Each claims that they have been able to improve the quality of tobacco by inoculating the leaves with a pure culture of bacteria obtained from tobacco having high quality in flavour.
The cream which the butter makers desire to ripen is, as we have seen, already impregnated with bacteria, and would ripen in a fashion of its own even if no pure culture of bacteria were added thereto.
As yet our vinegar manufacturers have not applied to acetic fermentation the same principle which has been so successful in brewing--namely, the use, as a starter of the fermentation, of a pure culture of the proper species of bacteria.
A culture consisting of one kind of bacteria only is spoken of as a "pure culture," and accurate knowledge of bacteria depends on obtaining them in "pure culture.
After getting a "pure culture" the special characteristics of the organism must be ascertained in order to distinguish it from others.
Her first appearance was as Monimia in Otway's Orphans, in 1726 at the Haymarket.
Hansen set himself the task of studying the properties of the varieties of yeast, and to do this he had to cultivate each variety in a pure state.
A number of flasks containing a nutrient medium were each inoculated with one drop of this mixture; it was found that some remained sterile, and Lister assumed that the remaining flasks each contained a pure culture.
Lister for isolating a pure culture of lactic acid bacterium.
Most of this material was badly contaminated, yet, from that sent in during the colder season they successfully isolated the bacillus in pure culture in a majority of the cases.
In three fetuses the bacillus was found in the intestinal contents in pure culture; in one fetus it was isolated from the blood.
Each bacterium capable of growth gives rise to a colony visible to the naked eye, and if the colonies are sufficiently apart, an inoculation can be made from any one to a tube of culture-medium and a pure culture obtained.
The simplest case is that in which only one variety of bacterium is present, and a "pure culture" may then be obtained at once.
Then he sows his selected grain, which is merely a pure culture, and by the rapid growth of this, other forms are held in check.
In order to secure the beneficial results presumably attributable to the use of a starter, natural as well as a pure culture, it should be employed in cream in which the bacteria have first been killed out by pasteurization.
A culture thus obtained is called a pure culture since it contains but a single kind of an organism, as the colony is the result of the growth of a single cell.
Such starters are known as pure culture or commercial starters, and are prepared in both liquid and dry form.
The maker can not, therefore, be certain that the addition of a pure culture to raw cream will effectively control the type of fermentation.
With a pure culture of lactic bacteria, there is little difficulty in this regard, but as soon as gas-forming bacteria are introduced, trouble is likely to result.
When species were first isolated in pure culture it was found that they behaved somewhat differently under differing circumstances.
As a result of these rapid subcultures, the facultative anaerobe will be secured in pure culture at about the third or fourth generation.
Determination of Pathogenetic Properties of Bacteria already Isolated in Pure Culture~ (see page 315).
The resulting growth will almost certainly be a pure culture of the yeast.
Lambert's Pure Culture Spawn" produced by the American Spawn Company, of St. Paul, Minn.
Some remarkable results have been obtained by the use of pure culture spawn.
A Cluster of 50 Mushrooms on One Root, Grown from "Lambert's Pure Culture Spawn" of the American Spawn Co.
This organism has been found in pure culture in suppurative conditions of bone, of cellular tissue, and of internal organs, especially during convalescence from typhoid fever.
There is redness and œdema of the overlying soft parts, and swelling with vague fluctuation, and on incision there escapes a yellow creamy pus, or a brown syrupy fluid containing the typhoid bacillus in pure culture.
Having obtained a pure culture of bacteria, they may easily be studied under the compound microscope.
When we have succeeded in isolating a certain kind of bacterium in a given dish, we are said to have a pure culture.
In order to get a number of bacteria of a given kind to study, it becomes necessary to grow them in what is known as a pure culture.
It is well within the power of any dairyman to prepare what is practically a pure culture of the same bacterium as is supplied from the laboratory.
It has been ascertained that the starter is practically a culture of bacteria, which, if desired, may be obtained as a pure culture.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "pure culture" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
