Juice is supposed to be a healthy drink. But when manufacturers produce these bottled juices, many of them cut corners in the name of profit. They treat the juice with heat to extend its shelf life — often for years once bottled. This process is known as pasteurization.
But fruits weren’t meant to last for years – there’s nothing natural about that timeline. So is there another option that’s healthier & safer for you to drink? There sure is. At Raw Juicery, all of our juices are unpasteurized. Instead, we cold press all of our juices and treat them with High Pressure Processing (HPP), eliminating the need for thermal pasteurization.
But how do the two compare: pasteurized juice vs. unpasteurized juice? We’re going to look at the fundamental differences between the two, their impact on flavor, nutritional preservation, safety, and shelf life. From there, you’ll be able to determine which is the healthier & safer option for you.
What is Unpasteurized Juice?
Unpasteurized juice is juice that has not undergone the process of pasteurization. It’s more commonly known as “raw juice,” hence our Raw Juicery name. And instead of subjecting fresh, organic fruits and vegetables to high heat treatment, we opt to cold-press them instead.
There are several methods to produce unpasteurized juice, some of which include hydraulic pressing or grinding. We use HPP, which helps retain the natural enzymes, vitamins, minerals, and flavors present in the fruits and vegetables. Compared to pasteurized juice, the end product is much closer to its raw, natural state.
The result? Unpasteurized juice is noticeably fresher in flavor and more vibrant in color. Without heat treatment, the natural taste, aroma, and nutritional profile stay intact — including heat-sensitive nutrients like Vitamin C and Vitamins B1 & B5 that pasteurization destroys.
However, at Raw Juicery, this is a non-issue. After bottling the juices, they’re treated with intense pressure in a cold environment (HPP), effectively vaporizing potential pathogens that could make you sick. The beauty of HPP is that the cold pressure leaves the delicate molecular structure of the fruits and vegetables intact, only destroying the bacteria.
What is Pasteurized Juice?
Pasteurized juice is juice that's been heated to kill bacteria — typically to 160-185°F for a few seconds to a few minutes, then rapidly cooled.
Most people have never thought about how their juice is made. The primary goal of pasteurization is food safety — killing bacteria like E. coli and Salmonella. But the way it does that comes with serious trade-offs.
This heat treatment reduces the bacterial load — but it also reduces everything else.
And while it may kill bacteria, it also kills the nutritional value of the raw produce itself.
By pasteurizing juice, companies are able to 1) reduce their operating costs and 2) extend the shelf life. Pasteurized juice can be stored for years depending on the specific product and packaging — far beyond what any fresh juice was meant to last.
Because of the intense heat, the flavor, color, and even scent of unpasteurized juice are not at all similar to the raw version, nor is the nutritional composition. Manufacturers add artificial sugars and sweeteners to try to compensate, but the original flavor profile of raw juice simply cannot be recreated. On top of that, the heat kills many of the vitamins, minerals, and enzymes that make fresh produce so valuable to your health.
Despite this, pasteurized juice is still largely the staple at grocery stores and among many juice cleanse brands. Why? The answer is quite simple really – it’s cheaper to produce.
Pasteurized vs. Unpasteurized Juices: How Do They Compare?
Let’s break down the key differences side by side.
Flavor & Quality
One of the key aspects that sets pasteurized and unpasteurized juices apart is their flavor profile. Unpasteurized juices are fresher, more vibrant, and more naturally-tasting than their pasteurized counterparts. The absence of heat treatment helps preserve the natural flavors and aromas of the fruits and vegetables, resulting in a more authentic and enjoyable drinking experience. No amount of artificial sweeteners or flavoring can replicate the taste and smell of raw juice — once heat destroys those natural flavors, they're gone for good.
Nutritional Preservation
This is where the difference is most significant. Heat destroys enzymes, degrades vitamins like C, B1, and B5, and strips out the nutrients that make juice valuable in the first place. Cold-pressed, HPP-treated juice retains those heat-sensitive compounds — you're getting what the fruits and vegetables actually contain, not what survived a 180°F oven.
Safety
Here's the one thing pasteurization gets right: it kills harmful bacteria. But it's not the only way to do it. HPP achieves the same result — eliminating pathogens like E. coli and Salmonella — without heat. You get the safety without losing the nutrition. That's the entire point.
Shelf Life
Shelf life is an important consideration for both consumers and juice companies. Unpasteurized juices, due to their raw and untreated nature, have a shorter shelf life compared to pasteurized juices. However, our raw, unpasteurized juices have a shelf life of 30-80 days as long as they’re kept refrigerated. The low temperature and HPP treatment keep bacteria at bay.
With little to no bacteria remaining after heat treatment, pasteurized juices can last for years on store shelves. That extended shelf life comes at the cost of flavor, nutrients, and everything that made the juice worth drinking in the first place.
The Bottom Line
Pasteurization was designed to make juice safer — but it does so at the expense of nearly everything that makes juice worth drinking. The nutrients, the flavor, the enzymes — all diminished by heat.
At Raw Juicery, we take a different approach. Our juices are cold-pressed and treated with HPP — giving you the safety of pasteurization without sacrificing what matters. No heat, no artificial sweeteners, no compromise.
If you care about what goes into your body, the choice is clear. Explore the benefits of a juice cleanse and taste the difference for yourself.
FAQ
Is unpasteurized juice safe to drink?
Unpasteurized juice that has been treated with HPP (High Pressure Processing) is safe for most healthy adults. HPP eliminates harmful bacteria like E. coli and Salmonella using extreme pressure — up to 87,000 PSI — without heat. At Raw Juicery, all juices are HPP-treated after cold-pressing, providing the safety of pasteurization while preserving nutrients and enzymes intact.
What is the difference between pasteurized and unpasteurized juice?
Pasteurized juice is heated to 160–185°F to kill bacteria, which also destroys enzymes, degrades vitamins (especially C, B1, B5), and eliminates natural flavor. Unpasteurized juice skips heat treatment, retaining the nutritional profile of raw fruits and vegetables. HPP-treated unpasteurized juice achieves bacterial safety through pressure instead of heat.
Why does pasteurized juice last so long?
Pasteurization kills the bacteria and enzymes that cause spoilage — but those same enzymes are what make juice nutritionally valuable. Pasteurized juice can last years on shelves because there's very little biologically active material left to degrade. Unpasteurized HPP juice lasts 30–80 days refrigerated — shorter, but that's because it's still a living product.
Does pasteurization destroy vitamins in juice?
Yes. Heat-sensitive vitamins including vitamin C, B1, and B5 are significantly degraded during pasteurization at 160–185°F. A 2017 study in the Journal of Food Science and Technology found that thermal pasteurization reduced vitamin C content in fruit juices by 26–67% depending on temperature and duration [1]. Enzymes are even more vulnerable — most are denatured above 118°F.
What is HPP juice?
HPP (High Pressure Processing) is a food safety technology that subjects bottled juice to up to 87,000 pounds per square inch of cold-water pressure. This destroys harmful bacteria without generating heat, preserving the vitamins, enzymes, and natural flavor that heat pasteurization destroys. Both Raw Juicery and several other premium juice brands use HPP as an alternative to thermal pasteurization.
Is cold-pressed juice the same as unpasteurized?
Not necessarily. "Cold-pressed" describes the extraction method (hydraulic pressure, no heat). "Unpasteurized" means the juice hasn't been heat-treated after extraction. A juice can be cold-pressed and then pasteurized — which defeats much of the nutritional advantage. Look for cold-pressed AND unpasteurized (or HPP-treated) for the full benefit.
Which is healthier: pasteurized or unpasteurized juice?
Unpasteurized juice retains more vitamins, enzymes, and antioxidants because it hasn't been exposed to heat. When treated with HPP for safety, unpasteurized juice offers the best of both worlds — full nutritional content with pathogen elimination. Pasteurized juice is safer without HPP treatment but contains significantly fewer heat-sensitive nutrients.
Can you taste the difference between pasteurized and unpasteurized juice?
Yes — the difference is immediately noticeable. Unpasteurized cold-pressed juice has more vivid color, brighter flavor, and a freshness that pasteurized juice cannot replicate. Heat treatment fundamentally alters the flavor compounds in juice. No amount of added sweetener or flavoring can recreate the taste profile of raw, unpasteurized fruit and vegetable juice.
References
[1] Abbasi, N.A. & Akhtar, S. (2017). "Effect of pasteurization on nutritional quality of juice." Journal of Food Science and Technology. Review of vitamin degradation during thermal processing of fruit juices.
[2] FDA. (2024). "Juice HACCP and the FDA Food Safety Modernization Act." U.S. Food and Drug Administration guidance on juice safety regulations and processing requirements.