The feed consisted of mixed fruit-vegetable wastes were collected from a nearby traditional market in
Pontianak city (Flamboyan Market). The wastes were taken based on grab sampling method with a
composition of ± 80 % vegetable waste and ± 20% fruit wastes. The total waste weight was 160 kg and
mixed manually during the feeding. The feeding was carried out for two weeks. The starter using in this
research was an inoculum from cow rument and mixed with the wastes just before the digester was closed.
Chemical analysis of initial waste and bioreactors slurry was performed using standard methods.