期刊
FOOD CHEMISTRY
卷 108, 期 1, 页码 40-48出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2007.10.028
关键词
Agave tequilana; tequila; fructans; inulin; hydrolysis; cooking process
In traditional tequila production, the heads of Agave tequilana Weber var. azul are cooked in brick ovens to hydrolyze the fructan content and release fermentable sugars. The juice generated during cooking (known as cooking honey) was collected periodically in a tequila distillery and characterized to study the efficiency of fructan hydrolysis. The complex structure of fructans from A. tequilana was confirmed. The generation of 5-(hydroxymethyl)-furfural, an increase in absorbance and degrees Brix, and a decrease in pH and apparent average degree of polymerization of fructans during cooking were observed. The conversion of fructans in the flowing honey increased gradually from 20% at the onset of cooking to 98% after 25.5 h, where fructose represented more than 80% of the total carbohydrates. The proportion of non-hydrolyzed fructans in the cooking honey collected before this time resulted in a total ethanol loss of 6% in the tequila distillery investigated. (C) 2007 Published by Elsevier Ltd.
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