Total solvable peptide content in the fermented fishmeal was determined by using the biuret method,and polypeptide in the precipitate by using Kjeldahl method.

• 用双缩脲反应法可以测出发酵鱼粉中水溶性总肽的含量,用凯氏定氮法可以测出被沉淀的多肽的含量,从而可以计算出发酵鱼粉中寡肽的含量。