Overview
ISO 16779:2015 - Sensory analysis - Assessment (determination and verification) of the shelf life of foodstuffs describes sensory-based methods to determine and verify the shelf life (best before/use by dates) of foods. The standard focuses on evaluating sensory characteristics - appearance, odour, flavour, taste, trigeminal sensation and texture - over an assumed preservation period. It supports development of product-specific approaches and complements microbiological, chemical and physical investigations used in shelf-life calculations.
Key topics and requirements
- Scope and intent: Sensory tests as a primary tool for shelf-life assessment; users remain responsible for safety, health practices and regulatory compliance.
- Sampling plan elements: Specification of starting point, test period, test intervals, endpoint, choice of test methods, and number/amount of test and reference samples.
- Test and reference samples: Test samples should be representative (recipe, manufacturing, packaging). Reference samples can be historical data, freshly produced controls, or samples stored to minimize change. Consumer data may complement references.
- Storage conditions: Defined as specified, not specified, or intended to accelerate product changes. Storage records are required. Accelerated conditions must be adapted to the product; Arrhenius law may help when water activity links to shelf life. The document gives practical RRT (reaction/rate/temperature) examples (RRT = 2) to illustrate accelerated testing.
- Test methods: Use of sensory methods - discrimination tests, descriptive tests, hedonic tests - and possible combinations. Choice depends on product, aim and sampling plan.
- Evaluation and reporting: Results evaluation and a documented test report are required; the standard references ISO 5492 (sensory vocabulary) for terminology.
Practical applications
- Determining or verifying best before and use by dates during product development and quality assurance.
- Designing sensory portion of shelf-life studies for new formulations, packaging changes, or novel ingredients.
- Implementing accelerated sensory tests for long-life products (frozen, dried) to reduce study duration.
- Supporting cross-functional teams (R&D, packaging, QA, regulatory) when sensory quality is a key shelf-life determinant.
Who should use ISO 16779:2015
- Food manufacturers, sensory scientists and shelf-life specialists
- R&D teams developing new products or packaging systems
- Quality assurance and regulatory affairs professionals responsible for labeling and product durability claims
Related standards
- ISO 5492 - Sensory analysis: Vocabulary (normative reference cited by ISO 16779:2015)
Keywords: ISO 16779:2015, sensory analysis, shelf life, foodstuffs, sensory tests, accelerated storage, sampling plan, best before date, use by date, ISO 5492.