Document Detail


Screening and identification of precursor compounds of dimethyl trisulfide (DMTS) in Japanese sake.
MedLine Citation:
PMID:  19090758     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Dimethyl trisulfide (DMTS) is involved in the unpalatable aroma of stale sake, called "hineka"; however, the mechanism underlying the formation of DMTS during the storage of sake has not been elucidated. This paper investigates the precursors of DMTS in sake. An experiment using [methyl-d(3)]-methionine showed that Strecker degradation of methionine plays a minor role in the formation of DMTS. Separation of components in sake by cation exchange resin revealed that DMTS precursors are present in the acidic/neutral fraction rather than in the basic one. Purification of the DMTS precursor compounds was carried out through several chromatographic steps, measuring DMTS-producing potential as an index. High-resolution ESI-MS and 1D/2D NMR experiments enabled the identification of one of the precursor compounds as 1,2-dihydroxy-5-(methylsulfinyl)pentan-3-one.
Authors:
Atsuko Isogai; Ryoko Kanda; Yoshikazu Hiraga; Toshihide Nishimura; Hiroshi Iwata; Nami Goto-Yamamoto
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  57     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-01-07     Completed Date:  2009-02-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  189-95     Citation Subset:  IM    
Affiliation:
National Research Institute of Brewing, Higashihiroshima, Japan. isogai@nrib.go.jp
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MeSH Terms
Descriptor/Qualifier:
Alcoholic Beverages / analysis*
Japan
Magnetic Resonance Spectroscopy
Odors / analysis*
Pentanones / analysis
Spectrometry, Mass, Electrospray Ionization
Sulfides / analysis*,  chemistry*
Chemical
Reg. No./Substance:
0/1,2-dihydroxy-5-(methylsulfinyl)pentan-3-one; 0/Pentanones; 0/Sulfides; 3658-80-8/dimethyl trisulfide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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