Topic
Isovitexin
About: Isovitexin is a research topic. Over the lifetime, 526 publications have been published within this topic receiving 11525 citations. The topic is also known as: 6-Glucosylapigenin & Isovitexin.
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TL;DR: In this article , the antinociceptive properties of Echinodorus macrophyllus extract and its fractions were assessed by acetic acid-induced writhing, formalin test, tail immersion test, hot-plate test, xylene-induced ear edema methods, and the evaluation of its mechanism was performed in the writhing model.
2 citations
TL;DR: In this article , seven batches of aqueous extracts from Miconia chamissois Naudin were produced for standardization and evaluated for total solids, polyphenol (TPC) and flavonoid content (TFC), vitexin derivative content, antioxidant activity; thin-layer chromatography (TLC), and high-performance liquid chromatography profiles were generated.
Abstract: Miconia chamissois Naudin is a species from the Cerrado, which is being increasingly researched for its therapeutic potential. The aim of this study was to obtain a standardized extract and to evaluate seasonal chemical variations. Seven batches of aqueous extracts from leaves were produced for the standardization. These extracts were evaluated for total solids, polyphenol (TPC) and flavonoid content (TFC), vitexin derivative content, antioxidant activity; thin-layer chromatography (TLC), and high-performance liquid chromatography (HPLC) profiles were generated. For the seasonal study, leaves were collected from five different periods (May 2017 to August 2018). The results were correlated with meteorological data (global radiation, temperature, and rainfall index). Using chromatographic and spectroscopic techniques, apigenin C-glycosides (vitexin/isovitexin) and derivatives, luteolin C-glycosides (orientin/isoorientin) and derivatives, a quercetin glycoside, miconioside B, matteucinol-7-O-β-apiofuranosyl (1 → 6) -β-glucopyranoside, and farrerol were identified. Quality parameters, including chemical marker quantification by HPLC, and biological activity, are described. In the extract standardization process, all the evaluated parameters showed low variability. The seasonality study revealed no significant correlations (p < 0.05) between TPC or TFC content and meteorological data. These results showed that it is possible to obtain extracts from M. chamissois at any time of the year without significant differences in composition.
2 citations
TL;DR: Those of the leaves of Amorphophallus titanum, which has the largest inflorescence among all Araceous species, were reported for the first time.
2 citations
Journal Article•
TL;DR: In this paper, the UPLC method was established for simultaneous determination of vitexin and isovitexins in mung bean and the separation was achieved on a C18 column with a mobile phase consisting of methanol-0.5% acetic acid (20:80).
Abstract: The UPLC method was established for simultaneous determination of vitexin and isovitexin in mung bean.The separation was achieved on a C18 column(2.1 mm×50 mm,1.7 μm) with a mobile phase consisting of methanol-0.5% acetic acid(20:80).The flow rate was 1 mL/min.The column temperature was maintained at 30 ℃.The detection wavelength was at 338 nm.The precision,stability and repeatability of the method were good.The linear range of vitexin and isovitexin was 0.685~6.85 μg/mL and 0.645~6.45 μg/mL,respectively.The average content of three batch samples was 0.0467% for vitexin and 0.0555% for isovitexin.The method was accurate and repeatable,which was better for quality evaluation of vitexin and isovitexin in mung bean.
1 citations
TL;DR: In this article, seven flavonoids were identified from leaves of Polygonum offine D. Don by means of polyamide column, ion exchange and thick layer chromatography.
1 citations