Uji Potensi Jamur Selulotik Asal Batang Kelapa Sawit dalam Mendekomposisi Limbah Kulit Tanduk Kopi

Abstract

One of the activities to utilize waste produced during the processing of coffee plantation products such as coffee husks can be done through composting. Coffee husk waste is difficult to decompose because it contains lignin and cellulose so that decomposers are needed to accelerate the decomposition process of coffee husk waste. This research aims to determine cellulolytic fungi from oil palm trunks that have the potential to decompose coffee husk waste. The isolates used in this research came from fallen oil palm trunks which are the collection of the Soil Biology Laboratory, Faculty of Agriculture, University of North Sumatra with isolate codes BKS-TAG 1, BKS-TAG 2, BKS-TAG 3, BKS-TAG 4, BKS-TAG 5, BKS-TAG 6 and BKS-TAG 7. Composting was carried out for 90 days. The parameters measured in this study included water content, C/N ratio, temperature and total fungal population. This research used a completely randomized design with the treatment of administering several fungal isolates and was repeated 3 times. The results showed that the most potential fungal isolate in helping to accelerate the decomposition of coffee skin waste was the BKS-TAG 6 isolate with C-organic content of 53.50%, total N content of 1.15%, C/N ratio of 47.48, and water content of 71.64%. Without the administration of fungal isolates or controls, C-organic content of 53.06%, total N content of 0.98%, C/N ratio of 54.13, and water content of 57.67%.