Stupid Question Maybe - allergy to pineapple?!!

[GeorginaA]

Just given ds2 (1 year old) a baked potato with cottage cheese & pineapple. He's had cottage cheese before, I think but not 100% sure... I lose track. He was fine until he tasted a bit of pineapple when he spat it out and examined it in disgust then chucked it on the floor. Then the next mouthful of cottage cheese he spat out (in anticipation?) which smeared around the top part of his mouth.

When I cleaned him up later, I noticed a pattern of red all around the top of his mouth in the exact pattern of where he's spat the cottage cheese out. Didn't look overly swollen but a definite red skin mark. Does this mean he was allergic to something in that?

Now, he's a yoghurt and cheese ADDICT so I'm fairly confident that it's not a dairy allergy (we just would have noticed by now, I'm sure of it). Is it possible to be allergic to pineapple? Or is it just sensitive skin to the acidic nature of pineapple?

Just seems like an odd thing to be allergic to seeing as he's shown no sign of allergies whatsoever up to now and has a pretty extensive diet.

Could be the potassium sorbate - sounds like a preservative to me (but I haven't checked).

Googled and found this: Potassium sorbate is a potassium salt version of sorbic acid, a polyunsaturated fat used to inhibit mold growth. Sorbic acid was first isolated from the oil of the unripened rowan berry (sorbapple or mountain ash berry) in 1959 by A.W. Hoffmann. Sorbic acid obtained its name from the scientific name for mountain ash (i.e. Sorbus aucuparia, Linne), the parent of the rowan berry. The chemical structure of sorbic acid was determined some time between 1870 and 1890 (see above), and then chemically synthesized by O. Doebner in 1900.
The value of sorbic acid, or its salts, was not immediately recognized. (It would only be much later that these compounds would be appreciated for their ability to interfere with ATP metabolism in microbes, while posing no health risk when consumed by mammals.) In 1939 and 1940, E. Mueller (Germany) and C.M. Gooding (U.S.) discovered sorbic acid's antimicrobial properties. Subsequently, in 1945, C.M. Gooding and Best Foods, Inc. were awarded the first patent for the use of sorbic acid as a fungistatic agent in foods.
Since the 1950's, sorbic acid has been repeatedly tested for safety and efficacy, and today stands as one of the most thoroughly tested food additives in history. In fact, few substances have had the kind of extensive, rigorous, long-term testing that sorbic acid and its salts have had. It has been found to be non-toxic even when taken in large quantities, and breaks down in the body into water and carbon dioxide in the Krebs Cycle.

bobbybob

sorry to hijack the thread but I am intrigued by your mention of your ds being allergic to banana, and this being a 'cross allergen'. What does this mean?

dd1 (aged 4) is allergic to banana, kiwi and egg and some nuts (so we've been warned to steer clear of all of them). Not sure about latex, but it might explain some 'odd' reactions she's had to things.

Is banana a common allergen? Most people I've met seem really surprised at it, including medics, whereas kiwi seems to be well known. And is dd likely to be allergic to pineapple? We have avoided it as DH can't stand it (he and my SIL and FIL say it makes the glands in their mouths go 'squirty' IFYKWIM!!!) But I have noticed that dd has reacted to mixed fruit juices - eg mango and pineapple.

If you are allergic to latex, you should avoid banana and kiwi.

I'm pretty sure that the reverse is true - or actually it might really be an undiognosed latex allergy, and the reaction to bananas and kiwis is actually a cross reaction.

Plums and chesnuts are two other possible cross reactors (I will see if I can find the whole list), but (apart from banana and kiwi) you only have to avoid the ones that cause the problems, or else it would be pretty limited fruit wise.

Finally found the list, and interestingly all the things on the medium reaction list, bob is only just starting to eat. Today he ate 3 pieces of apple.

Maybe it's a sign he's getting better.

cross reactors to latex