Soy beverage was heated up to 98 °C (with stirring)
and held at the same temperature for two minutes.
Coagulant solution (1.5 g glucono delta lactone (GDL)
in 20 ml distilled water) was combined with the heated
soy beverage in a beaker, and this mixture was allowed
to stand for 30 min to solidify to tofu. The tofu was
removed from the beaker and wrapped in fine-mesh
polyester cloth. The whey was collected, and the tofu
was placed in the running cold water for at least one
hour. The weight of the tofu was then recorded to
determine the yield of tofu per kg soybean seed protein