A Field in Which to Frolic**


Juicing and Storing Fresh Juice
March 6, 2013, 12:05 pm
Filed under: Health & Wellness | Tags: , ,

How to Store Fresh Juice
During a Juice Fast

How does storage affect fresh juice?I decided to look further into the debate on storing juices and what effect this has on the nutritional value of your juice. As I mentioned in a previous post, some people say you must drink it immediately, in like 15 minutes or less, or your juice suddenly loses it’s nutrients. This is a serious misconception, and it keeps some people from even considering making juicing a part of their lives. I found a study on the longevity of nutrients in stored, fresh juice, and want to share some of those findings here.

The purpose of the study was to answer several questions, including the following:

  • How much “life” is in the juice after extraction?
  • Does one type of juicer deactivate more enzyme activity than another type?
  • Do certain juicers preserve the enzyme activity longer?
  • Is it better to refrigerate or freeze juice overnight?

The study tested enzyme levels in carrot juice, using a variety of different juicers. Measuring enzyme activity is a good way to determine how much “life” remains in the juice, because it takes into consideration “the destructive effects of oxygen, heat, electromagnetic forces, and other factors.” This study focused on the enzymes amylase and peroxidase. Amylase aids in digestion by breaking down starch into sugar, and is present in saliva. Peroxidase reduces hydrogen peroxide to water, this protecting our bodies from oxidative damage.

Retaining Nutrient Content in Fresh Juice

The study states, “in this particular test neither enzyme (amylase & peroxidase) was degraded to a large extent after four days (of storage)” Additionally, freezing the juice preserved the peroxidase better, while refrigeration was better for preserving amylase. The biggest take-away regarding which juicer to use and whether to store it was the introduction of air to the juice. Juicers that produce a lot of foam are the juicers that are introducing the most air to the juice. And as far as storage goes, “the presence or absence of oxygen in the bottle may be the most critical factor. Without oxygen, nutrients are quite stable.”

The study showed that a press-type extractor is the the “best” way to prepare juice, i.e. this method retains the most nutrients. Next would be a twin-gear juicer, then a  masticating juicer, and last would be a centrifugal juicer. In fact, the enzyme activity in the press extractor was 50% higher than that of a centrifugal juicer. Not only that, but you also get more juice from a press than from any other kind. What does this mean to me? I will absolutely be investing in a more expensive juicer as soon as I possibly can!

So there you have it. A study that shows that stored juice does not equal “dead” juice, no matter what kind of juicer you use. In fact, if you’re concerned about the nutrient content in your juice, you should be way more concerned about the type of juicer you use, rather than how long you store your juice.

I thought this study was really interesting, and in sharing it, I hope to help clear up the confusion about storing juice. Be sure to read the whole study if you really want to get the most out of juicing.

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