Journal of Food Hygiene and Safety (한국식품위생안전성학회지)

The Korean Society of Food Hygiene and Safety (한국식품위생안전성학회)
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Properties of Aqueous Extract of Protaetia Brevitarsis Larva and Mountain Ginseng Fermented by Lactobacillus Brevis

Lactobacillus brevis를 활용한 흰점박이꽃무지 유충과 산양삼의 발효물에 대한 특성 연구

  • Lee, Young-Duck (Department of Food Science and Engineering, Seowon University)
  • 이영덕 (서원대학교 식품공학과)
  • Received : 2018.10.05
  • Accepted : 2018.10.15
  • Published : 2018.10.30
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Abstract

In this study, Lactobacillus brevis SM61 from traditional Kimchi was used for fermentation of aqueous extract of P. brevitarsis larva and mountain ginseng. As measured by MTT assay, aqueous extract of P. brevitarsis larva and fermented mixture of aqueous extract and mountain ginseng did not show specific cellular toxicity in RAW264.7 cells until a concentration of $5-1000{\mu}g/mL$. The polyphenol contents was highest in the fermented mixture of aqueous extract and mountain ginseng. DPPH radical scavenging activity was stronger in the fermented mixture of aqueous extract and mountain ginseng than the aqueous extract. Also, antibacterial activity was tested against E. coli, L. monocytogenes and S. aureus. The fermented mixture of aqueous extract and mountain ginseng showed antibacterial activity against the tested bacteria. Therefore, L. brevis SM61 as a starter might be used to improve functionality of P. brevitarsis larva.

본 연구에서는 김치로부터 분리된 L. brevis SM61을 생화학적 특성과 16s rRNA 염기서열 분석을 통해 분리 및 동정하였으며, 흰점박이꽃무지 유충 열수추출물과 산양삼 분말을 L. brevis SM61을 이용하여 48시간동안 발효를 수행하여 발효물을 제조하였다. 그리고, 흰점박이꽃무지 유충 열수추출물과 L. brevis SM61을 사용한 발효물에 대해 농도에 따른 세포 독성은 없는 것으로 판단되었다. 그리고, 흰점박이꽃무지 유충 열수추출물과 L. brevis SM61을 사용한 발효물에 대해 발효 시간에 따른 폴리페놀 함량을 분석한 결과 발효 초기에는 약 $1.49{\mu}g/mL$ 비해 48시간 이후 약 $5.09{\mu}g/mL$ 수준으로 증가하였다. 또한, 항산화능은 흰점박이꽃무지 유충 열수추출물이 약 60%였으나, L. brevis SM61을 이용한 발효물이 약 98%로 높아졌다. 항균 활성의 경우 L. brevis SM61을 이용한 발효물에서만 항균 효과가 확인되었다. 따라서, 본 연구를 통해 분리된 신규 L. brevis SM61을 이용한 흰점박이꽃무지 유충의 열수추출물에 대한 발효물은 식용 곤충의 기능성을 강화시킬 수 있을 것으로 판단되며, 해당 유산균을 활용하여 다양한 식용 곤충에도 적용이 가능할 것으로 사료된다.

Keywords

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