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Myths about Juicers

Updated on July 13, 2011

Juicers - Debunking the Nonsense

The World Wide Web is also sometimes known as the wild Wild West, a virtual frontier land where anything goes; where anyone can grab a website and stake a claim with some internet real estate. It seems even more like a free for all when you look at some of the nonsense that is out there on the internet masquerading as fact. In our 21st century rush to become healthier, more and more of us are investing in a good quality juicer to use at home and that usually entails a bit of online research.

Specialist masticating juicers that give a better quality juice are mainly only available online and these are enjoying a real growth in popularity in our increasingly health-conscious world. Online traders have picked up on this and a lot of opportunists have jumped on the bandwagon, selling expensive juicers to an eager public. Some are reputable dealers with a real passion for the subject of juicing. It's clear also from many of the claims being made about juice extractors that some manufacturers and dealers will take full advantage of the unregulated nature of the internet and publish pseudo-scientific claims about products to help relieve you of your cash.

So if you are thinking of buying an expensive masticating juicer for optimum juice quality, it is wise to arm yourself with the following snippets of information so that you can sort out the truth from the confusing hype and make an informed choice.

The Champion Juicer

The Champion Juicer
The Champion Juicer

'Bio-Magnetic Gears in Twin Gear Juicers improve juice quality and shelf life'

Who says? Unsurprisingly, this unproven claim originates from the manufacturers of twin gear juicers. So-called bio magnets are the subject of much dispute and controversy in their therapeutic effect on human beings amongst the scientific community. Search online and you'll find anti-quackery websites get quite exercised by this unproven 'science'.

Using 'Bio-Magnetic Technology' in the parts of a juicer is potentially even more misleading when you understand the real motivation for manufacturers putting magnets into the gears in the first place. Magnets were not introduced to improve the quality of juice at all.

Twin gear juicer gears are precisely machined and very close-fitting. Magnets with a mutually repulsive force were originally included to stop the gears sticking and clashing together. It’s a shame that twin gear juicers are tainted with all this unproven bio magnetic stuff because they really are the ultimate juicing machines. For the juicing and raw food enthusiast twin gear juicers like the Green Star juicer range from Tribest and the Green Power Kempo juicer are a couple of great examples.  

'The lower the speed of the juicer - the better the quality of the juice'

This is a half-truth. It is true that masticating juicers produce a better quality of juice than a centrifugal juicer. It's also true that masticating juicers operate at a lower speed. Unfortunately it doesn't logically follow from this that the lower the speed the better the juice. In fact juicer speeds are determined by engineering design constraints more than they are controlled by any urge to discover the ultimate in juice quality.

Let's keep it simple by sticking to the facts. The quality of juice is determined mainly by the degree to which the plant material is broken down in the juicer. The quantity of juice is determined by the pressure or force used to extract it. The fact that masticating juicers are low speed is a result of their juicing action being more suited to a low speed motor.

A centrifugal juicer is fast in order to generate enough centrifugal force to separate the juice. Juice quality depends on the thorough breakdown of the plant material and this is determined by the juicing process, not the juicing speed. The reason you can't buy a high speed twin gear masticating juicer is that it would be impossible to manufacture these at an affordable price. The fastest masticating juicer is the Champion juicer which runs 14 times as fast as a twin gear machine but it still gives a highly nutritious juice, so don't worry too much about speed.

'Centrifugal juicers destroy enzymes' - NO THEY DO NOT!!

This is a popular misconception yet there is absolutely no scientific evidence to prove this claim. There is however scientific evidence that the juice from a centrifugal juicer has good enzyme activity in research published by Michael Donaldson PhD. Claims are made that the high speeds of centrifugal juicers destroy enzymes with the heat caused by friction.

Firstly, heat caused by friction depends on a lot more than just speed and secondly to destroy the enzymes in juice it would have to be heated well above blood temperature. No juicer produces juice that has been heated to this level.

The juice from a centrifugal juicer may be slightly less abundant in nutrients than that from a masticating juicer but it is still excellent quality, so don't be scared into spending a lot of money by this piece of pseudo-science. A great example of an easy to use centrifugal whole fruit juicer is the L'Equip XL Juicer. Machines like this can take apples whole and are very convenient in a busy home – and they DON’T destroy enzymes.

'Up To 20% more Juice'

'Up to three times more nutritious', 'Up to 30% less pulp'....terms like these are meaningless. In fact in the world of high quality juice extractors you can disregard most statistics and even consider ignoring all juicer comparisons. Properly conducted juicer comparison tests must be done with all models simultaneously, with a uniform batch of produce in strictly controlled conditions.

Truly independent tests of this nature are not easy to find. Some businesses have a fair-minded stab at juicer testing but there are credibility issues with any juicer review when there are so many ridiculous claims being made about particular models on charts and tables across the web.

The amount of juice you get from the top performers doesn't vary massively in spite of the claims of some manufacturers. Some give a little more or a little less pulp in the juice, a little more or less foam on top of the juice. Different models have different strengths, features and capabilities. If someone is telling you that a particular model beats all the rest at everything, they are probably lying.

In spite of all the hyperbole there are plenty of reputable sellers who will help you with your research. Buyers in the UK will find friendly, honest product advice and information available at



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    • profile image


      4 years ago

      If there is so much discussion on this subject, why doesn't anybody just does the experiment with reliable measurements?

    • profile image

      Rick Spyder 

      4 years ago

      All these comments are on the money. I' ve used spinners and munchers and the munchers rule. Also just tried a Norwalk for the first time. Takes longer but the juice is absolutely fantastic. But overall the masticaters are great. Watched a documentary called Fat Sick and Nearly Dead and passed it around to friends and family...My brother lost 45 pounds in 30 days. This Doc. will inspire thousands who are sick of stupid doctors and a dis-functional medical system. Your juicer is your doctor and your health insurance. Keep juicing friends

    • profile image

      juicy juice 

      4 years ago

      you offer no data to support your claims

      where is you data to support your claims

    • profile image


      4 years ago

      It's horrible that you start with saying that much information on the web is not true, because that leads everyone to believe that what they are about to read now must be the real truth. But it's not at all! People.... do a search for "The Gerson Therapy" on youtube, Netflix, or the internet. This facility has been healing people from chronic illnesses using nutrition. They serve juice to their patients and encourage all juicing to be done with a masticating juicer, NOT a centrifugal juicer, because it destroys the enzymes. You're doing a real disservice to people by leaving this information up!

    • profile image


      5 years ago

      I notice you have non of your information sited. So what you're saying can be a bunch of BS just like the juicing companies who are trying to sell their product. I find your article very misleading since you did NOT site any of your information as to where you obtained it.

    • profile image


      6 years ago

      Actually, centrifugal juicers do destroy enzymes. These type of juicers spin at a very high rate, 3600 RPM. Because of this to much oxygen is introduced and the excess oxygen destroys enzymes. I did find specific study on this, but of course I lost the link when my hard drive died and I had to replace it and didn't have a back up. DOH! Heat destroys enzymes, but they don't start breaking down until the temp reaches 104*F and juicers do not produce enough heat to do that.

      Also centrifugal juicers are are far less efficient than masticating. I have both a Jack LaLanne Power Juicer (centrifugal) and an Omega 8003 (masticating). I started with the PowerJuicer than upgraded to the Omega. I didn't really notice much of a difference until after I accidentally broke the screen on the Omega. So I had to go back to the PowerJuicer. I typically make 25-30 ounces at a time. Using the same ingredients I used with the Omega, I got only about 18-22 ounces. My wife was making 4 16 ounce bottles of juice with the Omega. The first juice she made with the PowerJuicer she only got 2 1/2 16 ounce bottles with the same amount of ingredients. So until the part of the Omega comes in, we are easily spending $25+ a week more by using the PowerJuicer than we did with the Omega. Also the PowerJuicer can't juice wheatgrass and is awful with leafy greens. I regularly get many full pieces of baby spinach in the pulp bin of the PowerJuicer. That never happened with the Omega.

    • profile image


      6 years ago

      Thank you for this amazing post. :-)

    • profile image

      Heather MacKessack 

      8 years ago

      Thank you so much for this post. I was unhappy about having bought a centrifugal juicer after reading that they destroy enzymes, and was contemplating on spending thousands on a juicer like the Champion. I have a Philips juicer, and am now VERY happy with it knowing that it is not destroying all the enzymens. :) Thanks a lot

    • profile image

      Apple Juice Recipes 

      8 years ago

      Just looking around for information on specific juice recipes; I think it’s important that people take a stand by taking additional time out of their busy schedule to really monitor the kinds of foods and juices they’re allowing to infiltrate their body; excellent hub by the way.


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