3

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Does Extra Virgin Olive Oil (EVOO) break down faster than previously thought?

Answered on August 19, 2014
Created November 01, 2010 at 4:26 PM

This Mercola interview with Dr. Rudi Moerck is quite interesting. These points stood out for me:

1) EVOO goes rancid faster than minimally processed olive oil due to it's high chlorophyll content.

2) Dr. Moerck recommends adding a drop of the antioxidant astaxanthin to olive oil when you first use it, turning it orange. When it stops looking orange, it's an indication that the oil has become completely oxidized and should be discarded.

3) Always buy olive oil in small batches and use it quickly (I already knew this).

Thoughts?

http://www.youtube.com/watch?v=4oEhD6rZHgM

3327924660b1e2f8f8fc4ca27fedf2b2

(2919)

on April 24, 2012
at 09:28 PM

Dismissing Mercola is just stupid, because the man always reads the medical literature before making conclusions - which is what we should all do in regards to health.

Efc949694a31043bfce9ec86e8235cd7

(970)

on November 10, 2010
at 12:06 AM

Great follow-up and info, Matthew! =)

0bc6cbb653cdc5e82400f6da920f11eb

(19235)

on November 02, 2010
at 11:59 AM

Mostly just ranting :) He didn't provide any evidence that it's true either.

8e3782b68e033763485472f414f507a5

(2433)

on November 02, 2010
at 11:26 AM

So do you have any evidence that it's false or are you just ranting?

89e238284ccb95b439edcff9e123671e

(10299)

on November 02, 2010
at 07:18 AM

this even makes me cynical!

Efc949694a31043bfce9ec86e8235cd7

(970)

on November 01, 2010
at 06:55 PM

My assumption: refrigeration would likely retard the breakdown. Anecdotal: http://recipes.howstuffworks.com/how-olive-oil-works3.htm

89e238284ccb95b439edcff9e123671e

(10299)

on November 01, 2010
at 05:59 PM

How would refrigeration influence this?

Efc949694a31043bfce9ec86e8235cd7

(970)

on November 01, 2010
at 05:25 PM

He also has some interesting things to say about krill oil. I haven't listened to the YouTube videos yet, but it's on my to-do list. :)

21fd060d0796fdb8a4a990441e08eae7

(24543)

on November 01, 2010
at 04:39 PM

Thanks for this interesting link. When googling Dr. Moerck, I was interested in his critiques of fish oils for the same reasons (oxidation faster than you would assume).

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2 Answers

3
0bc6cbb653cdc5e82400f6da920f11eb

(19235)

on November 02, 2010
at 12:08 AM

Guy on youtube video says extra virgin olive oil is bad... he tested it himself so it must be true.

Mercola is one of the biggest quacks on the internet and he is interviewing the head of a supplement company, i'd take anything they say with caution. I usually find dismissing anything Mercola says saves a lot of time. He occasionally gets things right, but only by accident.

Moerck's company sells the antioxidant astaxanthin for you to add to your olive oil.

Moerck sells krill oil and also happens too say fish oil is bad and that krill oil is better.

People like this are always happy to scare you into believing that something is bad for you, while selling you an expensive solution at the same time. They need to keep people worried so as ato keep them buying their expensive products. But then maybe i'm just cynical.


I thought i'd add some more info.

1) EVOO goes rancid faster than minimally processed olive oil due to it's high chlorophyll content.

Extra virgin olive oil does contain some chlorophyll, upto 6-10 parts per million from my reading, so not a high amount. Chlorophyll can increase oxidation in placed in bright light but can also prevent oxidation in the dark as the chloroplasts contain antioxidants. EVOO naturally contains antioxdent phytochemicals that refined olive oil does not. It also starts out with lower levels of peroxides than refined oils.

Adding a coloured antioxident astaxanthin to the oil would not show when the oil had become oxidised, only that the astaxanthin have been used up, this should have prevented some oxidation of the oil.

Light increases oxidation of olive oil of any kind, this applies to most fats. In an ideal world all EVOO would be sold in dark glass bottles to block out light. Keeping oil cool and in the dark will slow oxidation. I expect the clear bottles are due to most consumers wanting the see the colour of the oil when they buy it, most would probably find a green or brown colour off-putting. Leaving the lid off the bottle for few minutes is not going to ruin the oil.

I don't have time to dig out references as they are all in obscure journals. This site has some good information though - http://www.oliveoilsource.com/page/chemical-characteristics

Also notived that the guy being interviewed in the video does not seem to know there is a difference between palm oil and coconut oil.

0bc6cbb653cdc5e82400f6da920f11eb

(19235)

on November 02, 2010
at 11:59 AM

Mostly just ranting :) He didn't provide any evidence that it's true either.

89e238284ccb95b439edcff9e123671e

(10299)

on November 02, 2010
at 07:18 AM

this even makes me cynical!

8e3782b68e033763485472f414f507a5

(2433)

on November 02, 2010
at 11:26 AM

So do you have any evidence that it's false or are you just ranting?

Efc949694a31043bfce9ec86e8235cd7

(970)

on November 10, 2010
at 12:06 AM

Great follow-up and info, Matthew! =)

3327924660b1e2f8f8fc4ca27fedf2b2

(2919)

on April 24, 2012
at 09:28 PM

Dismissing Mercola is just stupid, because the man always reads the medical literature before making conclusions - which is what we should all do in regards to health.

0
A908488951206f4e2ba1f23c27928ef4

on August 13, 2012
at 09:07 PM

He's just ranting. As I suspected the reason Dr Mercola has supplements on his website http://articles.mercola.com/sites/articles/archive/2009/07/11/Is-Your-Health-Freedom-Really-Free.aspx 1- he's done extensive research on what he does recommend 2- well just watch the video You are not going to learn anything useful listening to your doctor about preventing disease, or achieving wellness. MD's practice allopathy (uses substances or techniques to oppose or suppress the symptoms)and do nothing to investigate the cause of the symptoms.

Think of symptoms, ie:pain, digestive upset, as the warning or "check engine" light on your car, when the light comes on in your car, do you get a hammer and smash that annoying light, or cut the wires to the warning light? No you pull over, check for water in the radiator, check the oil, look for broken belts etc...

When you have a symptom, this is your body's way of saying it needs something, ie calcium, magnesium, rest even, although too often these days It's usually a nutrient deficiency of some kind which is rampant in our country due to the standard american diet (SAD). Our soil has been severely deficient in minerals for decades. If it's not in the plant, it's not in the food, if you don't get it in your food, you're not getting it in your diet. The largest killer in the US is the sentence "You can get everything you need in your diet from the 4 food groups", NOT! MD's are the #3 cause of death in this country, or physician driven therapies. So the last person you want to see is an MD that is going to give you drug to suppress your symptoms, you're only going to make the problem worse.

Dr Mercola is right on target, he does extensive research before he makes any recommendation, and it's something he takes himself, NOT so he can financially benefit, the amount of time/money he spends to give us honest information comes at a price.

Rancid or oxidized oil is full of free radicals which cause extensive damage in the body and defeats the purpose of using a "healthy" oil in your diet. We all need Essential Fatty Acids but you need to know WHAT you're using and if in fact is it in a healthy form.

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