l-norepinephrine and Calcium sorbate

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angel110
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Joined: Sun Jun 26, 2011 6:02 pm

l-norepinephrine and Calcium sorbate

Post by angel110 »

Calcium sorbate is the calcium salt of sorbic acid. Calcium sorbate is a polyunsaturated fatty acid salt.

It is a commonly-used food preservative; its E number is E203.



Calcium sorbate Prepared at the 51st JECFA (1998), published in FNP 52 Add 6 (1998) superseding specifications prepared at the 17th JECFA (1973), published in FNP 4 (1978) and republished in FNP 52 (1992). Group ADI 0-25 mg/kg bw for sorbic acid and its calcium, potassium and sodium salts, expressed as sorbic acid, established at the 17th JECFA in 1973.

Fine white crystalline powder not showing any change in colour after heating at 105o for 90 min



Melting range of sorbic acid derived from the sample

(Vol. 4) 132 - 135o

Acidify a solution of the sample with dilute hydrochloric acid TS. Collect the precipitated sorbic acid on a filter paper, wash free of chloride with water and dry under vacuum over sulfuric acid.

Test for unsaturation: to 2 ml of a 1 in 10 solution of the sample, add a few drops of bromine TS. The colour of the bromine disappears.
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