锌在麦芽中富集研究及对麦芽生理生化特性的影响

Study of Enrichment of Zn in Malt and Effects of ZnSO_4Concentrations on Physiological and Biochemical Characteristics of Malt

本实验研究了不同锌处理水平对麦芽富锌量及麦芽生理生化的影响。结果表明:最佳的浸麦度为41.8%;在150和200mg·L-1时麦芽中有机锌含量最高达97.0ug·g-1,是对照的20倍左右,其中90%左右结合于蛋白质和多糖中;在150%低浓度锌促进了麦芽的溶解,提高了麦芽的呼吸强度和各种酶的活性;低浓度的锌促进了麦芽中蛋白质和多糖的合成;

The effect of different ZnSO4 concentration on the Malt’s growth, metabolism and zinc accumulation were studied in this article. The results showed that zinc could accelerate the barley’s solubility; the best soaking degree of barley was 41.8%; in the range of 150 mg·L-1 to 200mg·L-1of ZnSO4, the content of organic zinc of malt reached to 97.0 ug·g-1, it is 20 times compare to control, and 90% of organic zinc existed in protein and polysaccharides; from 0 to150 mg·L-1 , the ZnSO4 increased respiratory intensity of malt and the activity of α- amylase, protease, peroxidase and polyphenoloxidase of malt.