N. T. Omiadze

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Stabilities of phenol oxidase and peroxidase from tea plant (Camellia sinensis L.) clone Kolkhida leaves, apple (Mallus domestica L.) cultivar Kekhura fruits, walnut (Juglans regia L.) green pericarp, and horseradish (Armoracia lapathifolia Gilib) roots were studied using different storage temperature modes and storage duration. It was demonstrated that(More)
We determined the molecular weight and some properties of multiple forms of phenol oxidase from tea leaves and four other perennial plants. It was shown that multiple high- and low-molecular forms of phenol oxidase differed in substrate specificity. Low-molecular forms of the enzyme mostly demonstrated hydroxylase activity, while high-molecular forms showed(More)
Controlled drug delivery occurs when a polymer, whether natural or synthetic, is judiciously combined with a drug or other active agent in such a way that the active agent is released from the material in a predesigned manner. The release of the active agent may be constant over a long period, it may be cyclic over a long period, or it may be triggered by(More)
The intracellular localization and some properties of monophenol monooxygenase (MPMO) from fresh tea leaves have been studied. It has been demonstrated that MPMO activity is located in cytosole and chloroplasts. These two forms have different properties. Molecular weights of cytosole and chloroplasts MPMO are 41 and 28 kD respectively. The chloroplasts and(More)
Phenol oxidase (EC 1.14.18.1) from the microscopic fungus Mycelia sterilia IBR 35219/2 was immobilized using glutaraldehyde on macroporous silica carriers. The enzyme immobilized on amino-Silochrome SKh-2 or aminopropyl-Silochrome 350/80 exhibited maximum activity. Soluble and immobilized phenol oxidases were compared. Compared to the soluble enzyme, the(More)
The possibility to regulate phenoloxidase activity with sulfur dioxide was studied. It was found that this compound is a potent inhibitor of phenoloxidase of the reversible and mixed type. The inhibitory effect of sulfur dioxide on phenoloxidase provided grounds for a new biotechnological approach to the production of instant green tea. This approach allows(More)
Phenol oxidase (EC 1.14.18.1) from the microscopic fungusMycelia sterilia IBR 35219/2 was immobilized using glutaraldehyde on macroporous silica carriers. The enzyme immobilized on amino-Silochrome SKh-2 or aminopropyl-Silochrome 350/80 exhibited maximum activity. Soluble and immobilized phenol oxidases were compared. Compared to the soluble enzyme, the(More)
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