식물 추출물이 어유의 산화 안정성에 미치는 영향
Study on Antioxidative Activity of Plant Extracts in Fish Oil
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참고문헌
초록
식물 추출물들의 어유에 대한 항산화력을 rancimart test, 과산화물가, TBA, DPPH소거능을 이용하여 알아보고자 하였다. 44종 식물추출물을 1,000 ppm 첨가한 어유를 선 실험하여 대조구보다 induction period가 약 1.5~3.1배 증가된 결과를 보인 추출물 7종을 선별하여 주된 실험 시료로 사용하였다. 농도별(100, 200, 300, 500, 700, 1,000 ppm) rancimat test 결과 감자 추출물이 가장 연장된 induction period를 보였으며 붉나무는 첨가량에 따른 높은 증가율을 보였다. 과산화물가와 TBA에서 감자와 붉나무의 항산화력이 보였으며, DPPH 소거능에서는 붉나무의 활성이 높게 나타났다.
Abstract
Extracts from forty four species of natural plants in Korea were obtained. Each extract (1,000 ppm) was added into fish oil and their antioxidative activities were screened by rancimat. From the results, seven species including Brassica juncea, Solanum tuberosum, Capsella bursa, Ulmus davidiana, Broussonetia kazinoki, Oenanthe javanica, and Rhus chinensis were selected due to their relatively prolonged induction periods. When the concentration (100 - 1,000 ppm) of the selected extracts was considered, the most prolonged induction period was observed from Solanum tuberosum throughout the studied concentrations, suggesting that its extract showed the strongest antioxidative activity against fish oil. In addition, peroxide value (POV) and thiobarbituric acid reactive substance (TBARS) value were considered at 60℃ for 5 days. Among the selected extracts, extract from Solanum tuberosum showed the least POV while the extract from Brassica juncea var showed the least TBARS values after 5 days. Also, the free radical scavenging effects against DPPH radical were studied with the selected extracts, showing that the extract from Rhus chinensis was found to be the most effective.
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