Tomato, as a fresh or processed product, has a high nutritional value due to its content of bioactive components such as phenolic compounds. Few studies describe the effect of processing on antioxidant content and the cancer cell growth inhibition activity. In this study we determined the phenolic and ascorbic acid content of three yellow tomato varieties, before and after thermal processing. M...

The present study was designed to investigate the phytochemical screening, the free radical scavenging activity and to determine the total phenolic content of methanolic extract and different solvent soluble fractions of Averrhoa bilimbi Linn. (Oxalidiaceae) fruits. The free radical scavenging activity was evaluated by analyzing the bleaching rate of 1,1diphenyl-2-picrylhydrazyl (DPPH), and tot...

Purpose: the non-edible fruit parts of Casimiroa edulis Llave et were evaluated for their active constituents and their potential as antioxidants, anti-inflammatory and antitumor activity. Methods: Fruits peel (FP) and seeds kernel (SK) of Casimiroa edulis Llave et Lex. were extracted successively with hexane and then methanol. Fatty acids were prepared from hexane extracts and identified by GC...

Arfan M., Amin H., Karamać M., Kosińska A., Wiczkowski W., Amarowicz R. (2009): Antioxidant activity of phenolic fractions of Mallotus philippinensis bark extract. Czech J. Food Sci., 27: 109–117. Phenolic compounds were extracted from Mallotus philippinensis bark using methanol. Six fractions (I–VI) were separated from the extract on a Sephadex LH-20 column using ethanol and acetone-water as t...

This work aims to study the impact of solvent mixture (between 0 and 50% ethanol/water mixture) and temperature (between 25°C and 75°C) levels on the solid-liquid extraction of phenolic compounds (quantity and bioactivity) from apricot pomace. Results show that the mean augmentation of 1% ethanol in the range [0-12%] enhances by three times the extraction of polyphenols compared to the same aug...

PURPOSE Syrah red grapes are used in the production of tannin-rich red wines. Tannins are high molecular weight molecules, proanthocyanidins (PAs), and poorly absorbed in the upper intestine. In this study, gut microbial metabolism of Syrah grape phenolic compounds was investigated. METHODS Syrah grape pericarp was subjected to an enzymatic in vitro digestion model, and red wine and grape ski...

plants are rich source of phenolic compounds (phenolic acids, flavonoids and tannins) that are most important natural antioxidants. in the present study two ultrasonic methods including probe and bath were used for the extraction of phenolic and flavonoid compounds from celtis australis. the effects of different extraction time including 30, 60 and 90 min (bath method) and 5, 10 and 20 min (pro...

Campomanesia sessiliflora O. Berg is a medicinal plant that object of very few studies in the literature. In this context, antioxidant activity, sun protection factor (SPF) and toxicity Artemia salina Leachs were analysed, as well contents phenolic compounds, flavonoids tannins aqueous extracts prepared by infusion maceration C. leaves. Maceration showed higher levels compounds regarding two sa...