Canned Food

Canned food is a widely used preservation method that ensures the longevity and safety of food products by preventing microbial contamination and spoilage. The National Accreditation Board for Testing and Calibration Laboratories (NABL) provides accreditation to laboratories for testing food quality and safety, ensuring compliance with national and international food standards. The analysis of canned food involves testing for nutritional content, microbiological safety, chemical contaminants, and packaging integrity to ensure consumer safety and regulatory compliance.

Parameters for Analysis as per NABL


These parameters, as per NABL-accredited laboratory testing guidelines, help ensure that canned foods are safe, free from contaminants, properly processed, and compliant with national food safety regulations. Regular quality control and testing prevent foodborne illnesses and enhance consumer trust in packaged food products.

Physicochemical Parameters

  • Moisture Content (%) – Determines water activity and shelf stability
  • Total Solids (%) – Measures the concentration of solids in the food
  • Salt Content (if applicable) – Evaluates sodium levels
  • Ash Content (%) – Indicates the presence of minerals and inorganic matter
  • Brix Value (for fruits and syrups) – Measures sugar concentration
  • pH Value – Ensures acidity/alkalinity balance

Microbiological Analysis

  • Total Plate Count (TPC) – Determines overall microbial load
  • Yeast and Mold Count – Checks for fungal contamination
  • Salmonella, Listeria, Staphylococcus aureus – Pathogenic bacteria testing
  • Anaerobic Spore Formers (Clostridium botulinum) – Assesses botulism risk
  • Coliform & E. coli – Indicators of fecal contamination

Chemical Contaminants & Residue Analysis

  • Heavy Metals (Lead, Arsenic, Mercury, Cadmium, Tin) – Ensures absence of toxic elements
  • Pesticide Residues – Evaluates the presence of harmful chemicals
  • Aflatoxins & Mycotoxins – Tests for fungal toxins
  • Preservative Levels (Sodium Benzoate, Sorbic Acid, etc.) – Checks for compliance with limits
  • BPA Migration (from can lining) – Ensures food-grade packaging safety

Nutritional Composition

  • Total Fat Content (Saturated, Unsaturated, Trans fats)
  • Vitamins & Minerals (Vitamin C, Iron, Calcium, etc.)
  • Energy Value (Kcal per serving)
  • Carbohydrate Content
  • Protein Content
  • Dietary Fiber

Packaging & Integrity Testing

  • Leaker Detection Test – Identifies potential contamination risks due to leaks
  • Vacuum Test – Ensures the correct vacuum level inside the canned food
  • Seam Integrity Test – Evaluates the quality of can sealing
  • Swelling, Denting, and Corrosion Check – Detects packaging defects

Adulteration & Food Additives Testing

  • Sulfur Dioxide and Sulfites (for dried fruits and canned vegetables) – Preservative analysis
  • Artificial Colors and Dyes – Ensures compliance with permitted additives
  • Synthetic Flavoring Agents – Tests for non-permissible additives