Changes of L-ascorbic Acid during Breadmaking Process
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L-Ascorbic Acid Peroxidase
Euglena gracilis was found to contain a peroxidase that specifically requires L-ascorbic acid as the natural electron donor in the cytosol. The presence of an oxidation-reduction system metabolizing L-ascorbic acid was demonstrated in Euglena cells. Oxidation of L-ascorbic acid by the peroxidase, and the absence of ascorbic acid oxidase activity, suggests that the system functions to remove H20...
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Leucocyte ascorbic acid was measured in 7 subjects during the common cold. There was a significant fall in L.A.A. to scorbutic levels within 24 hours of the onset of symptoms. By the fifth day the L.A.A. had returned to normal, which coincided with the cessation of symptoms. Absorption studies suggested 1g. ascorbic acid per day as a prophylactic dose and 6g. ascorbic acid per day as a therapeu...
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Cereal Chem. 69(3):266-270 Reduction of phytate was studied in model dough systems using whole(up to 550 C) phytic acid concentrations were less than 8 and 4% of original grain coarse meals or flours and during breadmaking of coarse meal concentrations for wheat and rye, respectively. Further increase of the breads from wheat and rye. It was found that pH was the most important temperature (abo...
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The medium used contained 3g of substrate, 150ml of 1/15M phosphate buffer and 150ml of sterile distilled water. 0.5g (dry weight) of the adapted cells was added to the medium and the whole was incubated at 30•‹ for 20 hours. For detecting the intermediate products, paper chromatography was chiefly used. For developing the nonvolatile acids, n-butanol-acetic acid-water (4:1:1) was used and the ...
متن کاملBiological synthesis of L-ascorbic acid in animal tissues: conversion of L-gulonolactone into L-ascorbic acid.
The enzyme system catalysing the conversion of D-glucuronolactone and L-gulonolactone into Lascorbic acid in animal tissues has been previously reported to be entirely located in the microsomal fractions ofratand goat-liver homogenates (Burns, Peyser & Moltz, 1956; Chatterjee, Ghosh, Ghosh & Guha, 1957a, b; 1958a, b). The kidney tissue has been found to be the site of this conversion in amphibi...
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ژورنال
عنوان ژورنال: NIPPON SHOKUHIN KOGYO GAKKAISHI
سال: 1968
ISSN: 0029-0394
DOI: 10.3136/nskkk1962.15.525