Hassani Ahmed, Zarnkow Martin, Becker Thomas
Lehrstuhl für Brau- und Getränketechnologie, Technische Universität München, Germany.
Lehrstuhl für Brau- und Getränketechnologie, Technische Universität München, Germany
Food Sci Technol Int. 2014 Sep;20(6):453-63. doi: 10.1177/1082013213490710. Epub 2013 Jun 10.
There has been recently increased interest in sorghum to substitute the gluten containing cereals in the diet of people suffering from celiac disease. The response surface methodology was used to determine the influence of malting parameters (degree of steeping, germination temperature and time) on sorghum (Sorghum bicolor (L.) Moench). Each parameter was varied at three levels. Malting attributes, considered important to produce high quality malt for the production of lactic acid fermented beverages, were analyzed. The optimized conditions were: degree of steeping 41%, germination temperature 27℃ after 7 days of germination. Under these conditions, the following values of the studied attributes can be obtained: α-amylase 139 U/g, β-amylase 60 U/g, extract 83.8%, free amino nitrogen 117.8 mg/100 g, Kolbach index 26.6%, water-extractable arabinoxylan 0.3 g/L and vitamin B2 114.9 µg/L. Among the tested parameters, the germination time had the highest effect on malting attributes. Although the activity of amylolytic enzymes α- and β-amylase were low, the value of extract was high and comparable to that of barley malt. The obtained results showed that sorghum malt is a promising raw material for the production of lactic acid fermented beverages.
最近,高粱在患有乳糜泻的人群饮食中替代含麸质谷物方面受到了更多关注。采用响应面法来确定制麦参数(浸渍度、发芽温度和时间)对高粱(双色高粱(L.)Moench)的影响。每个参数在三个水平上变化。分析了对生产用于乳酸发酵饮料的高质量麦芽很重要的制麦特性。优化条件为:浸渍度41%,发芽7天后发芽温度27℃。在这些条件下,可获得以下所研究特性的值:α-淀粉酶139 U/g,β-淀粉酶60 U/g,浸出物83.8%,游离氨基氮117.8 mg/100 g,库尔巴哈值26.6%,水可提取阿拉伯木聚糖0.3 g/L,维生素B2 114.9 μg/L。在所测试的参数中,发芽时间对制麦特性的影响最大。尽管淀粉酶α-淀粉酶和β-淀粉酶的活性较低,但浸出物的值较高,与大麦麦芽相当。所得结果表明,高粱麦芽是生产乳酸发酵饮料的有前途的原料。