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The sex specific differences on nutritional composition of adult wild field cricket,Brachytrupes portentosus (Lichtenstein AAH, 1796) in Bangladesh

In: Journal of Insects as Food and Feed
Authors:
M.M. Hasan Department of Entomology, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
Laboratory of Tropical Entomology, Sylhet Agricultural University, Sylhet 3100, Bangladesh.

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M.J. Uddin Department of Animal Nutrition, Sylhet Agricultural University, Sylhet 3100, Bangladesh.

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M.O. Faruque Department of Agricultural Extension, Bandarban Sadar, Bandarban 4600, Bangladesh.

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H. Khatun Department of Food Science and Nutrition, Hajee Mohammad Danesh Science and Technology University, Dinajpur 5200, Bangladesh.

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M.N. Hoque Department of Biochemistry and Molecular Biology, Khulna Agricultural University, Khulna 9100, Bangladesh.

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M.M. Hasan Department of Fisheries Technology and Quality Control, Sylhet Agricultural University, Sylhet 3100, Bangladesh.

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M.A.S. Abir Department of Entomology, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
Laboratory of Tropical Entomology, Sylhet Agricultural University, Sylhet 3100, Bangladesh.

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M.F. Mondal Department of Entomology, Sylhet Agricultural University, Sylhet 3100, Bangladesh.
Laboratory of Tropical Entomology, Sylhet Agricultural University, Sylhet 3100, Bangladesh.

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Wild field crickets (Brachytrupes portentosus) were found to have a sex-based demand in the market of Bangladesh. This study was conducted to evaluate the influence of sex on nutritional composition ofB. portentosus. Both the male and female adultB. portentosus were found to have high nutritional value. The average weight and dry matter of female species were significantly higher compared to maleB. portentosus. On the basis of dry matter contents, the crude protein (62.1 g/100 g) and crude fibre (9.4 g/100 g) was higher in male than the protein (48.8 g/100 g dry matter; DM) and fibre (8.8 g/100 g DM) content of female species. However, crude fat content was lower in male (22.1 g/100 g DM) than female (29.9 g/100 g DM)B. portentosus. Nitrogen free extract was lower in male (2.8 g/100 g) than female (7.9 g/100 g). Consequently, the energy value was higher in female (496.6 kcal) than the male (458.3 kcal) in 100 g dry matter. High performance liquid chromatography results revealed nine essential and six non-essential amino acids found in adultB. portentosus with slight variation in males and females. Females contained all essential and non-essential amino acids in higher amount than males except for alanine, phenylalanine and threonine. Gas chromatography-mass spectrometry results showed that both male and femaleB. portentosus contained palmitic acid, stearic acid, palmitoleic acid, oleic acid and linoleic acid. However, myristic acid was only found in adult femaleB. portentosus. The atomic absorption spectroscopy results showed higher mineral contents (Ca, Mg, K, Na, Zn and Fe) in both sexes ofB. portentosus. However, male contained higher Ca and K compared to femaleB. portentosus while Zn and Fe were almost same in both sexes.

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