2.2. Preparation of soy milk with 12% total solid
Soybeans (10 g) were washed three times using tap water onetime rinsing using de-ionized water followed by soaking in deionized water (1 L) for 14 h at room temperature (Wang, Yu, Yang, & Chou, 2003). Excess water was then drained off and the shells were removed. The swollen beans were blended with 250 mL of boiling water in a laboratory blender (Waring, New Hartford, CT, USA) at low speed followed by boiling for 5 min. The blended soybean was then passed through 4 layers of cheesecloth. The soy milk fat content (1.86%) was corrected to 3.4% using 1.54 g soy oil/100 g soy milk. The soy milk was reheated to 80 C for 10 min and immediately chilled (4 C) prior to making ice cream.