优质稻谷中直链淀粉含量测定方法的探讨  

Study on the Mensurations of Paddy Amylose Content

作　　者：谢君红 吴笑盈 

机构地区：[1]浙江省宁波粮油质量检验检测站,浙江余姚315400

出　　处：《粮食加工》2008年第1期42-43,共2页Grain Processing

摘　　要：直链淀粉是评价稻米食用、蒸煮品质的一项重要指标,也是优质稻谷定级指标之一。直链淀粉测定过程中样品粉粒大小是影响测定结果的一个重要因素,国标方法要求是φ180μm细度。通过对φ180μm细度、φ150μm细度的样品分别进行测定,结果表明采用φ150μm细度的样品进行检测的重现性是好的,结果是准确可靠的。而采用φ150μm细度可同时测定稻谷中胶稠度等指标,这样在稻谷品质测报工作中可大大提高工作效率。Amylose content is not only one of the most important standards for valuing the edible and steaming quality of paddy, but it is also one of the most important standards to classify the high quality paddy. In the course of amylase content mensuration, the size of the sample＇s powder granule is the key factor. The GB Standards require for φ180μm fineness. By testing the samples of φ180μm fineness and φ150μm fineness respectively, the results show that it has better recur characters to adopt φ150μm fineness, which is high-performance and credible. What＇s more, adopting the φ150μm fineness can also testing some other standards, for example, the paddy dopy degree. So in this way, the paddy quality test reports will be much more efficient.

关 键 词：优质稻谷 直链淀粉 测定方法 

分 类 号：S511[农业科学—作物学]