Proton Beam Sensitivity of Radical Scavenging Activity from Plant Resources

식물자원의 양성자 빔 조사에 대한 라디칼 소거능활성의 민감도

  • Published : 2009.09.30

Abstract

20 species of plants were extracted with Methanol and were investigated for DPPH radical scavenging activity and ABTs free radical scavenging activity to quest anti-oxidation ability depending on the proton beam irradiation quantity. In the proton beam irradiation, 15 species's activities increased but among them, Pharbities nil Choisy decreased at 10 KGray and 4 species' activity didn't change at all. In hydrogen ion radical elimination activity, Ulmus macrocarpa (84 %) showed the highest and Pharbitis nil Choisy showed 6 % decreasing at more than 1 KGray. By comparison with untreated $IC_{50}$ value, the beam-treated $IC_{50}$ value increased 6.3 times for Dioscorea batatas Decne. at 1 KGray, 2.1 times for Trichosanthes kirilowii Max., and 2.8 times for Dioscorea batatas Decne. at 5 KGray. In ABTs free radical elimination activity, the activity increased 60 % for Terminalia chebula Retzius compared with untreated one. Besides, the beam-treated $IC_{50}$ value increased 2 times for Gray Ephedra sinica Stapf, 2.5 times for Terminalia chebula Retz. and 2.4 times for Arctium lappa Linne at 1 KGray.

식물 20종을 메탄올로 추출하여 양성자 빔 조사 에너지양(1, 5, 10 KGray)에 따른 항산화 활성 능을 탐색 하고자 DPPH 라디칼 소거활성과 ABTS free 라디칼 소거 활성에 대하여 조사하였다. 양성자 빔 조사 시 15종류는 활성이 증가하였으나 10 KGray에서 흑축(Pharbitis nil Choisy)은 활성이 감소하였으며, 4종류는 활성변화가 없었다. DPPH 라디칼 소거활성은 1 및 5 KGray에서 유근피(Ulmus macrocarpa) (84 %), 10 KGray (85 %)로 가장 높았으나 10 KGray에서 흑축(Pharbitis nil Choisy)은 6 % 감소하였다. $IC_{50}$값을 무처리구와 빔 조사량에 대한 활성을 비교하면 1 KGray에서 산약(Dioscorea batatas Decne.) 6.3배, 5 KGray에서 천화분(Trichosanthes kirilowii Max.) 2.1배, 산약(Dioscorea batatas Decne.) 2.8배 증가하였다. ABTS free 라디칼 소거활성에서 1 KGray의 양성자 빔 에너지를 조사 했을 경우, 가자(Terminalia chebula Retzius)는 60 % 증가하였다. $IC_{50}$값은 1 KGray 빔 조사 시 0 KGray보다 마황근(Ephedra sinica Stapf) 2.0배, 가자(Terminalia chebula Retz.) 2.5배, 우방자(Arctium lappa Linne) 2.4배 증가하였다.

Keywords

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