Shelf Life Estimator
Estimate best-before dates and remaining shelf life for FMCG products
Frequently Asked Questions
How is shelf life calculated for packaged food products?
Shelf life depends on water activity (moisture), fat oxidation rate, storage temperature, packaging barrier properties, and preservatives. Food scientists use Q10 temperature rules — which quantify how reaction rates change per 10°C — and water activity thresholds (above 0.6 Aw enables microbial growth) to estimate degradation timelines. This estimator applies these published models for common Indian FMCG categories.
What FSSAI regulations apply to best-before dates on packaged food?
Under FSSAI's Food Safety and Standards (Labelling and Display) Regulations 2020, all packaged food must display a 'Best Before' or 'Use By' date. Best Before indicates optimal quality (product may still be safe after). Use By is for perishables and is a safety cut-off. The date must appear as DD/MM/YYYY or Month/Year on the label. Non-compliance attracts penalties up to ₹2 lakh under FSS Act 2006.
What is the typical shelf life of namkeen and fried snacks?
Namkeen, bhujia, and fried snacks typically achieve 3–6 months shelf life at normal storage (25–35°C). The primary degradation mechanism is fat oxidation (rancidity). Vacuum or nitrogen-flush packaging extends this to 6–9 months. Cool and dry storage below 25°C can achieve 9–12 months for low-moisture products. Multilayer packaging with aluminium foil barrier is essential for premium shelf life.
Does packaging type significantly affect shelf life for Indian FMCG products?
Yes — packaging is often the biggest controllable variable. Multilayer flexible packaging with an aluminium foil barrier (used in most premium chips and namkeen packs) protects against oxygen and moisture. Nitrogen or CO₂ flushing further extends shelf life by displacing oxygen. PET bottles suit ambient beverages. Single-layer polyethylene packaging has the least barrier and suits only dry, low-fat products with short shelf lives.