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One of the most common questions food manufacturers ask is: "How do we determine our best before date?"
Many organizations establish a best before date based on historical experience, industry practices, customer expectations, or previous products.
However, as products, ingredients, packaging, and manufacturing processes change, shelf life should be supported by data.
Best before date validation helps manufacturers understand:
PBR Laboratories provides shelf-life studies, food microbiology testing, water activity testing, moisture content analysis, and food quality testing services throughout Alberta, Western Canada, and Canada.
A best before date indicates the period during which a product is expected to maintain its intended:
A best before date is generally associated with product quality rather than food safety.
The date should reflect the period during which the product performs as intended under expected storage conditions.
Validation helps manufacturers:
Without testing, shelf-life assumptions may not accurately reflect real-world product performance.
Shelf life is influenced by multiple factors.
Changes in microbial populations over time.
Available water influences: Microbial growth | Product stability | Texture changes
Changes may affect: Product consistency | Texture | Shelf stability
Packaging influences: Oxygen exposure | Moisture migration | Product protection
Ingredients may significantly affect shelf life.
Factors include: Temperature | Humidity | Light exposure | Distribution conditions
The objective is to evaluate product performance throughout its intended storage period.
Questions may include:
What shelf life is being evaluated?
What storage conditions will be used?
Which quality attributes are important?
Examples: Day 0 | Day 30 | Day 60 | Day 90 | Day 120
Intervals depend on product type and expected shelf life.
Testing may include: Food Microbiology Testing | Water Activity (aw) | Moisture Content | Organoleptic Evaluation | Product-Specific Quality Testing
Results are reviewed over time to identify:
Quality changes
Microbial growth
Product degradation
Stability limitations
Data is used to establish a realistic best before date.
Examples: Aerobic Plate Count (APC) | Yeast & Mold | Total Coliforms | Escherichia coli (E. coli) | Lactic Acid Bacteria
Evaluates microbial growth potential and product stability.
Evaluates product consistency and moisture migration.
Assesses: Appearance | Flavor | Aroma | Texture
These evaluations often play a significant role in determining shelf life.
Organoleptic evaluation refers to sensory assessment of a product.
Characteristics commonly reviewed include:
In many products, sensory quality becomes the limiting shelf-life factor before microbiological limits are reached.
Manufacturers should consider revalidation when:
Products with similar formulations may behave differently.
Packaging often plays a major role in stability.
Quality changes frequently determine shelf life.
Even minor changes can affect stability.
Shelf life should be periodically reviewed as products evolve.
A best before date should be more than an estimate.
Validation provides data to support decisions regarding:
The goal is ensuring products perform as intended throughout their expected life.
A date indicating the period during which a product is expected to maintain its intended quality characteristics.
Not necessarily. Best before dates are generally associated with quality and product performance.
Through evaluation of microbiology, water activity, moisture content, sensory characteristics, packaging performance, and storage conditions.
Food microbiology testing, water activity testing, moisture content analysis, and organoleptic evaluations.
After formulation changes, ingredient changes, packaging modifications, process changes, or significant product updates.
Assessment of appearance, flavor, aroma, texture, and overall sensory quality.
PBR Laboratories provides shelf-life studies, food microbiology testing, water activity testing, moisture content analysis, organoleptic evaluations, and food quality testing services throughout Alberta, Western Canada, and Canada.
Contact PBR to discuss best before date validation, product stability studies, shelf-life challenges, formulation changes, packaging evaluations, and food quality objectives.
Choose PBR – Because Precision Matters, Defining Excellence in Laboratory Services Since 1984.