3 perishables of food and the main reason for microbial
growth.
So meat, fruit, and milk,...
3 perishables of food and the main reason for microbial
growth.
So meat, fruit, and milk, why do microbes cause these to
spoil.
Talk about water availability, pH, oxygen, temperature
Solutions
Expert Solution
Answer :-
Water availability - Bacteria fail
to grow in a food or other medium where the aw is lower than 0.94.
Bacteria require a higher aw than yeasts, which in turn require a
higher aw than molds. Thus, any condition that lowers the aw first
inhibits bacteria, then yeasts, and finally molds. Due to higher aw
of water bacteria grow over it and spoil the meat, milk and
bread.
pH:-The pH tells as about acidity
or alkalinity. pH value above 7 is alkaline and below it is acidic.
The bacteria grow most on pH 7 grow poorly or not at all below pH
4.lactic acid bacteria are exception and they grow on high acid
foods such as over milk, meat and on bread. And produce acid thus
spoil these thinga.
Oxygen - microbes which grow in the
presence of oxygen are called as aerobes and other which can not
are ccalled as anaerobs.The bacteria which grow over food are
generally aerobic and thus grow on food surface destroy these food
stuff. However aerobic bacteria grow only when this food stuff are
expose to. Environment but in pack condition or in air tight
container anaerobic bacteria can grow and spoil it.
Temprature-with increased of
temperature also inhabit the growth of microbes because
denaturation of enzyme will occur and at Lower temperature these
become inactive. Thus storing milk, meat and fruits at low prevent
there spoilage while at room temperature enzyme are maximally
active and thus microbes grow over it and spoil the food
stuff.
Fruits are spoil because the stored
polysaccharides in them are converted into the monosaccharide by
the mmicrobes thus more microbes grow over them and thus spoil the
food.
Select 3 of the factors that affect microbial growth and
discuss. (USLO 4.1)
Discuss microbial growth patterns. (USLO 4.2)
Discuss the different culture methods used in microbiology.
(USLO 4.3)
Identify 2 growth control mechanisms used to control microbial
growth. Explain how each works. (USLO 4.4)
Correlate aseptic technique in healthcare and microbiology.
(USLO 4.5)
JRN Inc. is expected to have a high growth rate in the next 3
years so its dividends are expected to grow at 20% per year in the
next 3 years. After that dividends are expected to grow at a stable
5% per year forever. Its most recent dividend was $3 per share and
its equity cost of capital is 12%. What is the stock's intrinsic
value per share?
Answers:
A) $65.70
B) $71.20
C) $56.30
D) $63.20
Many retail stores began to focuses on selling organic foods
starting in the late 1990s. The market for organics food really
grew after Whole Foods started to expand. Whole Foods began as a
small Austin based retailer that focused on selling natural
products in the 1980s. It gradually developed and spread through
the purchase of other smaller organic food retailers. Now, it is a
nationally known retailer with a strong focus on selling natural
foods to an upscale target market. ...