Debra Lynn Dadd
Natural Peanut butters / refrigeration?
Do the "natural" peanut butters (the ones with only peanuts and salt) REQUIRE refrigeration for health reasons or is that only a suggestion on how to keep the natural oils from separating? Thanks so much for sharing your vast knowledge.
POSTED BY KLP :: NORTH CAROLINA USA :: 09/12/2007 8:42 AM
Personally, I always refrigerate mine, but I've noticed that in my local natural food store, where they make fresh nut butters, they don't refrigerate them. They are just sitting on a shelf next to the nut grinder.
On the other hand, these nut butters probably sell fairly quickly. Perhaps there is a reason one might need to refrigerate nut butters for long term storage.
Readers, any thoughts on this?
I learned in my Biochemistry class that there is a very potent mold that can often be found in peanut butter. I forget the biological name of that mold, but it is a potent mutagen, which induces cancer in the long run. So it is best to keep it in the fridge to minimize the growth of microorganisms. Also, peanut butter is rich in oil. So keeping it in the fridge would prevent the oils from going rancid. This is the same idea as keeping nuts and olive oil in the fridge to preserve the natural oils.
COMMENT FROM DEBRA: The mold is Aspergillus Vlavus and it produces a carcinogen known as aflatoxin, which is considered a cancer-causing substance in humans and animals by both the FDA and world health authorities.
Does this mean that we should never eat peanut butter? Personally, I don't eat a peanut butter sandwich every day, but I do occasionally make a delicious Asian Peanut Honey Salad Dressing. Here is a balanced view on peanut butter that I agree with: Delicious Organics: Peanuts & Peanut Butter.
POSTED BY GINA :: BC CANADA :: 09/19/2007 6:25 AM
Thank you so much for your advice and especially for the delicious organics link you provided which I read thoroughly. I am thrilled to have found the Arrowhead Mills organic peanut butter which is made from Valencia peanuts which is much less likely to grow this mold from what I read. I immediately ordered 10 jars of the Arrowhead Mills peanut butter from one of our favorite websites that just happens to carry it. I eat peanut butter daily and sometimes more than once a day and I am so pleased to have found an answer to my worries over the mold growing in peanut butter. Thank you!
POSTED BY KLP :: NORTH CAROLINA USA :: 09/27/2007 8:28 AM
Nut butters can go rancid fairly quickly if kept unrefrigerated. I also store all whole nuts in the fridge or freezer until I use them.
POSTED BY MICHELLE LYNNE GOODFELLOW :: THE GREENER CLEANER :: GREENERCLEANER.BLOGSPOT.COM :: ONTARIO CANADA :: 10/02/2007 10:29 AM
I understand that the nut butters need to be refrigerated or they will eventually become rancid. I learned a trip to help with the oil separation - store your nut butter jar upside-down. When you open the jar, you have access to the good part of the nut butter and not just a bunch of oil. If it is too dry, stir it a bit.
POSTED BY JLB :: TEXAS USA :: 10/02/2007 10:38 AM
How quickly would peanut butter go rancid if left unrefrigerated? I eat peanut butter daily and use a jar in 4 - 6 weeks. I was also under the impression that I would know if it was rancid by the smell and/or taste. Is this not the case? Thanks.
POSTED BY KLP :: NORTH CAROLINA USA :: 10/05/2007 12:12 PM
It's VERY important to buy organic peanut butter. In the book Diet for a Poisoned Planet: How to Choose Safe Foods for You and Your Family there was no food higher in pesticide concentration in the American diet. Peanut butter contains 183 pesticide residues. We always refrigerate our peanut butter. I took a gardening course with a botanist and she said that peanut butter is the most important food to buy organic.
POSTED BY SUN :: FLORIDA USA :: 10/05/2007 12:20 PM
From The New Whole Foods Encyclopedia by Rebecca Wood:
"Nut and seed butters easily become rancid, so purchase in small quantities and keep refrigerated. A stale, foul aroma and a sharp, burning taste indicate rancidity."
From my own personal experience, a nut butter left unrefrigerated (after opening) would only last about a week at room temperature before starting to go rancid. And even many refrigerated ones can go rancid within a month of opening.
POSTED BY MICHELLE LYNNE GOODFELLOW :: THE GREENER CLEANER :: GREENERCLEANER.BLOGSPOT.COM :: ONTARIO CANADA :: 10/09/2007 4:45 PM
Are unopened jars of nutbutters to be refrigerated also? Will the unopened nutbutters grow mold?
COMMENT FROM DEBRA: I think you don't need to refrigerate the nut butters until the jar is opened. They don't refrigerate unopened jars at the natural food stores.
POSTED BY HELEN :: WASHINGTON USA :: 10/09/2007 4:47 PM
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