... and fresh 3.natural and healthy 4.rich in amino acid.protein,B-group vitamins,etc Introduction: ... ,all kinds of soy sauce,fermented bean curd,food vinegar and family seasoning and so on.2. ... the meat.3. Convenience food:such as fast-food,leisure food,frozen food,pickles,biscuits and cakes,puffed food,dairy products,all kinds ... yeast extract powder as flavor enhancer for food spice rich in amino acids