A c c e p t e d Purpose: In the present study, we evaluated the amino acids, antioxidant activities of cricket (Gryllus bimaculatus) powder and protein extract. Methods: Moisture, crude fat, protein, and mineral content were measured via chemical analysis according to Association of Official Analytical Chemists (AOAC) guidelines. Amino acid composition was analyzed using an automatic amino acid analyzer. The antioxidant activities of CPE [cricket (G. bimaculatus) powder extract] and CPPE

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... t (G. bimaculatus) powder protein extract] calculated by assessing the total polyphenol content and the radical scavenging activities of the radicals 1,1-diphenyl-2picrylhydrazyl (DPPH). Results: CPE had higher values of Ca and K, than CPPE. CPE had higher essential amino acid amounts compared to CPPE. CPE's branched chain amino acid contents [i.e., valine (CPE, 17186.31 mg/kg; CPPE, 1147.28 mg/kg), leucine (CPE, 25382.52 mg/kg; CPPE, 2753.34 mg/kg), and isoleucine (CPE, 12790.01 mg/kg; CPPE, 1281.90 mg/kg)] significantly higher values than CPPE. The total polyphenol content of CPPE (12.18 mg GAE/g) was higher than CPE (6.61 mg GAE/g). DPPH radical scavenging activity of CPPE (80.37%) was also higher than CPE (68.25%). Conclusion: Therefore, the results of this study suggest that cricket (G. bimaculatus) is a suitable protein and natural antioxidant material for health improvement. In the future, further studies on the health benefits of cricket (G. bimaculatus) should be conducted.