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ABSTRAK
JONSION PURBA : uji alat pengupas kulit kopi mekanis, dibimbing oleh SAIPUL BAHRI DAULAY dan ACHWIL PUTRA MUNIR.
Uji alat adalah salah satu proses pengolahan pertanian. Penelitian bertujuan untuk menguji kopi arabika yang sesuai untuk alat pengupas kulit kopi mekanis dengan menggunakan 3 daerah asal kopi terhadap kapasitas alat, persentase kerusakan kopi, persentase kopi yang tidak terkelupas, persentase biji kopi di saluran kulit dan persentase kulit disaluran biji. Dilakukan pada bulan September dan Oktober 2013 di Laboratorium Keteknikan Pertanian, Fakultas Pertanian, Universitas Sumatera Utara, Medan, dengan menggunakan metode rancangan acak lengkap (RAL) non factorial. Parameter yang diamati adalah kapasitas alat, persentase kopi yang tidak terkelupas, persentase kopi rusak persentase biji kopi disaluran kulit dan persentase kulit disaluran biji.
Hasil penelitian menunjukkan kapasitas alat sebesar 119,80 kg/jam, 157,00 kg/jam dan 160,86 kg/jam persentase kopi yang tidak terkelupas sebesar 16,50%, 6,83% dan 15,50% persentase kopi rusak 5,30%, 6,90% dan 7,90% persentase biji disaluran kulit 3,20%, 4,76% dan 4,96% perserentase kulit disaluran biji 2,93%, 2,50% dan 3,06%.
Kata kunci: kapasitas, alat pengupas mekanis, kulit kopi
ABSTRACT
JONSION PURBA : test of Mechanical Coffee Pulper Equipment, supervised by SAIPUL BAHRI DAULAY and ACHWIL PUTRA MUNIR.
Equipment test is one of agriculture processing. The research was aimed to test Arabica coffee wich is appropriate with Mechanical Coffee Pulper Equipment from 3 different origin places of coffee to equipment capacity, percentage of coffee damage, percentage of unpulped coffee, percentage of coffee bean in drain skin and percentage of skin in pipe bean. Conducted from September to October 2013 in Agriculture Engineering Laboratory. Agriculture Faculty, Sumatera Utara University, Medan, by using non-factorial completely randomized design (CRD). The parameters measured were equipment capacity, percentage of unpulped coffee, percentage of coffee damage, percentage of coffee bean in drain skin, and percentage of skin in pipe bean.
The results showed equipment capacity of 119,80 kg/hr, 157,00 kg/hr and 160,86 kg/hr. percentage of unpulped coffee of 16,50%, 6,83% and 15,50% percentage of coffee damage of 5,30%,6,90% and 7,90% percentage of coffee bean in drain skin of 3,20%, 4,76%, and 4,96% percentage of skin in pipe bean of 2,93%, 2,50%, and 3,06%.
Key word: capacity, mechanic pulper equipment, coffee skin
