The experiments were purposed to investigate the effect of chitosan and yeast extract on Stemona alkaloid production in Stemona sp. culture. Both elicitors enhanced Stemona alkaloid production over the control. Treatment with chitosan at a concentration of 25 mg/L for 1 week resulted in the highest production of Stemona alkaloids. It was found that 1', 2'-didehydrostemofoline and stemofoline pr...

Background Cofactors may contribute to the elicitation and severity of anaphylaxis in about 30% of anaphylactic reactions. Clinical data from registries can support the identification and risk impact of such cofactors. Besides exercise or alcohol, drugs are known to facilitate anaphylactic reactions. The facilitating effect of cardiovascular drugs to hymenoptera stings is controversially discus...

Agarwood is a resinous wood of great economic value produced by trees from the Thymelaeaceae family in response to stress. The natural formation agarwood can take decades after exposure stressors. Artificial induction inoculating stem with fungi has been successfully demonstrated, but resin accumulation occurs very slowly. Cell suspension and callus cultures may serve as an alternative solution...

Plants are the unique sources of secondary metabolites (terpenes, phenolic and alkaloid) used as pharmaceuticals, food additives industrial produces. However, very limited information is known about their biosynthesis in plants. Elicitors chemicals often to activate accumulation such plant vitro cultures. Since ancient past, Narcissus well-known for its ornamental purposes medicinal versatility...