생명과학회지 (Journal of Life Science)

  • 제27권12호
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  • Pages.1470-1478
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  • 2017
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  • 1225-9918(pISSN)
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  • 2287-3406(eISSN)
한국생명과학회 (Korean Society of Life Science)
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산지별 고초균 발효누에의 이화학적 특성 및 생리활성

Biological Activity and Biochemical Properties of Water Extracts from Bacillus subtilis-fermented Silkworm (Bombyx mori L.) Powder by Origin

  • 투고 : 2017.09.29
  • 심사 : 2017.11.22
  • 발행 : 2017.12.30
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초록

본 연구는 건강기능성 식품의 소재로서 활용하기 위해 부안, 남원 및 보은의 산지별 누에분말을 단백질 분해능이 뛰어난 Bacillus subtilis KACC 91157 균주로 발효시켜 제조한 발효누에 추출물의 이화학적 특성 및 생리활성을 평가하였다. 구성 아미노산 함량은 부안 누에군(BU)에서 가장 높았으나, 발효 후에는 보은 발효누에군(BBO)에서 가장 높은 함량을 보였다. 미네랄 함량은 K, Ca, Mg 순으로 함유되어 있었으나, Na가 가장 높은 미네랄 함량의 증가율을 보였다. DPPH를 통한 자유라디칼 소거능과 혈전용해 효소활성은 발효 전에 비하여 발효누에군에서 높게 나타났으며, 특히 BBO군에서 가장 높은 활성을 보였다. 전립선암 세포(LNcaP)와 유방암 세포(MCF-7) 성장 저해능은 BBO군에서 가장 높게 나타났으며 LPS 처리 RAW 264.7세포의 NO생성 억제활성 역시 BBO군에서 가장 높게 나타났다. 이와 같이 산지별 고초균 발효누에 추출물을 비교해본 결과 보은 누에가 건강기능성 식품의 소재로서 활용할 가치가 높은 것으로 사료된다.

The aim of this study was to investigate biological activity and biochemical properties of extracts from Bacillus subtilis-fermented silkworm (Bombyx mori L., SP) powder of different origin (Buan, Namwon, and Boeun). An additional aim was to determine the inhibition of cancer cell (B16-F10, HT-29, LNcaP, and MCF-7) proliferation and nitric oxide (NO) production from lipopolysaccharide (LPS)-induced RAW264.7 cells. Biological activities (${\alpha},{\alpha}^{\prime}$-diphenyl-${\beta}$-picrylhydrazyl [DPPH], free radical scavenging activity, fibrinolytic activity, antiproliferation activity, and anti-inflammatory activity) and biochemical properties (compositional amino acid contents, and mineral contents) were examined in water extracts from silkworm powder and B. subtilis-fermented silkworm powder. The highest amino acid contents were detected in Buan silkworm powder (BU). After fermented, the highest contents were found in B. subtilis-fermented Buan silkworm powder (BBO). The major minerals detected were K, Ca, and Mg. Rates of these minerals, especially those of Na increased after fermented. DPPH radical scavenging activity and fibrinolytic activity were stronger in the fermented group than non-fermented group. DPPH radical scavenging activity and fibrinolytic activity were highest in the extract from BBO. The inhibition activities of LNcaP and MCF-7 cells viability were significantly decreased in the BBO, and there was no inhibition activity in other cancer cells (B16-F10 and HT-29). An SRB assay of the cell viability of RAW 264.7 cells exposed to extracts of silkworm powder and B. subtilis-fermented silkworm powder revealed no toxicity in any of the groups. Compared with the LPS-treated group, the biggest reduction in NO production was detected in the BBO group. Based on these results, extracts from Boeun silkworm powder fermented with B. subtilis could be a candidate material as a dietary supplement for use in healthy functional foods.

키워드

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