In a recent publication1 we reported on the isolation and identification of flavonoids and cinnamic acid derivatives from spinach chloroplast preparations. These cinnamic acid derivatives and flavonoids are obtained as low molecular fractions I and II from a water extract — called S^eth — from ether treated lyophilized chloroplasts, which is assumed to contain functional components of the photo...

In the research it was examined the changes in total phenolic contents and seven major phenolic compounds (gallic acids, +(−) catechin, catechol, Chlorogenic acid, o-coumaric acid, rutin and quercetin) of two litchi cultivars (Purbi and Bedana) shoot tips and fruits (for zygotic embryos) collected in different months, in order to determine their effects on the explants browning during establish...

Caffeic acid is a biologically active molecule that has various beneficial properties, including antioxidant, anticancer, and anti-inflammatory activities. In this study, we explored the catalytic potential of a bacterial cytochrome P450, CYP199A2, for the biotechnological production of caffeic acid. When the CYP199A2 enzyme was reacted with p-coumaric acid, it stoichiometrically produced caffe...

Previous investigations have shown that CY4-labeled transcinnamic acid is rapidly converted to o-coumaric acid P-glucoside by shoots of Melilotus alba (white sweet clover) (1) and Hierochlod odorata (sweet grass) (2). This glucoside is then converted to coumarin (l-3), possibly by way of trans-cis isomerization of the glucoside to coumarinic acid P-glucoside. The small amount of radioactivity f...

Radical scavenging capacity of a crude methanolic extract from the fruits of Phillyrea latifolia L., commonly known as green olive tree or mock privet, was investigated with reference to anthocyanin standards, as flavonoids, and phenolic acid standards, as phenylpropanoids. Characterization with high performance liquid chromatography-diode array detection (HPLC-DAD) indicated the presence of ke...

Phalaenopsis spp. is the most commercially and economically important orchid, but their plant parts are often left unused, which has caused environmental problems. To date, reports on phytochemical analyses were most available on endangered and medicinal orchids. The present study was conducted to determine the total phenolics, total flavonoids, and antioxidant activity of ethanol extracts prep...

Antennaria dioica ( Asteraceae family) – is a perennial herb, commonly found in dry grasslands and sandy or stony places from Eurasian areas. It known traditional medicine as antioxidant, diuretic, choleretic anti-inflammatory remedy. This species should be reconsidered possible sources of phenols, mainly flavonoids hydroxycinnamic acids. Thus, the aim this study was to validate chromatographic...

Abstract This study provides an efficient alternative by extracting bioactive compounds from Haematococcus pluvialis via matrix solid-phase dispersion (MSPD) its wet form, reducing one of the process steps with greatest economic impact, drying microalga. To obtain a suitable extract for nutraceutical purposes, solvents generally recognised as safe (GRAS) designation (ethanol, ethyl lactate, and...

Cider apple cultivars typically contain high concentrations of tannins (phenolic compounds) and/or acids. The phenolic content some cider apples far exceeds that white wine grapes, yet modern global styles are often fermented using yeast strains originally selected and commercialized for production. potential compounds in juice to influence fermentation rate or aromas generated during is not co...