Department of Biochemistry, Ambrose Alli University, P. M. B. 14, Ekpoma, Nigeria.
J Food Sci Technol. 2011 Dec;48(6):724-9. doi: 10.1007/s13197-010-0186-y. Epub 2010 Dec 21.
The effect of germination on the level of phytase activity and the contents of phytates and phosphorus of five Nigeria grown cereal grains was studied. The cereals screened were rice (Oryza sativa), maize (Zea mays), millet (Panicum miliaceum), sorghum (Sorghum bicolor) and wheat (Triticum aestivum). Phytase activity was high (0.21-0.67 U g(-1)) in all samples. Phytate content ranged between 5.6 and 6.2 mg g(-1) while total phosphorus content ranged between 3.3 and 4.3 mg g(-1). During germination, the level of phytase activity increased and reached its maximal value after seven (16-fold), six (5-fold), five (7-fold), seven (3-fold) and eight (6-fold) days of germination for rice, maize, millet, sorghum and wheat respectively. After this initial increase, phytase activity declined slightly (P < 0.05). The increase in phytase activity during germination was accompanied by a significant reduction in phytate (P < 0.05) and a small but significant increase in total phosphorus.
研究了发芽对五种尼日利亚种植谷物中植酸酶活性水平、植酸盐和磷含量的影响。筛选出的谷物包括水稻（Oryza sativa）、玉米（Zea mays）、小米（Panicum miliaceum）、高粱（Sorghum bicolor）和小麦（Triticum aestivum）。所有样品中的植酸酶活性都很高（0.21-0.67 U g(-1))。植酸盐含量在 5.6 到 6.2 mg g(-1) 之间，而总磷含量在 3.3 到 4.3 mg g(-1) 之间。在发芽过程中，植酸酶活性水平增加，水稻、玉米、小米、高粱和小麦分别在发芽 7 天（16 倍）、6 天（5 倍）、5 天（7 倍）、7 天（3 倍）和 8 天（6 倍）后达到最大值。在最初的增加之后，植酸酶活性略有下降（P < 0.05）。在发芽过程中植酸酶活性的增加伴随着植酸盐含量的显著降低（P < 0.05）和总磷含量的微小但显著增加。
