| Studies on the Flavonoids and Antioxidant Activities in Leaves of Black Currant |
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| 作者姓名： | XU Ya qin YU Ze yuan WU Fei |
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| 作者单位： | Northeast Agricultural University，Harbin，Heilongjiang，150030，PRC |
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| 摘 要： | 1 Introduction Flavonoids are polyphenolic compounds occurring ubiquitously in plants and are commoncomponents in human diet.Over 40 0 0 differentflavonoids have been described and this list isstill growing.Flavonoids possess multiple biological effects such as antivirus,anticancino-gens,antidecrepitude and so on(Hollman,et al .1 996 .) .Besides,flavonoids have been em-phasized widely for the antioxidantactivities of inhibiting oxidation of lipid and gross food ef-fectively,pledging the s…
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Studies on the Flavonoids and Antioxidant Activities in Leaves of Black Currant |
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| XU Ya qin,YU Ze yuan,WU Fei.Studies on the Flavonoids and Antioxidant Activities in Leaves of Black Currant[J].Journal of Northeast Agricultural University,2002,9(2). |
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| Authors: | XU Ya-qin YU Ze-Yuan WU Fei |
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| Abstract: | The fresh leaves and oven dried leaves from three varieties of black currant (Brodtrop,liangye,Risager)were analysed for the total contents of flavonoids by spectrophotometric methods in terms of rutin equivalent.In addition,antioxidant activities of different addition amounts of extracts of black currant (Brodtrop)leaves in lard were measured by the Oven-Storage Test,and compared with the synthetic antioxidants.The results showed the contents of the flavonoids were very rich in the leaves of three varieties from black currant.Among them the leaves of Brodtrop had the highest contents of flavonoids followed by liangye and Risager.The total contents of flavonoids in fresh leaves reach 231 70 mg/100 g,170 01 mg/100 g and 78 07 mg/100 g respectively.In the same circumstance the oven dried leaves were 397 82 mg/100 g,275 89 mg/100 g and 169 73 mg/100 g.The extracts of the leaves from Brodtrop exhibited strong antioxidant activities on lard,which increased with the addition amount of the flavonoid extracts.The antioxidant activities decreased in the order of 0 02% quercetin >0 02% BHT(butylated hydroxy toluene)>0 40% extracts>0 20% extracts>0 10% extracts>0 05% extracts>0 02% extracts>control. |
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| Keywords: | leaves of black currant varieties flavonoid contents lard antioxidant activity |
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