Bacterial Spore


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Related to Bacterial Spore: exosporium, bacterial capsule, forespore

Spore, Bacterial

 

an oval or rounded formation that occurs within bacilliform cells (sporiferous bacteria). Within each bacterial spore is a compact mass of deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and protein. Bacterial spores are resistant to the effects of poisonous substances and other unfavorable external factors; the resistance results from the lower water content (15–20 percent) in spores than in vegetative cells, the presence of four to five dense, poorly permeable membranes, and the transition of the enzymes to an inactive state. The resistance of spores to high temperatures—some spores can survive boiling for 30 minutes or longer—is caused by the presence of a large quantity of the calcium salt of dipicolinic acid in the membranes.

Upon encountering a fresh nutrient medium, the spores germinate in a polar or equatorial manner, giving rise to new bacterialcells.

References in periodicals archive ?
Meanwhile, strong chemistries have traditionally been used to kill bacterial spores in cleanroom operations, including formaldehyde, ozone, hydrogen peroxide, peracetic acid, bleach, chlorine dioxide, and hydrogen peroxide/peracetic acid blends.
Imagine bacterial spores are like a seed with a hard coating that preserves the DNA machinery," says Vashishta, the director of USC's Collaboratory for Advanced Computing and Simulations.
9% of all bacteria upon contact protecting you and your loved ones from germs such as MRSA, E Coli, Salmonella, Difficille and bacterial spores.
With mighty bursts of rehydration, bacterial spores offer a new source of renewable energy.
BOSTON -- A new type of electrical generator uses bacterial spores to harness the untapped power of evaporating water, according to research at Harvard University.
30 ( ANI ): Researchers were able to use a small strip of latex rubber coated with bacterial spores to power a new electric generator.
The Xenex "robot" uses pulse xenon to deliver UV light throughout patient rooms, operating rooms (ORs), equipment rooms, emergency rooms, intensive care units (ICUs) and public areas to destroy viruses, bacteria and bacterial spores in just 5-10 minutes per room.
Each room was irradiated between 25 and 45 minutes in order to eradicate both bacteria and bacterial spores," Dr.
To mimic conditions of use, the cartridges have also been validated to retain air-borne bacterial spores and viruses.
Thermal sterilization has traditionally been used to inactivate bacterial spores in low-acid foods.
Modelling Lag-Time in Predictive Microbiology with Special Reference to Lag Phase of Bacterial Spores.
This group of disinfectants is effective in destroying many harmful organisms including vegetative bacteria (bacteria in the actively growing state), mycobacterium, bacterial spores, enveloped viruses, non-enveloped viruses and fungi.