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Food additives data book - wordpres

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Preservatives 784<br />

NAME: Calcium bisulphite<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: Dihydrogen sulfite/ Calcium hydrogen sulfite/ E227<br />

FORMULA: Ca(HSO3)2<br />

MOLECULAR MASS: 202.21<br />

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

sulphite, sulphur dioxide<br />

PROPERTIES AND APPEARANCE: Yellowish liquid, strong SO 2 odour<br />

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

in water: @ 20°C Soluble @ 50°C Soluble @ 100°C Soluble<br />

in sucrose solution: @ 10% Soluble @ 40% Soluble @ 60% Soluble<br />

in sodium chloride solution: @ 5% Soluble @ 10% Soluble @ 15% Soluble<br />

in ethanol solution: @ 5% Soluble @ 20% Soluble @ 95% Soluble<br />

@ 100% Soluble<br />

FUNCTION IN FOODS: Antimicrobial preservative, antioxidant and bleach<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

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