Stoffwechselvorgänge vonNocardiasp. - Biotransformation von Triterpenen

Industrial Biotransformation*

Biocatalysis or biotransformation encompasses the use of biological systems to catalyze the conversion of one compound to another. The catalyst part of the biological system can thereby consist of whole cells, cellular extracts, or isolated enzyme(s). Up to the second decade of the twentieth century, processes based on biotransformations were classified under various denominations such as ‘‘zym...

Anaerobic biotransformation of estrogens.

Estrogens are important environmental contaminants that disrupt endocrine systems and feminize male fish. We investigated the potential for anaerobic biodegradation of the estrogens 17-alpha-ethynylestradiol (EE2) and 17-beta-estradiol (E2) in order to understand their fate in aquatic and terrestrial environments. Cultures were established using lake water and sediment under methanogenic, sulfa...

"rug Biotransformation En0yme Interactions

Linalool Biotransformation with Fungi

Different fungal strains were screened for their ability to convert linalool into valuable flavour compounds. Aspergillus niger DSM 821, Botrytis cinerea 5901/02 and Botrytis cinerea 02/FBII/2.1 produced isomers of lilac aldehyde and lilac alcohol via 8hydroxylinalool as postulated intermediate. Linalool oxides and 8-hydroxylinalool accumulated as major products during fungal linalool biotransf...

Agrobacterium mediated biotransformation

Twenty-five years ago, the concept of using Agrobacterium tumefaciens (soil gm-ve bacterium) as a vector to create transgenic plants (natural transformation) was viewed as a prospect and a “wish.” Transgenic plants generated by direct DNA transfer methods (e.g., polyethylene glycol or liposome-mediated transformation, electroporation, or particle bombardment) often integrate a large number of c...