Preparation of dilutions - standard or total plate counts, Biology

Assignment Help:

Define Preparation of Dilutions - Standard or Total Plate Counts?

1. Serial dilution of homogenized sample in an appropriate diluent.

Preparation of dilutions - Decimal dilutions are prepared in a diluent [peptone water (1%) and 0.5% NaCl] and some dilutions are plated. Selection of the dilutions to be plated is made on the basis of expected microbial load in the sample.

2. Plating on to suitable agar medium by pour plate or surface plating.

3. Incubation of plates at appropriate temperature (usually 35-37°C) for a given time (24-48 hours).

4. Counting of all visible colonies manually or using a Quebec or electronic counter.

5. Calculating CFU/ml or CFU/gm of the food sample.


Related Discussions:- Preparation of dilutions - standard or total plate counts

Interact with parent and child to exchange information , Interact with the ...

Interact with the Parent and Child to Exchange Information   At this time the nurse can learn why the child has come to the hospital and the concerns and expectations he and hi

Ontogeny, Ontogeny: This is the study of history of an individual. Ontogen...

Ontogeny: This is the study of history of an individual. Ontogeny is also known as ontogenesis and morphogenesis. Ontogeny describes the origin or the development of an organism -

Show Relation between tissue and the implant material, Relation between Tis...

Relation between Tissue and the implant material The biologic interaction between the tissue and the implant material at an  interface may result in a variety of phenomena such

Include the uncertainty interval and confidence level, What is the minimum ...

What is the minimum sample weight, at USP standards (U = 0.1% and k = 3), that can be measured on an analytic balance in which the repeatability is 0.0001 g. Include the uncertaint

Extension cord causing injury, A 19 year old model for Glamour magazine tri...

A 19 year old model for Glamour magazine tripped over an extension cord causing injury to her epidermis. She is afraid the injury will leave a scar. Based on your knowledge of rege

Explain difficult feeding and poor growth, Explain Difficult Feeding and Po...

Explain Difficult Feeding and Poor Growth to recognition of congenital heart disease? Difficult Feeding and Poor Growth: The parent of an infant with CHD may complain that the

Post disease as a result -endodontists, If the condition or the post diseas...

If the condition or the post disease as a result of intraradicular infection----> treated conventionally via apex " non-surgical ", ---->Here we have 2 options either coronal

Stage of meiosis, briefly describe the eggs and follicles, in rabbit

briefly describe the eggs and follicles, in rabbit

Nutrition, what is the mode of nutrition in tape worm

what is the mode of nutrition in tape worm

Proteins Requirement for nutrients, Q. Requirement for nutrients? Ulcer...

Q. Requirement for nutrients? Ulcer is a form of wound which if not healed on time call get perforated and bleed. Adequate protein intake ensures synthesis of new tissues esse

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