A Simplified Method for the Determination of the Amount of Mg and K Extracted from Rice Grains with a Hydrochloric Acid Solution

Abstract

A simplified method for selection for eating quality in early generations of rice involved the deternrtination of the Mg/K ratio of brown rice by extraction with dilute hydrochloric acid (0.36 N) in several cultivars. Grains were extracted with hydrochloric acid for 60 minutes at room temperature, collected and washed immediately with distilled water. Ger-minability of grains after this procedure exceeded 80 %. Chemical analyses showed that 15-17 % of total K and 8-10 % of total Mg could be extracted by the proposed method