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標題: Detection of molasses-spirit in rice-spirits from TK-8 and TCS-10 by SNIF-NMR method
作者: Hsieh, C.W.
Wang, H.J.
Chang, C.M.
Ko, W.C.
關鍵字: rice-spirit;ethyl alcohol;deuterium;SNIF-NMR;natural abundance level;nuclear-magnetic-resonance;regional origin;slovenian wines;h-2 nmr;ethanol;irms;glucose;ratios;combination
Project: Journal of Food and Drug Analysis
期刊/報告no:: Journal of Food and Drug Analysis, Volume 13, Issue 3, Page(s) 251-255.
The objective of this study was to identify the origin of edible alcohol usually added in Taiwanese rice-spirits by using deuterium nuclear magnetic resonance (SNIF-NMR method). Rice-spirits labeled TK-8, TCS-10 were made from two rice varieties, Taikeng 8 and Taichung sen 10, whereas molasses-spirit labeled MS was obtained from Taiwan Sugar Corporation. The proportion of ethanol molecules monodeuterated on the methyl site (D/H)(I) and methylene site (D/H)(II), and the ratio R between the intensities of methyl and methylene signals in deuterium spectra were significantly different among TK-8, TCS-10, and MS. Of the three indices, only (D/H), linearly (R-2 > 0.96) increased with addition of MS in both TK-8 and TCS-10. Therefore, (D/H)(I) was an index for the identification of pure rice-spirits mixed with ethanol originated from molasses.
ISSN: 1021-9498
Appears in Collections:化學工程學系所

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