Colombe is an uncommonly occurring given name for women but a very prominent last name for all people (#47120 out of 150436, Top 31%). (2000 U.S. Census). Charted below is the birth name popularity of Colombe for girls. Colombe has yet to make it into the list so far.
If you look at processed food, you see all sorts of other gums like carrageenan, xanthan gum, cellulose gum, locust bean gum, agar, and so on. They thicken things: Ice cream, marshmallow fluff, pancake syrup, etc., all benefit from thickening.
Because poligeenan can be produced from carrageenan, many researchers and laypeople have expressed concern that we might be exposed to poligeenan through contamination of the food supply. However, the most recent sources indicate that the poligeenan contamination level of food-grade carrageenan is less than 5%.