منابع مشابه
Biosynthesis of Alkali Insoluble Polysaccharide from UDP-d-Glucose with Particulate Enzyme Preparations from Phaseolus aureus.
A particulate enzyme system from Phaseolus aureus seedlings catalyzes the synthesis of alkali insoluble polysaccharide material from UDP-d-glucose. 80 to 90% of the d-glucose units are joined by beta-1,4 linkages, the remainder being combined by beta-1,3 linkages. It is not known whether the material is a single polysaccharide or a mixture.With a substrate concentration of 4 x 10(-3)m the enzym...
متن کاملThe site of cellulose synthesis. Hormone treatment alters the intracellular location of alkali-insoluble beta-1,4-glucan (cellulose) synthetase activities
Membrane preparations from growing regions of 8-day old Pisum sativum epicotyls contain multiple beta-1,4-glucan (cellulose) synthetase activities (UDP- or GDP-glucose: beta-1,4-glucan-glucosyl transferase), and the levels of some of these are influenced by treatments with the growth hormone, indoleacetic acid (IAA). When membranes from control epicotyl segments (zero time) are fractionated by ...
متن کاملPhenols – Sources and Toxicity
Phenols and their derivatives commonly exist in the environment. These compounds are used as the components of dyes, polymers, drugs and other organic substances. The presence of phenols in the ecosystems is also related with production and degradation of numerous pesticides and the generation of industrial and municipal sewages. Some phenols are also formed during natural processes. These comp...
متن کاملBiosorption Of Phenols A
Phenols are an important group of organic pollutants present in many industrial effluents such as petro-chemicals, textiles, tanneries; gasification units etc. The phenols should not exceed 0.01μg/l, 1mg/l in drinking & in industrial waters, respectively. But in most of the cities the situation is alarming where the phenol concentrations are more often crossed 8–10 ppm. For removal of the exces...
متن کاملDeoxyfluorination of phenols.
An operationally simple ipso fluorination of phenols with a new deoxyfluorination reagent is presented.
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 1919
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja01459a013