Define the composition of potato dextrose agar, Biology

Assignment Help:

Define the Composition of Potato Dextrose Agar?

This media is used for cultivation of yeasts, fungi and moulds.

Potato (Peeled) - 200.0 gm

Dextrose - 20.0 gm

Agar - 15.0 gm

Distilled water - 1000.0 ml

pH - 5.6

Peel off the potatoes. After cutting into small pieces, boil them in 500 ml distilled water and filter the extract through cheesecloth. Mix all the ingredients to the filtrate and make the volume to 1000.0 ml by distilled water. Potato dextrose agar is a non-selective and non-differential medium having potato infusion which encourages growth of yeasts and moulds. It contains potato tubers extract, dextrose, peptone and agar. Addition of tartaric acid (1.85 ml of 10% tartaric acid per 100 ml of PDA) lowers its pH and make it inhibitory for the growth of most of the bacteria.


Related Discussions:- Define the composition of potato dextrose agar

Determine the modification of native starch, Determine the Modification of ...

Determine the Modification of native starch Modification of native starch can be either physical or chemical. Chemical modification includes reaction of starch with  acid or al

Can the heat capacity of water be taken small or large, Q. Can the heat cap...

Q. Can the heat capacity of water be taken small or large ? What is the biological importance of that characteristic? Ans. From Thermology it is define that the quantit

Define about the paracellular route - calcium, Define about the Paracellula...

Define about the Paracellular Route - Calcium? It involves passive Ca transport through the tight junctions between mucosal cells. The salient features include: It is in

Carbohydrates, CARBOHYDR A TES Carbohydrate = hydrate of carbo...

CARBOHYDR A TES Carbohydrate = hydrate of carbon. Hydroxyl group present. Aldehyde group or keto group may present. Carbohydrates are polyhydroxy aldehydes

Absolute time, Absolute time is one of the two types of geologic time (rel...

Absolute time is one of the two types of geologic time (relative time being the other), with the distinct age date established generally by the decay of the radioactive elements,

Explain the term rastelli operations, Explain the term Rastelli operations ...

Explain the term Rastelli operations ? This is the operation of choice for transposition with VSD and left ventricular outflow obstruction. The principle of this operation is:

How bone density affect osseointegration, Q. How Bone density affect osseoi...

Q. How Bone density affect osseointegration? The most important bone property is density which is influenced by factors such as patient age and genetics. Higher density bones h

Explain acute infections fever, Explain Acute Infections Fever Acute In...

Explain Acute Infections Fever Acute Infections Fever:  Acute fevers are of short duration with acute symptoms, the body temperature may rise to above 104°F. Examples of such i

What is left ventricular hypertrophy, What is Left Ventricular Hypertrophy ...

What is Left Ventricular Hypertrophy (LVH) ? LVH develops as the response of the heart to chronic pressure or volume overload and is defined as a left ventricular mass exceedin

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