Euterpe oleracea (açaí) is a palm tree well known for the high antioxidant activity of its berries used as dietary supplements. Little is known about the biological activity and the composition of its vegetative organs. The objective of this study was to investigate the antioxidant activity of root and leaflet extracts of Euterpe oleracea (E. oleracea) and characterize their phytochemicals. E. ...

Isolated envelope membranes of spinach chloroplasts (Spinacia oleracea L. var. Viroflay) exhibited selective permeability. Metabolites such as 3-phosphoglycerate, bicarbonate, glyoxylate, and acetate were transported rapidly; 6-phosphogluconate, glycolate, glycine, l-malate, and succinate were intermediate; whereas glucose 6-phosphate, fructose 1,6-diphosphate, and sucrose were hardly transport...

1. ACEDO, J. R., and R. A. R O H D E . 1971. His tochemica l root pa thology of Brassica oleracea capi ta ta L. infected by Pra ty lenchus pene t rans (Cobb) Filipjev and S c h u u r m a n s Stekhoven (Nematoda : Tylenchida) . J. Nemato l . 3:62-68. 2. B H A T I A , I. S., J. S INGH, and K. L. BAJAJ. 1973. A new chromogen ic r eagen t for the detect ion of phenol ic c o m p o u n d s on th inla...

Cytochrome b(5) is a microsomal protein that functions as an intermediate electron donor in fatty acid desaturation and other oxidation/reduction reactions. cDNA clones were isolated from cauliflower (Brassica oleracea L.) by using oligonucleotides based on the partial amino acid sequence of the protein. The deduced amino acid sequence of the polypeptide exhibited approximately 30% sequence ide...

background: aging contains morphological and functional deterioration in biological systems. d-galactose (d-gal) generates free radicals and accelerates aging. portulaca oleracea (purslane) may have protective effect against oxidative stress. objective: purslane ethanolic extract effects were evaluated on antioxidant indices and sex hormone in d-gal aging female mice. materials and methods: 48 ...

The flavonoid apigenin was isolated from aerial part of P. oleracea L. The dried sample of plant was powdered and subjected to soxhlet extractor by adding 80 mL of ethanol : water (70 : 30). The extract was centrifuged at 11000 rpm for 30 min; supernatant was taken for further use. The fraction was concentrated and subjected to PTLC. The R f value of isolated apigenin was calculated (0.82). Pur...

In this work, the volatile composition of kale ( Brassica oleracea L. var. acephala) and its variation during germination were monitored during the first 9 days of seedling development by headspace solid-phase microextraction (HS-SPME) combined with gas chromatography/ion trap-mass spectrometry (GC/IT-MS). Differences were found among the materials in the distinct analyzed periods. A total of 6...

A new tricyclic alkaloid named portulacatone (1), i.e., 5,6-dihydro-8,9-dihydroxy-11H-pyrrolo[2,1b] [3]benzazepin-11-one, together with eight known compounds, methyl 4-hydroxyphenylacetate (2), phydroxybenzaldehyde (3), vanillin (4), protocatechualdehyde (5), p-hydroxybenzoic acid (6), iseluxine (7), oleracein E (8), and (þ)-(R)-feruloyl malate (9) were isolated from aerial parts of Portulaca o...

Pseudomonas sp. strain C9 is a plant growth-promoting bacterium isolated from the root tissue of Brassica oleracea L. grown in soil from Marlborough, New Zealand. Its draft genome of 6,350,161 bp contains genes associated with plant growth promotion and biological control.