In this study, the yeast strain Pichia kudriavzevii RB1 was used as an inoculum to accelerate organic
matter degradation of rabbit food with added organic acids, which was used as a model food waste for
composting. The RB1 strain rapidly degraded the organic acids present in the raw compost material, leading
to an increase in pH beyond the neutral level, within 2 days. Both mesophilic and thermophilic
bacteria proliferated faster in the compost with RB1 inoculation than in that without inoculation.
Although the yeast died with the increase in compost temperature, it affected the early stages of composting
prior to the thermophilic stage and accelerated the composting process by 2 days by eliminating
the initial lag phase seen in the growth of other microorganisms. Moreover, populations of Bacillus thermoamylovorans,
Bacillus foraminis, andBacillus coagulans became dominant during the thermophilic stages
of both composting with and without RB1 inoculation.
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