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European Food Research and Technology

July 2003, Volume 217, Issue 1, pp 49–52


Investigations on the oxalic acid content of honey from oxalic acid treated and untreated bee colonies

Abstract

Varroa destructor, an ectoparasitic mite, is one of the major pests of honeybees in many parts of the world. In order to keep bee colonies alive and productive, effective biological, biotechnical, or acaricidal control measures are necessary. Oxalic acid is one substance under discussion to replace synthetic acaricides (e.g. pyrethroids, organophosphates) to minimize the risk of residues in bee products.

The application of oxalic acid based solutions (Bienenwohl or a self-prepared oxalic acid solution with sugar) to control Varroa destructor resulted in no relevant changes in the oxalic acid content of honey produced the following year, compared with honey samples from untreated colonies from the same location.

The range of oxalic acid content in honey was 5–68 mg/kg in oxalic acid treated and 5–65 mg/kg in untreated colonies. The oxalic acid content of the honey was positively correlated with its electrical conductivity and thus with its original nectar or honeydew source.


http://link.springer.com/article/10.1007/s00217-003-0698-z

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You can compare to carrot's oxalic acid content 2400 mg/ kg -

Peanut has 1400 mg/kg.
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oxalic acid in vegetables g/100 g http://www.chameleonforums.com/blogs/entry/oxalic-acid-content-of-vegetables.215/
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The range of oxalic acid content in honey was 5–68 mg/kg in oxalic acid treated and 5–65 mg/kg in untreated colonies.

Interesting paper Finman, thanks for posting it.
Going to be difficult to prove illegal OA usage based on honey sampling.
 
Here you go ...
Radetzki_oxalic_acid_treatment_paper_pdf__page_5_of_7_.png

from the Radetzki paper which is probably the definitive article (unless Finman knows better). OA levels in treated colonies no higher - and oddly sometime lower - than control colonies. "Normal" levels reported by Mutinelli in 32 samples of different Italian honey was 20 - 400mg/kg ...

Sources:
http://web.archive.org/web/20071020111620/http://www.mellifera.de/engl2.htm
F. Mutinelli et al, l’acido ossalico nella lotta alla varroasi, L’ape 4/1997, Istituto Zooprofilattico, Legnaro, Italy
 
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None yet that I'm aware of but I have a sneaking suspicion it's only a matter of time!

Well, in that case, honey itself could well become a banned substance, so then we will know exactly where we stand.
 
Well, in that case, honey itself could well become a banned substance, so then we will know exactly where we stand.

We can compare to carrot, which has moderate ampount of oxalate 2 g/kg.

If the honey yield is 30 kg and you mix 2 g OA into the honey, content will be 0.07 g/kg.

When advice is that you can gasify as much as you want bees, no one can calculate that.
 
We can compare to carrot, which has moderate ampount of oxalate 2 g/kg.

That sounds quite high, with those levels of oxalic we will most likely be required to obtain a carrot licence in the UK, and a good reason for needing them.
 
Oxalic Acid Content of Vegetables

Published by sandrachameleon in the blog SandraChameleon's Blog. Views: 7355
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Oxalic acid has been shown to "bind" with calcium (and magnesium, iron, sodium and potassium) in the intestine, thus potentially interfering with the absorption of these. So, High Oxalic Acid levels can turn a seemingly high in calcium veggie (as compared to its phosporous content) into a poor choice of gutload. Thus Vegetables that are listed as being HIGH in Calcium, but are also High in Oxalates are really not in fact High Calcium rich foods, but potentially low/poor, being high in phosphorus content and low in bioavailable calcium when ingested.

Several tables I have consult have each shown slightly different values, but the following seems to reflect the general consensus:

HIGH in Oxalics (g/100 g) 1g =1%

Parsley1.70 (avoid using)
Chives1.48 (avoid using)
Cassava1.26 (avoid using)
Spinach .97 (avoid using)
Chard, Swiss .65 (avoid using)
Beet leaves .61 (avoid using)
Radish .48 (avoid using)
Collards .4 (offer sparingly -has sufficient calcium that some will still be bioavailable)
Leek .36 (offer sparingly -has sufficient calcium that some will still be bioavailable)
Beans, snap .36 (avoid or offer sparingly)
Brussels sprouts .36 (avoid or offer sparingly)
Garlic .36 (avoid or offer sparingly)
Leaf Lettuce .33 (offer sparingly)
Watercress .31 (offer sparingly)
Broccoli .25 (offer sparingly)
Kale .25 (some tables list as much lower, treat as moderate)

Moderate
Carrot .24 (okay in moderation)
Romaine Lettuce .21 (okay in moderation)
Arugula
Escarole
Chicory .21 (okay in moderation)
Turnip .21 (okay in moderation)
Sorrel .2 (okay in moderation)
Sweet potato .2 (okay in moderation)
Dandelion .2 (Older leaves have higher oxalic acid content than young leaves)
Celery .19 (okay in moderation)
Eggplant .19 (okay in moderation)
Cauliflower .15 (okay in moderation)

LOW in Oxalics (though still not all necessarily good gutload foods)
Asparagus .13
Endive .11
Basil
Cabbage .10
Carrot tops/greens
Okra .05
Onion .05
Pea .05
Potato .05
Turnip greens .05
Parsnip .04
Sweet Peppers .04 (some tables list this number as a bit higher, so treat like moderate)
Rutabaga .03
Raspberry .03
Cucumbers .02
Kale .02 (some tables list this number as MUCH higher, thus I would treat like carrot and other moderates. note that kale also effects iodine!)
Squash .02
Zucchini .02
Leek .02
Strawberry .01
Coriander .01
Corn .01
Dandelion .01 (young spring leaves)
Hibiscus Flower .01
Mint .01



Fruits that are Low or moderate in Oxalic Acid content:
Apples
Apricots
Cherries, no pit
Cherry Plums
Guava
Melon (Cantaloupes, honeydew)
Mango without peel
Nectarine
Oranges
Pineapple
Papaya


1 g = 1000 mg
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One of the big problems with food production is that the use of antibiotics leads to increased resistance in bacteria that cause human diseases. So for example, the use of oxytetracycline in hives for AFB increases the risk of human pathogens becoming resistant to oxytetracycline with an increased risk of human fatalities resulting from treatment failures.

https://www.ncbi.nlm.nih.gov/pubmed/19213248

Happy to give a lecture on microbiological resistance through plasmid transfer but it might be easier just to accept that the VMD are there to protect members of the public from the unintended consequences of lay persons using medicinal products which they have little knowledge about.
 
But it ain't about antibiotics is it to be honest? it's about cracking the whip and making sure everybody buys their Oxalic from one of the tory cronies

Exactly.

They'll probably take the mean of the prof's control hives and anyone whose honey tests higher and can't prove they buy the expensive stuff will be strung from the nearest tree
 
....
oxalic acid is a substance of endogenous origin which occurs in all mammalian species and in plants,
• plant derived food constitutes the major source of dietary oxalic acid and the intake in European diets was estimated to be in the range of 5 mg to 500 mg/day occasionally exceeding 1000 mg/day,
• oxalic acid is occurring naturally in honey with an average content of approximately 200 mg/kg (range 1 mg/kg to 800 mg/kg) and no significant increase of the natural content was observed following treatment of bees, the theoretical intake of oxalic acid in honey from either treated or non treated hives is insignificant compared to the overall intake of oxalic acid in daily food from other sources;
the Committee for Veterinary Medicinal Products concludes that there is no need to establish an MRL for oxalic acid
 
But it ain't about antibiotics is it to be honest? it's about cracking the whip and making sure everybody buys their Oxalic from one of the tory cronies

Sorry JBM but I simply don't agree.

Question for you. How do you know what the quality of cheap black market oxalic acid is? Are you confident that it hasn't been contaminated with other undesirable and toxic compounds?

Try researching falsified medicines. You might find it illuminating if not a bit scary.
 

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