Do you know how the shelf life is determined? Is it true that food cannot be eaten once it expires? In fact, there are many foods that are safe to eat even after the expiration date!
Bone takes you to explore the science behind the shelf life of food, introduces 10 ingredients that are still edible after the expiration date, and tells you common storage mistakes and tips to extend the shelf life of food!
How is the shelf life determined? The science behind it
According to the definition provided by the Food and Drug Administration, the effective shelf life refers to "the final period of time when commercially available packaged food can maintain its product value under specific storage conditions." In simple terms, the effective shelf life refers to the time point when the food remains safe and hygienic, edible, and has nutrition, taste, and flavor under specific storage conditions.
The shelf life of food is usually determined through scientific methods such as microbiological testing, physical and chemical index testing, and nutrient analysis, and factors such as food packaging, storage environment, and storage methods are taken into account. The main purpose of the shelf life label is to ensure consumer safety, but expiration does not immediately mean that the food has deteriorated, but the flavor or quality may gradually decline.
Many ingredients are better the fresher they are, but there are actually foods that go the other way! (Photo credit: Scott Warman on Unsplash)
You can still eat these 10 foods even if they are expired, so you don’t have to throw them away immediately!
1. Honey
Honey itself has an extremely low water content and high sugar concentration, which can effectively inhibit the reproduction of microorganisms. Even if it has exceeded its shelf life for several years, as long as there is no water contamination or foreign matter entering, honey can be safely eaten. In terms of taste, old honey may have a darker color and a slightly sour taste, but the nutritional value is still intact.
Some people think that old honey has better flavor and taste. (Photo credit: Arwin Neil Baichoo on Unsplash)
2. White rice
Although you may not know it, white rice has a shelf life! However, if white rice is properly stored (sealed, dry, and in a low-temperature environment), its shelf life is much longer than the label indicates. Long-term storage may cause the rice grains to dry and harden, but as long as they are not damp or infested with insects, they are still safe to eat after cooking, and the taste and nutrition are not affected.
3. Salt and sugar
Pure salt and sugar are highly stable dry foods, and basically have no real shelf life issues. Even if stored for a long time, they will only clump, but the nutrition and taste will not change at all. Even these two seasonings are natural preservatives for many foods, which can inhibit the growth of bacteria!
4. Dried pasta
Dried pasta has a very low moisture content, which is not conducive to the growth of microorganisms, so it can be stored for a long time. Even if it is more than a year past its expiration date, as long as the storage environment is dry and there is no odor, it can be eaten with confidence, and the taste will not be significantly different after cooking. But still pay attention to sealing, otherwise it will get damp or be used as food for insects!
5. Canned food
Canned food is sterilized at high temperature and sealed in a vacuum, so microorganisms cannot reproduce. Canned food is usually safe to eat even if it exceeds the shelf life by several months or even years if it is unopened, not expanded, and not corroded. The taste changes very little, and the flavor may only be slightly reduced at most.
Canned food is a good emergency food because of its preservation properties. (Photo credit: Joshua Olsen on Unsplash)
Six, hard cheese
Hard cheese (such as Parmesan cheese) has been matured for a long time, and its water content is extremely low. Its pH value can also effectively inhibit the growth of pathogens. As long as it is not moldy and has no odor, it can still be safely eaten a few months to half a year after the shelf life, and it may even be more rich and delicious.
Seven, frozen vegetables
Does this surprise you? In the modern technology quick-freezing environment, microbial activity is extremely suppressed, and nutrients can be preserved to a large extent. Even if it is several months beyond the shelf life, as long as it is not thawed and repeatedly frozen, it is generally safe to eat after cooking, but the taste may become slightly soft.
8. Dried beans
Dried beans such as red beans, mung beans, and soybeans are low in moisture and high in protein, making it difficult for bacteria to grow. If the storage environment is dry and pest-free, the taste and nutrition after cooking will still be almost the same after more than one year of the shelf life.
9. Spice powder
Spice powder (pepper, chili powder, etc.) is extremely dry and inhibits bacterial growth. Even if it is more than one year beyond the shelf life, it is safe. The taste may be slightly diluted, but it is still usable. However, remember to seal it, otherwise the dry and nutritious environment will be used by insects as a nest for laying eggs.
10. Chocolate
Chocolate contains high fat, high sugar, and low moisture, which inhibits bacterial growth. "Grease white frost" may appear on the surface of expired chocolate, but it is just fat crystallization, which does not affect safety. The taste is slightly worse, but it can still be eaten with confidence.
As long as you pay attention to the temperature and don't let chocolate melt, it can actually be stored for a very long time! (Photo source: amirali mirhashemianon Unsplash)
Common food preservation errors, how many of these 3 errors have you made?
Error 1: Raw and cooked food are not separated, cross contamination accelerates deterioration
Many people are accustomed to mixing fresh meat, seafood with cooked food, fruits and vegetables and other ingredients directly in the refrigerator, thinking that as long as they are placed in the refrigerator, they can be effectively preserved. However, this behavior is not only not conducive to food preservation, but also poses a serious food safety risk.
Raw meat and seafood contain many potential pathogens, such as salmonella and E. coli, which can survive for several days even after being refrigerated at low temperatures.
If raw and cooked food are not properly separated, these pathogens may leak through the meat juice or packaging, contaminating the surrounding fruits and vegetables or cooked food, causing the originally fresh fruits and vegetables and cooked food to spoil prematurely or produce odors, and even cause food poisoning risks.
The refrigerator is actually the scene of many people's food safety crises. (Photo source: nrd Unsplash)
Error 2: The refrigerator temperature is too high, and food spoils faster
How long have you not paid attention to the actual temperature of your refrigerator? Many people think that as long as the refrigerator is opened and it feels cool, it is in normal operation. But in fact, the best refrigeration temperature for food in the refrigerator is 0-4 degrees Celsius, and the freezer should be below -18 degrees Celsius.
Many old refrigerators will be inaccurate after years of operation. It is recommended to use a refrigerator thermometer to measure the actual temperature regularly, adjust the refrigerator temperature control in time, and ensure that there is appropriate space in the refrigerator so that the cold air can circulate effectively to improve the food preservation effect.
Error 3: Food is not completely sealed, and there are many problems with moisture and odor
In daily life, many people often open the packaging of snacks or ingredients, and fix them with rubber bands or clips casually and put them in the cabinet or refrigerator. In fact, this incomplete sealing method is very likely to cause food to get damp, which in turn accelerates the reproduction of bacteria and mold.
In addition, unsealed food is prone to odor. The smells of various foods in the refrigerator are mixed with each other, and the originally crispy biscuits may be contaminated with the fishy smell of seafood, affecting the experience when eating.
To avoid these situations, it is crucial to choose an effective sealing tool! Practical food sealing bands like Bone Character Sealing Band can quickly and effectively solve this problem!
A good sealing tool can extend the shelf life of food
3 practical tips to extend the shelf life of food
Tip 1: Make good use of vacuum packaging or sealing bands
Continuing with the third mistake, vacuum packaging or sealing can effectively block moisture and air, inhibit bacterial growth, and greatly extend the shelf life of food.
Like the Bone character sealer, it is a good helper that is essential for home use. It is made of high-quality all-silicone, formed in one piece, and the super-elastic silicone band design can adapt to various packaging sizes. Whether it is biscuits, nuts or seasonings after opening, it can effectively prolong the fresh flavor.
The Bone character sealer is specially designed with an eight-section card slot, which can be completely sealed with a light pull, and is suitable for bags of all sizes. The elastic silicone material is dirt-resistant and washable, so it can be kept clean and hygienic at all times and will not deform after repeated use.
The cute shape embellishes every delicious food, such as Patty Duck guarding biscuit snacks, Mr. Elk guarding jerky, and other different shapes, which also add fun and interest to daily life, making daily sealing work easy and enjoyable!
Bone's [Character Sealed Tie] is cute and everyone loves it!
Skill 2: Correct Refrigeration and Freezing Skills
Proper refrigeration (0-4°C) and freezing (below -18°C) to preserve food can inhibit bacteria and enzyme activity and extend the shelf life of food. And store in layers, avoid food contact, clean the refrigerator regularly, and understand the shelf life of food and the correct thawing method.