Kate Di Prima, accredited practicing dietitian and spokeswoman for the Dietitians Association of Australia, told The Huffington Post Australia, "The main thing that comes from juice is vitamin C and it is sensitive to both heat and light. However, there is currently no published research to support claims that cold-pressed juices contain higher levels of vitamins or antioxidants. It is true that some vitamins degrade when exposed to air, heat or light. Some claim that, since cold-pressed juices minimize the exposure to heat and air, they’re able to hold onto more vitamins and minerals that are naturally present in the whole fruit. How much of a difference does this make in the nutritional content? Any type of juice, regardless of how it was made (centrifugal or masticating juicer), can be pasteurized either way. This is another form of pasteurization, known as high-pressure processing, and allows companies to sell juice that will last 4-5 weeks. Therefore, commercially sold juice is bottled and submerged in water under high pressure to inactivate pathogens. This process differs from other methods because the ingredients are not exposed to heat or air.īut fresh and cold-pressed juices will only last 3-4 days before spoiling, and can pose a food safety risk. What about cold-pressed juice? These juicers use hydraulic presses to press fruits and vegetables through fine mesh to extract the liquid. Because the metal blades heat up the juice, and the process exposes ingredients to air, they claim that it creates a less nutritious final product. These juices can also be pasteurized and sold commercially.Ĭritics claim that both of these processes could alter or destroy nutrients naturally found in the fruit, which never make it to the bottle. ![]() ![]() The blades tear apart the produce and use centrifugal force to push the fruit/vegetable through a filter, which separates the juice from the flesh (pulp). This is called pasteurization, and the FDA has guidelines regarding required temperature and time depending on the type of ingredient used.įresh juices, like those found at a made-to-order juice bar, are prepared by putting fresh produce into a juicer with fast-spinning metal blades. In traditional juicing methods (like the standard orange juice you buy at a grocery store), the liquid is heated to kill any potentially harmful bacteria or other microorganisms and prevent consumers from getting sick. But, how do we choose the healthiest kind? Let’s look at the different types. But, eating pounds and pounds of fresh produce isn’t always practical during a busy day. We all know that eating whole fruits and vegetables is optimal for health.
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