🍲 Preservatives, Colours, and Additives
Role and use of preservatives, colours, and food additives in processed fruit and vegetable products.
Food preservatives and colours are used to improve shelf stability and appearance, but only within legally permitted categories and limits.
Preservatives: Meaning and Classes
A preservative is a substance that inhibits, retards, or arrests growth of spoilage microorganisms.
Class I preservatives include traditional agents such as salt, sugar, vinegar, and spices.
Class II preservatives include regulated chemical preservatives such as benzoates, sulfites, sorbates, nitrates/nitrites (specific uses), and selected antimicrobial additives.
Sulfur Dioxide and Benzoates
Sulfur dioxide and its salts (for example KMS) are widely used in fruit product preservation within permitted limits.
Benzoic acid and sodium benzoate are common for acidic products.
Effectiveness depends on pH, concentration, and product type. Overuse can affect sensory quality and safety compliance.
Food Colours
Natural and synthetic food colours are used in processed products where appearance standardization is needed.
Only approved colours and purity standards are permitted. Heavy metal contamination limits must be respected.
Permitted vs Prohibited Colours
Regulatory frameworks define permitted natural colours, permitted synthetic colours, and banned substances.
Prohibited colourants or non-food-grade dyes must never be used in food products.
Practical Compliance Points
Use only food-grade additives, verify source quality, apply only approved limits, maintain batch records, and follow current FSSAI standards.
Label claims and additive usage should align with legal requirements.
Summary Cheat Sheet
| Topic | Key point |
|---|---|
| Preservative classes | Class I (traditional) and Class II (regulated chemicals) |
| Common fruit-product preservatives | SO2/KMS and sodium benzoate |
| Colour use | Only approved food colours with purity compliance |
| Safety control | Respect legal dose limits and contamination standards |
| Industry practice | Source verification, records, and regulatory alignment |
References
2 sources • [1] [2]
References
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