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PubMed1995

Characterization of an acidic polysaccharide isolated from the leaves of Corchorus olitorius (Moroheiya).

An acidic polysaccharide was isolated from the water-soluble mucilage extracted from dried leaves of Corchorus olitorius, known as Moroheiya in Japan (3.0 g per 100 g). This polysaccharide showed a single peak in a Sepharose CL-6B column, and the specific rotation in H2O at 25 degrees C was +250 degrees. The polysaccharide was rich in uronic acid (65%), and consisted of rhamnose, glucose, galacturonic acid, and glucuronic acid in a molar ratio of 1.0:0.2:0.2:0.9:1.7, in addition to 3.7% of the acetyl group. A methylation analysis, Smith degradation study and fragmentation analysis suggested that this polysaccharide mainly consisted of O-4 substituted galacturonic acid and glucuronic acid, and O-2 substituted rhamnose residues, and that most of the (1-->4)-linked uronic acid residues were substituted at the O-3 position with glucuronic acid residues. This polysaccharide showed proliferative activity toward the murine splenocyte.

Animals↗
PubMed1986

Influence of jute (Corchorus olitorius) seed protein enriched diet on some enzymes and liver lipids of albino rats (Rattus norvegicus).

The effect of protein, isolated from Jute (Corchorus olitorius) seed was studied upon albino rats with respect to some of their serum, liver and intestinal enzymes and liver lipids. An increase in the body weight (including the weight of the liver) was noted in test animals after feeding with a Jute seed protein enriched diet. It was also observed that AST, ALT and total lipid of liver increased significantly whereas AST and ALT of serum were decreased. An increase in the concentration of lipids in the liver was found and this may be due to excess of the seed protein in the diet. An overall observation reveals that there is slight fatty infiltration in the liver of test animals.

4-Nitrophenylphosphatase↗
PubMed2005

Molokhia (Corchorus olitorius L.) extract suppresses transformation of the aryl hydrocarbon receptor induced by dioxins.

Dioxins enter the body mainly through diet and cause the various toxicological effects by binding to the cytosolic aryl hydrocarbon receptor (AhR) followed by its transformation. In recent reports, it has been shown that certain natural compounds suppress AhR transformation in vitro. In this study, we demonstrated that ethanolic extract from molokhia, known as Egyptian spinach, showed the strongest suppressive effect on AhR transformation induced by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) in cell-free system using rat hepatic cytosol among 41 kinds of extracts from vegetables and fruits. The molokhia extract also suppressed TCDD-induced AhR transformation in mouse hepatoma Hepa-1c1c7 cells and in intestinal permeability system constructed with human colon adenocarcinoma Caco-2 cells and human hepatoma HepG2 cells. Moreover, oral administration of the molokhia extract (100mg/kg body weight) decreased 3-methylcholanthrene-induced AhR transformation to the control level by inhibiting translocation of the AhR from cytosol into the nucleus in the liver of rats. The molokhia extract-administered rat liver showed a tolerance to TCDD-induced AhR transformation by ex vivo experiment. These results indicate that molokhia is an attractive food for isolation and identification of a natural antagonist for the AhR.

Animals↗
PubMed2005

Jew's mellow leaves (Corchorus olitorius) suppress elevation of postprandial blood glucose levels in rats and humans.

The study was performed to explore the suppressive effect of Jew's mellow leaves (JML) on postprandial blood glucose levels in rats and humans. A soluble dietary fiber (SDF) was extracted from the freeze-dried JML powder. An elevation of the postprandial blood glucose level in rats given 1% or 2% JML-SDF solution orally together with 20% glucose solution was significantly suppressed as compared with that observed in the control rats given only glucose solution. When seven healthy young male adults ingested 225 mL of JML mixed juice containing 15 g of freeze-dried powder with 75 g of glucose in the fasting state in the morning, the elevation of the postprandial blood glucose level was significantly suppressed as compared with the control subjects. The diffusion rate of glucose and the permeation rate of glucose in the cultured Caco-2 cells were both significantly reduced by the addition of appropriate amounts of JML-SDF when compared to the controls. These results indicate that the effective substance in JML for suppressing blood glucose elevation is a kind of mucilaginous SDF. The mechanism by which this suppression occurs may be largely attributable to the delayed absorption of glucose from the intestinal membrane in the upper digestive tract by viscous SDF.

Adult↗
PubMed2003

Anti-steroidogenic activity of methanolic extract of Cuscuta reflexa roxb. stem and Corchorus olitorius Linn. seed in mouse ovary.

Methanolic extract (ME) of both C. reflexa stem and C. olitorius seed arrested the normal oestrus cycle of adult female mouse and significantly decreased the weight of ovaries and uterus. The cholesterol and ascorbic acid contents in ovaries were significantly increased in the treated mice. Two key enzymes, delta5-3beta-hydroxysteroid dehydrogenase and glucose-6-phosphate dehydrogenase, were decreased significantly in ME of both C. reflexa stem and C. olitorius seed after 17 days of treatment. High level of substrates and low level of enzymes indicate the inhibition of steroidogenesis in treated mice and may be due to the presence of flavonoids.

Animals↗