Is cornstarch gluten free? Most of the cornstarch that is out there is gluten free. It is known as a thickening agent that is used in dressings, soups, marinades, etc. Pure corn starch which is 100% corn starch is naturally gluten free.
The only way that corn starch can be contaminated with gluten is if it is manufactured in a facility that manufactures gluten containing foods. And if that is the case there could be traces of cross contamination but that doesn’t happen often.
Is cornstarch gluten free? Photo credit: iStock-minadezhda
The best way to check if your corn starch is gluten free is to check the label for that appropriate certification. To receive a gluten free label certification a food must be tested and confirmed with fewer than 20 parts per million of gluten. A small amount of gluten will most likely not trigger any symptoms with people that have celiac disease.
A gluten free seal means that it has been independently tested by a 3rd party such as an NSF international organization.
Here are some other suitable substitutes to cornstarch which is:
- Guar gum- It is low in calories and high in fiber which is a good weight loss food.
- Flaxseed gel
- Xanthan gum
- Rice Flour
- Potato starch
- Tapioca starch
- Arrowroot powder
The Bottom Line is cornstarch is naturally gluten free. The only way that corn starch could contain gluten is if it manufactured in a facility that makes gluten containing products. And with this is the possibility of cross contamination because of the proximity of gluten containing products.
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- SCS- Global Services- https://www.scsglobalservices.com/services/gluten-free-certification
- NSF- https://www.nsf.org/knowledge-library/topic/consumer-resources/food-safety
- U.S Food & Drug Administration- https://www.fda.gov/food/nutrition-education-resources-materials/gluten-and-food-labeling
- Thombare N, Jha U, Mishra S, Siddiqui MZ. Guar gum as a promising starting material for diverse applications: A review. Int J Biol Macromol. 2016 Jul;88:361-72. doi: 10.1016/j.ijbiomac.2016.04.001. Epub 2016 Apr 1. PMID: 27044346.
- Daly J, Tomlin J, Read NW. The effect of feeding xanthan gum on colonic function in man: correlation with in vitro determinants of bacterial breakdown. Br J Nutr. 1993 May;69(3):897-902. doi: 10.1079/bjn19930089. PMID: 8329363.
- Jyothi AN, Sheriff JT, Sajeev MS. Physical and functional properties of arrowroot starch extrudates. J Food Sci. 2009 Mar;74(2):E97-104. doi: 10.1111/j.1750-3841.2008.01038.x. PMID: 19323747.