Microflora


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

microflora

[¦mī·krō′flȯr·ə]
(botany)
Microscopic plants.
(ecology)
The flora of a microhabitat.

Microflora

 

the microorganisms found in a given medium: soil, water, air, food products, human and animal bodies, and plants.

Natural substrates are usually inhabited by diverse microorganisms: bacteria, actinomycetes, yeasts, microscopic fungi, and algae. The number of microorganisms in a medium is determined by inoculating a batch (or volume unit) of the substance to be investigated on solid (or, using capillary technique, fluid) media. The number of colonies growing on a solid medium gives an idea of the number of microorganisms contained per g or milliliter (ml) of the sample of soil, water, or other medium to be investigated. The direct count method is also widely used. A preparation of the substance under study is stained, and the number of cells is counted under the microscope.

In the case of fluids, the liquid is poured through a membrane filter to determine the number of cells. It has been established by this method (based on the results of inoculations) that considerably more microorganisms inhabit water and soil than had previously been supposed. Depending on the degree of contamination, water contains from 5,000 to 100,000 cells per ml; in soil, the number usually reaches 2–3 billion per g. The skin, mucosae, stomach, intestine, and other organs serve as permanent habitats of normal microflora, which have no noticeable harmful effect on the body.

V. M. ZHDANOV

References in periodicals archive ?
That concept applies not only to hormones and neurotransmitters, but to your gut microflora as well.
In the meantime, fostering the skins's microflora is as important or more important than the replacement of it.
Therefore, we have examined carrot seed oil in order to assess its effects on performance, intestinal microflora, some serum biochemical parameters, meat color and meat shelf life of broilers.
Probiotics clearly play a key role in the intestinal microflora by maintaining its balance.
A probiotic is 'an oral supplement or a food product that contains a sufficient number of viable microorganisms to alter the microflora of the host and has the potential for beneficial health effects.'
The microflora colonizes virtually every surface of the animal's body that is exposed to external environment.
(4) Studies indicate that alterations in skin microflora play a significant role in conditions such as atopic dermatitis, psoriasis, acne and skin cancer.
Focus of Discussion: We can begin to construct a case for using primary and secondary plant metabolites, in foods and herbal medicines, to affect key elements of the microflora. Plant constituents can be shown, directly or indirectly, to affect the symbiotic relationships between the flora and host, and to support the robust commensural populations that can resist disruption and maintain gut surfaces.
Finch also used high-throughput DNA sequencing technology to demonstrate that the full diversity of the healthy microflora contained in FIN-403 successfully and stably engrafted in these patients.
Gut microflora is the population of microorganisms living in the human gut.
After birth, the infant gut is exposed to complex surrounding environment and maternal microflora which begin to colonize the GIT, showing an initial microbiome with a maternal signature [6, 16].
Evaluation of the richness of microflora of the samples by calculating Chao1 index showed that the microbiota of the samples from Daqing presented a higher richness.