Differences in Phytase Activity and Phytic Acid Content between Cultivated and Tibetan Annual Wild Barleys

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• 作者：Fei Dai ; Long Qiu ; Yang Xu ; Shengguan Cai ; Boyin Qiu ; Guoping Zhang
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2010
• 出版时间：November 24, 2010
• 年：2010
• 卷：58
• 期：22
• 页码：11821-11824
• 全文大小：666K
• 年卷期：v.58,no.22(November 24, 2010)
• ISSN：1520-5118

文摘

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.

Keywords (keywords):

Barley (Hordeum vulgare L.); mineral nutrient; phytase; phytic acid; wild barley