文献类型： 外文期刊

第一作者： Zhang, LL

作者： Zhang, LL;Hu, PS;Tang, SQ;Zhao, HJ;Wu, DX

作者机构：

期刊名称：JOURNAL OF FOOD BIOCHEMISTRY （ 影响因子：2.72； 五年影响因子：2.543 ）

ISSN： 0145-8884

年卷期： 2005 年 29 卷 6 期

页码：

收录情况： SCI

摘要： Two subspecies of rice, Oryza sativa ssp. indica rice mutant II-ge1 and O. sativa ssp. japonica rice mutant XS-ge1, were characterized by an enlarged embryo compared to their wild types. Significant increases in crude lipid content; crude protein content; vitamin B1 (V-B1); vitamin B2; vitamin E (V-E); essential amino acids such as arginine, aspartic acid, glutamic acid, lysine and methionine and mineral elements such as Ca, Fe, Mg, K, P and Zn were detected in rice with a giant embryo (ge). The nutrients in the brown rice changed drastically after pre-germination. The dramatic nutrient enrichments were observed in the pre-germinated brown rice with a ge. The six major enhanced nutrients were gamma-amino-butyric acid (GABA), lysine, Mg, V-B1, V-E and Ca, and the amounts were 7.3 and 4.7 times enriched for GABA, 3.4 and 3.0 times for lysine, 2.9 and 2.7 times for Mg, 2.8 and 2.5 times for V-B1, 2.5 and 2.2 times for V-E and 2.1 and 1.8 times for Ca, respectively, relative to those in the brown rice with a normal embryo. The results suggest that a ge can be used as a phenotypic marker for food processors to select rice enriched with certain nutritional components, and that the application of giant-embryo rice would help develop cultivars with an improved nutritional content.

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