Phytochemical investigation of the aqueous extract of Pithecellobium clypearia afforded one novel compound, clypearoside A (1), and one new stereoisomer, (-)-(2S,3S)-epigallocatechin-7-gallate (2) and four known ones (3-6). Their structures were elucidated on the basis of spectroscopic data, especially 2D NMR, HRESIMS and ECD spectra. Compounds 2-4 showed strong activity against DPPH (diphenylp...

Plants can contain a wide variety of substances with antioxidative properties which are associated with important health benefits. These positive health effects are of great importance at a time when the environment is laden with many toxic substances. Five selected herbal plants namely, Mimosa pudica, Phyllanthus niruri, Ceiba pentandra, Eleusine polydactyla and Trema amboinensi, were chosen f...

The effect of the addition of Allium hookeri on the quality of fermented sausage made with meat from sulfur fed pigs was examined, throughout a 60 d ripening period. There were two treatments in animal management: normal feed fed pigs, and sulfur fed pigs given 0.3% sulfur mixed normal feed. Fermented sausage manufactured with meat from normal feed fed pigs, and with meat from sulfur fed pigs, ...

Figure 1 FRAP and ABTS values in plasma of ICU polytrauma patients (n = 73) are significantly different from those of an ageand gender-matched population (CONTROL) (n = 102). Asterisk indicates statistical differences according to Mann-Whitney test (P <0.05). FRAP and ABTS in plasma were measured as described [4] by using, respectively, 2,4,6-tri(2-piridil)-s-triazine, FeCl3, and acetate buffer...

Accepted: 08/06/2014 Abstract Six variety of betel leaf from different domain of India were extracted using five solvents in order to determine the effect of solvent and changing variety on total phenol content and antioxidant activity. Antioxidant activity was determined using DPPH, ABTS, FRAP, PCL (Photochemluminiscence) assay. However 80% methanol for TPC, 80% ethanol followed by 80% methano...

Phytochemical investigation of the natural products from Xanthium strumarium led to the isolation of fourteen compounds including seven caffeoylquinic acid (CQA) derivatives. The individual compounds were screened for inhibition of α-glucosidase, protein tyrosine phosphatase 1β (PTP1β), advanced glycation end products (AGEs), and ABTS⁺ radical scavenging activity using in vitro assays. Among th...

This study investigated the antioxidant activity of functional beverage concentrates containing herbal medicine extracts (FBCH) using various antioxidant assays, such as 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical scavenging activity, and reducing power assay. The total polyphenolic content of FBCH (81.45...

Flavonoids and phenolics are abundant in loquat flowers. Methanol had the highest extraction efficiency among five solvents, followed by ethanol. Considering the safety and residue, ethanol is better as extraction solvent. The average content of flavonoids and phenolics of loquat flower of five cultivars were 1.59 ± 0.24 and 7.86 ± 0.87 mg/g DW, respectively, when using ethanol as extraction so...

Development of flow injection analysis (FIA) is reported for determination of total antioxidant capacity of alcoholic beverages (wines and spirits) by bienzymatically produced ABTS + and electrochemical detector using interdigitated gold electrode (IDE). The method is based on biamperometric measurements using ABTS jABTS redox couple. During the analysis, ABTS radical cation was bienzymatically...

The objective of this present study was to isolate a potential laccase producing fungi from the different environmental samples from Gujarat. Eighteen morphologically different fungi were isolated on mineral salts medium having lignin (sole carbon source) and screened qualitatively for their ability to produce laccase by plate screening method using the indicators ABTS, Brilliant Blue R (RBBR),...