Considerations—The Fermentation of High-Gravity Wort1
作者:
WittPaul R.,
BlythePhilip,
期刊:
Journal of the American Society of Brewing Chemists
(Taylor Available online 1976)
卷期:
Volume 34,
issue 2
页码: 76-79
ISSN:0361-0470
年代: 1976
DOI:10.1080/03610470.1976.12006191
出版商: Taylor&Francis
关键词: Agitated fermentation;Barley syrup;Corn sirup;Ethyl acetate;Fatly acids
数据来源: Taylor
摘要:
Corn and barley syrups manufactured in different ways varied in fermentability. Tendencies observed with conventional or low-gravity worts were usually accentuated at starter solids of 18°P and greater. Carbohydrate composition appeared to be a factor inasmuch as decreased fermentability was observed when high-gravity wort glucose was in excess of 10% (of the total carbohydrate). Agitation and limited aeration in the early stage of fermentation each increased rate and degree of attenuation of wort containing a specific barley syrup. However, the combination of the two maximized the effect. High-gravity worts produced beers with normal ethyl acetate contents. While not tabulated, levels of higher alcohols were also normal. Examination of pitching rate suggested that about 1.4×107cells ml of high-gravity wort gave best results.
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