Hvad er cellulose gum lavet af?

Hvad er cellulose gum lavet af?
Blandt andet: stærkt forarbejdede træmasse og bomuldsfibre! Kilder: http://books.google.com/books?id=vxtxWneRBN4C&pg=RA1-PA554&lpg=RA1-PA554&dq=cellulose+gum+wood+pulp&source=bl&ots=qM9eSWEz04&sig=ygCCI1UnLlNcnMEO5SwzReYYNrg&hl=en&ei=0lkTSsfoAouitgP9pPHnDQ&sa=X&oi=book_result&ct=result&resnum=7http://www.ncforestry.org/WEBPAGES/CLASSROOM%20ACTIVITIES/flash_cards.htm http://www.foodnavigator.com/Legislation/Green-light-for-cellulose-gum-on-food-labels