol, 2-phenylethanol, ethyl 2-methylpropanoate, and 4-hydroxy-2-ethyl-5-methyl-3(2H)-furanone. The results indicate that T. halophilus produced significant acid compounds and could affect the Z. rouxii activity, supporting the notion that yeasts and lactic acid bacteria respectively have different metabolic pathways of alcoholic fermentation and lactic acid fermentation, and produce different dominant volatile compounds in soy sauce.
authors.affiliation: Department of Food Science and Engineering, Ewha Womans University.
authors.forename: Kyung Eun
authors.initials: KE
authors.lastname: Lee
authors.forename: Sang Mi
authors.initials: SM
authors.lastname: Lee
authors.forename: Yong Ho
authors.initials: YH
authors.lastname: Choi
authors.forename: Byung Serk
authors.initials: BS
authors.lastname: Hurh
authors.forename: Young-Suk
authors.initials: YS
authors.lastname: Kim
mesh_terms: D000438:Alcohols / Q000032:analysis / Q000378:metabolism; D000447:Aldehydes / Q000032:analysis / Q000378:metabolism; D002264:Carboxylic Acids / Q000032:analysis / Q000378:metabolism; D056569:Enterococcaceae / Q000378:metabolism*; D005285:Fermentation; D005663:Furans / Q000032:analysis / Q000378:metabolism; D053858:Metabolic Networks and Pathways; D010636:Phenols / Q000032:analysis / Q000378:metabolism; D052617:Solid Phase Microextraction; D012997:Solvents; D045730:Soy Foods / Q000032:analysis / Q000382:microbiology*; D013045:Species Specificity; D013729:Terpenes / Q000032:analysis / Q000378:metabolism; D055549:Volatile Organic Compounds / Q000032:analysis* / Q000378:metabolism; D020068:Zygosaccharomyces / Q000378:metabolism*
chemical_list: D000438:Alcohols; D000447:Aldehydes; D002264:Carboxylic Acids; D005663:Furans; D010636:Phenols; D012997:Solvents; D013729:Terpenes; D055549:Volatile Organic Compounds