All bacterial species can be produce enzyme?

Enzyme is a protein molecule and are biological catalysts , Microorganisms are the primary source of enzymes, because they are cultured in large quantities in short span of time and genetic...

02 March 2019 2,847 4 View

How can be used the Embryonated eggs for the viruses isolation and identification?

31 December 2018 7,432 0 View

Classification of bacteria depending of oxygen requirement ?

The environments in which some prokaryotes grow would kill most other organisms, the major physical factors which affect microbial growth are solutes and water activity, pH, temperature, oxygen...

31 December 2018 6,159 0 View

Problem in glucoamylase purification by gel filtration technique ?

31 December 2018 4,557 1 View

Show the type of culture media can be used for indole production test?

This test determines whether the microbe produces indole from the amino acid tryptophan. If indole is produced, it will react with a chemical reagent added after incubation to produce a color change.

31 December 2018 1,938 0 View

Compare between the Azoles & Echinocandins ?

Azoles : Agents : ketoconazole, fluconazole, itraconazole, voriconazole, posaconazole, multiple topical formulations , The azoles are a broad class of antifungal agents , Echinocandins are a...

31 December 2018 4,813 1 View

Show the major nutritional types of procaryotes ?

All living organisms require a source of energy. Organisms that use radiant energy (light) are called phototrophs. Organisms that use (oxidize) an organic form of carbon are called heterotrophs or...

31 December 2018 5,300 0 View

Problem in the Optimization of the growth conditions for maximum production of the peroxidase by Bacillus subtilis?

This working was achived in Section of Biology,faculty of Science, Kufa university which contain peroxidase separation and classically of route parameters to work greatest defer of peroxidase...

31 December 2018 9,207 0 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

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22 February 2021 9,932 11 View

Can anyone help or comment on solubilising chlorobutanol in aqueous injections in minimum time possible?

Please suggest solubilisation of chlorobutanol in injections. Tried pH and high temperature. But the issue is of assay drop. If anyone can suggest any solution. Its a commonly used excipient for...

21 February 2021 7,397 1 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

What properties of water shall be analyzed and evaluated to test the effectiveness of activated carbon?

I would like to ask what other properties of water (pH and such) shall be analyzed and evaluated to test the effectiveness of activated carbon from filtering the contaminants present in the water?

20 February 2021 9,422 8 View

Phenol-pH graphic?

We want to use phenol pH graphic to measure the pH of mediums before and after inhibitor application to cells. We have phenol absorbence values at 460, 560 and 720 nm wavelength. When we measure...

20 February 2021 7,700 3 View

How to measure the pH of Peat Soil?

Peat possess organic content above 75% and is highly acidic in nature (i.e. pH < 4). Before commencing stabilization, it is mandatory to know about the pH level of peat. Therefore, your...

18 February 2021 9,424 7 View