Stimulation of Carotenogenesis by Microbial Cells

Stimulation of Carotenogenesis by Microbial Cells.

Spent mycelia of Blakeslea trispora recovered from a previous fermentation enhanced carotene production by mated cultures of the same organism. Peak yields of 107 to 142 mg of carotene per 100 ml of medium were achieved in 6 days. beta-Carotene constituted 92% of the total carotenoids produced. The enhancing substance was found present in an aqueous extract of the mycelium. Part of its activity...

Herbicidal Inhibition of Carotenogenesis Detected by HPLC

The target sites o f three herbicides which inhibit carotenoid biosynthesis have been charac­ terized using H PLC analysis o f pigm ent extracts from two higher plant systems, carro t cell suspension cultures and barley seedlings. Diflufenican causes an accum ulation o f phytoene and phytofluene. D ichlorm ate causes accum ulation o f phytoene, phytofluene, ^-carotene, neurosporene and ß-zeacar...

Biodegradation of crude oil by immobilized microbial cells in alginate beads produced by electrospraying technique

Background and Objective: Petroleum compounds are major contributors to aquatic environmental pollution. In recent years, biological treatments as environmental-friendly and cost-effective techniques have been used alongside the various physico-chemical methods. Microbial cell immobilization in hydrogel carriers has been the focus of researchers due to various advantages such as ease of microbi...

Studies in carotenogenesis. 12. The effect of temperature and thiamine concentration on carotenogenesis by Phycomyces blakesleeanus.

Chemical inducers of carotenogenesis.

Fourteen triethylamine derivatives including the 2-(4-chlorophenylthio)triethylamine (CPTA) were all found to be effective in inducing the formation of lycopene in Marsh white seedless grapefruit (Citrus paradisi, Rutaceae); however, they differed in the degree of effectiveness. The structural feature necessary for inducer activity appeared to be the tertiary alkylamine. Compounds with an S ato...