Maya Ellison
Plastic containers are convenient for storing food and other items. However, they can become a breeding ground for mould if not properly maintained. Mould can cause health issues and damage to the containers themselves. To prevent mould growth, it is crucial to keep containers clean and dry, ensure airtight seals, and consider using desiccants or natural solutions like vinegar to inhibit mould spores. Regular cleaning with bleach or hot soapy water can also help, but if mould penetrates the plastic, disposal may be necessary.
| Characteristics | Values |
|---|---|
| Plastic containers prevent mold | Plastic containers can get moldy, but they can be cleaned with hot soapy water, bleach, or vinegar. Heavy-duty plastic storage bins with desiccant packs can be used in humid environments. |
| Airtight containers | Airtight containers can prevent mold by preventing the intrusion of moisture. However, condensation can form if temperatures vary, allowing mold to grow. |
| Insulation | Containers can be insulated with wool or cotton to decrease the chances of mold. |
| Vapor barriers | Plastic vapor barriers can be installed to prevent water from getting inside and causing mold. |
| Clean and dry items | Items should be thoroughly cleaned and dried before being stored to prevent mold. |
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What You'll Learn
Plastic containers are not immune to mould
To prevent mould from growing in plastic containers, it is important to ensure that the containers are clean and dry before storing any items in them. This is because dirt can leave a permanent coating on the containers if left for too long. Additionally, moisture can lead to the growth of mould. Therefore, it is recommended to use a desiccant packet in the containers to absorb moisture.
To further prevent mould, it is suggested to use an internal lid to create an airtight seal. This can be done by stretching cling film over the box without any creases and securing it with an elastic band before placing the external lid on top. Another method is to use blanket insulation by taping or gluing wool or cotton, such as old blankets, to the inside of the container.
If mould does grow in a plastic container, it may be possible to clean and save the container. One method is to wash the container with hot soapy water, then soak it in a solution of hot water, soap, and bleach for 15-20 minutes. Then, wash the container again before the water cools. Finally, place the container in the dishwasher. Alternatively, a vinegar and soap soak can be used instead of bleach.
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Additives in plastic make it susceptible to mould
Plastic is a widely used material, with applications ranging from food storage containers to cutting boards and toys. However, one common issue with plastic is the growth of mould. While it is possible to clean mould off plastic surfaces using solutions like bleach or vinegar, mould can be challenging to remove completely as it can get embedded in the material itself, especially in porous plastics.
Plastics contain various additives that provide desired features such as durability, colour, and softness. These additives include plasticizers, cellulose, lubricants, stabilizers, and colourants. Unfortunately, these additives can also make plastic susceptible to mould growth. Mould can easily break down these additives, and the acids produced during mould growth further break down the plastic resin, providing a more usable food source for the mould.
The presence of food particles, moisture, and suitable temperatures also enhance mould growth on plastic surfaces. Food residues, in particular, provide a food source for mould, and moisture allows mould to thrive. This is why it is crucial to clean and dry plastic items thoroughly before storing them, especially those that come into contact with food, such as cutting boards and food storage containers.
To prevent mould growth on plastic, it is essential to choose the right type of plastic and ensure proper cleaning and storage practices. While some plastics, like PVC, are porous and more susceptible to mould, others, like ABS plastic, are non-porous and less prone to mould growth. Using airtight containers and sealing them properly can help minimize air and moisture exchange, creating an unfavourable environment for mould.
Additionally, using moisture barriers, such as plastic sheeting or silica pellets, can help keep moisture away from stored items. Keeping items in a suitable climate without extreme temperatures can also inhibit mould growth. By understanding the role of additives in plastic and following proper maintenance and storage practices, it is possible to reduce the susceptibility of plastic to mould growth and maintain the integrity of plastic items.
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Plastic containers should be cleaned regularly
Plastic containers are susceptible to mould growth, especially if they are stored in cold environments or come into contact with water. To prevent mould from growing in your plastic containers, it is important to clean them regularly and ensure they are thoroughly dried before storing. Here are some detailed steps to follow:
Firstly, inspect your plastic containers regularly for any signs of mould. Look out for discolouration, black spots, or fuzzy growths, especially in the crevices and lids of the containers. If you notice any mould, it's important to act quickly to prevent it from spreading.
When cleaning your plastic containers, always use hot water and a mild detergent or dish soap. Soak the containers in this solution for several minutes to loosen any food residue or grime. Then, use a soft cloth or sponge to scrub away any remaining dirt or mould. Rinse the containers thoroughly with warm water to remove any soap residue.
To disinfect and sanitise your plastic containers, you can use a diluted bleach solution. Mix one part bleach with ten parts warm water, and fully submerge the containers in this solution for 15-20 minutes. You can also add a small amount of vinegar to the solution if desired. After soaking, be sure to rinse the containers well and dry them thoroughly before storing.
For more challenging mould cases, you may need to soak the containers overnight in a stronger bleach solution. Use rubber gloves and a face mask to protect yourself from the bleach fumes. After soaking, scrub the containers with a soft brush or sponge, then rinse and dry them thoroughly. You can also run them through the dishwasher to ensure they are completely clean.
To prevent mould from returning, ensure your plastic containers are completely dry before stacking or storing them. You can also use internal lids or cling film to create an airtight seal, which helps keep moisture out. Additionally, consider insulating your containers with wool or cotton if you plan to store them in cold environments, as this can reduce the chances of mould growth.
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Bleach and vinegar are effective mould-killing solutions
While it is a common belief that bleach and vinegar are effective mould-killing solutions, they are not. They are not effective enough for positive long-term outcomes. While vinegar is a natural and non-toxic remedy that can penetrate deep inside mould areas and prevent their growth, it can cause discolouration if used on tiles. Bleach, on the other hand, is toxic to health and can only be used if there is a small amount of mould in the house.
There are several other ways to prevent mould in storage containers. Firstly, ensure your items are completely dry before storing them, and consider placing a moisture barrier like plastic sheeting at the bottom of the container. Using airtight containers and proper sealing also helps prevent moisture infiltration. Airtight containers can help prevent mould by minimising air and moisture exchange between the container and its surroundings. You can also use tape or glue and stick down wool or cotton to the inside of your container—this will decrease the chances of mould, and the padding will also provide an extra layer of protection.
Additionally, silica pellets are one of the most effective drying methods. To prevent your container from touching the floor and absorbing water, place it on raised wooden pallets with a sheet of plastic or invest in some shelving panels for your garage. Leave room between stacks of boxes and don't push them directly against a wall. You should also avoid placing them on a concrete floor as moisture from porous materials can leak through.
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Prevent mould by insulating containers and controlling humidity
Insulating containers and controlling humidity are crucial steps in preventing mould growth. Mould thrives in damp environments, so maintaining a dry space is essential.
Firstly, when storing items, it is important to choose the right container. Opt for plastic or metal containers with tight-fitting lids to create an effective barrier against moisture. Plastic containers with airtight lids can be used to store items and prevent mould growth. Avoid cardboard boxes, as they absorb moisture and can become a breeding ground for mould. For items like clothing, use vacuum-sealed bags, which provide an airtight solution and an additional layer of protection against moisture.
Secondly, ensure your storage area is well-ventilated and control the humidity. Indoor relative humidity should be kept below 60%, ideally between 30% and 50%. Use exhaust fans or open windows to improve airflow, especially when cooking or after showering, as these activities increase indoor humidity. You can also use moisture-absorbing materials such as silica gel packets or activated charcoal to maintain a dry environment.
Thirdly, insulate your containers and the storage area. If you are placing your container in a cold environment, insulate it with wool or cotton. For larger storage areas, ensure ducts are properly sealed and insulated to prevent condensation and moisture intrusion. Cover cold surfaces like water pipes with insulation to prevent condensation.
Finally, ensure items are clean and dry before storing. Any leaks or spills should be addressed within 24-48 hours to prevent mould growth. Regularly rotate stored items to ensure all surfaces are exposed to airflow and reduce the chances of mould developing.
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Frequently asked questions
Plastic containers can provide some protection against mold, as mold generally can't break down plastic easily. However, plastics contain additives that mold can break down, so it can grow under the right conditions.
Mold breaks down the additives in plastic, such as plasticizers, cellulose, lubricants, stabilizers, and colorants. The acids produced as by-products of mold growth further break down the plastic resin, providing a more usable food source for the mold.
To prevent mold growth on plastic containers, it is important to regularly clean them and ensure they are thoroughly dried before storage. You can also use a desiccant or moisture absorber to reduce moisture levels. Additionally, you can disinfect the containers using diluted bleach or white vinegar.
Mold growth on plastic containers may appear as little black specks or spots, usually in areas with cracks or scratches. It is important to clean and disinfect the containers as soon as mold is detected to prevent further growth.
