Explain the indole production test, Biology

Assignment Help:

Explain the Indole Production Test?

Many microorganisms produce an enzyme tryptophanase which oxidizes amino acid tryptophan to produce pyruvic acid, indole and ammonia. We can analyze the production of tryptophanase by using SIM agar containing tryptophan. The presence of indole is then detected by adding Kovac's reagent which contains p-dimethyl amino benzaldehyde, butanol and hydrochloric acid. It produces a cherry-red reagent layer with indole (positive test).The role of acidified butyl alcohol is to extract the indole into the reagent layer which then react with dimethyl amino benzaldehyde.


Related Discussions:- Explain the indole production test

What is biogenetic law and define bilateral symmetry, What is Biogenetic La...

What is Biogenetic Law and define Bilateral symmetry? In brief, ontogeny recapitulates phylogeny. Or, developmental or embryological sequence of an animal repeats the evolution

Carbohydrate required for underweight - nutritional care, Explain the Carbo...

Explain the Carbohydrate required for underweight - Nutritional Care? Liberal amounts of easy to digest carbohydrates should be included in the diet. The intake of dietary fibr

Physiological condition for growth, PHYSIOLOGICAL CONDITION FOR GROWTH - ...

PHYSIOLOGICAL CONDITION FOR GROWTH - It depends on anabolism and cetabolism. If anabolism is more positive growth. If both are balanced growth is zero. If cetabolism is more

Removal of a patient''s peripheral intravenous catheter, Removal of a patie...

Removal of a patient's peripheral intravenous catheter resulted in brief bleeding and the loss of a small amount of blood. Which of the following processes occurred during the form

Ecosystem diversity, Ecosystem diversity measures based on the species com...

Ecosystem diversity measures based on the species composition of flora, or fauna, or other ecosystem properties, are all equally justifiable: but measures based on different crite

Environmental accounting, Valuation of biological resources includes the pr...

Valuation of biological resources includes the process of deriving a monetary value to the things that are not sold in the market. Examples are the value given to fuelwood gathere

Importance of fat synthesis and storage, Importance  of fat  synthesis  ...

Importance  of fat  synthesis  and storage : As  is clear from above  account, all  surplus nutrients, digested and  absorbed  from above the  immediate need of  body, are readily

Explain the anaesthesia and analgesia, Explain the Anaesthesia and Analgesi...

Explain the Anaesthesia and Analgesia Most implant surgery can be carried out under local anaesthesia, although some patients will require sedation or general anaesthesia. The

Name the various test batteries, Name the various Test batteries Test ...

Name the various Test batteries Test batteries typically assess the following domains: General cognitive ability Language ability Visuoperceptual and constructi

Endocrine glands of an insect, ENDOCRINE GLANDS OF AN INSECT - The endo...

ENDOCRINE GLANDS OF AN INSECT - The endocrine glands of cockroach are as follows. 1.       Intercerebral gland cells. These cells lie in the brain. They secrete brain horm

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd