植物中 l-抗坏血酸代谢产生的酒石酸的立体异构体特征。

Stereoisomeric Characterization of Tartaric Acid Produced during l-Ascorbic Acid Metabolism in Plants.

机构信息

Divison of Cell and Molecular Biology, State University of New York at Buffalo, Buffalo, New York 14214.

出版信息

Plant Physiol. 1975 Jun;55(6):1071-3. doi: 10.1104/pp.55.6.1071.

DOI:10.1104/pp.55.6.1071

PMID:16659212

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC541768/

Abstract

Labeled tartaric acids from Pelargonium crispum apices which had been fed l-ascorbic acid-6-(14)C and Vitis labrusca and Parthenocissus inserta tissues which had been fed l-ascorbic acid-1-(14)C were examined by chemical means to determine chiral configuration. In each instance, label was associated with (+)-tartaric acid.Similar experiments with labeled tartaric acid from P. crispum which had been labeled with d-glucose-1-(14)C or -6-(14)C led to the same result. No evidence was obtained for formation of labeled meso-tartaric acid in experiments described above. The recent suggestion of H. Ruffner and D. Rast (Z. Pflanzenphysiol. 73: 45-55, 1974) that conversion of l-ascorbic acid to tartaric acid in plants is a nonenzymatic process is re-examined in the light of present findings.

摘要

用化学方法检测了喂食 l-抗坏血酸-6-（14）C 的天竺葵顶端和喂食 l-抗坏血酸-1-（14）C 的美洲葡萄和三叶爬山虎组织后产生的标记酒石酸的旋光异构体构型。在每种情况下，标记都与（+）-酒石酸有关。用 d-葡萄糖-1-（14）C 或 -6-（14）C 标记的天竺葵标记酒石酸的类似实验得出了相同的结果。在上述实验中，没有发现形成标记的内消旋酒石酸的证据。根据目前的发现，H. Ruffner 和 D. Rast（Z. Pflanzenphysiol. 73: 45-55, 1974）最近提出的植物中 l-抗坏血酸转化为酒石酸是非酶过程的观点再次受到审视。