Cellulose

Cellulose is a carbohydrate that forms the primary building matter of plants.

Some cellulose remained in the soil on Melona IV after the Crystalline Entity had devastated the planet. 

When Neelix was having trouble with a replicator in the mess hall, he noted to Samantha Wildman that it was having trouble replicating anything with a high level of cellulose, turning food too yellow.