Involvement of two specific causes of cell mortality in freeze-thaw cycles with freezing to -196 degrees Celsius

Article Abstract:

A study is conducted to examine cell viability after freezing. Two distinct ranges of temperature were identified as corresponding to stages at which yeast cell mortality occurred during freezing to minus196 degrees Celsius, the upper range related to the temperature of crystallization of the medium and the lower temperature range related to recrystallization that occurred during thawing.

Genetic aspects, Yeast fungi, Yeasts (Fungi), Freezing points, Freezing

---

Cell size and water permeability as determining factors for cell viability after freezing at different cooling rates

Article Abstract:

Research examines the viabilities of different cell types, such as yeast cells, bacterial cells, and human cells, with respect to their cooling rate from 5 and 30,000 C per minute. Results show a U-pattern for the cell viability versus cooling rate. All cell types show an higher viability at low and very high cooling rates.

France, Influence, Cells (Biology), Cells, Thermal properties, Cryobiology, Cooling

---

Synergistic and antagonistic effects of combined subzero temperature and high pressure on inactivation of Escherichia coli

Article Abstract:

A study was conducted on the combined effects of subzero temperature and high pressure on the inactivation of Escherichia coli. It was observed that a synergistic interaction between subzero temperature and high pressure occurred in their effects on microbial inactivation.

Escherichia coli, Viruses, Virus inactivation, Materials at high pressures, High pressure effects

Similar abstracts:

• Abstracts: Involvement of two cytosolic enzymes and a novel intermediate, 5'-oxoaverantin, in the pathway from 5'-hydroxyaverantin to averufin in aflatoxin in biosynthesis
• Abstracts: Assessment of production conditions for efficient use of Escherichia coli in high-yield heterologous recombinant selenoprotein synthesis
• Abstracts: Detection and identification of Lactobacillus species in crops of broilers of different ages by using PCR-denaturing gradient gel electrophoresis and amplified ribosomal DNA restriction analysis
• Abstracts: Quantification of Campylobacter spp. in chicken rinse samples by using flotation prior to real-time PCR. Rapid and specific detection of salmonella spp. in animal feed samples by PCR after culture enrichment
• Abstracts: Detection of Cryptosporidium oocysts in water: Effect of the number of samples and analytic replicates on test results

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.