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효소종류에 따른 불등풀가사리 유래 다당류의 이화학적 특성 및 생리활성

Biological activities and physicochemical properties of polysaccharides from Gloiopeltis furcata prepared by using various enzymes

  • 이대훈 (대구가톨릭대학교 식품공학전공) ;
  • 홍주헌 (대구가톨릭대학교 식품공학전공)
  • Lee, Dae-Hoon (Department of Food Science and Technology, Catholic University of Daegu) ;
  • Hong, Joo-Heon (Department of Food Science and Technology, Catholic University of Daegu)
  • 투고 : 2017.06.01
  • 심사 : 2017.06.19
  • 발행 : 2017.06.30

초록

본 연구에서는 불등풀가사리 유래 다당류의 기능성식품소재로의 활용성을 향상시키고자 불등풀가사리에 5종의 상업용 효소를 처리한 다음 분리된 다당류의 이화학적 특성 및 생리활성을 조사하였다. 효소 분해 구간의 다당 수율은 52.8-66.4%로 무처리 구간 50.6%에 비해 유의적으로 증가하였다. 이화학적 특성으로 총당 및 단백질 함량은 각각 71.04% 및 7.22%, uronic acid 및 sulfate 함량은 23.18 g/100 g 및 28.27%로 효소 분해를 통해 증가하였다. DPPH radical 소거활성 및 FRAP에 의한 항산화 활성은 23.10% 및 $218.50{\mu}M$을 나타내어 무처리 구간에 비해 항산화 활성이 우수하였으며, L132 세포 사멸에 대한 보호효과는 viscozyme 효소처리 구간($1{\mu}g/mL$)에서 $H_2O_2$를 처리한 구간 대비 세포 보호효과는 85.64%로 세포 활성이 증가하여 높은 세포 보호효과를 나타내었다. NO 생산량은 viscozyme 효소 처리구간 $5{\mu}g/mL$ 농도에서 $32.13{\mu}M$ 함량을 나타내어 LPS 대비 90% 높은 생성량을 나타내었으며, 4종의 암세포(A549, SNU719, HeLa 및 MCF7) 생존율은 $25{\mu}g/mL$농도에서 각각 69.57%, 61.06%, 52.74% 및 68.64%의 유의적으로 낮은 암세포 생존율을 나타내었다. 따라서 불등풀가사리의 효소 분해를 통해 다당의 이화학적 특성 및 생리활성이 향상됨에 따라 기능성 식품소재 로 다양하게 활용 가능할 것으로 사료된다.

In this study, the biological activities and physicochemical properties of polysaccharides from Gloiopeltis furcata were investigated. Polysaccharides were isolated by enzymes treatment (celluclast, flavourzyme, papain, termamyl, viscozyme) followed by ethanol precipitation and lyophilization. The yield of polysaccharides by enzymes treatment group were 52.8-66.4%. The major constituents in viscozyme treatment group were total sugar (71.04%), protein (7.22%), uronic acid (23.18 g/100 g), and sulfate (28.27%), respectively. The DPPH radical scavenging activity and ferric reducing antioxidant potential of the viscozyme treatment group at 5 mg/mL were 23.10% and $218.50{\mu}M$, respectively. The protective effects against $H_2O_2$-induced cytotoxicity in L132 cell of viscozyme treatment group at $1{\mu}g/mL$ was 85.64%. The viscozyme treatment group increased the production of nitric oxide (NO) in a dose-dependent manner. The antitumor activity of viscozyme treatment group (at $25{\mu}g/mL$) in A549, HeLa, SNU719 and MCF7 was 69.57%, 52.74%, 61.06% and 68.64%, respectively. All of data showed that the biological activities and chemical characteristics of enzymes treatment group are higher than that of the control group. The polysaccharides isolated from Gloiopeltis furcata investigated herein are useful as functional materials agents.

키워드

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