(Horizontal and vertical tree community structure in a lowland Atlantic Rain Forest, Southeastern Brazil). The horizontal and vertical tree community structure in a lowland Atlantic Rain Forest was investigated through a phytosociological survey in two 0.99 ha plots in the Intervales State Park, São Paulo State. All trees ≥ 5 cm diameter at breast height were recorded. 3,078 individuals belongi...

Two new xanthones, characterized as 4-(1,1-dimethylprop-2-enyl)-1,3,5,8-tetrahydroxyxanthone (1) and penangianaxanthone (2), with three known xanthones, cudratricusxanthone H (3), macluraxanthone C (4) and gerontoxanthone C (5), as well as friedelin and stigmasterol were isolated from the leaves of Garcinia penangiana. Their structures were elucidated by analysis of spectroscopic data and compa...

Abstract Aim of this study is to present microbiological quality, and antimicrobial antioxidant activity the mangosteen fruit in two forms: freeze-dried powder fresh fruit. During identification microbiota using a MALDI-TOF MS Biotyper mass spectrophotometer, presence B. cereus Saccharomyces spp. has been detected. The best was achieved against Micrococcus Mangosteen ( Garcina mangostana ) char...

Garcinia xanthochymus has been widely used in traditional Chinese medicine for expelling worms and removing food toxins. Bioassay-guided fractionation of an EtOAc-soluble extract of G. xanthochymus stem bark led to the isolation of six new xanthones. Their structures were elucidated by spectroscopic methods, especially 2D-NMR techniques. Free-radical-scavenging activities of the isolated compou...

Four known compounds, 5-Hydroxyflavone (1), 2’-Hydroxyflavanone (2), Paeonol (3) and bergenin (4), were isolated from the methanolic extract of the stem bark of Garcinia malaccensis for the first time through combination of vacuum and radial chromatography techniques. The structures of the secondary metabolites (1-4) were elucidated on the basis of their spectroscopic evidence and comparison wi...

A new prenylated xanthone, 1,6-dihydroxy-3,7-dimethoxy-2-(3,7-dimethyloct-2,6-dienyl) xanthone (3-O-methylcowaxanthone) (1), together with four known xanthones, cowaxanthone (2), 7-O-methylgarcinone (3), α-mangostin (4) and γ-mangostin (5) were isolated from the latex of Garcinia cowa. The structure of compound 1 was elucidated on the basis of spectroscopic data interpretation, including 1D and...