Omar Khalid
Plastic containers are incredibly convenient for storing food, but they can sometimes affect the smell and taste of the food inside. This is because common plastics are not 100% impenetrable to liquids and gases, and can therefore absorb and release odours and flavours. This can be caused by volatile compounds (quick-to-evaporate chemicals that create smells and flavours) being released due to factors such as light, oxygen, time, and heat. Additionally, plastic containers can absorb and retain odours from the food stored inside, especially if they are stored with the lids on or put away while still wet. This can result in your food smelling and tasting like plastic.
| Characteristics | Values |
|---|---|
| Cause of plastic smell | The plastic container may have absorbed the food's odour. |
| The plastic container may have degraded due to exposure to light, oxygen, time, and heat. | |
| The food may have absorbed the smell from the plastic packaging. | |
| Solutions | Wash the container with a paste made of baking soda and water. |
| Soak the container in a mixture of white vinegar, baking soda, and water. | |
| Place a piece of charcoal in the container for a day or two. | |
| Store the container with a pinch of salt in it. | |
| Place crumpled-up newspaper inside the container. |
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What You'll Learn
- Plastic containers are porous and can absorb food odours
- Volatile compounds in plastic can be released by heat, light, oxygen, and time
- Plastic packaging can cause flavour contamination
- Plastic containers should be washed with baking soda and water to remove odours
- Glass is inert and does not affect food flavour
Plastic containers are porous and can absorb food odours
Plastic containers are incredibly convenient for storing food, but they can also absorb and retain the scents and odours of the food stored in them. This is because plastic containers are porous and can absorb food odours. Even after washing, these odours can linger, and the plastic may continue to smell like the food it once held. This is especially true if the containers are stored with their lids on, as the smell becomes trapped inside.
The porous nature of plastic containers means they can absorb and hold onto food particles and liquids, which can result in an unpleasant smell. This is why it is recommended to store plastic containers with their lids off and to ensure they are completely dry before sealing them. This allows any trapped odours to dissipate and prevents the growth of bacteria, which can also contribute to unpleasant smells.
The type of plastic used in food storage containers is typically polypropylene, which is effective at containing solids and liquids but is less effective at containing gases. This is why food odours can so easily permeate and be retained by plastic containers. The molecules in common plastics are not chemically bonded to each other, which allows for greater porosity and the ability to absorb and release gases and odours.
To prevent and eliminate food odours in plastic containers, there are several household remedies that can be effective. One method is to use baking soda, either by itself or mixed with water to form a paste, and rub it inside the container. Leave it to sit for a few hours or overnight, then rinse the container with water and dish soap. Baking soda is a powerful natural deodorizer and can effectively neutralize and absorb food odours.
Another method to remove food odours from plastic containers is to use white vinegar and baking soda. Mix one cup of white vinegar with a quarter cup of baking soda in a large bowl, then place the plastic container in the bowl and add water until it is submerged. Soak the container in this mixture for one to two days, then wash it in the dishwasher or with soapy water to get rid of the vinegar smell. This method will help to eliminate any lingering smells and leave your plastic containers fresh and odour-free.
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Volatile compounds in plastic can be released by heat, light, oxygen, and time
Plastic containers are incredibly convenient for storing food. However, they can also retain the scents of previously stored food due to their porosity. This can result in your food smelling and tasting like plastic.
Oxygen and time also play a role in flavour contamination. For example, water in clear plastic bottles left in the sun can become contaminated with the starting products used to make the plastic. Similarly, bottled water left in a hot car for an extended period may develop an unpleasant plastic taste.
To mitigate these issues, some companies have developed methods to scent food packaging. This helps to mask any off-flavours and prevent "flavour scalping," where food absorbs unwanted aromas from the packaging.
Additionally, it is essential to store plastic containers properly to prevent odour retention. Keeping containers with lids off and ensuring they are dry before storage can help reduce the likelihood of unpleasant smells.
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Plastic packaging can cause flavour contamination
The smell won't come from the polymers, but from small molecules that are volatile at room temperatures. These could be additives, left-over monomers from the polymerisation process, or breakdown products. Common plastics exude their more-volatile components – plasticisers such as bisphenols, for example, which can be smelled and tasted by humans.
The four main factors that cause volatile compounds (the quick-to-evaporate chemicals from which we determine smells and flavours) to be released are light, oxygen, time, and heat. These factors can also cause plastics to degrade.
To avoid flavour contamination, some companies have devised methods for scenting food packaging. For example, a company in America called ScentSational Technologies has developed methods for scenting food packaging, partly as a means of mitigating flavour scalping.
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Plastic containers should be washed with baking soda and water to remove odours
Plastic containers are convenient for storing food, but they can retain the scents of previously stored foods due to their porosity. To remove odours from plastic containers, a mixture of baking soda and water can be used. Here are some steps you can follow:
First, mix one tablespoon of baking soda with one cup of water to create a paste. Baking soda is a powerful natural deodorizer and can effectively absorb lingering food smells. Next, rub the paste onto the interior of the plastic container, ensuring it covers all surfaces. Once the paste is applied, let the container sit overnight to allow the baking soda to absorb any bad smells.
After letting the paste sit for several hours or overnight, wash the container with water and dish soap. Use a soft sponge or cloth to gently scrub the container, ensuring that all the paste is removed. Rinse the container thoroughly until all traces of the paste and any remaining odours are gone. Finally, dry the container completely before storing any new items. This process should effectively remove any unpleasant odours from your plastic containers.
Additionally, there are other methods to remove odours from plastic containers. One approach is to use vinegar and baking soda. Create a mixture of vinegar and baking soda, apply it to the container, and let it sit for a few hours before rinsing it out. Another method involves using fresh or used coffee grounds. Place the dry coffee grounds in the container, seal it, and leave it overnight. In the morning, remove the grounds and rinse the container. These methods, including the baking soda and water approach, can help eliminate any unwanted smells from your plastic containers.
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Glass is inert and does not affect food flavour
When food starts to smell or taste like plastic, it can be off-putting and concerning. While there could be several reasons for this, one common explanation is that your food may have come into contact with certain chemicals or materials that impart a plastic-like odour. This could happen during storage, packaging, or even cooking. One way to avoid this issue is by storing and packaging your food in inert materials, such as glass, that do not react with or affect the flavour of your food.
Glass is inert, which means it does not chemically react with other substances. This is especially important when it comes to food storage and packaging because it ensures that the flavour and integrity of the food remain unchanged. Glass does not leach chemicals or impart any unwanted tastes or smells into your food, even over extended periods. This is one of the main reasons why many people prefer to store their food in glass containers.
The inert nature of glass also makes it a safe option for storing and packaging a wide variety of foods, including acidic or reactive foods like tomatoes, citrus fruits, and fermented items. These types of foods can sometimes react with other materials, such as certain metals or plastics, leading to a change in flavour or even the potential leaching of harmful chemicals. Glass, however, remains completely inert and will keep your food safe and tasting exactly as it should.
Additionally, glass is non-porous, so it won't absorb flavours or odours from the food stored within it. This means that your glass containers can be reused for different types of food without transferring any residual flavours. This is particularly advantageous for those who like to cook a variety of dishes with distinct flavours and aromas, as glass storage ensures that each dish remains true to its intended taste profile.
In summary, glass is an ideal material for food storage and packaging due to its inert and non-porous nature. It ensures that your food remains safe, retains its original flavour, and is free from any unwanted tastes or smells that could detract from your culinary creations or negatively impact the quality of your ingredients. So, the next time you're considering storing or packaging your food, remember that glass is a reliable and inert option that will keep your culinary creations tasting their best.
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Frequently asked questions
Plastic containers are convenient for storing food, but they can also absorb the scents of the food stored in them. Common plastic is not 100% impenetrable to liquids and gases, so food odours can get trapped in the plastic, especially if the containers are stored with the lids on or put away wet.
To get rid of the plastic smell from your food, try transferring it to a glass or ceramic container. You can also try neutralising the smell from your plastic container using household ingredients such as baking soda, vinegar, salt, coffee grounds, vanilla extract, or charcoal.
The water in clear drinks bottles made of PET (polyethylene terephthalate) can become contaminated with some of the starting products used to make the plastic of the bottle. This is more likely to occur if the bottle is left in the sun or in a hot car for a long time.
The smell of chemicals could be due to volatile compounds (quick-to-evaporate chemicals that create smells and flavours) being released from the plastic packaging. This can happen due to exposure to light, oxygen, time, and heat. However, it is important to note that while unpleasant, these compounds are usually harmless.
