Assessment of bacteria and fungi in food waste compost using hybrid dehydrated food waste associated with Effective Microorganisms (EM)

Abstract

Food waste is a significant global issue, leading to soil contamination and greenhouse gas emissions. To address this problem and reduce reliance on chemical fertilizers, composting food waste using Effective Microorganisms (EM) and dehydrated techniques has been explored. This study aims to comprehensively investigate the composting process at different stages using EM-related dehydrated food waste. Bacteria and fungi colonies were measured during early, premature, and mature stages of composting in two systems. The results showed varying trends in bacteria and fungi populations, with mesophilic bacteria dominating the early stage and thermophilic bacteria increasing in System 2 at the mature stage. Fungi colony counts decreased over time in both systems. Correlation analysis indicated a negative correlation between mesophilic bacteria and fungi with pH and temperature, while thermophilic bacteria and fungi in System 2 showed a positive correlation. Dehydrated food waste was found to enhance bacterial and fungal growth, promoting efficient composting under specific pH and temperature conditions. These findings highlight the potential of using dehydrated food waste and EM in sustainable waste management practices and agricultural applications, fostering a more resilient and ecofriendly future.