Inhibitory Activity on Angiotensin Converting Enzyme and Antioxidant Activity of Hovenia dulcis Thunb. Cortex Extract

헛개나무의 Angiotensin 전환 효소 저해 및 항산화 활성

  • Published : 2004.03.31

Abstract

To develop a new functional materials, angiotensin converting enzyme (ACE) inhibitory activity, antioxidant effect and total phenolic content of Hovenia dulcis Thunb. cortex were evaluated. Methanol and water extract of H. dulcis inhibited ACE by 81% and 76%, respectively, at the concentration of $4,000\;{\mu}g\;m{\ell}^{-1}$ which were similar level with that (85%) of commercial peptide-type ACE inhibitor. Superoxide radical scavenging activity of two extracts $(99.5%{\sim}99.9%)$ were stronger than that (69%) of ascorbic acid at the final concentration of $200\;{\mu}g\;m{\ell}^{-1}$. Among the solvent fractions, ether and ethylacetate fraction showed also potent scavenging activities (91% and 85%) for superoxide radical. Inhibitory activities of two extracts on oxidation of human low density lipoprotein (LDL) which were similar with that of ${\alpha}-tocopherol$, were higher than 80% at the concentration of $50\;{\mu}g\;m{\ell}^{-1}$. Total phenol contents of methanol and water extracts were 7.2% and 3.6%, respectively, and that of ethylacetate showed the highest value as 60.8% among the solvent fractions. Therefore, it has been suggested that H. dulcis cortex could be a effective anti-hypertention and antioxidant resource to develope a new functional material.

식물 유래 기능성 식품 소재발굴을 위한 기초연구의 일환으로 헛개나무 수피의 항고혈압, 항산화 활성과 총페놀화합물의 함량을 분석하였다. 헛개나무 수피 메탄올 추출물과 물 추출물의 ACE 효소 저해 활성은 $4,000\;{\mu}g\;m{\ell}^{-1}$의 농도에서 각각 81.1% 및 75.8%였으며, 용매별 분획물중에서는 에테르 분획 및 에틸아세테이트 분획이 각각 66.6% 및 75.9%로 높은 효과를 나타내었다. Superoxide 라디칼 소거능은 메탄올 추출물과 물 추출물이 $200\;{\mu}g\;m{\ell}^{-1}$의 농도에서 모두 99.5%이상의 활성을 보여 매우 우수하였으며, 분획물 중에서는 에틸아세테이트 및 에테르 분획이 90.8% 및 85.3%로 높은 효과를 나타내었다. DPPH 라디칼 소거능은 에틸아세테이트 분획 $(RC_{50},\;30.9{\mu}g\;m{\ell}^{-1})$이 실험된 조추출물 및 분획물들 중 가장 우수한 것으로 확인되었고 사람 저밀도지단백질 (LDL)의 산화에 대해 헛개나무 수피 조추출물은 $50\;{\mu}g\;m{\ell}^{-1}$이상의 농도에서 80% 이상의 저해효과를 나타내었다. Linoleic acid의 자동산화에 대한 항산화 효과는 $25\;{\mu}g\;m{\ell}^{-1}$의 농도에서 반응 5일째까지 메탄을 추출물이 ${\alpha}-tocopherol$보다 더 우수한 저해활성을 나타내었으며 총 페놀 함량은 메탄올 및 물 추출물이 7.2% 및 3.6%를, 분획물 중에서는 에틸아세테이트 분획이 60.8%로 조추출물 및 분획물 중에서 가장 높은 함량을 보였다.

Keywords

References

  1. An BJ, Lee JT (1999) Isolation and characterization of angiotensin converting enzyme inhibitors from Camellia sinensis L. and their chemical structure determination. Food Sci. Biotechnol. 8:285-289
  2. An SW, Kim YG, Kim MH, Lee BI, Lee SH, Kwon HI, Hwang B, Lee HY (1999) Comparison of hepatic detoxication activity and reducing serum alcohol concentration of Hovenia dulcis Thunb, and Ainus japonica Steud, Korean J. Medicinal Crop Sci. 7:263-268
  3. Cho JY, Moon JH, Park KH (2000) Isolation and identification of 3-methoxy-4-hydroxybenzoic acid and 3-methoxy-4-hydroxycinnamic acid from hot water extracts of Hovenia dulcis Thunb, and confirmation of their anti oxidative and antimicrobial activity. Korean J. Food Sci. Technol. 32:1403-1408
  4. Cushman DW, Cheung HS (1973) Inhibition of homogenous angiotensin-converting enzyme of rabbit lung by synthetic venom peptides of Bothrops jararaka. Biochim, Biophys. Acta. 293:453
  5. Esterbauer H, Martina DR, Stiegl G, Waeg G (1991) Role of vitamin E preventing the oxidation of low-density lipoprotein. Am. J. Clin. Nutr, 53:314S-321S https://doi.org/10.1093/ajcn/53.1.314S
  6. Hussain RA, Lin YM, Poveda LJ, Bordas E, Chung BS, Pezzuto JM, Soejabto DD, Kinghorn AD (1990) Plant-derived sweetening agents : saccharide and polyol constituents of some sweet-tasting plants. J. Ethnopharmacology 28:103-115 https://doi.org/10.1016/0378-8741(90)90067-4
  7. Kim NM, Sung HS, Kim WJ (1993) Effect of solvents and some extraction conditions on antioxidant activity in cinnamon extracts. Korean J. Food Sci. Technol, 25:204-209
  8. Kim KM, Suh HJ, Chung SH, Cho WD, Ma SJ (1999) Chemical structure of angiotensin converting enzyme inhibitor isolated from onion flesh. Food Sci. Biotechnol. 8:329-332
  9. Kim OK (2001) Protective effects of extracts of Hovenia dulcis Thunb, on hepatotoxicity in carbon tetrachloride intoxicated rats. J. Korean Soc. Food Sci. Nutr, 30:1260-1265
  10. Lee MK, Kim YG, An SW, Kim MH, Lee JH, Lee HY (1999) Biological activities of Hovenia dulcis Thunb. Korean J. Medicinal Crop Sci. 7:185-192
  11. Lee SE, Seong NS, Park CG, Seong JS (2002) Screening for antioxidative activity of oriental medicinal plant materials. Korean J. Medicinal Crop Sci. 10:171-176
  12. Lee SE, Seong NS, Bang, JK, Kang SW, Lee SW, Chung TY (2003) Inhibitory effect against angiotensin converting enzyme and anitoxidant activity of Panax ginseng C. A. Meyer extracts. Korean J. Medicinal Crop Sci. 11:236-245
  13. Lieber CS (2001) Alcoholic liver injury: pathogenesis and therapy in 2001. Pathol, Biol, 49:738-752 https://doi.org/10.1016/S0369-8114(01)00239-5
  14. Nishikimi N, Rao NA, Yagi K (1972) The occurrence of superoxide anion in the reaction of reduced phenazinc rnethosulfate and molecular oxygen. Biochem. Biophys. Res. Commun. 46:849-854 https://doi.org/10.1016/S0006-291X(72)80218-3
  15. Noh R, Song KB (2001) Isolation of an angiotensin converting enzyme Inhibitor from Oenanthe javanica. Agric. Chem. Biotechnol, 44(2):98-99
  16. Oh SJ, Kim SR, Kim SK, Baek YJ, Cho KH (1997) Angiotensin I -converting enzyme inhibitory activity of the -casein fragments hydrolyzated by chymosin, pepsin, and trypsin. Korean J. Food Sci. Technol. 29:1316-1318
  17. Takaii M, Ogihara Y, Shibata S (1973) New peptide alkaloids from Hovenia dulcis and H. tormen tella, Phytochemistry 12:2985-2986 https://doi.org/10.1016/0031-9422(73)80519-9
  18. Torel J, Cillard J, Cillard P (1986) Antioxidant activity of flavonoids and reactivity with peroxy radical. Phytochemistry 25:383-385 https://doi.org/10.1016/S0031-9422(00)85485-0
  19. Vinson JA, Dabbagh YA, Sery MM, Jang J (1995) Plant flavonoids, especially tea flavonols, are powerful antioxidants using an in vitro oxidation model for heart disease. J. Agric. Food Chem. 43:2800-2802 https://doi.org/10.1021/jf00059a005
  20. Yang KS, Sim JM (1997) Effect of Arctii fructus on low density lipoprotein oxidation. Koean. J. Pharmacogn. 28:275-279
  21. 지형준, 이상인 (1988) 대한약전외 한약 (생약) 규격집 주해서. 한국메디칼 인덱스사. p. 347