Overview
Traditional dairy products like khoa, burfi, peda, paneer, chhana, and shrikhand are integral to Indian diets. However, due to unhygienic manufacturing practices often employed by small-scale halwais and rural processors, these products are prone to microbiological contamination. This contamination not only reduces shelf life but also poses significant food safety risks to consumers.
As food consultants and food processing consultants, we emphasize the urgent need to modernize traditional dairy production using food technology consulting and engineering design for hygienic practices.
1. Microbiological Hazards in Traditional Dairy Processing
Unhygienic processing conditions contribute to:
- Rapid spoilage
- Growth of spoilage microorganisms
- Risk of foodborne illnesses due to pathogens
This highlights the importance of food manufacturing consultants and food safety consultancy services in implementing Good Manufacturing Practices (GMP) in traditional dairy units.
2. Microbial Load in Indigenous Milk Products
2.1 Khoa, Burfi, and Peda
- Khoa supports microbial growth due to its high moisture and nutrient content.
- Common microbial contaminants include:
- Bacteria: Gram-positive cocci, acid producers, psychrotrophs, and thermophiles
- Yeasts and moulds: More prevalent in khoa than in burfi and peda
- Alcaligenes, Pseudomonas, and Flavobacterium have been isolated from peda.
Recommendation by food industry consultants: Use controlled environment processing and packaging rooms.
2.2 Paneer
- Microbial quality varies with:
- Hygiene during preparation
- Storage and packaging
- Use of clean water and utensils
Contaminants may include:
- Coliforms
- Spoilage bacteria
- Moulds
2.3 Chhana
- Bacterial count increases significantly during storage at 37°C
- Dominant microorganisms:
- Micrococci (45%)
- Spore formers (34%)
- Rod-shaped bacteria (27%)
- Moulds: Aspergillus, Mucor, Rhizopus, Penicillium
2.4 Shrikhand
- Generally coliform-free when made under controlled conditions
- Contaminants may enter during:
- Filtration
- Conversion of chakka to shrikhand
- Addition of sugar
No outbreaks have been reported, but preventive hygiene is essential.
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3. Foodborne Pathogens in Dairy Sweets
Pathogenic bacteria found in traditional sweets include:
- Salmonella typhi
- Shigella dysenteriae
- Vibrio cholerae
- E. coli (including drug-resistant strains)
Contamination may occur post-processing, indicating poor hygiene.
4. Spoilage and Microbiological Defects
4.1 Common Issues
- Rancidity: Caused by lipolytic bacteria and yeasts
- Sour/stale flavors: Due to proteolytic and acid-producing organisms
- Mould growth: Due to high humidity, poor packaging, and high moisture
4.2 Control Measures
- Maintain refrigeration below 10°C
- Ensure hygienic processing
- Use airtight containers
- Control packaging room humidity
- Use antifungal-treated wrapping materials (e.g., potassium sorbate—though its use in products is restricted)
5. Paneer and Chhana Spoilage
- Susceptible to:
- Mould growth
- Fat rancidity
- Prevention:
- Store at 5–10°C
- Speed up marketing and avoid delays
- Maintain optimal moisture levels
Conclusion
Traditional dairy products require modernization of processes through food consultancy services. With the right interventions—such as training, hygienic factory design, and scientific handling—food industry consultants can help elevate the safety, quality, and shelf life of these culturally significant products.
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