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Food additives data book - wordpres

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Preservatives 782<br />

NAME: Calcium sulphite<br />

CATEGORY: Antimicrobial preservative<br />

FOOD USE: Bleaching agent/ Antimicrobial/ Preservative/ Dough modifier/ Vitamin C stabiliser. Not for use in<br />

meats, sources of vitamin B1, raw fruits and vegetables, or fresh potatoes<br />

SYNONYMS: E226<br />

FORMULA: Ca O3 S(1/2 H2O)<br />

MOLECULAR MASS: 129.15<br />

ALTERNATIVE FORMS: Sodium sulphite, sodium bisulphite, sodium metabisulphite, potassium metabisulphite, sulphur dioxide,<br />

calcium bisulphite<br />

PROPERTIES AND APPEARANCE: Dihydrate, crystals or powder<br />

MELTING RANGE IN °C: -1/2 H20 >250<br />

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

in water: @ 20°C 0.0043 @ 100°C 0.0011<br />

FUNCTION IN FOODS: Preservative in cider and fruit juices; disinfectant in brewing vats; in sugar manufacture<br />

ALTERNATIVES: Combination of antimicrobial preservative, antioxidant and bleach<br />

TECHNOLOGY OF USE IN FOODS: Multifunctional – an antimicrobial preservative, an antioxidant and a bleaching agent<br />

ANTAGONISTS: Sulphur dioxide is very reactive and binds to many substances in foods including oxygen, aldehydes,<br />

some ketones, sugars, carbonyls, thiamin, nucleotides, colours, anthocyanins<br />

FOOD SAFETY ISSUES: Normal humans are reasonably tolerant to ingested sulphites, but some individuals are hypersensitive<br />

and may be subject to asthma attacks and even life-threatening anaphylaxis

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