In this thesis the chemical composition of heartsease (Viola tricolor L.) was studied to support the evidence-based determination of its biological activities. Henceforth, a proper sample preparationmethodwas developed, yielding a fraction rich on polar constituents (characteristic of the traditionally applied aqueous extract), which was further separated by conventional Sephadex LH-20 column c...

Flavonoids are secondary metabolites that play important roles in plant physiology. Despite numerous studies examined the effects of available carbon (C) or nitrogen (N) on flavonoid biosynthesis, the mechanism of C/N interactive effects on flavonoid metabolism is still unclear. In this study, we analyzed the composition of flavonoids and the expression levels of flavonoid-related genes in leav...

The present study was carried out to investigate the antioxidant potential, total flavonoid and phenolic content in extracts of aerial parts of Cordia retua (Vahl.) Masam. The samples such as ethyl acetate and ethanol extracts were tested using six in vitro models such as 2,2-diphenyl-1-picrylhydrazyl, nitric oxide radical, iron chelating, hydroxyl radical, superoxide radical scavenging activit...

Antioxidant activity was evaluated in six Indian cultivars of lentil (Lens culanaris L.) viz. L-4076, L-4594, L-4147, DPL 15, DPL 62, and IPL 406. Three solvents, 70% ethanol, 100% methanol and 80% acetone, were used for preparation of seed extract. The seed extract was tested for total phenolic content, total flavonoid content and antioxidant activity by FRAP assay. The results showed that val...

In the present investigation, the antioxidant activity and free radical scavenging activity of Crambe cordifolia plant were spectrophotometrically studied. Free radical scavenging activity was determined by DPPH method and the obtained IC value was 1106.65 μg/mL. For comparison, the IC value of standard ascorbic acid 50 50 was 21.69 μg/mL. Antioxidant activity was determined by phosphomolybdate...

In contrast to the well-described various biological effects of grape wines, the potential effects of commonly consumed blackberry wine have not been studied. We examined in vitro antioxidant and vasodilatory effects of four blackberry wines and compared them with the effects of two red and two white grape wines. Although some blackberry wines had lower total phenolic content relative to the re...

Seasonal discrepancy in the antioxidant potential from bark of Nothapodytes nimmoniana was evaluated using two different methods (DPPH and FRAP) and were related to total phenolic content as well as flavonoid content. Higher yield of phenolic and flavonoid were observed during summer (May) similarly, the antioxidant activities (DPPH & FRAP) also were high. The antioxidant activities were strong...

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...