Black Soldier Fly Larvae (Hermetia illucens, BSFL) is an environmental purification insect utilized as an animal feed source due to its high protein content. BSFL need to be dried to preserve quality, and the optimal drying method should be cost-effective. In this study, various drying methods (hot air (HD), freeze (FD), vacuum (VD), and combined-drying (CD)) were applied to BSFL, and then BSFL powders were characterized. Crude protein content was highest in HD and lowest in CD, and there was no significant difference in crude fat content (p>0.05). In the measurement of the total amino acid content of BSFL, glutamic acid and aspartic acid were the highest regardless of the drying method. The total amino acid content was the highest in HD and the lowest in CD. Total polyphenol content was higher in VD and FD than in HD and CD. Also, hydrogen peroxide and DPPH radical scavenging showed similar results. In the antioxidant measurement results, VD and FD showed higher antioxidant capacity, but considering cost-effectiveness, HD was the most available method for drying BSFL.

Abstract
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Author Information

• 현지용(제주대학교 식품공학과) | Ji-Yong Hyun (Department of Food Bioengineering, Jeju National University)
• 남정현(제주대학교 식품공학과) | Jung-Hyun Nam (Department of Food Bioengineering, Jeju National University)
• 천지연(제주대학교 식품공학과) | Ji-Yeon Chun (Department of Food Bioengineering, Jeju National University) Corresponding Author