Tartoff - Hobbs Broth, Granulated (Terrific Broth, Granulated)

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SKU:
GM1250
Synonym : Terrific Broth
For the cultivation of recombinant strains of Escherichia coli.
Synonym : Terrific Broth


Composition

Ingredients Gms/Litre
Casein enzymic hydrolysate 12.000
Yeast extract 24.000
Monopotassium phosphate 2.200
Dipotassium phosphate 9.400
Final pH (at 25°C) 7.2±0.2

Formula adjusted, standardized to suit performance parameters

Directions

Suspend 47.6 grams in 1000 ml distilled water containing 4 ml glycerol. Heat if necessary to dissolve the medium completely. Dispense in tubes or flasks as desired. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes.

Principle And Interpretation

Tartoff Hobbs developed the Terrific Broth Medium for cultivation of recombinant Escherichia coli strains. These strains have extended growth phase when cultivated in this medium (1). Tartoff-Hobbs Medium supports high cellular density and mass and maintains the growth in the logarithmic phase for a long time. Due to this fact, it provides greater yields of recombinant proteins and plasmid DNA. Often, Tartoff-Hobbs (Terrific) Broth substitutes Luria Bertani Broth (GM1151/ M1151), to get enhanced yields of plasmid DNA and recombinant proteins. The procedures for inoculation, incubation and generation of recombinant strains are detailed by Sambrook et al (2).

Casein enzymic hydrolysate and yeast extract supply the necessary nutrients and cofactors for the excellent growth of recombinant strains of E. coli. The addition of extra peptone and yeast extract in the medium allows higher plasmid yield per volume. The two phosphates provide good buffering action to the medium. Glycerol is used as the carbohydrate source. Unlike glucose, glycerol is not fermented to acetic acid.

Quality Control

Appearance
Cream to light yellow coloured granular medium

Colour and Clarity of prepared medium
Light amber coloured clear solution without any precipitate.

Reaction
Reaction of 4.76% w/v aqueous solution at 25°C. pH: 7.2±0.2

pH
7.00-7.40

Cultural Response
Cultural characteristics observed after an incubation at 35-37°C for 18-24 hours (Growth evident by turbidity).

Organism Inoculum (CFU) Growth
Escherichia coli ATCC 23724 50-100 good
Escherichia coli ATCC 39403 50-100 good
Escherichia coli ATCC 47014 50-100 good
Escherichia coli ATCC 53868 50-100 good

Storage and Shelf Life

Store below 30°C in tightly closed container and the prepared medium at 2-8°C. Use before expiry date on the label.

Synonym : Terrific Broth
More Information
Product Name Tartoff - Hobbs Broth, Granulated (Terrific Broth, Granulated)
SKU GM1250
Synonym Terrific Broth
Product Type Granulated
Physical Form Granular
Origin Animal
Packaging type HDPE
References 1. Tartoff K. D. and Hobbs C. A., 1987, Improved Media for Growing Plasmid and Cosmid Clones, Bethesda Res. Lab. Focus,9:12.2.Sambrook J., Fritsch, E. E., and Maniatis T., 1989, Molecular Cloning : A Laboratory Manual, 2nd Ed., Cold Spring HarborLab., Cold Spring Harbor, N.Y.
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