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!
Q. Effect on Microbial Growth of pH?
Every microorganism has a minimal, a maximal, and an optimal pH for growth. In general, bacteria grow in the pH range of 6.0-8.0, yeasts 4.5-6.0 and filamentous fungi 3.5-4.0. Molds can grow over a wider range of pH than most yeasts and bacteria, and many molds grow at acidities too high for yeasts and bacteria. Most fermentative yeasts grow well in pH range of about 4.0 to 4.5, eg. fruit juices, and film yeasts grow well on acid foods, such as sauerkraut and pickles. On the other hand, most yeast does not grow well in alkaline foods and thus do not have a significant role to play in the spoilage of food products with high pH. However, large number of yeasts grows well in near neutral pH.
There are some exceptions for example some bacteria can grow in moderate acidity particularly those bacteria that produce acids as a result of their activities like lactobacilli and acetic acid bacteria. These have pH optima between 5.0 and 6.0 and others like the proteolytic bacteria can grow in foods with a high (alkaline) pH, as found in the stored egg white. Bacteria are more sensitive to pH than molds and yeasts, with the pathogenic bacteria being the most sensitive amongst them.
Autumn (fall) overturn In autumn or early winter the air temperature falls, resulting in the cooling of the surface waters. When the surface water cools to 4°C it becomes dens
show me the schamatic diagram of chrysomoeba?
what are the types of pseudopodia
Plasma membrane and cell wall is not the similar thing. Plasma membrane, also known as cell membrane, is the outer membrane common to all living cells and it is made of a phospholi
Explain the properties or characteristics of dietary fibre? Significant properties / characteristics of dietary fibre that affects its role are: 1) Solubility in water 2)
Cannulation : Typically blood is drained by gravity through two cannulae inserted into the superior and inferior vena cavae. During bypass, if the SVC and IVC are snared, the ent
If a large volume of fluid has shifted from the blood into the peritoneal cavity, how would this affect blood volume and hematocrit?
Define Energy requirements of infants? Energy: Energy requirements of infants are based on the energy intake through breast milk by infants of well-nourished mothers. Based on
Features of Phylum Porifera and Eumetazoa Table: Distinctive Features of Phylum Porifera and Eumetazoa The branch Eumetazoa, as we have seen above, consist of meta
what is the life cycle of a protozoa
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd