Application of the headspace solid-phase microextraction and gas chromatography-mass spectrometry (HS-SPME-GC/MS) technique as an analytical tool to monitoring the degradation of phenolic compounds and the formation of by-products in produced water by UV photolysis and UV/peroxide is proposed. All of the experimental conditions for the degradation tests were carried out according to the respons...

A simple medium was developed, using esculin as the substrate, for the isolation and identification of Cryptococcus neoformans. C. neoformans produced a brown-black pigment on the medium; all other yeasts produced no pigment or were light yellow. Esculin is beta-glucose-6,7-dihydroxycoumarin. C. neoformans produced pigment because the 6,7-dihydroxycoumarin component of the esculin molecule was ...

the pomegranate seeds of four iranian commercial varieties  (abanmahi (ab), malas (ms), pust sefid (ps) and shahvar (sh)) were evaluated in terms of some quality properties including protein, oil, dietary fiber, mineral contents and fatty acid composition. physicochemical properties and antioxidant activity of pomegranate seed oils (psos) were also determined. the oil antioxidant activity was m...

Thermal Protection Materials (TPM) such as carbon/phenolic composites are used to protect spacecraft structures from extreme conditions. This protection is, in part, achieved by the decomposition via pyrolysis of phenolic resin. Finite rate chemistry models however still unable predict chemical production rates and composition products accurately. is mostly due scarcity experimental data for mo...

BACKGROUND Tyrosinase is a bifunctional enzyme that catalyzes both the hydroxylation of monophenols to o-diphenols (monophenolase activity) and the subsequent oxidation of the diphenols to o-quinones (diphenolase activity). Due to the potential applications of tyrosinase in biotechnology, in particular in biocatalysis and for biosensors, it is desirable to develop a suitable low-cost process fo...

Phenolics, in addition to color, flavor, nutritional value, and organoleptic properties, are mainly responsible for the oxidative stability of olive oil change according degree maturity processes. In this study, it was aimed optimize malaxation process using response surface method terms yield bioactive constituents, including total phenolic content, ortho-diphenol, free radical scavenging acti...

The biochemical changes that occur during the growth and ripening of fruit vegetable tissues, especially for color firmness, are most important factors affecting quality fresh products. Cantaloupe (Cucumis melo, L.) is one main economically fruits in world its parameters, e.g., sweetness, nutritional factors, texture, influence consumer preferences. Hence, these two features, appearance texture...

Agri-food waste has proved to be a valuable bioresource that can used obtain variety of materials, ingredients and chemicals. The optimum conditions for extracting bioactive compounds from sweet cherry seeds (SCS) with different solvents temperatures were tested in this work. choice criteria based on the most efficient capacity while looking cleaner techniques lower health or environmental impa...