Higher plant tissues contain two alpha-glucan phosphorylase isozymes (EC 2.4.1.1), types L and H, localized in the plastid and the cytoplasm, respectively. We already isolated and sequenced a cDNA clone encoding the type L isozyme. Presently, a cDNA clone encoding the type H counterpart was isolated
Vitamin B6 is well recognized as an essential antioxidant and plays a role in stress responses. Co-expression of plant and pathogen-derived vitamin B6 genes is critical during disease development of R. solani. However, little is known about the functionality of vitamin B6 vitamers during
The intra- and extracellular contents of vitamins were studied in the course of submerged cultivation of the higher basidial mushroom Pleurotus ostreatus (Jacq.: Fr.) Kummer st. IMBF-1300 on liquid nutrient media. This strain was found to be autotrophic in respect of thiamin (vitamin B1), riboflavin
An automated chromatographic detection system for the simultaneous determination of riboflavin phosphate, caffeine, nicotinamide and pyridoxine hydrochloride in a multivitamin pharmaceutical preparation was constructed. Hydrolytic pretreatment of riboflavin phosphate to riboflavin was carried out
The effects of food composition and thermal processing on the relative bioavailability of vitamin B-6 in beef, spinach, potato, and cornmeal were assessed by a series of rat bioassays. The protein content of the basal diets was varied from 5 to 50%. Within each protein subgroup, graded levels of
Research was conducted to evaluate the merits of rat bioassays in studies concerning the bioavailability of vitamin B-6. A protocol was devised, which included pair-feeding and prevention of coprophagy. Plasma pyridoxal 5'-phosphate (PLP) was measured by a rapid chromatographic method as an
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