Twin Gear Juicers
Gear juicers use a different method of extracting juice then when compared
to a centrifugal or masticating juicer. Twin Gear juicers work by having
two (twin) interlocking gears that are aligned very closely together.
The produce to be juiced such as vegetables, wheatgrass and fruit are
fed into the rotating twin gears where the produce is crushed and pressed
thus releasing the juice from the fibres. This differs from centrifugal
and masticating juicers where the produce is shredded / cut.
Examples of leading twin gear juicers are the Green
Star GS3000, Twin Health living juice extractor and the Samson Ultra.
Twin gears tend to operate at much lower RPM than other types of juicer
and so less air is introduced into the juice. This means the juice quality
benefits because the oxidation or nutrients occurs at a much slower rate.
With most centrifugal juicers the juice that is created should be consumed
within a few minutes of making it, with some Twin Gear models such as
the Twin Health juice can be stored overnight whilst still retaining its
high nutrient content. Because Twin Gear juicers operate at a lower speed
they also tend to produce less heat. This means more juice nutrients stay
in their natural form. Enzymes are particularly sensitive to heat and
their molecular structure is altered and damaged by heat.
Because of the low speed and low heat generation of Twin Gear juicers
it is fair to say that many consider Twin Gear models to be the best type
of juicer for extracting juice with the highest possible nutrient content.
An alternative method of juicing that produces juice with a similarly
very high nutritional content is the hydraulic juice press method as can
be found on the greatly more expensive Norwalk Juice Press.
Some Twin Gear models have ‘Biomagnets’ and Bio ceramic materials
located in the twin gears. The effect of the juice passing through the
magnetic field produced by these magnets is the further reduction of oxidation
of certain minerals meaning that the juice has a higher nutrient content
and will keep for longer.
The twin gear juicing process does have its downsides as well as its
health benefits. The twin gear models tend to be a bit more fiddly to
clean. They can also require more time to create juice when compared to
centrifugal models as their feeding chamber (where the produce is fed
down onto the twin gears) tends to be narrower than many centrifugal models.
This means you have to cut your fruit and vegetables up into smaller pieces.
It is also apparent with both the Twin Health and the Green Star that
feeding the produce too quickly through the juicer will result in the
twin gear housing chamber becoming clogged up with pulp and a foamy juice
being produced which can back up the feeding chamber. Best results are
to be had by chopping up the produce into small pieces and feeding it
through the juicer at a slower rate.
Twin gear models excel at juicing the more fibrous types of produce (including
virtually all green vegetables, barley grass and wheatgrass).
If you are going to juice mostly soft fruits such as oranges, grapefruit
and limes then we do not recommend a twin gear juicer as they do not juice
these types of produce as efficiently as a citrus press or centrifugal
Some Twin Gear juicers such as the Green Star and Twin Health can cope
with more than just juicing. Many come with a blank screen that can be
used to produce homogenised foods, nut butters and sorbets. Some models
are also capable of making pasta and grinding grains.
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