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Antioxidant potential,tannin and polyphenol contents of seed and pericarp of three Coffea species

Asian Pacific Journal of Tropical Medicine 2016年第4期9卷 356-362页

作者： va Brigitta Patay nikolett sali Tams Kszegi Rita Csepregi Viktória Lilla Blaz Tibor Sebastian Németh Tibor Németh Nóra Papp Institute of Pharmacognosy Medical SchoolUniversity of PcsRókus 2.PcsHungary7624 Department of Laboratory Medicine Medical SchoolUniversity of PcsIfjúsg 13 PcsHungary76243 Jnos Szentgothai Research Center Ifjúsg 20 PcsHungary.76244 Department of Pharmacognosy Faculty of Medicine and PharmacyUniversity of Oradea

Objective:To investigate the antioxidant activity,total phenolic and total tannin content of the pericarp and the seed of Coffea benghalensis(***) and Coffea liberica compared to Coffea arabica(***).Methods:The antioxidant potential,total tannin and polyphenol contents of the immature and mature seed and pericarp of *** and Coffea liberica were quantified and compared to *** chemiluminescence(ECL).2,2-diphenyl-1-picrylhydruzyl(DPPH).oxygen radical absorbance capacity,Folin-Ciocaltcau method and total tannin content assays were ***:Trolox equivalent(TE/g plant material) values obtained by ECL and DPPH methods showed loose correlation(r^2=0.587)while those measured by oxygen radical absorbance capacity assay were higher without correlation in each plant.A closer correlation was detected between the ECL method and the percentage antioxidant activity of the DPPH technique(r^2=0.610 7) in each species,however the immature pericarp of *** showed much higher DPPH scavenging potential than was seen in the ECL *** immature pericarp of *** expressed the highest tannin and polyphenol content,and a high polyphenol level was also detected in the immature seed of *** immature pericarp of Bengal and Liberian coffees showed the largest amount of phenolic ***:The obtained data highlight the potential role of *** as a new source of natural antioxidants and polyphenols compared to ***.

关键词： Coffee 2,2-diphcnyl-1-picrylhydrazyl Enhanced chemiluminescence Folin-Ciocalteau Oxygen radical absorbance capacity Total tannin method

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