کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4753228 1416549 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Search for compounds contributing to onion-like off-flavor in beer and investigation of the cause of the flavor
ترجمه فارسی عنوان
جستجو برای ترکیبات کمک به پودر مانند پودر طعم در آبجو و بررسی علت عطر و طعم
کلمات کلیدی
آبجو، پیاز، عطر و طعم، تیول، 2-مکاپتو-3-متیل-1-بتانل، 3-مکاپتو-3-متیل-1-بتانل، هوای داغ
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
چکیده انگلیسی
Onion-like off-flavor is a highly undesirable property in beer. Although several compounds that impart onion-like odors have been identified, the individual contribution of these compounds to the onion-like off-flavor in beer is not clear. In the present study, we searched for compounds that impart an onion-like odor by gas chromatography (GC)-olfactometry. The analysis of several types of beer revealed that 2-mercapto-3-methyl-1-butanol (2M3MB) and 3-mercapto-3-methyl-1-butanol (3M3MB) were possible causative compounds. Based on the difference threshold values in beer (0.13 ng/mL for 2M3MB and 17.5 ng/mL for 3M3MB) and the quantification values of these compounds in beer samples, only 2M3MB was considered to contribute to the onion-like off-flavor in beer. A further formation factor analysis of 2M3MB revealed that 2M3MB was formed in hopped wort after fermentation, and that the concentration of 2M3MB increased following the hot aeration treatment of wort. These results suggest that preventing the hot aeration of wort is a key factor for reducing 2M3MB levels in beer. In a previous report, 3-methyl-2-buten-1-ol (3MBol) was speculated to be the precursor of 2M3MB and 3M3MB; however, the results of the present quantification analysis and wort addition tests indicate that 3MBol did not contribute to the formation of 2M3MB in the brewing process and that unknown precursors of 2M3MB originated in wort. Identifying the precursor of 2M3MB may facilitate elucidation of the mechanism of 2M3MB formation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Bioscience and Bioengineering - Volume 124, Issue 4, October 2017, Pages 419-424
نویسندگان
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