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Keywords = Bambusa textilis McClure

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15 pages, 317 KB  
Article
TLC Screening for Antioxidant Activity of Extracts from Fifteen Bamboo Species and Identification of Antioxidant Flavone Glycosides from Leaves of Bambusa. textilis McClure
by Jin Wang, Yong-De Yue, Feng Tang and Jia Sun
Molecules 2012, 17(10), 12297-12311; https://doi.org/10.3390/molecules171012297 - 19 Oct 2012
Cited by 79 | Viewed by 14925
Abstract
Interest in the antioxidant activity of bamboo leaves is growing. To discover new sources of natural antioxidants, a TLC bioautography method combined with a new image processing method was developed to evaluate the antioxidant activity of leaf extracts from 15 different species of [...] Read more.
Interest in the antioxidant activity of bamboo leaves is growing. To discover new sources of natural antioxidants, a TLC bioautography method combined with a new image processing method was developed to evaluate the antioxidant activity of leaf extracts from 15 different species of bamboo. The results showed that the methanolic extract of Bambusa. textilis McClure possessed the highest antioxidant activity among the selected bamboo species. To rapidly identify the antioxidant compounds, the crude extract of B. textilis McClure was analysed by HPLC-UV, and HPLC-micro-fractionation of the extract was carried out. Based on TLC bioautography-guided fractionation, three antioxidant fractions were isolated from B. textilis McClure by preparative chromatography. These three antioxidant compounds were identified as isoorientin 4''-O β-D-xylopyranoside (1), isoorientin 2''-O-α-L-rhamnoside (2) and isoorientin (3) according to their UV, MS, and NMR data. The proposed TLC screening method could therefore be an easy way to evaluate the antioxidant activity of bamboo leaves, and the results achieved should prove very helpful for promoting their utilization, as B. textilis McClure can be considered a promising plant source of natural antioxidants. Full article
(This article belongs to the Special Issue Antioxidants 2012)
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14 pages, 243 KB  
Article
Screening and Analysis of the Potential Bioactive Components in Rabbit Plasma after Oral Administration of Hot-Water Extracts from Leaves of Bambusa textilis McClure
by Jin Wang, Yong-De Yue, Feng Tang and Jia Sun
Molecules 2012, 17(8), 8872-8885; https://doi.org/10.3390/molecules17088872 - 26 Jul 2012
Cited by 26 | Viewed by 9344
Abstract
Bambusa textilis McClure is a traditional Chinese medicinal plant belonging to the Bambusoideae subfamily and used to treat chronic fever and infectious diseases. To investigate the bioactive compounds absorbed in the rabbit blood after oral administration of hot-water extracts from the [...] Read more.
Bambusa textilis McClure is a traditional Chinese medicinal plant belonging to the Bambusoideae subfamily and used to treat chronic fever and infectious diseases. To investigate the bioactive compounds absorbed in the rabbit blood after oral administration of hot-water extracts from the leaves of B. textilis McClure, a validated chromatographic fingerprint method was established using LC-Q-TOF-MS. Twenty compounds in bamboo leaves and three potential bioactive compounds in rabbit plasma were detected. Of the twenty detected compounds in vitro, fifteen of which were tentatively identified either by comparing the retention time and mass spectrometry data with that of reference compounds or by reviewing the literature. Three potential bioactive compounds, including (E)-p-coumaric acid, (Z)-p-coumaric acid, and apigenin-8-C-β-D-(2"-O-α-L-rhamnosyl)-gluco-pyranoside, were detected in both the leaves of B. textilis McClure and rabbit plasma. Of the three compounds, apigenin-8-C-β-D-(2"-O-α-L-rhamnosyl)glucopyranoside was identified based on its UV, MS, and NMR spectra. This study provides helpful chemical information for further pharmacology and active mechanism research on B. textilis McClure. Full article
(This article belongs to the Section Natural Products Chemistry)
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