Guest guest Posted May 14, 2011 Report Share Posted May 14, 2011 Actually, sealing is very important to preserve VCO because air contains moisture and oxygen that cause gradual deterioration of the oil. Dry oil can get up to 0.2% moisture through adsorption when exposed to humid air. Tony ________________________________ From: Duncan Crow <duncancrow@...> Coconut Oil Sent: Thu, May 12, 2011 10:51:26 AM Subject: Re: Pure Healing Foods *UPDATE* It's not being sealed or being in a cool dark place that preserves VCO; it's the absence of water-based impurities. Pure oil, even if contaminated, fails to start fermenting, and does not give one a catch in the throat. Pharmaceutically pure oil has an " indefinite " shelf life. all good, Duncan > > VCO if properly sealed, kept in cool dark place will not go bad. I had my oil >last more than 5 years with out a single change. > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 14, 2011 Report Share Posted May 14, 2011 I have had my oil bucket open and sitting on my unused stove for months. It has also been a monsoon season here or two months--even though we never got a monsoon before. We have only had one nice day per week, which has made it a bugger to cut your grass. We got all-the-way two nice days this week! My oil is still fine. I don't have it covered because the lid on that bucket is nearly impossible to get off and on. And transferring it to a jar has been just - well - an oily experience. So I got lazy toward the end of this my second bucket, so I just scoop out of it every day. That's my story and I'm stickin' 2 it. :-) ________________________________ From: AGPacific Nutriceutical agnutriceutical@...  Actually, sealing is very important to preserve VCO because air contains moisture and oxygen that cause gradual deterioration of the oil. Dry oil can get up to 0.2% moisture through adsorption when exposed to humid air. Tony ________________________________ From: Duncan Crow <duncancrow@...> Coconut Oil Sent: Thu, May 12, 2011 10:51:26 AM Subject: Re: Pure Healing Foods *UPDATE* It's not being sealed or being in a cool dark place that preserves VCO; it's the absence of water-based impurities. Pure oil, even if contaminated, fails to start fermenting, and does not give one a catch in the throat. Pharmaceutically pure oil has an " indefinite " shelf life. all good, Duncan > > VCO if properly sealed, kept in cool dark place will not go bad. I had my oil >last more than 5 years with out a single change. > > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 14, 2011 Report Share Posted May 14, 2011 Oil repels water so I think there is no humidity adsorption into pure oils themselves. Also, the shelf life of MCT saturated oils is " indefinite " , so it doesn't seem to be the saturated fatty acids that are spoiling. In other words some other component and probably not the oil itself is spoiling in humid coconut oil. As you say Tony, ambient humidity be the culprit. Moisture will adsorb into water-based impurities and start the rotting process. Rotting at any rate is resisted by oil itself and supported by water-based solubles. Just possibly the 1.1% linoleic acid, a polyunsaturate component, may rancidify in the presence of oxygen. But that's kind of a leap to a conclusion because it is a very low percentage and it has to be exposed to oxygen in order to spoil. Because VCO is a solid that pretty much repels water, the exposed surface in the pail is most at risk. But when pharmaceutically pure oil fails to ferment even in a pail in the kitchen, regardless of how much air is trapped inside the bucket, one has to wonder why other oils rot at all. My son has about 1/4 of a jar of Quality First's pharmaceutically pure coconut oil in the pantry; it smells and tastes like it was harvested yesterday but it's 7 years old. We live in the Pacific northwest where there is lots of humidity, and nothing happened to it so far, so, I'm thinking it's more likely to be the water-based impurities in coconut oil that attract the .2% humidity from the air and start the spoiling process. This kind of oil is outside my scope of reference. all good, Duncan > > Actually, sealing is very important to preserve VCO because air contains > moisture and oxygen that cause gradual deterioration of the oil. Dry oil can > get up to 0.2% moisture through adsorption when exposed to humid air. > > Tony > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 15, 2011 Report Share Posted May 15, 2011 The mystery deepens here because .2% of water content does not deteriorate some VCO but does others. Quality First has one with an indefinite shelf life. Oil kills enveloped bacteria, and nearly all are enveloped, so microbial species that make coconut oil go bad are either enveloped and living only on the water-based impurities, or non-enveloped and breaking down the oil itself. The oil in one product is going rancid faster than the other, and the only difference comes down to the amount of water-soluble impurities. all good, Duncan > > This small moisture content may not give significant effects to the shelf life > of the VCO except when the oil is microbially contaminated and/or exposed to > significant amount of heat (from heat sources or sunlight) to cause hydrolysis. > > Tony > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted May 16, 2011 Report Share Posted May 16, 2011 Rico, QFI's Virgin Oil De Coco Creme shows almost no rancidity in seven years at room temperature. The patented equipment they do it on uses a method remarkably like yours: wet-milling, chilling, centrifuging, a completely " no-heat " method, so you can probably hit the sweet spot yourself. I'm not sure, but if you sell oil to Vinia Marquez, the inventor, e-mail: info @t qualityfirst.on.ca she might coach you on making it " pharmaceutically pure " ; I dont know what filter she uses. But what does it matter when the world is eating the stuff up as it is? all good, Duncan > > Hi Duncan, > > So deterioration of the oil is a purification (excluding moisture) issue then? I > use Whatman filter paper to filter my oil and it produces a crystal clear oil. > Moisture is at 0.18%. Still it deteriorates after about 3-4 years.  > I use a non-abrasive, wet milling, non-fermenting, non-heating, oil separation > method. > > Would highly appreciate your comments. > > Thanks, > Rico > Quote Link to comment Share on other sites More sharing options...
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