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!
Effect on Microbial Growth and Activity
Bacteria require higher aw for growth than fungi. Gram-negative bacteria have higher requirements than gram positives. Most spoilage bacteria do not grow below aw 0.91, while spoilage molds can grow as low as 0.80. Food-poisoning bacteria like Staphylococcus aureus can grow at aw as low as 0.86, while Clostridium botulinum does not grow below 0.94. Yeasts and molds can grow over a wider aw range than bacteria. The lowest aw values for bacteria is 0.75 for halophilic bacteria, while xerophilic molds and osmophilic yeasts can grow at aw values of 0.65 and 0.60, respectively. The limiting value of water activity for the growth of microorganisms is about 0.6 and below this value the spoilage of foods is not due to microorganisms but may be due to insect damage or chemical reaction such as oxidation. At a water activity of 0.6, corresponding to a water potential of -68MPa (Mega Pascals), the cytoplasm would need to contain very high concentrations of an appropriate compatible solute and it is probable that the macromolecules such as DNA would no longer function properly and active growth may stop.
Determine the Symptoms of Campylobacteriosis Symptoms: C. jejuni infection causes diarrhoea, which may be watery or sticky and can contain blood and faecal leukocytes (white
Q. What is Forebrain? Forebrain: Found in the area of the forehead, this part of the brain is concerned with all the emotions, planning, organising, reasoning, memory, movement
Generalised Seizures Generalised seizures are bilaterally symmetrical without focal onset. One subtype, the grand mal attack, is characterised by loss of consciousness and by s
Q. According to the cellular organization how are living beings divided into two groups? Cellular beings are divided into two groups, unicellular beings and the prokaryotes who
Q. Is the cell division happening during the entire cell cycle? What is the interphase? Cell division properly occurs throughout the mitotic phase of the cell cycle. During int
Define Gas liquid chromatography? This is used for separating and identifying volatile compounds of fatty acids, hydrocarbons, sterols, amino acids and lipids, even from nanogr
1. Biogas is produced by the activity of aerobic bacteria on animal waste 2. Methanobacterium is an aerobic bacterium found in rumen of cattle 3. Biogas, commonly called goba
Goat and sheep M. mycoides subsp. capri is the cause of caprine pleuropneumonia, a serious malady of goats. The disease is prevalent in certain parts of this country. The mort
Explain the effect of Deficiency of Copper in Human? Owing to the remarkable homeostatic mechanisms, copper deficiency in humans is rare. However, copper deficiency has been re
Q. What is the main nitrogen waste of humans? Human beings excrete largely urea eliminated with the urine.
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