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Food additives data book - wordpres

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SOLUBILITY % AT VARIOUS TEMPERATURE/pH COMBINATIONS:<br />

in water: @ 20°C 58.2<br />

in ethanol solution: @ 100% 6.5<br />

FUNCTION IN FOODS: Antimicrobial preservative: Fungi – broad spectrum; bacteria – mostly strict aerobes. Not lactic acid<br />

bacteria. Flavouring. Acidulant<br />

ALTERNATIVES: Potassium sorbate; sorbic acid; calcium sorbate; benzoic acid; sodium benzoate; potassium benzoate;<br />

calcium benzoate; propionic acid; sodium propionate; potassium propionate; calcium propionate<br />

TECHNOLOGY OF USE IN FOODS: The pKa is 4.8, so sorbic acid and its salts would normally be used at pH less than 4.8. It can, however,<br />

be used at up to neutral pH, but the activity reduces as the pH increases. In wine, it should only be<br />

used in conjunction with sulphur dioxide, otherwise a characteristic off-odour may result<br />

SYNERGISTS: Sulphur dioxide, carbon dioxide, sodium chloride, sucrose, propionic acid, dehydration, nisin with<br />

polyphosphates, benzoates<br />

ANTAGONISTS: Non-ionic surfactants<br />

FOOD SAFETY ISSUES: This is not an additive which has been subject to great criticism over safety<br />

Sodium sorbate 737

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