VARIASI JARAK CELAH DAN KECEPATAN PUTAR TERHADAP KUALITAS HASIL PRODUKSI KOPI PADA MESIN PENGUPAS KULIT BUAH KOPI (PULPER)

Abstract

Coffee is one of comodity agriculture product, specially in plantation sector that important for state’s economy. The bigess coffee demand that tended to increase and the price of export coffee that going better, lead to increase of demand the production coffee. To anticipate the increasing of coffee demand, required an instrument that capable to process with good capacity and quality. One of the important processing stage is a pulping coffee. The aim of this research is to understand and study the work of coffees pulper with variation distance cylinder space and variation revolving speed, so we can get the optimal work, and clean and good peeling product. The method that use in this research is complete random design and analyzed with bifilar distance Duncan different test. From the analysis appears that the greatest total peeling is a group that using 12mm distance space and 2400 RPM revolving speed, produce 8,36 kg peeling. A group that produce the best efficient is a group that using 12mm distance space and 2200 RPM revolving speed, with efficiency 83.66%. Whereas at peeling quality, the biggest complete seed peeling product is in a group with 10mm distance space and 2000 RPM revolving speed, as big as 92%. At broken seed product, a group that produce the lowest broken seed is a group that using 12mm distance space and 2000 RPM revolving space, as bis as 14%. Whereas, a group that produce the lowest shell with seed is a group that using 10mm distance space and 2200 RPM revolving speed, as big as 6,15 and at seed with shell is group that using 10mm distance space and 2000RPM revolving speed, as big as 0,9. from all the group that have the best effectivity is goup with (10mm) distance space and (2000RPM) revolving speed with the value effectivity 74%.