Enzymic and Non-Enzymic Oxidation in the Brewhouse: A Theoretical Consideration
نویسندگان
چکیده
منابع مشابه
Enzymic oxidation of formic acid.
Interest in the metabolic fate of formic acid has been renewed as the result of recent experiments showing active incorporation of carbon-labeled formate into normal body constituents of the pigeon (l-3) and the rat (4, 5). Prior to these findings, enzymes capable of catalyzing the oxidation of formic acid had been reported, widely distributed in plant and animal tissues (6). Only in the case o...
متن کاملNon-enzymic protein phosphorylation
Incubation of 6-phosphogluconate dehydrogenase from Candida utilis with either acetyl phosphate, 1,3-diphosphoglycerate or carbamoyl phosphate results in the phosphorylation of the protein. The binding of one phosphate residue per enzyme subunit does not affect significantly the kinetic properties, but makes the enzyme less reactive toward thiol reagents, trypsin and pyridoxal 5'-phosphate. We ...
متن کاملXci . the Reversible Enzymic Oxidation of Vitamin C
SOME years ago during the progress of an inquiry on the production of an antiscorbutically active cider from Bramley's Seedling apples it was observed that the juice expressed from the fruit while retaining a very high proportion of its antiscorbutic activity did not reduce indophenol. At that time the writer held the view that the capacity for reducing this indicator was mainly due to a substa...
متن کاملEnzymic Catalysis
The time of greatest sensitivity to radiation is during the period of organogenesis in the first twelve weeks of human foetal development. Irradiation of the adult can cause life shortening or increased incidence of leukemia. The last chapter is concerned with the basis and origin of radiation protection standards, the hazards of nuclear power plants, high altitude supersonic aerospace travel, ...
متن کاملChemical and enzymic oxidation by tyrosinase of 3,4-dihydroxymandelate.
Tyrosinase usually catalyses the conversion of monophenols into o-diphenols and the oxidation of diphenols to the corresponding o-quinones. Sugumaran [(1986) Biochemistry 25, 4489-4492] has previously proposed an unusual oxidative decarboxylation of 3,4-dihydroxymandelate catalysed by tyrosinase. Our determination of the intermediates involved in the reaction demonstrated that 3,4-dihydroxybenz...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Institute of Brewing
سال: 1999
ISSN: 0046-9750
DOI: 10.1002/j.2050-0416.1999.tb00025.x