Can you juice an apple with a centrifuge?

Yes. But you lose the nutriional value - need 3600-6000 RPM One of the reasons that no single juicer is perfect for every situation is that fruits and vegetables have vastly different properties and the method that works for one may not work so well for the other. Fruits have soft cell walls, which require a gentle extraction method.

Apples, pears, watermelons, cantaloupes and pineapples are some of the fruits that can be juiced complete. Citrus fruit such as oranges and grapefruits have a bitter outer rind and juice produced from the whole fruit would be too bitter. Vegetables on the other hand have fibrous, "tough" cell walls requiring a more aggressive mechanical juicing action.

Vegetable juices should be consumed straight after preparation if possible as the enzyme activity in the juice diminishes quite fast. The reason that shop bought juices never oxidise is because the juice has been heated to kill all the enzymes which would cause oxidisation. These enzymes, and the benefits they bring to us, are one of the key reasons why making fresh juice with your juicer is so important.

Here is a short overview of the different juicers available on the market today. Centrifugal Juicers Most of the cheaper domestic juicers fall into this category. Generally they're not up to daily use, destroy many of the enzymes in the juice, and leave a lot of juice in with the pulp.

For these reasons, centrifugal juicers are not generally recommended if high quality juice is wanted on a daily basis. They use a grater or shredder disc and a strainer basket with straight sides to hold the pulp in the machine. The shredder disk is at the bottom of the basket, which revolves at a high speed - 3600 RPM.

The produce is put into the top of the machine, and is pressed through a chute hitting the spinning shredder disc. While the produce is being shredded, juice is released. The basket spins at high speed, and the force pushes the juice through the strainer basket, and out of the front of the machine.

The pulp stays inside the machine. Generally this type of juicer can make 1-2 quarts before the juicer must be stopped and the pulp removed before further juicing can take place. This is not a continuous juicing appliance.

Centrifugal Ejection Juicers This juicer operates in much the same way as the centrifugal juicer above, except that the sides of the basket are slanted. This allows for the basket to be "self-cleaning", so there is no need to stop the juicer and empty it out. The pulp is ejected out of the machine, usually into a collection bin or basket, that can be lined with a plastic bag to collect the pulp, and then easily discarded.

Due to the short contact time of the pulp in the basket, these juicers need to spin faster than the centrifugal juicer, at about 6300 RPM. This type of juicer is the noisiest. They are good for producing a large quantity of juice but are not recommended for quality juice.

Spinning at over 6000 RPMs causes most of the enzymes to be destroyed due to heat, shock and friction. For this reason, Best Care does not sell any centrifuge type juicer. Sources: http://www.bestcare-uk.com/typeofjuicer.html .

Centrifugal force doesn't exist.....unless you construct Newton's laws in a rotating system. I've used various lab centrifuges for protein separation, and while they can get up to several thousand Gs of acceleration at maximum speed, they are not designed to hold an object as large as an apple. You'd also have to evenly destribute apples around the rotor; at the speeds they rotate, they must be carefully weight-balanced to avoid catastrophe.

We need a bigger centrifuge. Sources: xkcd.com/c123.html labessentials.com/centrifuge.htm Video This centrifuge is big enough to handle a bushel of apples, or maybe even several, but can only do 200Gs, compared to the smaller, higher speed lab centrifuges.

Apples In a Centrifuge No, but you could make it really dizzy! .

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My Odwalla "Carrot, Orange and Apple Juice" has 0% of my RDA of Vitamin C. How is that possible?

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