Quantcast Figure 1-5. Growth curve of microorganisms. - Preservation of Foods

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Custom Search
 
  
 
Figure 1-5. Growth curve of microorganisms.
(1)  During a period of one to several hours, there is a lag phase in which
there is little or no increase in cell numbers. During this phase, the cells are becoming
adjusted to a new environment.
(2)  The log (logarithmic) phase is a period of rapid growth. The growing
cells divide and continue to do so at regular intervals until maximum growth can be
supported. In this phase, the microorganisms are well adjusted to their environment
and are able to multiply rapidly.
(3)  The stationary phase is one in which the population remains unchanged.
The rate of reproduction equals the death rate in this phase.
(4)  The decline (death) phase occurs when the death rate exceeds the rate
of reproduction.
b. Ways to Lengthen the Lag Phase. Growth control is important in food
preservation. Prevention or delaying food spoilage is accomplished by lengthening the
lag phase as much as possible. This can be done in several ways:
(1)  By the introduction of as few spoilage organisms as possible, that is by
reducing the amount of contamination. The fewer organisms present, the longer the lag
phase.
(2)  By avoiding the addition of actively growing organisms, which may be
growing on unsanitary containers, equipment, or utensils with which food comes in
contact.
MD0703
1-15



Medical News
Peer influence more likely to encourage smoking, say sociologists
(Medical Xpress)—Adolescents tend to be more powerful in influencing their...
medicalxpress.com
Improving life before it begins
A group of Mexican specialists in fetal medicine have successfully...
medicalxpress.com
Supermaterial gives rejected drugs a new chance
More than 80 percent of all drug candidates in the...
medicalxpress.com
Brain imaging proves second language learners can process language to nativelike levels
With enough practice, some learners of a second language can...
medicalxpress.com
Can strong parental bond protect infants down to their DNA?
Tulane University psychiatrist Dr. Stacy Drury received $2.4 million from...
medicalxpress.com
Post-discharge telephone calls may reduce hospital readmissions
(Medical Xpress)—It's an all too familiar story: a patient—specifically a...
medicalxpress.com
City 'sealed off' after man dies of plague in China
A Chinese city has been sealed off and 151 people...
medicalxpress.com
Legalising sex work would slash HIV toll, study says
Scrapping laws that ban sex work would slash the number...
medicalxpress.com
Researchers discover neuroprotective role of immune cell
A type of immune cell widely believed to exacerbate chronic...
medicalxpress.com
HIV epidemic 'smaller' than UN estimates: report
Anti-AIDS drugs have helped save 19 million years of human...
medicalxpress.com
Smoking while pregnant linked to ADHD in children
(HealthDay)—Children born to women who smoked during pregnancy appear to...
medicalxpress.com
National survey finds most US physicians are satisfied
(HealthDay)—Most U.S. physicians are satisfied, with satisfied physicians more likely...
medicalxpress.com
AIDS cure: Study sees advance for 'kick and kill' strategy
The elusive quest for an HIV cure received a boost...
medicalxpress.com
Encephalitis kills 60 in eastern India in fortnight
An outbreak of encephalitis has killed 60 people in two...
medicalxpress.com
Most comprehensive study to date shows success of the Millennium
A major new analysis from the Global Burden of Disease...
medicalxpress.com
Control of HIV pandemic will not be achieved without radical improvement in support for sex workers
Across the world, in high- and low-income countries, women, men,...
medicalxpress.com
Gene variant linked to schizophrenia, bipolar disorder and alcoholism
A rare gene variant discovered by UCL (University College London)...
medicalxpress.com
High school lacrosse players at risk of concussions other injuries
With over 170,000 students now playing high school lacrosse, more...
medicalxpress.com
Viral therapy could boost limb-saving cancer treatment
Viruses designed to target and kill cancer cells could boost...
medicalxpress.com
Middle East Respiratory Syndrome coronavirus detected in the air of a Saudi Arabian camel barn
Saudi Arabian researchers have detected genetic fragments of Middle East...
medicalxpress.com
 


Privacy Statement - Copyright Information. - Contact Us

comments powered by Disqus

Integrated Publishing, Inc.
9438 US Hwy 19N #311 Port Richey, FL 34668

Phone For Parts Inquiries: (727) 755-3260
Google +