BACKGROUND The leaves of Strobilanthes crispus (S. crispus) which is native to the regions of Madagascar to the Malay Archipelago, are used in folk medicine for their antidiabetic, diuretic, anticancer and blood pressure lowering properties. Crude extracts of this plant have been found to be cytotoxic to human cancer cell lines and protective against chemically-induced hepatocarcinogenesis in r...

An ethyl acetate extract of the roots of Rumex dentatus L. was investigated. Three compounds were identified by their spectroscopic data as chrysophanol (1), 6-methyl-7-acetyl-1, 8-dihydroxy-3-methoxy naphthalene-1-O-β-D(L)-glucoside (2) and 6-methyl-7-acetyl-1, 8-dihydroxy naphthalene-1-O-β-D(L)-glucoside (3) were found in the plant for the first time. Compounds 2 and 3 are novel compounds. Th...

Hexose oxidase from Chondrus crispus catalyzes the oxidation of a variety of mono- and disaccharides including D-glucose, D-galactose, maltose, and lactose. The enzyme has previously been partially purified and was reported to be a highly glycosylated, copper-containing protein with a relative molecular mass of approximately 130,000 (Sullivan, J. D., and Ikawa, M. (1973) Biochim. Biophys. Acta ...

The rate of photosynthetic carbon uptake of Chondrus crispus Stack-house plants, at various CO(2) concentrations and pretreated with carbonic anhydrase (CA) inhibitors, was determined using an air-suspension, differential infra-red gas analyzer technique. It was found that the CA inhibitors, acetazolamide, dextran-bound acetazolamide (DBI, which does not permeate cell membranes), and subtilisin...

A model i s presented of the regulation of ethylene biosynthesis in relation to submergence and flooding resistance. It i s based on t ime-come measurements of ethylene production, ethylene accumulation, and concentrations of free and conjugated 1 -aminocyclopropane-1 -carboxylic acid (ACC) in submerged and drained flooding-resistant Rumex palusfris Sm. and flooding-sensitive Rumex acefosella 1...