Before composting or performing anaerobic digestion of food waste, consider removing products that have commercial value.
Limonene in orange waste makes composting or anaerobic digestion difficult to achieve. Limonene extraction is easy and fast. Limonene oil is sought after on the market for its olfactory and antibacterial value.
Coffee grounds can contain up to 20% of oil that can be extracted before composting or anaerobic digestion. Coffee oil can be sold on the market and replace palm oil.
Pectin of apples or oranges
Plant pectin can be removed from apple or orange peels and scraps and resold on the market for applications in food and pharma.
Chitin and Chitosan of Crustaceans
Chitin can be recovered by an easy process from crustacean residues such as crabs or shrimp. Chitin and its derivative the Chitosan are a product of high value as they are used in the engineering of cartilage tissues.
Whey Protein and Lactose
Whey is a residue of cheese production. Protein and lactose can be removed and marketed as food supplements.
Ferulic acid from rice husks
The residues from rice production contain a high concentration of ferulic acid. The latter has a high commercial value on the market and can be marketed for applications in pharma and cosmetics.
Wood residues or coconut fiber are rich in lignin. The process is well known and makes it possible to produce vanilla from lignin, which can be sold on the market.
Fibers and starch from banana peels
Banana peels are rich in fiber, starch and banana flavours. These constituents can be extracted from the banana peel and sold on the market.