Isolation of Myristicin from <i>Ligusticum scoticum</i>. L
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Isolation and characterization of acetylcholinesterase inhibitors from Piper longum L.
Background and objectives: The cholinergic deficit correlates with the severity of Alzheimer’s disease. The cholinergic function can be improved by AChE inhibitors blocking this key enzyme in the breakdown of acetylcholine. Based on traditional medicine, during two last decades the use of herbal medicinal substances in dementia therapy has been studied. The fruit extract of <em...
متن کاملThe isolation of L-arabitol from pentosuric urine.
The nature of the metabolic defect in congenital pentosuria has not been determined, although considerable evidence is accumulating in regard to the metabolism of L-xylulose. This pentose, long known to be excreted in gm. quantities by pentosuric individuals, has been found in small amounts in the urine of “non-pentosuric” humans (2-4), guinea pigs (3), and rats (4). Touster, Mayberry, and McCo...
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BACKGROUND Pteris vittata L. is rich in flavonoids which exhibit different bioactivities. In order to investigate the flavonoids components of P. vittata L., extracts of the plant were isolated by column chromatography on silica gel and Sephadex LH-20. RESULTS Four flavonoids compounds were obtained, the structures were identified as kaempferol (1), quercetin (2), kaempferol-3-O-d-glucopyrano...
متن کاملIsolation of uridine 5'-diphosphate L-rhamnose from Salmonella typhimurium.
A nucleotide isolated from a rough mutant of Salmonella typhimurium LT2 has been identified as uridine 5'-diphosphate L-rhamnose on the basis of chemical, enzymatic, and chromatographic analysis. Other nucleotide-linked sugars were isolated from this organism and tentatively identified as cytidine diphosphate abequose, cytidine diphosphate glucose, uridine diphosphate glucose, uridine diphospha...
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A (GA) n and (GT) n microsatellite-enriched library was constructed and 23 nuclear simple sequence repeat (SSR) loci were characterized in the guava species ( Psidium guajava L.). All SSR loci were found to be polymorphic after screening for diversity in different cultivars, and across-taxa amplification tests showed the potential transferability of most SSR markers in three other Psidium speci...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1959
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.79.1_106