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Ultrasonic-assisted extraction and antioxidant capacities of flavonoids from Camellia fascicularis leaves
ABSTRACT Ultrasonic-assisted extraction of flavonoids from Camellia fascicularis leaves was optimized using response surface methodology. The optimal extracting conditions of flavonoids were…
A new arbutin derivative from the leaves of Vaccinium dunalianum wight
The structure of 1 was elucidated by extensive 1D and 2D NMR, HR-MS and CD spectroscopic analyses and, kaempferol 3-O-β-D-sambubioside (7) was isolated from the genus Vaccinium for the first time.
Diversity of endophytic fungi from the leaves of Vaccinium dunalianum
- Miaomiao Fan, Xiaoxue Chen, Ping Zhao
- Environmental ScienceLetters in applied microbiology
- 3 July 2020
A high diversity of endophytic fungi from V. dunalianum leaves was observed with high species richness S, but a low dominant index λ, which indicates that the strains P. capitalensis and G. mangiferae with potential antimicrobial activity were the dominant endophytes to the sampling of leaves.
Endophytic fungi from the branches of Camellia taliensis (W. W. Smith) Melchior, a widely distributed wild tea plant
- Xiaoxue Chen, Xulu Luo, Ping Zhao
- Medicine, BiologyWorld journal of microbiology & biotechnology
- 9 July 2019
The phylogenetic tree was established by maximum parsimony analysis, and the 11 orders observed for endophytic fungi belonging to Ascomycota and Basidiomycota were grouped into 4 classes.
6′-O-Caffeoylarbutin inhibits melanogenesis in zebrafish
The result suggested that 6′-O-caffeoylarbutin could be a candidate natural product to serve as a skin-whitening ingredient with the merits of potent melanin inhibition, less toxicity and reversible melanin synthesis after stopping use.
HPLC simultaneous determination of arbutin, chlorogenic acid and 6′-O-caffeoylarbutin in different parts of Vaccinium dunalianum Wight
A reliable, reproducible and accurate method for simultaneous and quantitative determination of 1–3 is developed by RP-HPLC analysis and this method should be appropriate for the quality assurance of unprocessed and processed materials of V. dunalianum.
A new catechin derivative from the fruits of Rosa sterilis S. D. Shi
- Xulu Luo, Han-Long Dan, Na Li, Yong‐He Li, Ying-Jun Zhang, Ping Zhao
- ChemistryNatural product research
- 13 March 2017
Abstract A new catechin derivative named as sterilin A (1), and three known compounds, (+)-catechin (2), kaji-ichigoside F1 (3) and 2α,3α,19α-trihydroxyurs-12-en-28-oic acid-28-O-β-D-xylopyranosyl-(1…
Optimization of Depolymerization Process of Polymeric Proanthocyanidins from the Barks of Pinus kesiya var. langbianensis
Objective(-)-epicatechin-(4β-8)-(-)-epigallocatechin 3-O-gallate (1) was found to be the main depolymerized product of polymeric proanthocyanidins (PPC) from the pine barks with tea polyphenols (TP),…