The Korean Journal of Food And Nutrition (한국식품영양학회지)

The Korean Society of Food and Nutrition (한국식품영양학회)
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Study on the Oxidative and Microbial Stabilities of Four Edible Insects during Cold Storage after Sacrificing with Blanching Methods

블랜칭법으로 희생한 4종 식용 곤충의 냉장 저장 중 산화 안정성

  • Son, Yang-Ju (Dept. of Food and Nutrition.Research Institute of Human Ecology, Seoul National University) ;
  • Ahn, Whee (Dept. of Food and Nutrition.Research Institute of Human Ecology, Seoul National University) ;
  • Kim, Soo-Hee (Dept. of Culinary Arts, Kyungmin University) ;
  • Park, Hyo-Nam (Dept. of Culinary Industry Business Administration, Sejong Cyber University) ;
  • Choi, Soo-Young (Sempio) ;
  • Lee, Dong-Gue (Dept. of Culinary Science and Food Service Management, Kyunghee University) ;
  • Kim, An-Na (Dept. of Culinary Science and Food Service Management, Kyunghee University) ;
  • Hwang, In-Kyeong (Dept. of Food and Nutrition.Research Institute of Human Ecology, Seoul National University)
  • 손양주 (서울대학교 식품영양학과.생활과학연구소) ;
  • 안휘 (서울대학교 식품영양학과.생활과학연구소) ;
  • 김수희 (경민대학 호텔외식조리과) ;
  • 박효남 (세종사이버대학교 조리산업경영학과) ;
  • 최수영 (샘표식품) ;
  • 이동규 (경희대학교 조리외식경영학과) ;
  • 김안나 (경희대학교 조리외식경영학과) ;
  • 황인경 (서울대학교 식품영양학과.생활과학연구소)
  • Received : 2016.10.26
  • Accepted : 2016.12.02
  • Published : 2016.12.31
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Abstract

Edible insects have gained recognition worldwide as complementary protein sources. Recently, four edible insects were newly allowed to be used as food materials in Korea: the mealworm (Tenebrio molitor), the cricket (Velarifictorus asperses), the white-spotted flower chaffer beetle larva (Protaetia brevitarsis seulensis), and the rhinoceros beetle larva (Allomyrina dichotoma). In this study, we evaluated the oxidative stabilities of these four edible insects during cold storage. The insects were sacrificed by blanching for 3 minutes in boiling water. The blanched insects were then stored at $4^{\circ}C$ in an incubator for 42 days. The color values, titratable acidity, peroxide values, acid values, TBARS, contents of VBN, and total plate counts of the insects were measured at days 0, 2, 4, 7, 10, 14, 21, 28, 35, and 42, respectively. Blanching decreases oxidative stresses during storage. At day 0, the white-spotted flower chaffer beetle larva showed the highest values for acid value, TBARS, VBN, and microbial counts. Most of the oxidative indicators were significantly changed at day 14 in all four insects, possibly related with the growth on all microbial plates. Based on microbial safety and the oxidative stabilities of lipids and proteins, optimal storage conditions for the cricket, the white-spotted flower chaffer beetle larva, and the rhinoceros beetle larva were 10~14 days at $4^{\circ}C$. Likewise, the mealworm showed rapid oxidation after day 14, but poor qualities were not observed until day 28.

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References

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