As a rule, unopened homemade canned food has a shelf life of one year and should be used no later than two years. Commercially canned foods must retain their best quality until the date of the expiration code on the can. This date is usually 2 to 5 years from the date of manufacture. After the abalone is taken out of the sea, the food usually has a sweet smell.
After prolonged storage in your home, abalone may start to produce a fishy smell. When seafood has a fishy smell, it's clear that abalone has gone bad. Even if you have a bad sense of smell, any small fishy smell of shellfish should cause you to disqualify its freshness. While not all canned foods will last indefinitely, most have a shelf life that exceeds their sell-by or sell-by date.
Lycopene is a natural plant compound found in tomatoes that has been associated with reducing the risk of cancer. Sharpness in the appearance, taste, and smell of abalone is the best way to tell if abalone is not fresh. But what about cans that have passed their “expiration date” for a few weeks, months or even years? Here are some guidelines on what to throw away and what to keep. Canned fruits and vegetables have the same and sometimes even better nutritional content compared to their fresh or frozen counterparts.
According to Eat By Date, raw fish can last much longer, between six and nine months if you freeze it. Although skim milk can last between seven and 10 days, you can keep whole milk five to seven days after the date indicated on the package. Governor, frozen minced meat will last three to four months, and a whole chicken or turkey can be frozen for more than a year. This prolific grain of cereal and staple food from many American breakfast tables can last up to 30 years, according to the Utah State University Extension.
According to the Institute of Can Manufacturers, “not a single incidence of foodborne illness has been reported due to metal packaging failures in more than 40 years and the consumption of billions of cans. Many factors affect how long a food will remain edible in the can, but foods that are kept at moderate temperatures (75 degrees or less) can last indefinitely. Most people would be surprised at how long packaged foods can last, said McMullen, who has safely eaten sour cream months past its sealed expiration date. So is it safe to eat canned food after its “sell-by date”? While canned goods that have passed their expiration date may not taste optimal, there is really no real health risk in consuming canned goods as long as they remain in good condition.
The guidelines indicate that while canned foods retain their safety and nutritional value well beyond two years, their color and texture may change after that time. According to the alliance, canned food (when kept at a relatively stable temperature) will remain at its highest quality for at least two years after processing.