基于EST-SSR和SNP标记的大麦麦芽纯度检测  

EST-SSR and SNP Markers Based Barley Malt Purity Detection

作　　者：张利莎 董国清[1] 扎桑[2,3] 卓嘎[3] 王德良[4] 谷方红[4] 袁兴淼[2] 张京[2] 郭刚刚[2] 

机构地区：[1]武汉轻工大学生物与制药工程学院,湖北武汉430023 [2]农业部作物种质资源与生物技术重点开放实验室/国家农作物基因资源与基因改良重大科学工程/中国农业科学院作物科学研究所,北京100081 [3]西藏大学农牧学院,西藏林芝860000 [4]中国食品发酵工业研究院,北京100027

出　　处：《作物学报》2015年第8期1147-1154,共8页Acta Agronomica Sinica

基　　金："十二五"农村领域国家科技支撑计划项目(2013BAD01B05-2;2012BAD03B01-2);科技部国际合作项目(2013DFR30890-1);国家现代农业产业技术体系建设专项(CARS-05)资助

摘　　要：大麦麦芽作为啤酒酿造的主要原料之一,其纯度决定了麦芽原料的均一性,进而影响加工工艺和啤酒品质。为高效准确地鉴定麦芽纯度,在啤酒企业进行麦芽原料采购和质量监测时提供参考依据。本研究分别利用EST-SSR和SNP标记定性检测了按比例预混的麦芽样品纯度,并利用SNP标记定量检测了4份送检的麦芽盲样纯度。结果表明,EST-SSR标记能定性检测混杂度高于10%的麦芽样品,而SNP标记能够有效鉴定混杂度低至5%的麦芽样品。SNP标记对纯度定量检测的单次抽样的测定值与真实值之间的误差在3%以内。比较发现,本研究所用的两类分子标记均可用于麦芽样品的纯度检测,但基于KASP技术的SNP标记可以满足麦芽纯度的快速定量检测需要。Barley malt is one of the main raw materials used in beer production. Malt purity determines the level of its homogene-ity, which affecting processing techniques and beer quality. For the efficient and accurate identification of malt purity, providing evidence for the malt raw materials procurement and quality monitoring in beer production, the purities of six proportionally pre-mixed malt samples and another four blind samples were detected by using EST-SSR and SNP markers in this study. The results showed that the samples with mixing ratio higher than 10% were distinguished with EST-SSR markers in qualitative detection, whereas those with SNP markers were more effective even the sample impurity as low as 5%. In the quantitative detection, the standard error between the measured value and the true value was lower than 3% in one sampling. Obviously, both of the two types of molecular markers are all can be used for malt purity test, but KASP assay based-SNP detection is more suitable for rapid and quantitative malt purity test.

关 键 词：大麦麦芽 纯度检测 分子标记 KASP技术 

分 类 号：S512.3[农业科学—作物学]