Distribution of Ascorbate Oxidase in Citrus Fruits.

Ascorbate oxidase.

A new procedure has been described for the isolation and purification of ascorbate oxidase from green zucchini squash (Cucurbita pepo meduttosa). The new purification method achieves a more than ZOO-fold purification with about a 14% recovery of the total activity present in the crude juice. The purified enzyme preparations have been found to be homogeneous by the criteria of ultracentrifugal a...

Levels of phosphorus in citrus fruits

___________________________________________________________________________________________ Abstract Phosphates are inorganic compounds, based on the element phosphorus, combined with oxygen to form phosphates, the form in which phosphorus is present in nature. Phosphates are essential for plant growth, crops, and human health. Phosphates have been used in processing and preservation of fruits ...

The Physiology of Citrus Fruits in Storage

Refrigerated and frozen storage Concentrating Dehydrating Pickling and fermenting Sugar preservation Miscellaneous Recovery of constituents Disposal of residues and effluents Analytical and composition Nutrition Still another basis for classification might be according to the type of food as: Fruits Vegetables Grains Nuts Spices Meat Fish Dairy products Poultry products Condiments Confections B...

The function of ascorbate oxidase in tobacco.

The function of the apoplastic enzyme ascorbate oxidase (AO) was investigated in tobacco (Nicotiana tabacum). The abundance of AO mRNA was up-regulated by light. Cytosolic ascorbate peroxidase (APX1) transcripts were also highest in the light. In contrast, L-galactono-gamma-lactone dehydrogenase, stromal APX, and thylakoid APX transcripts remained constant over the day/night cycle. Salicylic ac...

Determination of vitamin C in iranian citrus fruits