How long do cashews last
Sorry, this content is not available in your region. Not to be confused with Best Buy. Shelf life is the length of time that a commodity may be stored without becoming unfit for use, how long do cashews last, or sale. If the cans look okay, they are safe to use.
Discard cans that are dented, rusted, or swollen. Sell by date” is a less ambiguous term for what is often referred to as an “expiration date”. Most food is still edible after the expiration date. A product that has passed its shelf life might still be safe, but quality is no longer guaranteed. Shelf life depends on the degradation mechanism of the specific product. Most can be influenced by several factors: exposure to light, heat, moisture, transmission of gases, mechanical stresses, and contamination by things such as micro-organisms. For some foods, health issues are important in determining shelf life.
Bacterial contaminants are ubiquitous, and foods left unused too long will often be contaminated by substantial amounts of bacterial colonies and become dangerous to eat, leading to food poisoning. However, shelf life alone is not an accurate indicator of how long the food can safely be stored. The expiration date of pharmaceuticals specifies the date the manufacturer guarantees the full potency and safety of a drug. Most medications continue to be effective and safe for a time after the expiration date. A rare exception is a case of renal tubular acidosis purportedly caused by expired tetracycline. Shelf life is not significantly studied during drug development, and drug manufacturers have economic and liability incentives to specify shorter shelf lives so that consumers are encouraged to discard and repurchase products. Preservatives and antioxidants may be incorporated into some food and drug products to extend their shelf life.
Shelf life is often specified in conjunction with a specific product, package, and distribution system. However most reactions are accelerated by high temperatures, and the degradation of foods and pharmaceuticals is no exception. The same applies to the breakdown of many chemical explosives into more unstable compounds. However, as with many rules of thumb, there are many caveats and exceptions.
The same is true, up to a point, of the chemical reactions of living things. They are usually catalyzed by enzymes which change reaction rates, but with no variation in catalytic action, the rule of thumb is still mostly applicable. Just as temperature increases speed up reactions, temperature decreases reduce them. Therefore, to make explosives stable for longer periods, or to keep rubber bands springy, or to force bacteria to slow down their growth, they can be cooled. Temperature data loggers and time temperature indicators can record the temperature history of a shipment to help estimate their remaining shelf life. According to the USDA, “foods kept frozen continuously are safe indefinitely. Passive barrier packaging can often help control or extend shelf life by blocking the transmission of deleterious substances, like moisture or oxygen, across the barrier.
