This answer is from the Codex Alimentarius of the Food and Agriculture Organization (FAO) of the United Nations, which is the main source for all food manufacturing standards:

ftp://ftp.fao.org/codex/standard/volume12/en/cx_a06e.pdf

Notice that this source does not use the word “complex” in this chemical expression. Again, use your judgment.

Fuad

Note: ProZ.com seems to be going through another server crash. I was able to post this answer using the German ProZ site (http://de.proz.com). I am not sure if posting the answer through this site will register the answer and trigger a notification e-mail to you or not, but I thought it was worth a shot, especially seeing that your questions have remained unanswered for so long, and I know most translation jobs have strict deadlines. Good luck.