Nutritional components analysis and storage property evaluation of earthworm powder

This experiment studied the nutritional components of earthworm powder prepared and its storage stability under different temperatures and humidities. Results showed that the content of crude protein of earthworm powder was 69.52%. 16 kinds of amino acids were found in sample. 移EAA/移AA value and 移EAA/移NEAA value were 36.4%, 61.62%, respectively, which were in line with the ideal model. Acid value of earthworm powder increased with storage time extending. And acid value had a positive relationship with storage conditions. At 20益, 30益and RH 50%, acid value was 3.61~5.84 mg/g after 28 d. Peroxide value decreased at the first stage, then increased in the later storage period. The influence of storage condition on pepsin digestibility was not obvious. Pepsin digestibility was above 88% after 28 d, reaching the fish meal national standards for first grade. Under the temperature and humidity range of the experiment, earthworm powder still kept good quality after 28 d, it showed that earthworm powder could potentially be used as material for high quality protein feed.