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Juice Oxidation, Heating, and Other Facts About Juicers

celery juiceJuice Oxi­da­tion: There is a lot of com­pe­ti­tion in the juic­ing world; the juicer man­u­fac­tur­ers and dis­trib­u­tors are con­tin­u­ous­ly com­pet­ing with oth­er man­u­fac­tur­ers and distributors.

As a result, they add new fea­tures to their juicers and gain an extra share, spread­ing con­tro­ver­sial infor­ma­tion and myths to aid with their mar­ket­ing cam­paigns. This con­tro­ver­sial infor­ma­tion intends to make peo­ple think that a spe­cif­ic juicer mod­el must be the ulti­mate go-to kitchen appliance.

Read More: Tribest Z‑Star Z‑710 Man­u­al Juicer Review — Best Entry Mas­ti­cat­ing Gadget 

There are the fol­low­ing myths pro­mot­ed by some juicers man­u­fac­tur­ers and dis­trib­u­tors about the juice para­me­ter extract­ed by the dif­fer­ent juicers styles:

  • The high­er speed at which cen­trifu­gal juicers run cause more heat buildup than the slow juicers, there­fore destroy­ing vital enzymes the fresh juice should contain;
  • Cen­trifu­gal juicer’s high­er RPM increas­es oxi­da­tion and foam­ing action, hence decreas­ing the nutri­tion­al val­ue of juice produced;
  • All nutri­ents and enzymes are pre­served if mas­ti­cat­ing juicers are used to juice since they do not gen­er­ate heat dur­ing juicing;
  • The mas­ti­cat­ing sin­gles auger juicers are con­struct­ed with a dual or triple-stage auger that allows them to extract a juice with 80% more enzymes, 90% more nutri­ents, and 50% less pulp than oth­er stan­dard juicer models.

What is right, what is wrong from the state­ments above, and what affects the juice qual­i­ty? Here are the facts about juice qual­i­ty from the above statements.

Table of Contents

Centrifugal Juicers Heat the Juice

best beets carrots juicerHeat can indeed alter enzymes found in the juice and can even destroy them. How­ev­er, enzymes can only be dis­abled if the food tem­per­a­ture ris­es beyond 48C/118F degrees. From the blender man­u­fac­tur­ers, it is known that blender blades’ rota­tion­al speed can result in a tem­per­a­ture increase rang­ing from 23000 to 28000 RPMs. No juicer blade or auger in the mar­ket rotates at such a high speed.

For instance, an apple juice processed using a slow juicer increas­es tem­per­a­ture by only 8–11 degrees Fahren­heit com­pared to the unprocessed apple’s tem­per­a­ture. At the same time, a cen­trifu­gal juicer will increase the juice tem­per­a­ture extract­ed from the apple by 11–14 degrees Fahren­heit. This is because any fric­tion action auto­mat­i­cal­ly increas­es the tem­per­a­ture of the juice. Take an exam­ple of the same apple; if you process the apple using a man­u­al crank sin­gle auger juicer, the tem­per­a­ture increas­es by 10 degrees Fahrenheit.

From this test, we can con­clude that any juicer type dur­ing the juice extrac­tion changes the ini­tial tem­per­a­ture of the food prod­uct. If an elec­tric juicer is used, the tem­per­a­ture of extract­ed juice increas­es sev­er­al degrees high­er than using a man­u­al crank juicer. You note that the more the fric­tion, the high­er the tem­per­a­ture increase. Yet, all man­u­al crank mas­ti­cat­ing, cen­trifu­gal, twin gear, and sin­gle auger juicers will yield nutri­tious, fresh, and live juice with a lot of enzy­mat­ic con­tent. There is noth­ing wrong with an increase in juice tem­per­a­ture, pro­vid­ed it does not increase beyond 48 C/118 F degrees. As long as you start with cold food ingre­di­ents, your juice will be nutri­tious. Nutri­tion­al dam­age (if any) from juice heat­ing dur­ing the extrac­tion will be very minimal.

Centrifugal Juicers Oxidize the Juice

moongiantgo manual wheatgrass juicerAlthough oxi­da­tion occurs in most juicers, it does not affect all the juice nutri­ents. This process takes place when the cell wall of the juic­ing ingre­di­ents breaks open and is exposed to oxy­gen. For exam­ple, it turns brown when an apple is cut due to the oxi­da­tion effect. Though the oxi­da­tion process is nat­ur­al, it should be minimized.

Notably, all juicers cause oxi­da­tion in food ingre­di­ents. Dur­ing the juic­ing process, some juicers pro­duce more oxi­da­tion than oth­ers. Cen­trifu­gal juicers are known to cause more oxi­da­tion than slow juicers, though the extent of oxi­da­tion is not as much as most adver­tis­ers claim. Even the dam­age that it pro­duces is not very sig­nif­i­cant; the mar­ket­ing tricks make it exag­ger­at­ed­ly important.

The truth is when using a slow mas­ti­cat­ing juicer; you are guar­an­teed to break down fiber mate­ri­als found in veg­eta­bles and fruits thor­ough­ly. A com­plete break­down of these mate­ri­als will pro­duce a more nutri­tious juice. The slow mas­ti­cat­ing juicers work well due to their abil­i­ty to grind and chew­ing action, which dis­in­te­grates food ingre­di­ents bet­ter than cen­trifu­gal action. There­fore, more nutri­tious juice from a slow-mas­ti­cat­ing juicer is not con­tributed by its slow-motion effect. Imag­ine you are to select either a 60 RPM or 46 RPM ver­ti­cal sin­gle-auger slow mas­ti­cat­ing juicer mod­el or a 43 RPM mod­el. Between the two slow juicer mod­els, which one do you think pro­duces more nutri­tious juice? None, sim­ply because the pro­duc­tion of nutri­tious juice is not all about speed but about the grind­ing process. When select­ing between a 46 RPM ver­ti­cal sin­gle-auger slow mas­ti­cat­ing juicer and 110 RPM twin auger slow mas­ti­cat­ing juicers, the high­er-speed twin auger juicer will extract more nutri­tious juice because it grinds ingre­di­ents more thor­ough than the sin­gle auger ver­ti­cal slow juicer.

It is worth not­ing that, oxi­da­tion of juice also increas­es the longer extract­ed juice sits around. There­fore, it is advis­able to con­sume your juice imme­di­ate­ly after juic­ing it. By doing this, you will min­i­mize the chances of oxi­da­tion. Wor­ry no more about oxi­da­tion from your cen­trifu­gal juicer.

A Slower Juicer Extracts Superior Juice and More Juice

kuvings evo820 juicerNotably, the amount of juice to be pro­duced by a spe­cif­ic juicer type depends on the force or the pres­sure involved in extrac­tion. For instance, in a mas­ti­cat­ing juicer, this force is cre­at­ed with the dimen­sion and pres­sure of the pulp out­let. In con­trast, in cen­trifu­gal juicers, rota­tion­al speed and cen­trifu­gal force cre­ate this pres­sure while juic­ing. That means a sim­ple cen­trifu­gal juicer will work effi­cient­ly to pro­duce high-yield juice when juic­ing fresh food ingre­di­ents. For exam­ple, aver­age cen­trifu­gal juicers usu­al­ly pro­duce the same vol­ume or more juice from car­rots or beets than a sin­gle auger mas­ti­cat­ing juicer. In com­par­i­son, a sin­gle auger mas­ti­cat­ing juicer will extract decent vol­umes of juice from leafy greens, while a cen­trifu­gal juicer will fail with most of the leafy greens products.

Just like in juice qual­i­ty, the dif­fer­ence in juice yield is not so straight­for­ward. It is com­mon­ly known that most mas­ti­cat­ing juicers are more ver­sa­tile, although you will spend a lot more of your time dur­ing juic­ing. When choos­ing the best slow juicer among many mod­els, their speed will not be a sig­nif­i­cant fac­tor influ­enc­ing their juice qual­i­ty or yield.

Deceptive Claims By Chinese Juicers Distributors

aicok juicerMany juicer man­u­fac­tur­ers have come up with a lot of false data and oth­er forms of mean­ing­less claims in their attempt to dis­tin­guish their juicer mod­el from the rest. In their mis­sion to present their pur­port­ed­ly must-have mod­els, these man­u­fac­tur­ers use vague terms that do not match their juicer mod­els. These ill-defined terms include: “50% less pulp”, “90% more nutri­ents,” or even “80% more enzymes”. Such terms are worth­less unless verified.

Oth­er man­u­fac­tur­ers boast and claim that their sin­gle auger mas­ti­cat­ing juicer mod­els have triple or dual-stage auger press­ing action. The sin­gle auger juicers have more or less stan­dard auger shape, which most Chi­nese man­u­fac­tur­ers copy from South Kore­an rep­utable brand juicers, and there is no stage in a sin­gle auger that exists. They also will per­suade con­sumers to believe that their supe­ri­or juic­ing screen will remark­ably increase juice yield. Gen­er­al­ly, the Chi­nese man­u­fac­tur­ers do not invent new screens; they only dupe the exist­ing, usu­al­ly old, mod­els of South Kore­an juicers. In con­trast, more crit­i­cal stages among dif­fer­ent juicer brands cause an insignif­i­cant increase in juice yield.

As juicer man­u­fac­tur­er tries their best to rise to the pin­na­cle against their com­peti­tor, juicer cus­tomers get a cum­ber­some expe­ri­ence. This trou­ble­some expe­ri­ence is wit­nessed as con­sumers try their luck and get an “upgrad­ed” Chi­nese mod­el with “superb fea­tures”. Con­tin­u­ous “divi­sion” of the stan­dard auger into more juic­ing stages is just anoth­er trick to kick out one’s com­peti­tors and usu­al­ly has no gen­uine advantage.

Final Thoughts

Final­ly, you no longer need to wor­ry much about juice oxi­da­tion. Juice oxi­da­tion is an aspect that most man­u­fac­tur­ers have deployed to influ­ence your pur­chase option. How­ev­er, the buildup of heat in a juicer is not a gen­uine fac­tor in deter­min­ing the extent of oxi­da­tion since any juicer style can increase the tem­per­a­ture of food ingredients.

The cen­trifu­gal juicer mod­el can pro­duce ben­e­fi­cial and high-qual­i­ty juice. This is all you need to know. How­ev­er, if you pri­or­i­tize extract­ing the high­est juice qual­i­ty, then you can opt to pur­chase a slow-mas­ti­cat­ing juicer. For instance, if one has a severe med­ical con­di­tion that demands high-qual­i­ty juice in the diet, then one can­not take chances on such a health issue and buy a twin auger mas­ti­cat­ing slow juicer.

You have to under­stand that cen­trifu­gal juicers are good-qual­i­ty juicers that work effi­cient­ly to pro­duce nutri­tious juice full of enzymes. Although these juicer mod­els are known to increase oxi­da­tion, it is now unde­bat­able that con­sum­ing fresh juice is much health­i­er than tak­ing pas­teur­ized or shelf-sta­ble juice with few­er enzymes. There­fore cen­trifu­gal juicers are a use­ful style of juicers that can turn out to be of great use, espe­cial­ly in busy house­holds, since they are easy and quick to use.             

Posted in Juicers, Buying Advice

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