Background: Sucralose is an ideal food sweetener and sucrose-6-acetate (s-6-a) is a key intermediate for synthesis of sucralose. Synthesis of s-6-a was studied by free fructosyltransferase (FTase) from Aspergillus oryzae. Because of the limitations of free enzyme in stability and reusability, a FTase obtained from the new isolated Aspergillus sp. GX-0010 was immobilized and inv...

A chemoenzymatic approach was developed to prepare sucrose-containing aromatic polymers. The protease from Bacillus licheniformis catalyzed the transesterification of sucrose with a diester of terephthalic acid in pyridine to give the mono- and diester products. At 45 degrees C, >70% of sucrose was consumed after 1 day and sucrose diester began to form after 6 days when >95% of sucrose had been...

To isolate and characterize anti-tumor compounds through nuclear magnetic resonance (NMR) spectroscopy of ethyl acetate extract R. japonicus Houtt root their cytotoxic effects were evaluated in terms measuring inhibition growth three cancer cell lines: human hepatoma cells (HepG2), cerebral glioma (U251) ovarian carcinoma (SK-OV-3/DDP). The roots extracted with ethanol, partitioned petroleum et...

1. It has been demonstrated by ion exchange chromatography that the cell nucleus contains mononucleotides of adenine, guanine, cytosine, uracil, together with diphosphopyridine nucleotide, and several uridine diphosphate derivatives; the adenine nucleotides predominating in amount. Nucleotide components in the cell nucleus are in close agreement both quantitatively and qualitatively with those ...

Isolated envelope membranes of spinach chloroplasts (Spinacia oleracea L. var. Viroflay) exhibited selective permeability. Metabolites such as 3-phosphoglycerate, bicarbonate, glyoxylate, and acetate were transported rapidly; 6-phosphogluconate, glycolate, glycine, l-malate, and succinate were intermediate; whereas glucose 6-phosphate, fructose 1,6-diphosphate, and sucrose were hardly transport...

KRATZ, C. M., D. A. LEVITSKY AND S. LUSTICK. Differential effects of quinine and sucrose octa acetate on food intake in the rat. PHYSIOL. BEHAV. 20(5) 665-667, 1978. Twenty-seven adult female rats were fed chow diets containing quinine sulfate, sucrose octa acetate, or alphacel. Quinine produced a greater, more prolonged depression of food intake than did SOA. Quinine also resulted in loss of b...

Seventeen Thermomyces lanuginosus strains, cultivated on raffinose and sucrose, were ranked on the basis of -galactosidase activities. T. lanuginosus CBS 395.62/b strain showed the highest -galactosidase activity on both investigated carbohydrates. Several carbon sources were tested as potential inducers for the -galactosidase synthesis. On melibiose substrate -galactosidase activity was higher...