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Relationship between Kolbach index and other quality parameters of wheat malt

机译：麦芽的柯尔巴赫指数与其他品质参数的关系

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摘要

In order to determine suitable Kolbach indices in wheat malting, the relationships between the Kolbach index and other quality parameters in wheat malt were studied. Eight white wheat malts with different Kolbach indices (31.4,33.1,37.0,37.6,39.5,40.7, 42.8 and 45.5%) from the same wheat variety were prepared. The increase ratio of the ALSP (albumins and other soluble proteins) and the decrease ratio of the glutenins were found to have a significant positive correlation with the Kolbach index, and the corresponding r-values were 0.883 and 0.975 (p< 0.01). The ALSP of the wheat malts had a positive correlation with chromaticity, extract, free amino nitrogen (FAN), viscosity, acidity, xylan glycosidase activity, endo-β-1,4-xylanase activity and malting loss (p<0.05). When the Kolbach indices were 31.4, 33.1, 37.0, 37.6 and 39.5%, there was a positive correlation between the soluble xylan and the viscosity, and the r-value was 0.888 (p < 0.05). Comparing the malts, it could be concluded that, for this particular wheat variety, when the Kolbach index was 39.5%, the wheat malts exhibited the best characteristics; the extract was 81.98%, the FAN content was 166.03 mg per l00mg, the saccharifying power was 496.72 WK, the viscosity was 1.61 cP, and the saccharification time was 6 min.
机译：为了确定麦芽制麦中合适的柯尔巴赫指数，研究了麦芽中柯尔巴赫指数与其他品质参数之间的关系。制备了八种来自同一小麦品种的不同Kolbach指数（31.4、33.1、37.0、37.6、39.5、40.7、42.8和45.5％）的白麦芽。发现ALSP（白蛋白和其他可溶性蛋白）的增加比率和谷蛋白的减少比率与Kolbach指数呈显着正相关，相应的r值分别为0.883和0.975（p <0.01）。小麦麦芽的ALSP与色度，提取物，游离氨基氮（FAN），粘度，酸度，木聚糖糖苷酶活性，内切β-1,4-木聚糖酶活性和麦芽损失呈正相关（p <0.05）。当Kolbach指数为31.4、33.1、37.0、37.6和39.5％时，可溶性木聚糖与粘度之间呈正相关，r值为0.888（p <0.05）。比较麦芽，可以得出结论，对于这种特殊的小麦品种，当科尔巴赫指数为39.5％时，小麦麦芽表现出最好的特性。提取物为81.98％，FAN含量为166.03mg / 100mg，糖化能力为496.72WK，粘度为1.61cP，糖化时间为6min。

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  • 来源
    《Journal of the Institute of Brewing》 |2012年第1期|p.57-62|共6页
  • 作者

    Y. Jin; J. Du; K. Zhang; L. Xie; P. Li;

  • 作者单位

    College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271000, People's Republic of China;

    College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271000, People's Republic of China,Tai'an Tai'shan Beer Co., Tai'an 271000, People's Republic of China,College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271000, People's Republic of China;

    Tai'an Tai'shan Beer Co., Tai'an 271000, People's Republic of China;

    College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271000, People's Republic of China;

    College of Food Science and Engineering, Shandong Agricultural University, Tai'an 271000, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    endo-β-1; 4-xylanase; kolbach index; viscosity; wheat malts; xylan glycosidase;

    机译：β-内切酶;4-木聚糖酶;柯尔巴赫指数粘度小麦麦芽;木聚糖糖苷酶;

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