Storing Dry Food in Plastic Containers: A Complete Guide

When it comes to storing dry food, using the right containers is crucial. Plastic containers are a popular choice for their convenience and affordability. However, not all plastic containers are safe for storing food. In this comprehensive guide, we will explore the different types of plastic containers suitable for dry food storage, how to properly store dry food, and the ideal conditions for maintaining food freshness. Whether you're stockpiling for emergencies or simply organizing your pantry, this guide will help you make informed decisions about storing your dry food in plastic containers.

Resin Identification Codes

Plastic containers are labeled with resin identification codes, usually found on the bottom. These codes indicate the type of plastic used to manufacture the container. It's essential to understand these codes to ensure the safety of food storage. Here are some common resin identification codes:

• #1: Polyethylene Terephthalate (PET or PETE)
• #2: High-Density Polyethylene (HDPE)
• #4: Low-Density Polyethylene (LDPE)
• #5: Polypropylene (PP)
• #3, #6, and #7: Plastic Containers to Avoid

Safe Plastic Containers for Food Storage

Among the different resin identification codes, certain plastics are considered safe for storing food. These plastics have been approved by the FDA for food contact. Let's explore the characteristics of each safe plastic container:

Polyethylene Terephthalate (PET or PETE)

Plastic containers with a #1 code are made of Polyethylene Terephthalate. This type of plastic is commonly used for water, soda, and juice bottles, as well as peanut butter containers. PET containers are transparent, strong, and suitable for long-term dry food storage. Ensure these containers have been previously used for food storage, and avoid using them for high-heat environments.

High-Density Polyethylene (HDPE)

Containers with a #2 code are made of High-Density Polyethylene. This plastic is commonly used for milk jugs, food storage containers, and certain hair products. HDPE containers are durable, impact-resistant, and ideal for long-term storage of dry food. While milk jugs can be reused, it's recommended to use new HDPE containers for food storage.

Low-Density Polyethylene (LDPE)

Plastic containers with a #4 code are made of Low-Density Polyethylene. LDPE is commonly used in dry cleaning bags, squeezable bottles, sandwich bags, and plastic cling wrap. Although LDPE containers are less toxic than other plastics, they are not typically used for food storage. It may be challenging to sanitize and use them effectively for storing dry food.

Polypropylene (PP)

Containers with a #5 code are made of Polypropylene. This plastic is found in yogurt containers, margarine tubs, deli meat containers, and potato chip bags. Polypropylene containers are lightweight, tough, and resistant to high temperatures. They provide an excellent moisture, grease, and chemical barrier, making them suitable for food storage.

2. Proper Storage Techniques

To ensure the longevity and safety of your dry food stored in plastic containers, it's crucial to follow proper storage techniques. Here are some key steps to consider:

Checking the Resin Identification Code

Before using any plastic container for food storage, check the resin identification code. Refer to the earlier section on safe plastic containers to determine if the container is suitable for storing dry food. Avoid using containers with codes #3, #6, and #7, as they may contain harmful chemicals.

Sanitizing Reusable Containers

If you are reusing plastic containers, it's essential to sanitize them properly. Wash the containers with hot soapy water, rinse them thoroughly, and allow them to dry completely before using them for dry food storage. Ensure there are no cracks or cloudiness in the containers, as these can compromise their integrity.

Choosing Dry Foods for Storage

Not all dry foods are suitable for long-term storage in plastic containers. Select dry foods with low moisture content, such as pasta, rolled oats, corn, dried beans, and white rice. Avoid storing dry foods with higher moisture content, like pancake mixes, nuts, and whole grain flours, as these can spoil more quickly.

Storing Dry Food in the Right Conditions

Maintaining the proper storage conditions is crucial for preserving the quality and freshness of your dry food. Store the containers in a cool and dry place, away from direct sunlight and heat sources. Ideally, the temperature should be around 60 degrees Fahrenheit or below to prevent plastic degradation and prolong food shelf life.

3. Recommended Plastic Containers for Dry Food Storage

Different plastic containers offer varying advantages for storing dry food. Let's explore the recommended options in more detail:

Polyethylene Terephthalate (PET or PETE)

Containers made of PET are transparent, lightweight, and have good oxygen barrier qualities. They are commonly used for water, soda, and juice bottles. PET containers can be reused for dry food storage if they are washed thoroughly and dried completely. However, avoid using PET containers that have been previously used for non-food items or high-fat content foods.

High-Density Polyethylene (HDPE)

HDPE containers are durable, impact-resistant, and widely used for milk jugs and food storage containers. They provide excellent protection against moisture and can be reused for dry food storage. However, it's recommended to use new HDPE containers for food storage to ensure proper sanitation.

Low-Density Polyethylene (LDPE)

LDPE is commonly used in dry cleaning bags, sandwich bags, and plastic cling wrap. While LDPE containers are less toxic than other plastics, they are not typically used for food storage due to difficulties in sanitization. It's best to choose other plastic options for storing dry food.

Polypropylene (PP)

Plastic containers made of PP are lightweight, tough, and resistant to high temperatures. They are commonly found in yogurt containers, margarine tubs, and deli meat containers. PP containers provide an excellent barrier against moisture, grease, and chemicals, making them suitable for long-term dry food storage.

4. Plastic Containers to Avoid

Certain plastic containers should be avoided when it comes to storing food due to potential health risks. Let's explore these containers in more detail:

Polyvinyl Chloride (PVC)

Containers made of PVC, identified with a #3 code, should be avoided for food storage. PVC releases dioxins during manufacturing, which are classified as human carcinogens. Additionally, PVC containers may contain phthalates, which can pose health concerns.

Polystyrene (PS)

Plastic containers with a #6 code, made of polystyrene, should be avoided for food storage. Polystyrene is commonly used in plastic cups, take-out containers, and egg cartons. During manufacturing, toxic chemicals are released, making polystyrene unsuitable for food storage.

Polycarbonate (PC)

Containers made of polycarbonate, identified with a #7 code, should be avoided for food storage. Polycarbonate containers may contain Bisphenol A (BPA), a chemical associated with potential health concerns. It's best to opt for safer plastic options when storing dry food.

5. Ideal Climate for Storing Dry Food in Plastic

Maintaining the right climate is essential for preserving the quality and longevity of dry food stored in plastic containers. Consider the following factors:

Temperature Considerations

Dry food stored in plastic containers should be kept at mild temperatures to prevent plastic degradation and maintain food freshness. Ideally, the temperature should be 60 degrees Fahrenheit or below. Avoid exposing the containers to high heat, as it can cause the plastic to melt or release chemicals into the food.

Moisture Control

Preventing moisture from entering the storage containers is crucial for maintaining the quality of dry food. Ensure that both the containers and the dry food are completely dry before sealing them. Moisture can lead to bacterial growth and spoilage, compromising the safety and taste of the food.

Oxygen Absorption

Using oxygen absorber packets can significantly enhance the shelf life of dry food in plastic containers. Oxygen can oxidize food compounds and accelerate spoilage. Oxygen absorbers remove the oxygen from the container, creating an oxygen-free environment that prolongs the freshness of the food. This also prevents pests and insects from thriving in the container.

6. Shelf Life of Dry Food in Plastic Containers

The shelf life of dry food stored in plastic containers can vary depending on various factors. Consider the following:

Factors Affecting Shelf Life

The shelf life of dry food in plastic containers depends on factors such as moisture content, packaging integrity, temperature, and oxygen exposure. Dry foods with low moisture content have a longer shelf life. Properly sealed containers, stored in cool temperatures with minimal oxygen exposure, can extend the shelf life of dry food.

Suitable Dry Foods for Long-Term Storage

Certain dry foods are well-suited for long-term storage in plastic containers. These include pasta, rolled oats, corn, dried beans, white rice, and spelt. Foods with higher moisture content, such as pancake or baking mixes, nuts, and whole grain flours, are not ideal for long-term storage in plastic containers.

7. Tips for Effective Dry Food Storage

To maximize the effectiveness of dry food storage in plastic containers, consider the following tips:

Proper Labeling and Rotation

Label each plastic container with the contents and the storage date to ensure proper rotation. Use the oldest stock first to maintain freshness. This helps prevent food waste and ensures you consume the stored dry food within its optimal shelf life.

Using Airtight Seals and Oxygen Absorbers

Ensure that the plastic containers have airtight seals to prevent moisture and oxygen from entering. Consider using oxygen absorber packets to extend the shelf life of the stored dry food. These packets remove oxygen, creating an environment that inhibits spoilage and pest infestation.

Regular Inspection and Maintenance

Periodically check the plastic containers for any damage, cracks, or signs of deterioration. Replace any compromised containers to maintain the integrity of the stored dry food. Additionally, inspect the stored dry food for any signs of spoilage, pests, or changes in texture or color.

8. Additional Considerations for Dry Food Storage

In addition to the primary factors discussed, there are a few additional considerations for effective dry food storage in plastic containers:

Pest Prevention

To prevent pests from infiltrating your stored dry food, ensure that the containers are properly sealed. Consider using airtight containers with secure lids. Additionally, storing the containers on elevated shelves can help deter pests.

Light Exposure

Excessive exposure to light can degrade the quality of dry food. Store the plastic containers in a dark or dimly lit area to minimize light exposure. This helps preserve the nutritional value and flavor of the stored dry food.

Storage Space Optimization

Efficiently utilizing the available storage space is crucial, especially when stockpiling or organizing a large quantity of dry food. Consider using stackable plastic containers or storage bins to maximize vertical space. Labeling and categorizing the containers can also aid in locating specific items easily.

9. Conclusion

Storing dry food in plastic containers can be a convenient and cost-effective solution. By understanding the different types of plastic containers suitable for food storage, following proper storage techniques, and considering the ideal storage conditions, you can ensure the longevity and safety of your dry food. Remember to choose safe plastic containers, avoid plastics that can contaminate food, and create an environment that minimizes moisture, oxygen, and light exposure. By implementing these guidelines, you can confidently store your dry food in plastic containers and enjoy long-lasting freshness.

10. Frequently Asked Questions (FAQs)

Q1: Can I reuse plastic containers for dry food storage? Yes, you can reuse plastic containers for dry food storage, provided they are properly cleaned and sanitized. Ensure that the containers are in good condition without cracks or cloudiness.

Q2: Are all plastic containers labeled as food-safe actually safe? No, not all plastic containers labeled as food-safe are suitable for long-term food storage. It's essential to check the resin identification code on the container and refer to the safe plastic containers mentioned in this guide.

Q3: How long can dry food be stored in plastic containers? The shelf life of dry food in plastic containers varies depending on factors such as moisture content, packaging integrity, temperature, and oxygen exposure. Dry foods with low moisture content can often be stored for several years.

Q4: Are plastic containers the only option for dry food storage? No, plastic containers are one option for dry food storage. Other options include glass jars, metal containers, and vacuum-sealed bags. Each option has its advantages and considerations.

Q5: Can I store dry food in plastic bags instead of containers? While plastic bags can be used for short-term storage, they are not the most ideal option for long-term storage. Plastic containers provide better protection against moisture, pests, and oxygen exposure.

Q6: How can I prevent insects from infesting my stored dry food? To prevent insect infestation, ensure that the containers are airtight and properly sealed. Using oxygen absorbers can also help create an environment that is inhospitable to pests.

Q7: Can I store dry food in the refrigerator or freezer in plastic containers? While refrigeration or freezing can extend the shelf life of some dry foods, it is not recommended to store them in plastic containers. Freezing can cause the plastic to become brittle and potentially release chemicals into the food.

Q8: Can I store spices and herbs in plastic containers? Yes, spices and herbs can be stored in plastic containers. However, ensure that the containers are airtight and kept in a cool, dark place to preserve their flavor and potency.

Q9: How often should I inspect my stored dry food and containers? It is recommended to regularly inspect your stored dry food and containers every few months. Check for any signs of spoilage, pest infestation, or container deterioration. Replace any compromised containers promptly.

Q10: Can I store dry food in plastic containers for emergency preparedness? Yes, plastic containers are commonly used for emergency food storage. Ensure that the containers are airtight, properly labeled, and stored in a cool, dark place. Consider including oxygen absorbers for extended shelf life.

Remember, proper dry food storage in plastic containers requires careful consideration of the container type, storage conditions, and food selection. By following the guidelines outlined in this guide, you can confidently store your dry food and enjoy its freshness for an extended period.

References

1. What are the benefits of using plastic containers for dry food storage?
2. How can you ensure maximum freshness with plastic containers?
3. Are there specific types of plastics best suited for dry food storage?