Topic
Aldose
About: Aldose is a research topic. Over the lifetime, 1270 publications have been published within this topic receiving 27197 citations. The topic is also known as: aldoses.
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Journal Article•
1 citations
Patent•
03 Jul 2007
TL;DR: In this article, a method for isomerization of sugars by using the same enzyme is provided to prevent loss of isomerisation activity in the enzyme when metallic ion is released by EDTA(ethylenediamine tetraacetic acid) treatment, and induce nonspecific conversion of aldose-ketose.
Abstract: Metallic ion independent isomerase and a method for isomerization of sugars by using the same enzyme are provided to prevent loss of isomerization activity in the enzyme when metallic ion is released by EDTA(ethylenediamine tetraacetic acid) treatment, and induce non-specific conversion of aldose-ketose. The metallic ion independent isomerase has the amino acid sequences of SEQ ID NO:7 and SEQ ID NO:8 and is encoded by genes having the nucleotide sequences of SEQ ID NO:5 and SEQ ID NO:6. The metallic ion dependent isomerase is produced by transforming a host cell such as Escherichia coli with an expression vector containing the genes of metallic ion independent isomerase, and culturing the transformed host cell. The ketose selected from tagatose, ribulose, fructose, xylulose and psicose is produced from aldose by using the metallic ion independent isomerase. The aldose selected from D-glucose, D-galactose, D-xylose, D-mannose, D-allose, D-fucose, D-ribose, L-arabinose, D-arabinose and L-ribose is produced from ketose by using the metallic ion independent isomerase.
1 citations
Patent•
11 Jun 2015
TL;DR: In this article, a method for constructing a glycosidic bond in a saponin was proposed, which consisted in directly reacting an excessive amount of aldose or ketose with aglycone in a suitable organic solvent at 30 DEG C to a reflux temperature and with the presence of an acid catalyst.
Abstract: The present invention belongs to the field of organic synthesis, relates to a method for synthesizing a saponin, and in particular, to a method for constructing a glycosidic bond in a saponin, and comprises the following steps: directly reacting an excessive amount of aldose or ketose with aglycone in a suitable organic solvent at 30 DEG C to a reflux temperature and with the presence of an acid catalyst, to obtain a target product saponin.
1 citations
1 citations
Patent•
01 Jul 1941
TL;DR: In this article, a condensation product and a process of preparing the same was described. But the present paper relates to condensation products and not to the same process of preparation.
Abstract: The present invention relates to condensation products and to a process of preparing the same. Compounds being readily soluble with neutral reaction and being active against bacterial infections, especially against gonococci are obtained when reacting 4-(4'-aminobenzenesulphonamido) - benzenesulphonic...
1 citations