鼻优草螽的资源成分分析及价值评价

本文分析评价了鼻优草螽Euconocephalus nasutus Thunberg的资源成分。结果表明:采于牧草地和采于水稻田的鼻优草螽都具有丰富的营养,其粗蛋白含量分别为18.39%和9.34%、粗脂肪含量分别为5.93%和13.22%、灰分含量分别为0.65%和0.52%、总糖含量分别为0.27%和0.28%;总氨基酸含量分别为19.832mg/g和10.957mg/g,其中必需氨基酸占总氨基酸的45.185%和49.557%,必需氨基酸与非必需氨基酸的比值分别为0.824和0.982;其脂肪酸分别占总脂肪的59.66%和69.72%,多不饱和脂肪酸和饱和脂肪酸含量的比值为0.44和0.29;此外,鼻优草螽还含有丰富Ca、Fe、Zn、Na、Cu、Mn、P等矿质元素和微量元素。在分析了鼻优草螽的资源成分基础上,对其开发利用价值进行了评价。

Analysis and evaluation of the nutritional composition of Euconocephalus nasutus Thunberg

The nutritional composition of Euconocephalus nasutus Thunberg from grassland and paddy fields was determined. The results show that E. nasutus from both these two habitats contained abundant nutrients, the relative percentages of each being; protein （ 18.39% and 9.34% ） , fat （5.93% and 13.22% ） , ash （0.65% and 0. 52% ） and carbohydrate （0. 27% and0. 28% ）. Total amino acid content of samples from grassland and paddy fields were 19. 832 mg/g and 10. 957 mg/g respectively, of which were 45. 185% and 49. 557% essential amino acids. Ratios of essential to unessential amino acids from the two habitats were 0. 824and 0. 982 respectively. Ratios of unsaturated to saturated fatty acids in insects from each habitat were 0. 5966 and 0. 6972, respectively, whereas ratios of polyunsaturated to saturated fatty acids were 0. 44 and 0. 29. E. nasutus contained minerals and trace elements, including Ca,Fe,Zn,Na.Cu,Mn.P. The potential for the utilization of E. nasutus was evaluated in light of these data.