Department of Agronomy, Zhejiang University, Huajiachi Campus, Hangzhou 310029, China.
J Agric Food Chem. 2010 Nov 24;58(22):11821-4. doi: 10.1021/jf1029948. Epub 2010 Nov 3.
The Qinghai-Tibetan Plateau in China is considered to be one of the original centers of cultivated barley. At present, little is known about the phytase activity (Phy) or phytic acid content (PA) in grains of Tibetan annual wild barley. Phy and PA were determined in grains of 135 wild and 72 cultivated barleys. Phy ranged from 171.3 to 1299.2 U kg(-1) and from 219.9 to 998.2 U kg(-1) for wild and cultivated barleys, respectively. PA and protein contents were much higher in wild barley than in cultivated barley. Tibetan annual wild barley showed a larger genetic diversity in phytase activity and phytic acid and protein contents and is of value for barley breeding. There is no significant correlation between phytase activity and phytic acid or protein content in barley grains, indicating that endogenous phytase activity had little effect on the accumulation of phytic acid.
中国的青藏高原被认为是栽培大麦的起源中心之一。目前，关于西藏一年生野生大麦籽粒中的植酸酶活性（Phy）或植酸含量（PA）知之甚少。对 135 份野生大麦和 72 份栽培大麦的籽粒进行了 Phy 和 PA 的测定。野生和栽培大麦的 Phy 活性范围分别为 171.3-1299.2 U kg(-1)和 219.9-998.2 U kg(-1)。野生大麦的 PA 和蛋白质含量均显著高于栽培大麦。西藏一年生野生大麦在植酸酶活性和植酸及蛋白质含量方面表现出较大的遗传多样性，对大麦的育种具有重要价值。大麦籽粒中的植酸酶活性与植酸或蛋白质含量之间没有显著相关性，表明内源性植酸酶活性对植酸的积累影响较小。
