• Title/Summary/Keyword: 항산화성

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Separation of Antioxidant Compounds from Edible Marine Algae (식용 해조류에서 항산화 물질의 분리)

  • Park, Jae-Han;Kang, Kyoo-Chan;Baek, Sang-Bong;Lee, Yoon-Hyung;Rhee, Kyu-Soon
    • Korean Journal of Food Science and Technology
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    • v.23 no.3
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    • pp.256-261
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    • 1991
  • To isolate new antioxidants from twelve edible seaweeds, mixed methanol and chloroform extract of marine algae was fractionated into several subfractions and their antioxidant activities were measured by using AOM and 1, 1-diphenyl-2-picrylhydrazyl (DPPH). Especially the aqueous-methanol soluble fractions of brown and red algae showed a considerable antioxidant effect. Their antioxidant activities were stronger than synthetic antioxidants such as BHA, BHT, under the same concentration. Further fractionation of the aqueous-methanol soluble fractions using silica gel column chromatography yielded five subfractions. Among them methanol fraction exhibited high DPPH quenching activities. Also, it was confirmed to be benzene-derivative substances of two compounds by UV, HPLC, GC/MS analysis. Its each molecular weight was about 181, 238. These results suggested the existence of two effective natural antioxidant compounds in three edible marine algae.

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Function of the Water Soluble Browning Reaction Products Isolated from Korean Red Ginseng 2. Linoleic acid, Ox-brain autoxidant and Fe$^{2+}$ ADP/NAD system (홍삼으로부터 분리한 수용성 갈변물질의 기능성 연구 2. Linoleic acid, Ox-brain autoxidant및 Fe$^{2+}$ ADP/NADP system에서 항산화 활성 중심으로)

  • 이종원;손형옥;도재호
    • Journal of Ginseng Research
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    • v.24 no.1
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    • pp.35-40
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    • 2000
  • The purpose of this study was to investigate the antioxidant activities of water soluble browning reaction products (WS-BRPs) isolated 5\ulcorneron korea red ginseng. Antioxidant activities of WS-BRPs were examined with the various systems. All three WS-BRPs (L, S-1 and S-2) were found to have an ability to linoleic acid, Ox-brain autoxidant, Fe$^{2+}$ ADP/NAD system and cumene hydroperoxide system. Especially, S-2 was had the strongest activity of theses three WS-BRPs to scavenge free radicals such as more effective than S-1, L. MDA determination showed the antioxidant effect on linoleic acid oxidation inhibition ratio of 22.5%, 31.7%, 31.9% and 33.5%, respectivity Especially; Ox-brain autoxidant was strong inhibited activity by 49.52%,62,44,97.54% by addition of various concentration. But three WS-BRPs showed weak inhibitory activity on lipid peroxidation in rat hepatic microsomes induced enzymatically and nonenzymaticallyly

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Extraction of Water Soluble Antioxidants from Seaweeds (해조류로부터 수용성 항산화 물질의 추출)

  • Lee, Bong Ho;Choi, Byoung Wook;Chun, Jong-Han;Yu, Byung-Soo
    • Applied Chemistry for Engineering
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    • v.7 no.6
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    • pp.1069-1077
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    • 1996
  • Water soluble antioxidants were extracted from various seaweeds and their antioxidative activities were measured to show that Monostroma nitidum has the highest antioxidant activity higher than that of the synthetic antioxidants, BHA or BHT among the samples. Other seaweeds such as Hizikia fusiformis showed antioxidant activity comparable to that of Monostroma nitidnm. It seems that many antioxidative components show the addative effect since the purification of the extract using Sephadex LH-20 or ODS reduced the activity.

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Antioxidative and Nitrite-scavenging Activities of Edible Mushrooms (버섯류의 항산화성 및 아질산염 소거작용)

  • Lee, Gee-Dong;Chang, Hak-Gil;Kim, Hyun-Ku
    • Korean Journal of Food Science and Technology
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    • v.29 no.3
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    • pp.432-436
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    • 1997
  • This study was conducted to investigate the functional characteristics of diethylether and butanol extracts from Ganoderma lucidum, Agaricus bisporus and Lentinus edodes. Electron donating abilities of diethylether and butanol extracts from Ganoderma luculum were 95.07% and 97.75%, respectively. Electron donating abilities of butanol extracts from Agaricus bisporus was 94.33%, and that of Lentinus edodes was 96.09%. Antioxidative activities of diethylether and butanol extracts from Canoderma lucidum were higher than those of BHA. All extracts of Agaricus bisporus and Lentinus edodes showed lower antioxidative activity than that of BHA. Nitrite-scavenging abilities of diethylether and butanol extracts from Ganoderma lucidum were 68.34% and 44.44%, respectively. Nitrite-scavenging abilities of butanol extracts from Agaricus bisporus were 43.39%, and those of Lentinus edodes were 68.23%.

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Changes in Chlorophylls and Carotenoids of Mustard Leaf Kimchi during Fermentation and Their Antioxidative Activities on the Lipid Oxidation (갓김치의 발효과정 중 Chlorophylls 및 Carotenoids의 변화와 동획분의 항산화성)

  • 송은승;전영수;최홍식
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.26 no.4
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    • pp.563-568
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    • 1997
  • Changes of chlorophylls and carotenoids and antioxidative characteristics of crude chlorophylls and carotenoids(CCC) of mustard leaf kimchi(MLK) were investigated during the fermentation at 15$^{\circ}C$ for 25 days. At the beginning of fermentation chlorophylls were decreased rapidly, however, all chlorophylls and chlorophyllides were converted to pheophytins and pheophorbides at the final stage of fermentation. Total chlorophyll content remained constantly during the fermentation but 43.7% destruction of carotenoids was observed at 25 days of fermentation. Antioxidative activities of CCC from MLK against autoxidation of linoleic acid were significant(p<0.05) and much higher than those of $\alpha$-tocopherol. Fermentation period did not affect antioxidative activities of CCC of MLK. When the CCC of MLK was added to the autoxidation system of linoleic acid, degradation of total chlorophylls were observed to be slower than that of total carotenoids.

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Antioxidative Activity of Solvent Fraction and Isolation of ANtioxidative Compound from Chestnut Husk (밤 귀피의 용매분획별 항산화 활성과 항산화 물질의 분리)

  • 권은정;김영찬;권미선;김창섭;강우원
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.30 no.4
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    • pp.726-731
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    • 2001
  • To enhance the utilization of chestnut husk discarded in the processing company antioxidative activities and compounds were investigated. Antioxidative activities of solvent fractions from chestnut husk were examined by benzoic acid hydroxylation method ferric thiocyanate method and DPPH test. Ethyl acetate fraction showed strong antioxidative activities comparable to BHA. Active compounds were isolated and purified from ethyl acetate fraction by Sephadex LH-20 column chromatography and preparative HPLC. A major active compound gallic acid was identified by $^{1}$H and $^{13}$ C-NMR. The phenolic acid contents was analyzed by GC and ellagic acid (172.22 mg%) and gallic acid (107.39 mg%) were major phenolic acid of chestnut husk.

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커피의 볶음 강도에 따른 이화학적, 관능적 특성 및 항산화성 변화

  • 서한석;황인경
    • Proceedings of the Korean Society of Food and Cookery Science Conference
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    • 2003.10a
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    • pp.95-95
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    • 2003
  • 본 연구에서는 아라비카종 커피 원두(Colombia Superimo)를 반열풍식ㆍ배치식 드럼 로스터를 사용하여 볶음강도를 강(full city roast), 중(high roast), 약(medium roast)으로 달리하였을 때 이화학적, 관능적 특성 및 항산화성이 어떻게 변화하는지를 알아보았다. 또한 이를 실제 음용 상태에서 측정하고자 가정용 커피메이커를 사용하여 추출한 커피를 시료로 이용하였다. 실험결과 일반성분에 있어서, 수분함량은 볶음 강도가 커질수록 감소하였으며 조 단백질은 볶은 후 약간 감소하였다. (중략)

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여성의 갱년기 증상과 혈중 총항산화능 및 식이섭취와의 관련성 분석

  • 김순경;연보영;선우재근
    • Proceedings of the KSCN Conference
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    • 2004.05a
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    • pp.422.2-423
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    • 2004
  • 폐경을 전ㆍ후한 여성들의 갱년기 증상과 혈중 총항산화능과의 관련성 및 총항산화능에 영향을 미치는 식사요인을 알아보기 위하여 45-55세 여성(평균 연령 48.89 $\pm$ 3.64세, 신장 156.27 $\pm$ 4.77 cm, 체중 60.90 $\pm$ 6.89 Kg, BMI 24.96 Kg/$m^2$) 105명을 대상으로 갱년기 증상의 유ㆍ무에 관한 사항, 신체계측 및 식이섭취 상태등에 관한 조사와 혈중 총항산화능을 비롯한 생화학적 지표들을 측정하였다.(중략)

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Identification of Phenolic Antioxidative Components in Crataegus pinnatifida Bunge (산사 항산화성 물질의 분리 및 동정)

  • Kim, Jeong-Sook;Lee, Gee-Dong;Kwon, Joong-Ho;Yoon, Hyung-Sik
    • Applied Biological Chemistry
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    • v.36 no.3
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    • pp.154-157
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    • 1993
  • Based upon the antioxidative effectiveness of ether extracts of defated Crataegus pinnatifida B., phenolic antioxidative components were separated by gel column chromatography and identified by MS and H-NMR. Two or three individual compounds were found in free, soluble and insoluble bound phenolic acids, respectively and they were identified as caffeic acid, protocatechuic acid, phloroglucinol and pyrogallol.

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