First Generation
- Corn
- Sugar Cane
- Sugar Beets
Second Generation
- Apples
- Avocado
- Bamboo
- Banana
- Cactus
- Canola
- Cassava
- Chicken Feathers
- Chitin and Chitosan
- Cotton
- CO2
- Elephant Grass / Miscanthus
- Eucalyptus
- Feces
- Fish Scales
- Food Waste
- Hair
- Hemp
- Lignin
- Mango
- Melon Rinds
- Milk
- Olive Pits
- Orange Peel
- Pineapple Peels
- Pine Needles
- Potato Waste
- Red Fruit
- Sawdust
- Sorghum
- Spider’s Silk
- Sunflowers
- Used Cooking Oils
- Waste Water
- Wild Grass
- Wine Grapes
- Wood Chips