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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.
|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.||摘要:||
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.
|Appears in Collections:||化學工程學系所|
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