بررسی تغییرات زیستی هیدروکورتیزون توسط ریزجلبک ‏‎nostoc muscorum ptcc 1636‎‏

Nostoc muscorum pdf

Differentiation in Nostoc muscorum: nitrogenase is synthesized in heterocysts.

Cellular differentiation can be observed in certain filamentous blue-green algae after transfer of the cells from medium containing NH(4) (+) or NO(3) (-) to nitrogen-free medium. The appearance of differentiated cells (heterocysts) is accompanied by an increase in the activity of nitrogenase, an enzyme complex that reduces N(2) to NH(3). We have separated vegetative cells from heterocysts in d...

Biotransformation of AD and ADD using Nostoc muscorum

The potential of microalgae for steroid transformation has been studied less than other microorganisms. They have been applied for the years in the treatment of environmental pollutions and preparation of nutrients. At the first time, Abul-Hajj and Qian indicated the conversion of androstendione (AD) to testosterone with eleven different strains of microalgae. Previtera’s group showed the trans...

Biotransformation of AD and ADD using Nostoc muscorum

The potential of microalgae for steroid transformation has been studied less than other microorganisms. They have been applied for the years in the treatment of environmental pollutions and preparation of nutrients. At the first time, Abul-Hajj and Qian indicated the conversion of androstendione (AD) to testosterone with eleven different strains of microalgae. Previtera’s group showed the trans...

بررسی تبدیلات زیستی پروژسترون ، هیدروکورتیزون و پردنیزولون توسط سویه قارچی ‏‎acremonium strictum ptcc 5282‎‏ و آندورستن دیون توسط سویه قارچی ‏‎aspergillus terreus ptcc 5283‎‏

توانایی قارچ رشته ای ‏‎acremonium strictum ptcc 5282‎‏ در ایجاد تغییرات زیستی بر استروئیدهای دارویی پروژسترون ، هیدروکورتیزون ، پردنیزولون و همچنین قارچ سیاه ‏‎aspergillus terreus ptcc5283‎‏ بر ترکیب حدواسط استروئیدی آندروستن دیون در این تحقیق مورد بررسی قرار گرفته است.

External Factors Influencing Light-Induced Hydrogen Evolution by the Blue-Green Alga, Nostoc muscorum

This study was conducted to determine some physiological conditions which influence light-in­ duced hydrogen evolution by intact cells of the blue-green alga Nostoc muscorum. This activity was found to be dependent on the age of the culture, cultivation temperature, ageing of the cells, and on gassing the cultures with nitrogen or air. Nitrogenase is particularly ac­ tive after cultivation at 2...