Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Physicochemical Properties and Biological Activities of Tenebrio molitor Fermented by Several Kinds of Micro-organisms

유용 미생물을 이용한 발효갈색거저리 추출물의 이화학적 특성 및 생리활성 효과

  • Received : 2018.03.16
  • Accepted : 2018.04.11
  • Published : 2018.08.30
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Abstract

In this study, Tenebrio molitor (T. molitor) was fermented with Lactobacillus plantarum JBMI F3 (F3), Lactobacillus plantarum JBMI F5 (F5), Lactobacillus gasseri Ba9 (Ba9), Aspergillus kawachii KCCM 32819 (Ak), Saccharomyces cerevisiae KACC 93023 (Sc), and Bacillus subtilis KACC 91157 (Bs). After fermentation, the fermented products were extracted by water, ethanol, and methanol, and their physicochemical and biological properties were investigated. In a DPPH assay, the water extracts of the fermented products of T. molitor showed high antioxidant ability. Among the water extracts, the fermented product by Bs showed the highest DPPH radical scavenging activity. The total contents of phenolic compounds and flavonoids were highest in the fermented products by Ak and Bs, respectively. Reducing activity was detected the most high activity on ethanol extract of fermented product by Bs. The water extract of the fermented product by Bs exhibited strong enzymatic activity for fibrinogen and starch hydrolysis. Based on the observed physicochemical and biological properties, the fermented products of T. molitor by microorgansims can likely be applied as functional materials in various industries.

본 연구는 미생물을 이용하여 갈색거저리를 발효시킨 분말을 water, ethanol, methanol 용매별로 추출하여 다양한 실험을 행하였다. 균주는 3종의 유산균 Lactobacillus plantarum JBMI F3 (F3), Lactobacillus plantarum JBMI F5 (F5), Lactobacullus gasseri Ba9 (Ba9), 1종의 곰팡이 Aspergillus kawachii KCCM 32819 (Ak), 1종의 효모 Saccharomyces cerevisiae KACC 93023 (Sc), 1종의 바실러스 Bacillus subtilis KACC 91157 (Bs) 총 6종의 균주를 사용하였다. 각 균주를 이용한 발효 후 갈색거저리의 효능을 알아보기 위해 DPPH assay, 총 phenolic compound 및 Flavonoid 함량, Cu 환원력, Fibrinolytic activity, 효소-기질 활성 분석을 진행하였다. 그 결과, DPPH assay 결과, Water 추출물이 전반적으로 높은 항산화능을 보였고, 그 중 Bs 균주 발효 추출물이 우수한 라디컬 소거능을 보였다. 총 phenolic compound 및 Flavonoid의 경우, phenolic compound는 Ak발효군이 가장 함량이 많았고, Flavonoid는 Bs발효군이 가장 높았다. 환원력은 ethanol - Bs발효군에서 높은 수치를 확인하였고, Fibrinolytic activity 및 전분분해능은 water - Bs발효군에서 우수한 효과를 나타냈다. 위와 같은 결과를 토대로 발효 갈색거저리분말은, 기존 갈색거저리 분말보다 항산화능 및 생리활성 측면에서 효능이 상당부분 향상됨을 알 수 있었다. 그러므로 발효거저리분말은 식품산업전반에서 높은 이용가치를 증명하는 기초 연구자료로 활용될 것이다.

Keywords

References

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