نتایج جستجو برای: protocatechuic acid
تعداد نتایج: 747494 فیلتر نتایج به سال:
Characterization of the Protocatechuic Acid Catabolic Gene Cluster from Streptomyces sp. Strain 2065
The modifying effect of dietary protocatechuic acid (PCA) given during the initiation phase or the postinitiation phase on liver carcinogenesis induced by diethylnitrosamine (DEN) was studied in male F344 rats. At 6 weeks of age, rats were divided into experimental and control groups and fed the diets containing 500 and 1000 ppm PCA or the basal diet. At 7 weeks of age, all animals except PCA a...
Phenols are broadly distributed in the plant kingdom and are the most abundant secondary metabolites of plants. Plant polyphenols have drawn increasing attention due to their potential antioxidant properties and their marked effects in the prevention of various oxidative stress associated diseases such as cancer. The objective of this study was to investigate a suitable method for determination...
Barringtonia racemosa is a tropical plant with medicinal values. In this study, the ability of the water extracts of the leaf (BLE) and stem (BSE) from the shoots to protect HepG2 cells against oxidative damage was studied. Five major polyphenolic compounds consisting of gallic acid, ellagic acid, protocatechuic acid, quercetin and kaempferol were identified using HPLC-DAD and ESI-MS. Cell viab...
A free and liberated by acid and alkaline hydrolysis phenolic acids from the hips of fourteen species of wildly growing roses were identifed and determined using SPE RP HPLC method. Eleven major phenolic acids (gallic, protocatechuic, gentisic, p-hydroxybenzoic, vanillic, caffeic, syringic, p-coumaric, ferulic. p-hydroxyphenylacetic, salicylic) were quantitatively investigated. The amount of in...
The present study investigates the antioxidant, anticancer, anticholinesterase, anti-genotoxic activities and phenolic contents of flower, fruit and seed methanol extracts of Hypericum retusum AUCHER. The amounts of protocatechuic acid, catechin, caffeic acid and syringic acid in methanol extracts were determined by HPLC. Total phenolic content of H. retusum seed extract was found more than fru...
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