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Vega-Jarquin, C. et al.

Biotransformation of n-hexadecane by cell suspension cultures of Cinchona robusta and Dioscorea composita.

This manuscript evaluates the phytotoxicity and biotransformation of n-hexadecane as well as peroxidase activity and cytochrome P450 concentration in microsomes for cell suspension cultures of Cinchona robusta and Dioscorea composita. Phytotoxicity was evaluated based on viability and growth. Cell cultures were exposed to a 2 and 4% (v/v) dose of n-hexadecane. The biotransformation of n-hexadecane was determined based on labeled recovery in polar, nonpolar, and cell residue fractions after cell culture extraction during exponential cell growth phase and stationary phase. Differences were observed in accumulation of label during cell growth phase and stationary phase for the cells of the two plants. Differences also were observed between phases for label in polar and nonpolar fractions. Thin-layer chromatography determined labeled intermediates and some were identified. The activity of peroxidase and concentration of cytochrome P450 was lower in C. robusta than in controls and greater in D. composita than in controls. In vitro biotransformation was not successful.[1]

References

Biotransformation of n-hexadecane by cell suspension cultures of Cinchona robusta and Dioscorea composita. Vega-Jarquin, C., Dendooven, L., Magaña-Plaza, I., Thalasso, F., Ramos-Valdivia, A. Environ. Toxicol. Chem. (2001) [Pubmed]

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