/Tag: Bacteria


Transformation is the process of transfer of exogenous genetic material into the cell through the cell membranes resulting in alteration of genetic material of host cell. The transformation process required the recipient bacteria must be in a state of competence i.e. state of being able to take up exogenous material from the environment, which [...]

By |2018-04-19T09:13:10+00:00April 19th, 2018|Molecular Biology|Comments Off on Transformation

Gene cloning

Gene cloning is molecular technique in which gene of interest is copied to produced many identical copies of it. In this technique gene of interest is fused into a self-replicating genetic material i.e. plasmid. The insertion of gene of interest is done using self enzymes known as restriction enzymes. The molecule formed after the [...]

By |2018-04-18T09:59:18+00:00April 18th, 2018|Molecular Biology|Comments Off on Gene cloning

Nutritional Types of Bacteria

Nutrition is a substance required in biosynthesis and energy production and for microbial growth.All organisms require a Source of energy. On the basis of energy source organisms are designated as: 1. Chemotrophs: The organism that relies on chemical compounds for their energy 2. Phototrophs: The organisms which can utilize light as an energy source are [...]

By |2018-03-28T12:20:53+00:00March 28th, 2018|Fermentation, Food Microbiology|Comments Off on Nutritional Types of Bacteria

Characterization of Bacteria

Bacteria are the complex group of living things. Bacteria consist of only one cell. There are various species of bacteria, having one of the following shapes: Rod Coccus Spiral Some bacteria can live in temperatures above the boiling point and in cold below the freezing point. Bacteria may be helical or spiral in shape. [...]

By |2018-03-19T11:31:39+00:00March 19th, 2018|Food Microbiology|Comments Off on Characterization of Bacteria


It is the technique in which the microorganisms such as bacteria, fungi, and actinomycetes are used to transform hazardous contaminants into harmless products. While using chemicals for their own metabolism these microorganisms destroy organic contaminants. For e.g. Desulphovibrio desulfuricans are involved in the breakdown of mercury to methylmercury and Pseudomonas species are involved in converting [...]

By |2018-03-26T12:12:25+00:00March 18th, 2018|Food Microbiology, Plant Tissue Culture|Comments Off on Bioremediation

Health-Related Benefits of fermented foods

1. Degradation of undesirable compounds Microorganisms present in fermented foods produce some enzymes that may degrade undesirable and antinutritive compounds, for example, Phyticacid is found in legumes and seeds bind minerals such as iron and zinc, reducing their absorption when eaten. However, phytic acid can be broken down during fermentation by some species of [...]

By |2018-02-27T06:47:02+00:00February 21st, 2018|Fermentation, Food Microbiology|Comments Off on Health-Related Benefits of fermented foods

MPN method for coliform detection

Coliform bacteria are rod-shaped Gram-negative non-spore forming and motile or non-motile bacteria. Coliforms can ferment lactose with the production of acid and gas when incubated at 35–37°C. Most types of Coliform bacteria do not cause disease, but some can cause mild illness.Typical coliform groups include Citrobacter, Enterobacter, Hafnia, Klebsiella, and Escherichia. Coliforms are found in [...]

By |2018-02-27T08:46:42+00:00February 20th, 2018|Food Microbiology|Comments Off on MPN method for coliform detection

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