For storing food in the fridge or freezer as well as transporting a meal, it is always practical to have an airtight box. Many households have therefore adopted the plastic box in the kitchen for greater practicality. However, like a toothbrush or a sponge, Tupperware is not eternal. After a certain time, it is indeed essential to replace it to prevent it from becoming harmful to your health. Fortunately, we can then give it a second life, notably by using it as a storage container. However, how do we know if we can still use it healthily and without risk? To cook and store food safely, here are the signs of wear and tear to look out for.
How do you know if you need to replace Tupperware or other plastic boxes?
tupperware food
Credits: iStock – Mod: ADGM
Damaged boxes become difficult to clean. In addition, they protect the food less tightly and transfer contaminants into the dishes. However, to be able to replace them, it is still necessary to recognize worn containers. Generally, a plastic box will fortunately develop signs of wear over time. This makes it easier to identify plastic boxes that you should be wary of. Here are these valuable clues.
1) The presence of wear at first glance
When you see large scratches, small cracks or chips , the watertightness of the container is no longer ensured . These seemingly minor defects can then allow external pathogenic bacteria to pass through more easily. Additionally, these visible abrasions pick up dirt more quickly and become more difficult to maintain. They should then be replaced.
2) In case of really persistent stains or odors
We have all already had to deal with plastic stained by tomato sauce or carrot puree. By following the good stain removal tips , nothing too worrying to deplore! The same goes for odors which can naturally linger, especially if forgotten for a long time. Again, you can always find ways to deodorize the box . However, problems with persistent odors or stains may indicate a problem with residual bacteria which can alter the taste of your food and increase the risk of cross-contamination. To avoid food poisoning, avoid putting too much pressure on the lifespan of your plastic boxes.
3) When closing Tupperware is no longer as effective
A plastic container that no longer closes properly should not be used for food storage. It can no longer properly maintain the freshness of food and protect it from bacterial contamination.
4) If the Tupperware was used in the microwave or dishwasher
Even if the manufacturer indicates otherwise, it is best to avoid putting your plastic boxes in the dishwasher or microwave . In fact, exposure to heat degrades this material more quickly, which is particularly sensitive to it. This can then deform the box, making it less waterproof, but also release microplastics and other substances toxic to human health into food (phthalates and potentially bisphenol A on older models). Even if your container is of a brand or quality, avoid heating it.
As summarized by Andrea De Vizcaya-Ruiz, doctoral professor at the University of California Irvine, they should ultimately be disposed of “ when they show wear, damage or deterioration ”. So be sure to check them regularly , for example before use. The specialist also ensures that the containers used by restaurants, particularly in the context of home delivery, are not suitable for long-term use .
How to make a plastic box last longer?
clean tupperware tomato carrot sauce stains cold water
YouTube capture of the Clean My Space channel
If you are really concerned about the durability of your container (and therefore also its ability to preserve food well), the best thing is to opt for a glass jar . More ecological, the glass jars, the ceramic container or, when possible, the metal box are in fact much more durable and solid . If, however, you already have an entire collection of plastic boxes and you intend to keep them carefully, follow these few tips to protect them from damage and make them last longer.
Take care to always wash Tupperware and plastic boxes by hand
Avoid putting your plastic containers in the dishwasher, as its aggressive wash cycle can damage them over time. Preferably hand wash with lukewarm water and mild soap . Adding baking soda, lemon juice or even toothpaste can remove unpleasant stains and odors effortlessly. However, the best thing is to prevent odors and stains from becoming embedded in the plastic . To do this, also rinse your containers immediately after use and allow them to dry completely before storing them.
Be careful what you put inside
In addition to not heating them in the microwave, also remember to never place hot dishes directly in plastic boxes. Let them cool to room temperature before storing. Also avoid storing foods rich in coloring such as tomato sauce, beetroot or soy sauce in plastic containers as much as possible, as they can stain the walls.
Be well equipped
When serving or stirring food in your plastic containers, opt for plastic or wooden utensils rather than metal utensils that could scratch the surface. Also, make sure you use the original lids , designed to fit your plastic boxes perfectly. Poorly fitted lids can allow air and moisture to enter, which can affect food quality.
Finally, don’t overload the Tupperware
Above all, do not overload your plastic boxes. Leave enough space for food to breathe and expand , especially when freezing.