This handout was published by the now defunct Allergy Asthma Association of Alberta in 1987. Some of the information is probably outdated by now but at least it will give you some ideas of where to look for corn sources.
A person who is hypersensitive to corn must avoid corn and all corn derivatives in food and non-food items. Simple avoidance of corn as a vegetable is not difficult, it is the avoidance of corn derivatives that is a challenge to the person hypersensitive to corn. Some individuals may be able to tolerate corn in its vegetable form but not corn derivatives.
Corn sensitivity can result from contact inhalation or ingestion: the smell of corn popping or fresh corn on the cob cooking, body/bath powders, starch on clothing when ironing or contact on the skin to clothes that have been starched, glue in shoes or gloves which may contain corn, can all produce various symptoms of different degrees.
Corn is used to “dust” many containers of cardboard and plastic surfaces. Try frozen cans of juice instead of “drinking boxes” or use fresh meat and vegetables wrapped and frozen and home canned fruit. Corn may also line the milk “cartons” so bottled milk may be wise. Many medications are also not corn free so check with the manufacturer before using them.
All corn and corn derivatives must be avoided. Look for these terms in ingredient listings:
Foods containing unspecified vegetable oil or shortening should not be used, as the source of the oil may be corn.
Baking powder usually contains “starch”. To make a corn-free baking powder, use one of the substitutions below:
- Combine equal parts (by volume) of baking soda, cream of tartar and potato flour or starch.
- Arrowroot may be substituted equally.
- Combine 4 oz of cream of tartar, 2 oz baking soda, and 4 oz ground rice – sift together
Products which may contain corn
|Adhesives: Envelopes, stamps, stickers, tapes, Gummed Papers: Envelopes, labels, stamps, stickers, tapes
Paper Containers: boxes, cups, plates. These three only when foods have a moist phase in contact with these cartons.
|Cups, paper||Starch, while ironing starched clothes|
|Holiday type stickers||Talcums|
|Breath spray and candies|
Aspirin and other tablets
Expectorants or dilutents in capsules, lozenges, ointments, suppositories, tablets, vitamins
Foods which may contain refined corn and other corn products:
|Baking powders||Batters for frying||Beers|
|Bleached/unbleached wheat flours||Bourbon and other whiskies||Breads/other pastries|
|Catsups||Cereals, many processed||Cheeses|
|Confectioner’s sugar (icing sugar)||Corn Flakes||Chinese Dishes|
|Cream Pies||Cream Puffs||Dates, Confection|
|Deep fat frying mixtures||Dextrose||Fish, prepared and processed|
|French dressings||Frostings||Fruits – canned, frozen|
|Fruit juices||Frying fats||Gelatin dessert|
|Glucose||Graham crackers||Grape juice|
|Ices||Ice cream||Cooking fumes of popping corn|
|Ketchup||Leavening agents, baking powders, yeasts||Lemonade|
|Meats, processed and cold cuts||Milk, in paper cartons||Monosodium glutamate|
|Pastries / Cakes/ Cup cakes||Peanut Butter||Peas, canned|
|Pickles||Pies, creamed||Powdered sugar|
|Rice, coated||Root Beer||Salt|
|Salad Dressing||Sandwich spreads||Sausages|
|Sherbets||String beans – canned/frozen||Soups|
|Soy Bean milks||Syrups, commercially prepared “Cartose”, glucose, “Karo”, “Puretose”, “Sweetose”||Tablets/Medications|
Allergy Information Association, Corn Information Sheet
Sask. Public Health Dept., “One Man’s Meat is Anothers Poison”.
Red Deer Health Unit – Nutrition Information.
Written in 1987 but still pretty relevant!