Abstract: The tofu production method is a process for producing tofu that uses transglutaminase enzyme to improve the texture and elasticity of the tofu, so that soft or silken tofu is more resistant to mechanical abuse during food preparation, and firm tofu can be sliced. The amount of transglutaminase is less than 0.001 parts by weight, or less than 2 units per gram. According to one process, the coagulant and the transglutaminase are added to cold soymilk, placed into a tofu tray and sealed, heat-treated at 50° C. for 0.5-1 hour, then at 85° C. for 40-70 minutes to produce silken tofu. According to another process, the coagulant is added to the soymilk and the mixture is coagulated to form curds at 85° C., the whey is drained from the curds, the curds are cooled to 50° C., the transglutaminase is added, and the curds are placed into a pressing mold to make firm tofu.

Abstract: A process for producing high yields of .gamma.-hexalactone and 2-pentanone from the corresponding hexanoic acid starting material is carried out with high amounts of oxygen and sugar in the presence of a mold microorganism. Fragrance compositions and foodstuff compositions are augmented and enhanced by the presence of the product compounds.