ABSTRACT

Edible insects have been proposed as a good source of different nutrients including protein. However, the nutritional value of edible insects could be affected by several factors that must be considered in order to enhance their potential application in food. In this work, the effect of feeding two different diets, alfalfa and maize green fodder, on the chemical composition of edible grasshopper (Sphenarium purpurascens) consumed in Mexico was assessed. The dry matter, crude protein content, amino acid profile, in vitro protein digestibility, crude fat, and insoluble fiber content differed significantly between grasshoppers fed with alfalfa and maize (p-value < 0.05). Grasshoppers fed with alfalfa showed an increment of 10% in essential amino acid index and biological value compared to grasshopper fed with maize green fodder. Our results demonstrate that the nutritional composition of edible grasshopper S. purpurascens can be modified through diet resulting in an increase in its nutritional value.

摘要

已经提出食用昆虫是包括蛋白质在内的各种营养素的良好来源。但是，可食用昆虫的营养价值可能受到几个因素的影响，必须加以考虑才能增强其在食品中的潜在应用。在这项工作中，评估了饲喂两种不同日粮苜蓿和玉米绿色饲料对墨西哥食用可食用蚱grass（Sphenarium purpurascens）的化学成分的影响。饲喂苜蓿和玉米的蚱hopper的干物质，粗蛋白含量，氨基酸谱，体外蛋白消化率，粗脂肪和不溶性纤维含量差异显着（p值<0.05）。与饲喂玉米绿饲料的蚱essential相比，饲喂苜蓿的蚱showed的必需氨基酸指数和生物学价值提高了10％。我们的结果表明，可通过饮食改变食用草紫pur的营养成分，从而增加其营养价值。