Khao-Mak Preparation
Glutinous rice (500 g) was soaked with water for 6 hours and then steamed for 45
minute. The sample was cool down and washed with water. For black native glutinous rice
was prepared as the method of Tongyai et al. (2012). Then, black native glutinous rice were
mixed with glutinous as the various ratio such as 100:0, 80: 20, 60:40, 40:60, 20:80 and
0:100, respectively. The cooked rice was mixed with Look-Pang 0.2 % w/w of sample,
mixed with 80 g sugar and fermented in the plastic cup at room temperature for 7 days