| Apparatus used for small-scale volatile extraction from ethanol-supplemented low-salt miso and GC-MS characterization of the extracted flavors. | |
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MedLine Citation:
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PMID: 10956140 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An extraction apparatus was equipped with a nitrogen-flushing vessel to purge volatiles from a 10-g miso prepared solution at 40 degrees C, a reflux condenser to recover water, a coiled cold-trap to separate ethanol in advance, and a glass-lined stainless (GLS) trap filled with Tenax TA for flavor adsorption. Volatiles in the GLS tube were released with a thermal desorption device and condensed with a Micro-cryo trap prior to connection with GC and GC-MS for characterization. After analysis, a broad volatile profile comprising 9 categories of functional group and 97 identified compounds was achieved. As affected by ethanol supplementation for miso fermentation, most volatiles except alcohols and acetals in the low-salt products fermented with 5% NaCl and 7.5% ethanol were higher than those in the control products fermented with 9% NaCl and 0% ethanol and the high-ethanol supplemented products fermented with 5% NaCl and 15% ethanol. It reveals that supplementation of ethanol in miso at an appropriate level not only enabled a low-salt miso fermentation but also enhanced flavor formation. |
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Authors:
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K L Ku; T P Chen; R Y Chiou |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 48 ISSN: 0021-8561 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2000 Aug |
Date Detail:
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Created Date: 2000-09-25 Completed Date: 2000-09-25 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 3507-11 Citation Subset: IM |
Affiliation:
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Department of Food Science, National Chiayi University, Taiwan, Republic of China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Ethanol
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chemistry* Gas Chromatography-Mass Spectrometry Sodium Chloride Soybeans / chemistry* Volatilization |
| Chemical | |
Reg. No./Substance:
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64-17-5/Ethanol; 7647-14-5/Sodium Chloride |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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