Explain the glass test tubes - food microbiology, Biology

Assignment Help:

Explain the Glass Test Tubes - Food Microbiology

Sterile glass tubes are used for culturing microorganisms in liquid or solid media. Sterility in tubes is maintained by using cotton plugs developed by Schroeder & Von Dusch or by heat resistant plastic and metal caps. (a). Metal caps have the advantage over the cotton plugs as: (i) these save labour, and (ii) slip on and off the test tubes easily.

Solid media in test tubes can be used to make agar slants or deep tubes (b). Agar slants are prepared by allowing liquefied solid media to harden in the slanted position. These provide more surface area for culturing than deep tubes and are used for maintaining the pure microbial cultures. Agar slants have an advantage over the petri plate as: (i) it is easy to store and transport, and (ii) less readily contaminated. Agar deep tubes are prepared by allowing liquified solid media to harden in the upright position (b). These are used to (i) study the gaseous requirement of microorganism, or (ii) preparing agar plates after liquefecation.


Related Discussions:- Explain the glass test tubes - food microbiology

What is the importance of vitamin B2, What is the Importance of vitamin b2 ...

What is the Importance of vitamin b2 As a prosthetic group of the flavin enzymes, vitamin B 2 is involved in the reactions of almost all nutrients of plants and animals. They

Initiation of development - development biology, Initiation of Development ...

Initiation of Development - Development Biology We know that the various events collectively called the activation programme. These events are directly related to the formatio

What is the diffusion, Q What is the diffusion? Diffusion is the spread...

Q What is the diffusion? Diffusion is the spreading of substance molecules from a region where the substance is further more concentrated to another region where it is less con

Explain coarctation of aorta, Explain Coarctation of Aorta ? Coarctati...

Explain Coarctation of Aorta ? Coarctation of aorta may be isolated or it may have other co-existing cardiac and vascular lesions. In critically ill neonates with coarctation,

Explain about the nutrition security, Explain about the Nutrition Security?...

Explain about the Nutrition Security? Food security is a part of the broader concept of nutrition security. A household can be said to be nutritionally secure if it is able to

Benefit of hypothermic, Normal 0 false false false EN-I...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

What factors are altered when cells are moved, Which factors are altered wh...

Which factors are altered when cells are moved from an in vivo to an in vitro environment, and how do cells respond to these changes?

What is counsellor, Q. What is Counsellor? Counsellor is someone who gi...

Q. What is Counsellor? Counsellor is someone who gives advice about the problem. A counselor's role is to help patients help themselves. In our context  a counsellor is  a comm

Show gastrointestinal diseases and disorders, Q. Show Gastrointestinal Dise...

Q. Show Gastrointestinal Diseases and Disorders? Before discussing the many gastrointestinal problems, it is useful to understand the basic physiology of the gastrointestinal t

Illustrate about the principle of context, Illustrate about the Principle o...

Illustrate about the Principle of Context A third principle guiding the neuropsychological assessment of children is that environment contexts help to constraint and determine

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