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Effect of ascorbic acid on respiration and carbohydrate metabolism of mycelial felts ofCunninghamella sp.

Действие аскорбиновой кислоты на дыхание и метаболизм углеводов мицелия Cunningghamella sp.

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Abstract

Ascorbic acid induced rapid sucrose absorption accompanied by increased keto acid content and respiration rate. Lower concentrations of the vitamin activated glucosan and galactosan accumulation while an increase of concentration of the drug above 20 p.p.m. attenuated the former and furthered the latter with a simultaneous increase in the disaccharide content. In all cases, the acid had no effect on either the free or conjugated monosaccharides, recorded in this investigation, but increased the nucleoprotein content to a constant value regardless of the variation of concentration of the vitamin.

The gain in dry weight of ascorbic acid-treated mats did not account for the high sugar uptake, suggesting an alteration in the pathways of carbohydrate metabolism.

Abstract

Аскорбиновая кислота вызывала быструю абсорбцию сахарозы, сопровождавщуюся повышением содержания кето-кислот и увеличением частоты дыхания. Небольшие концентрации витамина активировали аккумуляцию глюкозана и галактозана, тогда как повышенная концентрация сахарозы (выме 20 п. п. м.) понижала аккумуляцию глюкозана и повышала аккумуляцию галактозана при одновременном увеличении содержания дисахарида. Ни в одном случае кислота не оказывала влияния ни на свободные, ни на конъюгированные моносахариды, о которых говорится в зтой работе, однако она повышала содержание нуклеопротеина до постоянных величин, независимо от изменений концентрации витамина. Выход сухого веса веществ, на которые действовала аскорбиновая кислота, не был виновником высокого потребления сахара, которое предполагает изменения метаболических путей карбогидратов.

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  1. Botany Department, Faculty of Science, Cairo University, Egypt

    M. I. Naguib

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  1. M. I. Naguib
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Naguib, M.I. Effect of ascorbic acid on respiration and carbohydrate metabolism of mycelial felts ofCunninghamella sp.. Folia Microbiol 10, 215–223 (1965). https://doi.org/10.1007/BF02875950

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