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Do Core Bars Have to Be Refrigerated? The Definitive Guide

4 min read

According to the Core Foods website, their bars are stored in the fridge because they don't use artificial preservatives. This immediately brings up a common question for new customers: do core bars have to be refrigerated constantly, or can they handle life on the go?

Quick Summary

Core bars must be refrigerated to maintain the viability of live probiotics and the freshness of their real, whole-food ingredients, as they contain no artificial preservatives. They can safely be stored outside the fridge for up to one week, offering convenience for travel.

Key Points

  • Refrigeration is required: Core bars contain live probiotics and are made without artificial preservatives, so cold storage is necessary for long-term freshness and potency.

  • OK on the go for one week: For convenience, Core bars are safe to be stored outside of the refrigerator at room temperature for up to seven days.

  • Quality degrades over time: After one week out of the fridge, the bar's texture will become hard or oily and its probiotic benefits will diminish, though it remains safe to eat for a short time.

  • Freezing extends shelf life: For storage beyond the 'best by' date, you can freeze Core bars without compromising their quality when thawed.

  • Refrigeration protects ingredients: Cold temperatures prevent the natural oils from separating and inhibit bacterial growth in the bar's real, whole-food ingredients.

In This Article

The Science Behind Core Bars and Refrigeration

The short answer is yes, Core bars should be refrigerated, but they do have a grace period for convenience. The primary reasons stem from their dedication to using only real, wholesome ingredients without resorting to artificial preservatives. This choice results in a superior, more nutritious bar, but it also means it is naturally perishable.

  • Live Probiotics: Many Core bars contain live probiotics, which are beneficial bacteria crucial for gut health. To ensure these cultures remain active and potent, they must be kept in a cold environment. Warmer temperatures can kill the probiotics, rendering them useless.
  • Real, Whole-Food Ingredients: Unlike many shelf-stable bars that rely on heavily processed components, Core bars are made with real, minimally processed ingredients like organic whole grain oats, nuts, and fruits. These ingredients are more susceptible to spoilage and require refrigeration to maintain their quality and prevent bacterial growth.
  • Absence of Artificial Preservatives: The brand prides itself on its clean ingredient list, which means no artificial additives or preservatives are used to extend shelf life. This is a key reason why cold storage is not optional for long-term freshness.
  • Optimal Texture and Flavor: Refrigeration is also necessary to maintain the bar's desired consistency. For instance, the use of nut butters means that at room temperature, the oils can separate and the bar can become soft or oily. Keeping it chilled helps the bar maintain its firm, delicious, cookie-dough-like texture.

The 'On-the-Go' Exception

While they are primarily found in the refrigerated section of stores, Core bars are designed with your busy lifestyle in mind. The company explicitly states that their bars are good on the go at room temperature for up to one week. This is a game-changer for those who need a healthy snack during their daily commute, on a weekend trip, or at work. You can safely pack one in your bag without worrying about it spoiling immediately.

How to Handle Your Core Bar on the Go

  • For Short Trips: Simply grab a bar from the fridge and toss it in your lunch bag or backpack. It will be perfectly fine for several hours.
  • For Longer Excursions (Up to 1 Week): When traveling for a few days, pack the bars as you would any other snack. While the texture may soften slightly, the bar will remain safe and nutritious to eat for up to seven days.
  • For Maximum Coolness: If you prefer a chilled texture, especially during warmer weather, consider using an insulated lunch box with an ice pack. This keeps the bar at its optimal temperature, preserving its firmness and coolness for a refreshing snack.

What Happens if You Don't Refrigerate Core Bars?

If you leave a Core bar out for longer than the recommended one-week period, it won't necessarily become a health hazard overnight, but its quality will significantly degrade.

  • Loss of Probiotic Potency: The live cultures that support your gut health will start to die off, meaning you'll lose the intended health benefits from the probiotics.
  • Texture and Taste Changes: The natural oils from the nuts will begin to separate, and the bar can become dry, hard, and crumbly. The overall taste will also not be as fresh or vibrant as a refrigerated bar.
  • Increased Risk of Spoilage: While short-term, a few days past the one-week mark might be fine, prolonged exposure to heat and air can eventually lead to spoilage and make the bar unsafe to eat.

Comparison Table: Refrigerated vs. Shelf-Stable Bars

Feature Core Bars (Refrigerated) Typical Shelf-Stable Bar
Preservatives None (uses cold storage for freshness) Often uses artificial preservatives
Probiotic Content Contains live, active probiotics for immunity and gut health Rarely contains live probiotics; may have prebiotics
Ingredients Made with real, whole-food ingredients like organic oats, fruits, and nuts Often made with heavily processed ingredients and isolates
Ideal Storage Refrigerated for maximum freshness and efficacy Pantry or cabinet at room temperature
On-the-Go Life Safe for up to one week at room temperature Designed to last for months at room temperature

Storing Your Core Bars for Maximum Freshness

To get the most out of your purchase and ensure you're consuming the freshest, most effective bar possible, follow these simple storage guidelines:

  • Fridge: This is the recommended long-term storage method. Keep the bars in their original packaging in the refrigerator until you are ready to eat them.
  • Freezer: For even longer-term storage beyond the printed 'best by' date, you can place Core bars in the freezer. This extends their shelf life significantly and won't affect their texture after thawing.
  • Thawing: When taking a bar from the freezer, allow it to thaw at room temperature for a short time to return to its optimal consistency. Some people even enjoy them frozen for a cold, refreshing treat.

Conclusion

Ultimately, the necessity of refrigerating Core bars is a direct consequence of their commitment to using clean, real, and live ingredients. The need for cold storage is a positive indicator of the bar's quality and the lack of artificial additives. While the one-week window for on-the-go consumption provides excellent flexibility, remembering to store them in the fridge ensures you get the full nutritional benefits and the best taste and texture. Embracing the refrigerated snack bar is a small habit change for a big win in healthier, cleaner eating.

Frequently Asked Questions

Core bars can be kept out of the refrigerator at room temperature for up to one week. This is ideal for commutes, packing in lunch boxes, or short trips.

If a Core bar has been unrefrigerated for longer than one week, it may lose its optimal taste and texture due to oil separation and hardening, but it is unlikely to cause sickness immediately. However, the beneficial probiotics will no longer be active.

Core bars require refrigeration because they contain live, active probiotics and are made with real, perishable whole-food ingredients without the use of artificial preservatives.

Yes, Core bars can be frozen for longer-term storage. Freezing is a great way to preserve them if you won't eat them by the 'best by' date. They can be thawed at room temperature before eating.

The 'best by' date is based on the assumption of proper refrigerated storage. If the bar is kept out of the fridge for a full week, the quality may not be optimal for the entire duration up to the printed date. Always refrigerate for best results.

No, most mass-market protein bars are formulated with preservatives and processed ingredients to be shelf-stable. Only certain brands, like Core and Perfect Bar, require or recommend refrigeration due to their use of fresher, more natural ingredients and active probiotics.

A Core bar that has spoiled might have an unusual, sour odor, visible mold, or a significantly off-putting flavor. While texture changes like hardening or oiliness are expected after prolonged time out of the fridge, any signs of mold or a strong, unpleasant smell are clear indicators that it should be discarded.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.