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Supercritical CO2 extract of Cinnamomum zeylanicum: chemical characterization and antityrosinase activity.
The volatile oil of the bark of Cinnamomum zeylanicum was extracted by means of supercritical CO2 fluid extraction in different conditions of pressure and temperature and E-Cinnamaldehyde and eugenol were found to be mainly responsible of this inhibition effect. Expand
Detection of Laccase, Peroxidase, and Polyphenol Oxidase on a Single Polyacrylamide Gel Electrophoresis
Abstract Laccase, polyphenol oxidase and peroxidase are widely distributed in both plants and micro-organisms. Among these enzymes, the identification of one particular activity in the presence ofExpand
Complete and efficient enzymic hydrolysis of pretreated wheat straw
Abstract A fractionation of wheat straw components in a two-step chemical pretreatment is proposed. Hemicelluloses were hydrolysed by dilute sulphuric acid, allowing a substantial recovery ofExpand
Olive milling wastewater as a medium for growth of fourPleurotus species
The fungi actively excreted large amounts of laccase in the medium, and at the same time the concentration of phenolics and other toxic compounds significantly decreased, as revealed by HPLC analysis and toxicity tests on standard cultures of human cell lines. Expand
Tyrosinase Inhibition: General and Applied Aspects
The active site of tyrosinase is described with a view to depicting its interactions with substrates and inhibitors, and technical and applicational implications are discussed. Expand
Laccase from Pleurotus sajor-caju on functionalised SBA-15 mesoporous silica: Immobilisation and use for the oxidation of phenolic compounds
Abstract Laccase from Pleurotus sajor-caju was immobilised on functionalised SBA-15 mesoporous silica. The immobilisation process reached the equilibrium after about 100 min. In order to study theExpand
Some aspects of tyrosine secondary metabolism.
Some physiopathological and pharmacological implications of the above-mentioned topics are considered, taking into account the well known toxicity of reactive intermediates in molecular oxygen reduction, as well as the reactivity of both semiquinonic and quinonic products of catecholamine oxidation. Expand
Effects of plant‐derived naphthoquinones on the growth of Pleurotus sajor‐caju and degradation of the compounds by fungal cultures
In agitated cultures, the presence of juglone was found to stimulate the production of veratryl alcohol oxidase in a significant manner, the first time degradation of plant derived naphthoquinones by a white‐rot fungus is reported. Expand
Quantitative evaluation of oxidative stress, chronic inflammatory indices and leptin in cancer patients: Correlation with stage and performance status
This is the first study that shows that several “biological” parameters of cancer patients such as antioxidant enzyme activity, cytokines, leptin and CRP strictly correlate with the most important clinical parameters of disease such as Stage and ECOG PS. Expand
Inorganic Materials as Supports for Covalent Enzyme Immobilization: Methods and Mechanisms
The most common inorganic supports for covalent immobilization of the enzymes are reviewed, with particular focus on their advantages and disadvantages in terms of enzyme loadings, operational stability, undesired adsorption, and costs. Expand