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!
Food-borne Clostridium
Clostridium botulinum and Cl. perfringens, the two members of the group have been implicated in food-borne illnesses. C. botulinum causes classical food-borne botulism due to ingestion of preformed toxin in food.
Epidemiology: Clostridia grow anaerobically in rewarmed food dishes produce toxin. These are gram-positive, anaerobic sporulating, catalase negative rod shaped organisms.
Clinical features: In case of poisoning due to Cl. botulinum, incubation period var ies from 24-9 6 ho urs. Toxin absorbe d fro m gut blo cks acetylcho line at neuromuscular junction. Diplopia, dysphagia, dysphonia and respiratory involvement occur. Mortality rate is high.Incubation period in case of Cl. perfringens ranges from 8-16 hours. Enterotoxin produced during sporulation in gut causes hyper secretion. Sudden onset of profuse diarrhoea occurs that may occasionally be accompanied with vomiting. Recovery takes in 1- 4 days.
Diagnosis: Robertson cooked meat medium is used for enrichment, however, other specific enrichment media are also available. The horse blood agar and anaerobic egg yolk agar are the recommended plating media for isolation of Cl. botulinum. The colonies are raised or flat, smooth or rough and commonly show some spreading with irregular edge. The selective media for isolation of Cl. Perfringens are tryptose sulphate cycloserine (TCS) agar, sulphate-polymyxin-sulphadiazine (SPS) agar, Shahid Ferguson perfringens (SFP) agar and neomycin blood agar, etc. PCR based detection of Cl. perfringens targeting alpha gene or epsilon toxin has been used.
Define Role of Iron in Controlling Gene Expression? Iron metabolism is regulated by a complex co-ordinate mechanism. Recent evidence supports specific past-transcriptional mech
Bacteriophage Vectors Bacteriophages are viruses that attack bacteria. Mainly phage lyses the bacterial cells they infect (lytic phages). But many others may choose to follow e
A fruit fly has four pairs of chromosomes in its cells. At meiosis, how many dissimilar combinations of maternal and paternal chromosomes are possible in the gametes? In gamet
Write up your own Matlab program to do the job described by Show">http://www.avatar.se/molbioinfo2001/dynprog/adv_dynamic.html Show a few examples, your code does work. You wil
Casparian strip In plants, the impermeable waxy layer between the cells of endodermis which stops water and solutes from entering into the xylem, except by passing through the cyt
Q. What are the various biological examples in which lysosomic enzymes play a fundamental role? The remodelation of the osseous tissue, the function of the elimination of the t
Which biological molecule contains the genetic information that controls cellular functioning
Secondary, tertiary, and quaternary structures of proteins are spatial structures. Denaturizing is modification in any of these spatial structures that makes the protein deficient
Start with a cell with chromosome number 2n=6, and having two acrocentric pairs and one metacentric pair of chromosomes. Draw the cell in metaphase I. Indicate one pair of sister c
Q. What is ammensalim? The Ammensalism is the ecological interaction in which an individual harms another without obtaining benefit. The Ammensalism is an inharmonious (negativ
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