Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Explain the Direct Microscopic Counts (DMC)
The process includes making a smear of food sample on a microscope slide followed by staining with an appropriate dye and viewing and counting under the microscope. It is widely used for assessing the microbial quality of the milk and dairy products (Breed Count).
The method involves spreading 0.01 ml of the milk sample on 1 cm area of a slide. After drying and staining the slide, average number of bacteria per microscopic field is counted. The diameter and area of the microscopic field is calculated by micrometry. Number of bacteria per ml of the milk sample is calculated as:
Number of bacteria/ml = average number of bacteria per microscopic field x number of field x dilution factor.
Number of Microscopic fields = area over which milk is spread ÷ area of one microscopic field = 100 mm2 ÷ 0.02 mm2 = 5000 field
Dilution factor = 100 (0.01 ml of the sample is plated)
It is rapid and simple method by which cell morphology can be detected. Efficiency can be increased by using fluorescent dye. The method, however, gives the count of both viable and nonviable cells. Sometimes food particles may not be distinguishable from microorganisms. Some microorganisms may not take stain and not be counted. In spite of these drawbacks, it is used for quick assessment of microbial quality of foods. The discussion above focused on the methods we can use to assess the microbiological quality of food samples.
The major air pollutants are: (i) Carbon monoxide, CO (ii) Nitrogen oxides, (NO)x (iii) Sulphur oxide, (SO)x (iv) Ground level ozone (O3) (v) Hydrocarbons (
Coronary Vasoconstriction 1) Coronary flow limiting stenoses are caused by concentric or eccentric artherosclerotic plaques, with or without potential for local vasomotor change
PO L YSACCHARIDES Polysaccharides are complex carbohydrates. Polysaccharides are also called glycans. These are insoluble in water. Polysaccharides are not swee
A vertical section of an ovule is shown below. The correct ploidy levels of the four structures P, Q, R and S respectively are: a. n, 2n, n, n b. 2n, n, n, n c.
FORM S OF RIBOSOMES (1 ) Bound form - Attached to ER. Protein synthesis for secretion purpose occurs on bound ribosomes. (2 ) Free Ribosomes - Occur freely
What can I do with this topic to make it into a brochure
What is blood typing? Blood typing is the determination, by means of tests, of the categorization of a blood sample concerning blood group systems (specially the ABO system and
Placing the Implants in Immature Grafted Sites One of the most common causes of prosthetically related implant failure is believed to be the too rapid loading of the implant su
What are the parasympathetic neurons Patient A has a disease that has destroyed half of the alpha-adrenergic receptors on each of the smooth muscles that control the diameter o
Q. What do you mean by hydraulic modelling? Modelling is neither new nor relevant to hydraulic engineering only. It is practiced in the field of hydraulic machinery for testing
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd