Tulipa gesneriana has rich cultivars with abundant flower colors; among them, black tulips have become precious for their rareness in nature. It is of great significance to understand its color formation mechanism breeding new a blackish the future. In this present study, petals at five developmental stages ‘Queen Night’ (shorted ‘QN’), typical tulip cultivar, were collected identity flavonoid ...

Cai W., Gu X., Tang J. (2010): Extraction, purification, and characterisation of the flavonoids from Opuntia milpa alta skin. Czech J. Food Sci., 28: 108–116. The flavonoids contained in Opuntia milpa alta skin were extracted, purified, and identified. Based on single factor experimental results, the extraction parameters were optimised by using orthogonal design and variance analysis. The resu...

We analyzed the anti-inflammatory and antinociceptive activities of total flavonoids (TF) found in black mulberry fruits. The TF content was 20.9 mg/g (dry weight). Two anthocyanins, cyanidin-3-O-glucoside (8.3 mg/g) and cyanidin-3-O-rutinoside (2.9 mg/g), were identified in the fruits by UPLC. The TF of black mulberry fruits had significant reducing power and radical (OH(-), O2(·-), DPPH and A...

Natural plant extracts contain a variety of phenolic compounds which are assigned various biological activities. Our work aims to make a quantitative and qualitative characterization of the Zest (ZL) and the Flesh (FL) of lemon (Citrus limon), to valorize the pharmacological uses of lemon, by evaluating in vitro activities (DPPH, free radical scavenging and reducing power). The antibacterial, a...

Chemical analysis of the aqueous and n-butanol fractions methanolic extract Stipagrostis plumosa Munro ex T.Anderson, Poaceae, aerial parts led to isolation seven known phenolic glycosides 3,4′-dihydroxypropiophenone-3-O-β-d-glucoside, 5′-methoxy-3,4′-dihydroxypropiophenone-3-O-β-d-glucoside, 3′5′-dimethoxy-3,4′-dihydroxypropiophenone-3-O-β-d-glucoside, 3,4,5-trimethoxyphenyl-β-d-glucopyranose,...

Background: Musa acuminata (Musaceae) is a perennial tree-like plant that grown in many tropical and subtropical areas throughout the globe. Bananas, which may be consumed as fruit or vegetable, one of most significant crops nations owing to their nutrient-dense diet diverse therapeutic properties. Introduction: Apigenin glycosides, myricetin glycoside, myricetin-3-O-rutinoside, delphinidin, pe...

Jiaogulan tea has been commercialised globally. This study investigated the chemical components and health properties of a new jiaogulan genotype, tetraploid Gynostemma pentaphyllum. Two new saponins, (23S)-21β-O-methyl-3β,20ξ-dihydroxy-12-oxo-21,23-epoxydammar-24-ene-3-O-[α-L-rhamnopyranosyl(1→2)][β-D-glucopyranosyl(1→3)]-α-L-arabinopyranoside (4) and 23β-H-3β,20ξ-dihydroxy-19-oxo-21,23-epoxyd...

Sour cherry juices made from two sour cherry cultivars (Érdi bőtermő and Kántorjánosi 3) were investigated to determine their total anthocyanin content and half-life of anthocyanins during heat treatment at different temperatures (70, 80 and 90 °C) for 4 h. Before the heat treatment, Érdi bőtermő juice had higher anthocyanin concentration (812 mg/L) than Kántorjánosi 3 juice (513 mg/L). The gre...

Kaempferide-7-O-(4''-O-acetylrhamnosyl)-3-O-rutinoside (A-F-B) is a novel flavonoid which is extracted from the leaves of Actinidia kolomikta. The aim of this study was to investigate the hypolipidemic effects of A-F-B in hyperlipidemic rats induced by a high-fat diet. Male Wistar rats were randomly divided into six groups: normal diet group, high...