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
Survey indicates willingness of general population to donate tissue samples to biobank
A survey of nearly 1,600 individuals found that the majority...
medicalxpress.com
Achieving a world without AIDS: Scale must give way to focus, details
The global AIDS community has its sights set on three...
medicalxpress.com
Targeted MRI / ultrasound beats standard biopsy to detect high-risk prostate cancer
Targeted biopsy using new fusion technology that combines magnetic resonance...
medicalxpress.com
Novel radioguided brain surgery technique could help pinpoint cancerous tissue
A novel radioguided surgery technique could quickly and effectively identify...
medicalxpress.com
Low sodium levels increases liver transplant survival benefit in the sickest patients
Researchers report that low levels of sodium in the blood,...
medicalxpress.com
Screening: What Is the True Benefit?
(MedPage Today) -- Mortality benefit rarely achieved....
medpagetoday.com
FDA OKs CGM App
(MedPage Today) -- Dexcom Share system allows "followers" to monitor...
medpagetoday.com
Using stem cells to grow new hair
In a new study from Sanford-Burnham Medical Research Institute (Sanford-Burnham),...
medicalxpress.com
Association between parental time pressure and mental health problems among children
A doctor's thesis at Sahlgrenska Academy has found that children...
medicalxpress.com
Researchers gain new insights into hypothyroidism
An international research team led by physician-scientists at Rush University...
medicalxpress.com
Study shows salivary biomarkers predict oral feeding readiness in preterm newborns
Results from a study published online in the Journal of...
medicalxpress.com
Study finds traumatic brain injury treatment is ineffective
More than 1.7 million people in the U.S. alone suffer...
medicalxpress.com
Researchers find potential anti-cancer use for anti-epilepsy drug
Scientists at the University of York have discovered that a...
medicalxpress.com
Pfizer net down on lower sales, higher research, legal costs
Pfizer Inc.'s fourth-quarter profit fell by half as worsening generic...
medicalxpress.com
Appraisal of stressful or threatening situations by the brain
Researchers at the Research Center Translational Neurosciences of Johannes Gutenberg...
medicalxpress.com
Discrimination is bad for your health – and your kids too
Think about the last time you left the house. Did...
medicalxpress.com
Use sterile or boiled water for nasal washing abroad to avoid amoeba infection
The Norwegian Institute of Public Health has been informed that...
medicalxpress.com
Intracranial stimulation proved efficient in the recovery of learning and memory in rats
Stimulation of the hypothalamus completely reverses learning and memory deficits...
medicalxpress.com
Negative patient-doctor communication could worsen symptoms
Doctors who unintentionally communicate to patients that they do not...
medicalxpress.com
Why counting calories is not all about the numbers
Looking to stay healthy this year? A new regulation may...
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 +