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Niger

niger

A republic in western africa, north of nigeria and west of chad. Its capital is niamey. It was first explored by the europeans in the late 18th century. It became part of the french sphere of influence in the latter part of the 19th century and was formally constituted as part of french west africa in 1904. Nigeria gained independence in 1960. The country took its name from the river niger flowing through it. The river's name came from the tuareg egereou n-igereouen, river of rivers, the second part of the name giving the modern european form niger.


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measuring cfu/ml using spectrophotometer

... suspension according to the standard which stated that I must use 620 nm wavelength. So can anybody advise me how to do it? As for a fungi (A. niger), is there any other way to prepare the suspension or using haemacytometer is easier? I have limited experience using spectrophotometer and usually ...

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by dreamy
Tue Nov 03, 2009 8:12 am
 
Forum: Microbiology
Topic: measuring cfu/ml using spectrophotometer
Replies: 3
Views: 5465

Heterotrophs and Carbon Fixation

Yup, it's possible. The example can be seen in industrial fermentation of citric acid by Aspergillus niger . In order to produce citric acid, the CO2 produced from pyruvate decarboxylation is re-used again by combining it with another pyruvate to produce oxaloacetate (by ...

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by victor
Fri Oct 31, 2008 1:35 pm
 
Forum: Microbiology
Topic: Heterotrophs and Carbon Fixation
Replies: 7
Views: 7398

The Fiber Disease

... the cells carrying >2700 positive charges was below 1.5%. In contrast, the viability of the stress-resistant spores of Bacillus subtilis var. niger (used as simulant of anthrax-causing Bacillus anthracis spores when testing bioaerosol sensors in various studies), was not affected by the amount ...

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by London
Thu May 18, 2006 4:10 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5429447

a fungus

Well, we observed them on a piece of bread which look white. I don't know... There can be species variations (as much as I know Aspergillus niger (hope I remember right) looks dark-colored) , I mean we are talking about genus. Also the color depends on how mature the organism is. Whatever, I ...

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by Poison
Thu Jan 19, 2006 7:48 pm
 
Forum: Microbiology
Topic: a fungus
Replies: 14
Views: 7341

Fungi Culture

Hi , I am doing work on A. niger . I have grown this culture but now I won't be using it for 2 days. Is there some way of arresting further growth. PLease help me out .

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by Credence
Sat Mar 19, 2005 10:51 am
 
Forum: Microbiology
Topic: Fungi Culture
Replies: 3
Views: 8703


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