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Gelatine

Gelatine

(Science: physiology) a nitrogeneous colloid, not existing as such in the animal body, but formed by the hydrating action of boiling water on the collagen of various kinds of connective tissue (as tendons, bones, ligaments, etc). Its distinguishing character is that of dissolving in hot water, and forming a jelly on cooling. It is an important ingredient of calf's-foot jelly, isinglass, glue, etc. It is used as food, but its nutritious qualities are of a low order.

Both spellings, gelatin and gelatine, are in good use, but the tendency of writers on physiological chemistry favors the form in -in, as in the united states dispensatory, the united states pharmacopoeia, Fownes' watts chemistry, Brande & Cox's dictionary. Blasting gelatin, an explosive, containing about ninety-five parts of nitroglycerin and five of collodion. Gelatin process, a name applied to a number of processes in the arts, involving the use of gelatin. Especially: a method of producing facsimile copies of an original, written or drawn in aniline ink upon paper, thence transferred to a cake of gelatin softened with glycerin, from which impressions are taken upon ordinary paper. Vegetable gelatin. See gliadin.

Origin: f. Gelatine, fr. L. Gelare to congeal. See Geal.


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Identifying Bacteria

... + VP- negative castalase test- positive oxidase, hydrogen sulfide, citrate, phenylalanine, indole, urea, are all negative starch hydrolysis, and gelatine are positive. I have narrowed it down but I still can't find it. Please help me and Thank you very much.

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by marilynkatie
Sun Dec 04, 2011 5:11 pm
 
Forum: Microbiology
Topic: Identifying Bacteria
Replies: 1
Views: 1312

Re: Unknown Id. Bacteria

... methyl red test: + voges-proskauer test: + catalase: + oxidase: + hydrogen sulide production: - citrate: - phenylalanine deamination: - starch: + gelatine: + indole: - urea: + leaning more towards cereus. thanks bebe

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by bebe2
Fri Apr 23, 2010 4:08 pm
 
Forum: Microbiology
Topic: Unknown Id. Bacteria
Replies: 3
Views: 3526

blocking problems in a sandwich assay

... antibodies, and not stuck when there isn't. I've tried different blocking proteins/agents as BSA, serum, milk, tris (on a carboxyl surface), gelatine and a few more, both on the surface and the beads. I've also tried different washing procedures with different buffers in different steps during ...

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by yavanna
Thu Jun 14, 2007 6:41 am
 
Forum: Molecular Biology
Topic: blocking problems in a sandwich assay
Replies: 3
Views: 1689

help, problem

... incubation temperature. THINK !!! - How will you determine the end point of this reaction ? It is suggested that you take the final loss of the gelatine from the film base as your end point. You should inspect the tubes every 5 min – you will need to gently shake the tube each time to determine ...

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by martyn
Mon Apr 16, 2007 3:36 pm
 
Forum: Molecular Biology
Topic: help, problem
Replies: 3
Views: 3651


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