Catechin, epicatechin gallate (ECG) and quercetin, as bioactive flavonoids, have been shown to possess anticarcinogenic effects. Ceramide plays an important role in killing tumor cells. Accordingly, the aim of this study was to clarify the involvement of these compounds in ceramide metabolism in A549 cancerous cell line. Spectrophotometer, cell culture and HPLC methods were used. Cell viability...

Background and Aims: During ageing in oak barrels, wine undergoes changes because of the release of polyphenols and other molecules from wood. The aim of this study was to evaluate the influence of some oak wood-derived volatile compounds, ellagic acid and oak wood extracts on the levels of (+)-catechin, procyanidin B1 and malvidin-3-glucoside. Methods and Results: Phenolics and the oak wood de...

OBJECTIVE To estimate flavonoid intake in the Australian population. DESIGN Flavonoid consumption was estimated from 24-hour recall data and apparent consumption data using US Department of Agriculture flavonoid composition data. SUBJECTS The National Nutrition Survey 1995 assessed dietary intake (24-hour recall) in a representative sample (n=13,858) of the Australian population aged 2 year...

Tea (Camellia sinensis) is rich in specialized metabolites, especially polyphenolic proanthocyanidins (PAs) and their precursors. To better understand the PA pathway in tea, we generated a complementary DNA library from leaf tissue of the blister blightresistant tea cultivar TRI2043 and functionally characterized key enzymes responsible for the biosynthesis of PA precursors. Structural genes en...

Phyllostachys nigra var. henosis, a domestic bamboo species, has been attracting much attention; its bioactive compounds (especially in the leaf) show antioxidant, anti-inflammatory, and anti-obesity activities. Little information is available on the antioxidative and anti-melanogenetic activities of the bioactive compounds in bamboo stems. The anti-melanogenic and antioxidative activities of t...

Flavonoid biosynthesis profile was clarified by fruit bagging and re-exposure treatments in the green Chinese pear 'Zaosu' (Pyrus bretschneideri Rehd.) and its red mutant 'Red Zaosu'. Two distinct biosynthesis patterns of flavonoid 3-glycosides were found in 'Zaosu' pear. By comparison with 'Red Zaosu', the biosynthesis of flavonoid 3-galactosides and flavonoid 3-arabinosides were inhibited by ...

Buckwheat (Fagopyrum esculentum Moench) noodles are a traditional food in Japan and contains catechin, epicatechin, quercetin, rutin and an oligomer of catechin and epicatechin. Catechin, epicatechin, quercetin and rutin have flavonoid structures, and their antioxidant action and neuroprotection have been widely studied. Buckwheat extract (BWE) has been also reported to have antioxidant activit...

Tea (Camellia sinensis) is rich in specialized metabolites, especially polyphenolic proanthocyanidins (PAs) and their precursors. To better understand the PA pathway in tea, we generated a complementary DNA library from leaf tissue of the blister blight-resistant tea cultivar TRI2043 and functionally characterized key enzymes responsible for the biosynthesis of PA precursors. Structural genes e...

Cinnamomum camphora methanolic extract was tested for antifungal activity against three common, isolated, widespread phytopathogens: Alternaria alternata, Fusarium solani, and oxysporum, which were molecularly identified assigned accession numbers ON795987, ON795988, ON795989, respectively. At 4000 µg/mL, the highest concentration of C. inhibits fungal mycelia weight F. A. solani by 60, 49, 24%...