NUTRITIONAL AND ANTINUTRITIONAL PROPERTIES OF SOME EDIBLE INSECTS OF ASSAM

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Date
2019-07
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AAU, Jorhat
Abstract
Edible insects are considered as underutilized foods that offer significant potential to meet the future global food demands. Insects, traditionally were an integral element of human diets in nearly 100 countries of the world, especially in Asia, Africa and Latin America. Edible insects provide satisfactory energy, protein, monounsaturated fatty acids, polyunsaturated fatty acids and rich in several minerals such as copper, iron, magnesium, manganese, phosphorous, selenium, zinc and vitamins such as riboflavin, pantothenic acid, biotin and folic acid etc. Besides nutritional importance, the edible insects also possess an ample sources of antioxidant properties such as phenol, flavonoid as well as some antinutritional components. In the present investigation, five different edible insects like red ant (Oecophylla smaragdina),muga silkworm(Antherea assamensis),honey bee(Apis cerana),winged termite(Odontotermes obesus) and eri silkworm(Samia ricini) were evaluated for biochemical constituents. The range of moisture, crude fat, crude protein, total soluble protein, crude fibre, carbohydrate and ash were between 6.30-16.04 per cent, 10.20-36.08 per cent, 23.31-52.35 per cent, 12.54-18.71 per cent, 3.16-9.71 per cent, 7.20-16.84 per cent and 2.58-5.60 per cent respectively. Five different edible insect species had sodium content ranging from 10.67-149.10 mg/100g, potassium from 9.68-710.49 mg/100g, calcium from 20.65-222.83 mg/100g, iron from 5.70-25.18 mg/100g and zinc from 5.40-35.18 mg/100g respectively. Antinutritional components like tannin, phytic acid and oxalate were recorded as of 97.82-236.31 mg tannic acid equivalent/100g, 8.55-97.91 mg/100g and 1.49-3.79 mg/100g respectively. The range of phenol content, flavonoid content and antioxidant activity (DPPH) were recorded between 25.78-210.06 mg catechol equivalent/100g, 4.96-44.68 mg quercetin equivalent/100g and 89.36-94.41 per cent respectively. All the five edible insect species exhibited a well-balance nutrient profile and therefore, these could be the potential source for human food and animal feed.
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