background: medicinal plants (especially belong to lamiaceae family) are potential sources of new drugs to improve the treatment of diseases whose treatment is associated to anti-oxidative agents. in this paper, the ferric reducing ability of plasma (frap) activity of some lamiaceae and apiaceae species, has been evaluated. methods: aerial parts of the plants were dried, cut into small pieces a...

The aim of this work was to study the pyocyanin pigment from Pseudomonas aeruginosa DN9. involves optimization process parameters for enhanced production under submerged fermentation condition. During process, maximum (92.12 µg/ml) obtained with carbon source mannitole, nitrogen peptone, inorganic salt NaCl and metal ion FeSO4. Plackett Burman design Response Surface Methodology (RSM) showed KH...

a soil bacterium capable of degrading chitin on chitin agar plates was isolated and identified as bacillus pumilus isolate u5 on the basis of 16s rdna sequence analysis. in order to optimize culture conditions for chitinase production by this bacterium, a two step approach was employed. first, the effects of several medium components were studied using the plackett-burman design. among various ...

Iron deficiency, which severely decreases the plant yield and quality, is one of major problems calcareous soils. Foliar applications humic substances and/or Fe fertilizers are environmentally friendly methods to cope with deficiency. The aim this study was investigate combined effect Fe/nano humic/fulvic acid-based biostimulant foliar on content growth parameters spinach. Treatment solutions w...

Rice ranks second among cereals in dietary uses around the world. is deficient iron (Fe), and these are important micronutrients for infants, men, women. Fortification of rice with would help to minimize nutrient deficiency disorders humans. The current study aims introduce nutrient-rich rice. effects on germination, growth, photosynthetic pigment, antioxidant activity, reduction oxidative stre...

The aim of this study was to investigate whether the preincubation of brain homogenates with L-phenylalanine (Phe), L-cysteine (Cys) or reduced glutathione (GSH) could reverse the free radical effects on Na+,K+-ATPase activity. Two well established systems were used for the production of free radicals: 1) FeSO4 (84 microM) plus ascorbic acid (400 microM) and 2) FeSO4, ascorbic acid and H2O2 (1 ...

effect on T lymphocytes. Fermentations for the production of conagenin were done as follows. S. roseosporus was cultured in 500-ml Erlenmeyer flasks containing 1 10 ml of the autoclaved seed medium consisting of galactose 2.0%, dextrin 2.0%, soy peptone 1.0%, corn steep liquor 0.5%, (NH4)2SO4 0.2%, CaCO3 0.2% and one drop of silicone. The seed medium was adjusted to pH 7.4 with 1 n HC1 and was ...

Two cDNA clones exclusively induced under an extremely high-CO2 concentration (20%) were isolated from Chlorococcum littorale by differential screening and named HCR (high-CO2 response) 1 and 2, respectively. The amino acid sequence of the protein encoded by HCR2 exhibited homology to the gp91-phox protein, a critical component of a human phagocyte oxidoreductase, and to the yeast ferric reduct...