贮存温度和时间对黄粉甲蛹营养物质含量的影响

Effect of Storage Temperature and Time on Nutrition Content of Tenebrio molitor Pupae

为筛选黄粉甲蛹的最佳贮存温度和时间,实现管氏肿腿蜂的规模化生产,将黄粉甲蛹经9℃、3℃、-3℃和-9℃分别贮存5 d、15 d、25 d、35 d和45 d后取出,测定其体内蛋白质、总糖、海藻糖、糖原、还原糖和脂肪含量变化情况。结果表明,经不同时间和低温贮存后,黄粉甲蛹体内的营养物质含量变化差异显著。蛋白质、总糖、海藻糖、糖原和脂肪含量均随贮存时间的延长而降低,其中总糖、海藻糖和糖原含量随着贮存温度的升高而加速消耗,而蛋白质和脂肪在9^-3℃的范围内含量变化同总糖等一致,若达到-9℃后,贮存相同时间的黄粉甲蛹体内其含量明显低于-3℃的。还原糖含量变化同上述各营养物质相反,随贮存温度和时间的增加而显著增加,最高含量可达到未贮存前的4倍之多。

Tenebrio molitor pupae stored at 9, 3, - 3 and - 9 ℃ for 5, 15, 25, 35 and 45 d respectively, the pupae content of protein, total sugar, trehalose, glycogen, polysaccharide and fat were measured. Results indicated storage temperature and time had significant influence on the nutrition content of the pupae. The content of protein, total sugar, trehalose, glycogen and fat decreased gradually along with the time, but the decline rate speed was different among them. Total sugar, trehalose and glycogen were exhausted more under higher temperature than lower temperature. While, the protein and fat only expeditiously reduced from - 3 to 9℃. And the data of protein and fat at - 9℃ was lower than - 3 ℃ at preservation time. It had opposite trend for polysaccharide content to the above mentioned nutrition. It was increased with adding preservation temperature and time combines, and the most value could be to four times than before.