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Found this thanks to a New York Times article.

It's the Food and Drug Administration handbook on acceptable food contamination levels. It make for, er, interesting reading. Remember, the contamination levels described have to be exceeded for the food to fail the legal requirement.

For example:

CITRUS FRUIT JUICES, CANNED Mold
(AOAC 970.75) Average mold count is 10% or more
Insects and insect eggs
(AOAC 970.72) 5 or more Drosophila and other fly eggs per 250 ml or 1 or more maggots per 250 ml

DEFECT SOURCE: Mold – processing contamination, Fly eggs and/or maggots – post harvest insect infestation
SIGNIFICANCE: Aesthetic

************

CHOCOLATE AND CHOCOLATE LIQUOR Insect filth
(AOAC 965.38) Average is 60 or more insect fragments per 100 grams when 6 100-gram subsamples are examined
OR
Any 1 subsample contains 90 or more insect fragments
Rodent filth
(AOAC 965.38) Average is 1 or more rodent hairs per 100 grams in 6 100-gram subsamples examined
OR
Any 1 subsample contains 3 or more rodent hairs
Shell
(AOAC 968.10-970.23) For chocolate liquor, if the shell is in excess of 2% calculated on the basis of alkali-free nibs

DEFECT SOURCE: Insect fragments – post harvest and/or processing insect infestation, Rodent hair – post harvest and/or processing contamination with animal hair or excreta, Shell – processing contamination
SIGNIFICANCE: Aesthetic

**************

MUSHROOMS, CANNED AND DRIED Insects
(AOAC 967.24) Average of over 20 or more maggots of any size per 100 grams of drained mushrooms and proportionate liquid or 15 grams of dried mushrooms
OR
Average of 5 or more maggots 2 mm or longer per 100 grams of drained mushrooms and proportionate liquid or 15 grams of dried mushrooms
Mites
(AOAC 967.24) Average of 75 mites per 100 grams drained mushrooms and proportionate liquid or 15 grams of dried mushrooms
Decomposition
(MPM-V100) Average of more than 10% of mushrooms are decomposed

DEFECT SOURCE: Insects – preharvest insect infestation, Mites – preharvest and/or post harvest infestation, Decomposition – preharvest infection
SIGNIFICANCE: Aesthetic

This is rather putting me off my next meal….. 🙂

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