The crude oil of Malaysian castor bean ricinus communis L. seed was extracted by Soxhlet method using hexane. The physicochemical characteristics of castor bean oil were evaluated. The results showed that Malaysian castor seeds contain a relatively high percentage of total lipids content; 43.3% (per dry weight), high iodine value (84.5 mg/g) and saponification value (182.96 mg/g). The seed oil ...

        Ricin, the toxic lectin extracted from the castor bean plant (Ricinus communis), consists of an A chain (RTA) and a B chain (RTB). Anti-A chain Abs and anti-B chain Abs can neutralize toxins in vivo and in vitro via blocking the binding of the toxin to the cell. Also, RTB protein is able to serve as an antigen deliver to the mucosal immune system and act as an immunoad...

Accidental and intended Ricinus communis intoxications in humans and animals have been known for centuries but the causative agent remained elusive until 1888 when Stillmark attributed the toxicity to the lectin ricin. Ricinus communis is grown worldwide on an industrial scale for the production of castor oil. As by-product in castor oil production ricin is mass produced above 1 million tons pe...

in order to evaluate the density and dry weight of weeds and seed and oil yield of castor bean ricinus communis l.) as a medicinal plant affected by cover crops, an experiment was conducted at the agricultural research station, faculty of agriculture, ferdowsi university of mashhad, during growing season of 2008-2009. treatments were four cover crops included white clover, fenugreek, hairy vetc...

Glyoxysomes, a form of microbody, are present in castor bean endosperm during the first 8 days of seed germination. They have a "typical" microbody form and are shown histochemically to contain catalase. The catalase label is distributed throughout the microbody and is not an exclusive feature of the crystalline or amorphous core.Castor bean endosperm contain a second cytosome, only slightly la...

Biosynthesis of ent-kaurene was investigated in extracts of cell suspension cultures and seedlings of castor bean. Both cell-free extracts contain an inhibitor of kaurene synthetase. The inhibition affects mainly the cyclization of geranylgeranyl pyrophosphate to copalyl pyrophosphate (activity A) and has little or no effect on the further cyclization of copalyl pyrophosphate to ent-kaurene (ac...

Ricinus communis (castor bean) seeds are used to produce an alcohol-soluble oil that is used in more than 400 industrial processes. Despite its economic importance, there has been little research on the endophytic microbiota of castor bean seeds. This microbiota is important for plant metabolic processes and may have considerable biotechnological potential, such as production of lipases and pla...

Castor bean (Ricinus communis L.) is one of the most important non-edible oilseed crops. Characterization of seed development and lipid accumulation from female flowers pollinated to mature seeds has been carried out. The temporal expression patterns of 65 lipid genes involved in fatty acid and triacylglycerol biosynthesis using the semi-quantitative RT-PCR technique were also investigated. The...

BACKGROUND Ricinus communis (castor bean) is a species included into the Euphorbiaceae family, common to all the warm regions of the world. Although the allergenicity of its seed is well known, references are scarce regarding the role played by its pollen as a pneumo-allergen. OBJECTIVES To carry out an aerobiological study of this pollen in the Málaga area (southern Spain); describe the phys...

Purpose To evaluate the polymer doped rods behavior with bioactive glass and hydroxyapatite for possible application as a fracture fixing method. Methods Twenty eight Rattus norvegicus Wistar underwent bone defect for access to the femoral medullary canal and distributed into three experimental groups: group A - doped castor bean polymer with bioactive glass; group B - castor bean polymer and; ...