Dear All,
I hate to admit my ignorance again but I fail to see the connection between the terms “allergy” and “foreign bodies”.
Maybe this is area-oriented but in my experience foreign bodies usually refers to a “physical” something which would not be expected to be present in the item being consumed, it could be naturally sourced due to the environment and then not be removed by the designated process to remove it (eg a piece of wood or a bit of fishing net) or it could derive from an error in the manufacturing process (eg a paper clip). Something like pesticides would be a chemical contaminant in this classification.
Anyway I’m quite willing to be edified on this (no knowledge is more dangerous than some knowledge 
?).
As to the vegetable query, I know there are already many brilliant refs on allergic reactions in this forum but since it’s not my direct area and I was too lazy to search, I “netted” -
I googled food allergy / vegetables and predictably got lots of everything .
A quick general overview list is here –
http://www.woodlandh...od_allergy.html
(the name looked a bit weird but the content seemed authentic)
The above gives –
“Fruit and vegetable allergy "
Allergic reactions to fruits and vegetables are usually mild and often they just affect the mouth, causing itching or a rash where the food touches the lips and mouth. This is called oral allergy syndrome. A number of people who react in this way to fruit or vegetables will also react to tree and weed pollens. So, for example, people who are allergic to birch pollen are also likely to be allergic to apples. Cooking can destroy a number of the allergens in fruits and vegetables, so cooked fruit often won’t cause a reaction in people with an allergy to fruit. Pasteurised fruit juice might not cause an allergic reaction either, for the same reason. However, the allergens in some vegetables, such as celery, aren’t affected by cooking. Some fruits and vegetables, such as tomatoes, are more likely to cause a reaction as they get riper.”
I suppose pollen could be called a foreign body ??
This additional site gives a detailed breakdown on many vegetable offenders –
http://www.labspec.co.za/l_veg2.htm
Extracting part of the tomato item -
“Clinical experience"
"Tomato is probably the vegetable which most often gives symptoms in the form of urticaria or rash and itching in eczematous patients. Adverse reactions following intake of fresh tomato are common. Hoffman et al. (15) found 14/25 eczema patients positive to tomato in ImmunoCAP® PAST. The incidence of allergy to tomato in different patient groups has been reported (19). In 102 grass-pollen allergic children, almost 40% were found to be allergic to tomato (22). Some investigators have suggested crossreactions between tomato, peanut (22), and grass pollen (26). Tyramine, serotonin and tryptamine in the tomato can give rise to symptoms similar to food allergy.”
So it does seem that the tomato is not so innocent in the allergy field (to my own surprise actually). The previous items in the thread covered regulatory aspects where it seems to have escaped so far. The reality seems to be that nearly everything is allergic to somebody although I presume some specific criteria are used for labelling such as nature of reaction / target consumers – do children love tomatoes ?? I guess not.
So as to the precise obligation to inform, I don’t know how you make that decision - maybe it’s spelled out in one of the other refs on this forum???
Rgds / Charles.C
