Shelf-Life Analyses
Shelf life is defined as the period of time when the desired sensory, chemical, physical, microbiological and nutritional value properties of the food product can be preserved. During this process, the food must maintain both its safety and quality characteristics. The shelf-life period should be determined by the manufacturer before the product is put on the market. Shelf-life period differs for each product. Different waiting conditions and shelf-life periods are determined for cheeses, fish, meat, vegetables-fruits, bakery products, frozen products.
Factors Affecting Shelf Life in Foods
These factors can be classified as environmental, meaning external factors, and internal factors that belongs to the structure of the food itself. Examples of environmental factors are factors such as temperature, packaging method, humidity (moisture), oxygen, light.
Frequently Asked Questions
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What is Shelf Life Analysis?
Shelf life analysis determines how long food products remain safe and fresh from production to consumption. Laboratory tests examine spoilage, microbial growth, and chemical changes.
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What is GMO Analysis?
GMO analysis detects whether food contains genetically modified organisms. Tests like PCR and other molecular methods are critical for consumer safety and regulatory compliance.
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Why is Shelf Life Analysis Important?
Shelf life tests ensure products stay safe, fresh, and high-quality. They prevent spoilage due to improper storage or production and ensure compliance with regulations.
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Which Foods Require Shelf Life Testing?
All food products including dairy, meat, bakery items, beverages, canned goods, and frozen foods. Test scope varies depending on the product.
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Which Products Require GMO Testing?
Grains, soy, corn, processed foods, and some beverages may require GMO analysis. Results are essential for labeling and legal compliance.
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Which Parameters Are Measured in Shelf Life Analysis?
Microbial load, pH, moisture, oxidation, color, odor, and taste changes are evaluated. These parameters determine freshness and safe consumption periods.
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Which Methods Are Used in GMO Analysis?
GMO detection uses PCR (Polymerase Chain Reaction), qPCR, and ELISA methods. These techniques provide rapid and accurate results.
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How Long Does Shelf Life Analysis Take?
Duration depends on product type and test scope. Rapid tests may take 1–2 weeks, while comprehensive shelf life studies can take 4–6 weeks
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How Reliable is GMO Testing?
GMO tests in accredited labs are highly accurate and reliable. PCR and qPCR methods can detect even low levels of GMO presence.
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How Are Shelf Life Analysis Costs Determined?
Costs depend on product type, number of tests, and scope. Long-term and comprehensive shelf life studies are more expensive.
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Is Shelf Life and GMO Testing Mandatory for Imported Foods?
Yes, both shelf life and GMO testing are required for imported foods to ensure safety and regulatory compliance. Accredited lab reports are often requested at customs.
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How is Shelf Life Analysis Conducted in the Lab?
Samples are prepared, stored under controlled conditions, and periodically tested for microbial, chemical, and sensory changes. Results determine shelf life.
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How Are GMO Test Results Interpreted?
Results are reported as positive/negative or quantitatively. Expert review ensures product labeling and regulatory compliance.
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Why is Shelf Life Testing Important for Human Health?
It ensures foods reach consumers without spoilage or microbial risk. Consuming spoiled products can pose serious health hazards.
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Why Should Shelf Life and GMO Tests Be Conducted in Accredited Labs?
Accredited labs follow ISO/IEC 17025 standards. Reports are officially valid and accepted for exports, CE marking, and legal inspections.
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