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Comparison of composition and antioxidant activity of Poria cocos Wolf cultivated in a mortuary and cemetery

시설 및 토경재배 복령의 시기별 성분 및 항산화 활성

  • Kim, Jin-Yoon (Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, Kyungpook National University) ;
  • Lee, Hwa-Yong (Enputech. Co., ltd.) ;
  • Jo, Woo-Sik (Gyeongbuk Province Agricultural Technology Administration) ;
  • Park, Seung-Chun (Laboratory of Veterinary Pharmacology, College of Veterinary Medicine, Kyungpook National University)
  • Received : 2018.05.03
  • Accepted : 2018.06.29
  • Published : 2018.06.30

Abstract

This study was conducted to compare the composition and antioxidant activity of 1- and 2-year-old Poria cocos Wolf cultivated at a mortuary and cemetery. An elemental analyzer test showed oxygen, carbon, hydrogen, nitrogen, and sulfur to be present at concentrations of 45~46%, 39~41%, 6.06~6.1%, 0.21~0.22%, and 0%, respectively. No differences in composition were observed among samples. Eleven minerals (S, Ca, Mg, P, As, Se, Cu, Fe, Pb, Zn, and Cd) found in P. cocos cultivated at the mortuary and cemetery were analyzed by inductively coupled plasma mass spectrometry (ICP). The levels of S, Fe, Mg, and Zn in P. cocos were higher in cemetery-cultivated samples than in mortuary-cultivated samples. A 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay for antioxidant activity revealed half-maximal inhibitory concentration ($IC_{50}$)values of P. cocos to be 8.601 mg/mL (mortuary, 1 year old), 12.85 mg/mL (cemetery, 1 year old), 1.23 mg/mL (mortuary, 2 years old), and 1.18 mg/mL (landfill, 1 year old). A 2,2'-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) assay revealed $IC_{50}$ values of 15.85 mg/mL (mortuary, 1 year old),14.59 mg/mL(cemetery, 1 year old), 3.9 mg/mL (mortuary, 2 years old), and 14.92 mg/mL (cemetery, 1 year old). The results showed a concentration-dependent effect. Two-year-old mortuary-cultivated P. cocos had the highest antioxidant activity among samples. Ultrastructure analysis with a field emission scanning electron microscope (FE-SEM) showed no obvious differences among samples.

본 연구에서는 시설재배와 토경(매립) 복령의 성분 분석 및 생리활성 비교를 위해 연구하였다. 일반성분 분석 결과 산소가 45~46%로 가장 많이 포함하고 있었으며 다음으로 39~41%의 탄소, 6.06~6.1% 수소, 0.21~0.22% 질소로 나타났다. 그리고 시험을 실시한 복령 모두에서 황 성분은 발견되지 않았다. 시설 및 토경 재배 복령을 ICP 분석법으로 11종의 무기질을 분석한 결과 S, Fe, Mg, Zn의 함유량은 1년차, 2년차 모두 토경 재배 복령이 시설 재배 복령보다 많았으며 특히 Fe와 Zn의 함유량은 각각 약 3.1~4.9배, 3.6~3.9배 높았다. 50% 에탄올 복령 추출물의 DPPH와 ABTS radical 소거활성과 FRAP 방법을 실행하여 항산화 효과를 알아보았다. 복령 추출물 10 mg/ml의 농도에서 시설 및 토경 재배 복령의 DPPH $IC_{50}$ 값은 1년산 시설 재배(8.601mg/mL), 1년산 토경 재배(12.85mg/mL), 2년산 시설 재배(1.23mg/mL), 2년산 토경 재배(1.18 mg/mL)로 나타났으며 ABTS $IC_{50}$값은 1년산 시설 재배(15.85 mg/mL), 1년산 토경 재배(14.59 mg/mL), 2년산 시설 재배(3.9 mg/mL), 2년산 토경 재배(14.92 mg/mL)로 계산되었다. 연구에 사용한 복령의 항산화 활성은 농도 의존적인 증가를 보였고 2년산 시설 재배 복령이 가장 높은 항산화 활성을 나타냈다. FE-SEM을 이용하여 복령 입자의 초미세구조를 관찰한 결과 샘플간의 뚜렷한 차이점은 발견되지 않았다.

Keywords

References

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