So, the rice แกนนูด was supplemented with l-cysteine. HCl (Sigma, C1276, Germany) at 0.05%, and the fermentation with B. lactis and evaluation of its α-amylase การเกิดปฏิกริยา was repeated in triplicate, revealing an increase in the enzymatic การเกิดปฏิกริยาเคมี from 16.3 to 25.8 CU · 100 g− 1. This result corresponds to the level of α-amylase การเกิดปฏิกริยาเคมี of the other two probiotic strains and confirms that cysteine was a limiting factor to B. lactis B94 in rice แกนนูด ( Fig. 1).