Contribute to Study on Chemical Constituents of Urena Lobata (L.) of Vietnam

Abstract

Urena lobata L. is used in Vietnamese traditional medicine for the treatment of several diseases. Tree roots are used to treat rheumatism, dysentery, poor digestion, flu, tonsils, malaria, asthma, goiter. Flowers are used to treat chickenpox, fever, and mental disorders. Branches, leaves or whole trees used to treat injuries bruises, rheumatism, mastitis, bites. Phytochemical investigation of the n-hexan and ethyl acetate extract of Urena lobata L. led to the isolation of β-sitosterol (1), β-sitosterol-3-O-β-D-glucopyranoside (2), a-acetylamino-phenylpropyl a-benzoylamino-phenylpropanoate (3), quercetin (4), and trans-tiliroside (5). Their chemical structures were determined by spectroscopic methods including MS, 1D, 2D NMR and comparing with those reported in previous papers. Two compounds 3, 5 were isolated for the first time from Urena lobata plant.

A phyco-nanobionics biohybrid system for increased carotenoid accumulation in C. sorokiniana UUIND6

“…Additionally, a boost in Chl-a content may be due to acceptor side inhibition, whereas on a contrary hand, when AgNPs interact with ROS, they also exert both direct and indirect effects on algae under varied exposure conditions. 40,44 5 ppm zinc oxide NPs boost the chlorophyll concentration in Chlorella marina. 45…”

“…Additionally, a boost in Chl-a content may be due to acceptor side inhibition, whereas on a contrary hand, when AgNPs interact with ROS, they also exert both direct and indirect effects on algae under varied exposure conditions. 40,44 5 ppm zinc oxide NPs boost the chlorophyll concentration in Chlorella marina. 45 Some researchers, on the other hand, stated that a drop in Chl-a may be connected to changes in environmental factors, such as pollutants interfering with pigment production 46 and is associated to damage in chloroplast ribosomes.…”

Growth performance, carcass traits, meat quality and composition in pigs fed diets supplemented with medicinal plants (<i>Bindens pilosa</i> L., <i>Urena lobata</i> L. and Ramulus cinnamomi) powder

“…source of alkaloids and saponins (Pham et al, 2019) and Ramulus cinnamomi -source of transcinnamaldehyde and its derivatives (Sang-Oh et al, 2013), along with their antimicrobial, antifungal, antioxidant, cholesterol-lowering functions and quality improvement of animal products. Especially, a significant decrease in oxidation susceptibility of animal products owing to phenolic compounds in medicinal plants (Amaral et al, 2018) is likely to improve the sensory quality of meat including shelf life and flavour.…”

Detection of bovine leukemia virus in beef cattle kept in the Central Coast Regions of Vietnam

“…Especially, the importation of live cattle from the Southeast Asian countries such as Thailand and Myanmar have increased notably in recent years [ 32 ]. Australia, United States, and India are also the beef meat suppliers to Vietnam [ 24 , 32 ]. Local cattle, as well as livestock from Thailand and Australia, are predominantly used to satisfy local beef demands [ 32 ].…”