**5. Zero-waste philosophy**

Biofabrication of cellulose for industrial purposes based on the kombucha microbial consortium is an elegant example of eco-friendly and zero-waste production. All substrates and side products may be reused and applied in diverse ways. Residues of bacterial cellulose can be used as animal food or in formation of protosoil in various types of agricultural innovative systems including aquaponics, hydroponics and urban gardens. KMC may be stored for many years without need of any type of intervention and can be reused for cultivation any time is needed. Very sour kombucha solution can be used as vinegar, balms, or disinfectants. *Komagataeibacter* cells, as a by-product of the BC production, may be used as antioxidants, to prevent skin dryness.
