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印度蜂蜜提取物中的酚类化合物的抗氧化活性及α淀粉酶抑制活性研究(英文) 被引量:2
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作者 Subashini Devarajan Subhashree Venugopal 《中国天然药物》 SCIE CAS CSCD 2012年第4期255-259,共5页
AIM:To evaluate the antioxidant and α-amylase inhibition potential of phenolic compounds in the extracts of Indian honey.METHODS:Phenolic compounds were extracted from Indian honey through column chromatography.The a... AIM:To evaluate the antioxidant and α-amylase inhibition potential of phenolic compounds in the extracts of Indian honey.METHODS:Phenolic compounds were extracted from Indian honey through column chromatography.The antioxidant poten-tial of extracted phenolic compounds was measured by two different biochemical assays:ferric reducing antioxidant power(FRAP) assay and scavenging activity on 2,2-diphenyl-1-picrylhydrazyl(DPPH) radicals.Moreover,α-amylase inhibition assay of phenolic compounds of honey was also evaluated.RESULTS:The scavenging inhibition rate varied from 86.8% to 78.6% from the highest(6 mg·mL-1) to the lowest(1.5 mg·mL-1) concentration,whereas,reducing power assay varied from 0.89 Abs to 0.19 Abs from the highest to the lowest concentration.Butylated hydroxytoluene(BHT) was used as reference compound for antioxidant assays.α-amylase inhi-bition assay is reported from the phenolic honey extracts for the first time.The inhibition rate for α-amylase varied from 88.8% to 30.5% from the highest(20 μg·mL-1) to the lowest concentration(4 μg·mL-1).CONCLUSION:Honey phenolic extract possessed antioxidant and α-amylase inhibition activity,thus increasing its potential therapeutic property. 展开更多
关键词 HONEY Phenolic compounds Antioxidant activity dpph and frap α-Amylase inhibition activity
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毛竹竹笋及笋壳提取物抗氧化活性的研究
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作者 武静文 袁艺 +1 位作者 王文文 袁彩红 《天然产物研究与开发》 CAS CSCD 2010年第B08期194-197,126,共5页
分别对毛竹春笋及笋壳的醇提物的抗氧化活性进行测定。结果表明:醇提物含量与自由基清除能力、相对还原能力、总抗氧化能力成正相关。DPPH·清除率为Vc〉笋壳〉竹笋。OH·清除率为竹笋〉Vc〉笋壳。O2^清除率为Vc〉笋壳〉竹笋。... 分别对毛竹春笋及笋壳的醇提物的抗氧化活性进行测定。结果表明:醇提物含量与自由基清除能力、相对还原能力、总抗氧化能力成正相关。DPPH·清除率为Vc〉笋壳〉竹笋。OH·清除率为竹笋〉Vc〉笋壳。O2^清除率为Vc〉笋壳〉竹笋。1mg/mL竹笋的FRAP值为63.3txmo/L,1mg/mI.笋壳的FRAP值为353.8μmol/L。1mg/mL的竹笋粗提物的相对还原能力为27.9%,1mg/mL笋壳的相对还原能力为60.0%。试验表明,相比于竹笋,笋壳醇提物的抗氧化能力较强。 展开更多
关键词 毛竹竹笋 笋壳dpph·frap 相对还原能力
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