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All Journal Pelita Perkebunan
Yusianto Yusianto
Indonesian Coffee and Cocoa Research Institute
Agriculture, Biological Sciences & Forestry

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Relationship between caffeine content and flavor with light intensity of several coffee Robusta clones Novie Pranata Erdiansyah; Yusianto Yusianto
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 28 No 1 (2012)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v28i1.160

Abstract

Coffee is a refreshing beverage product and its price is determined by physical quality and flavor. An excellent coffee flavor is resulted only from qualified coffee beans, produced by well managed plantation. The objective of this experiment was to study the effect of sunlight intensity entering coffee farm on flavor profiles and caffeine content of Robusta coffee. The experiment was conducted at the field experimental Kaliwining Estate of Indonesian Coffee and Cocoa Research Institute (ICCRI) during 2009–2011. Treatments were Robusta coffee clones and sunlight intensity. Experimental design was split plot design with three replications. Robusta clones used were BP 409, BP 534, BP 936 and BP 939, planted in 2002. The sunligt intensity treatments were 100% (without shade tree), 50—60% (Leucaena leucocephala shade), and 20—30% (Hibiscus macrophyllus and Melia azedarach L. shades). Only red coffee cherries were harvested for flavor and caffeine analysis. Coffee cherries were washed, depulped and sundried until moisture content of less than 12%. The green coffee bean samples were roasted at medium level (Agtron Scale at 65#) for cupping test which involved five expert panelists by using ICCRI protocol. Caffeine content was determined by spectrophotometric method. The experiment result indicated that high sunlight intensity resulted in strong aroma of Robusta coffee, while good flavor coffee need medium light intensity. Cafein content had positive correlation with light intensity entering the coffee farm, whereas cafein content had no direct effect on Robusta coffee flavor.Key words: Coffea canephora, clone, sunlight intensity, flavor, caffeine. 
Turning design optimation for bulk cocoa fermentation process Yusianto Yusianto
Pelita Perkebunan (a Coffee and Cocoa Research Journal) Vol 6 No 2 (1990)
Publisher : Indonesian Coffee and Cocoa Research Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22302/iccri.jur.pelitaperkebunan.v6i2.369

Abstract

Pengadukan selama fermentasi diperlukan untuk sarana aerasi, mencegah pertumbuhan jamur dan meratakan proses fermentasi. Hasil percobaan ini menunjukkan bahwa 1, 2, 3, atau 4 kali pengadukan menghasilkan mutu biji kakao yang tidak berbeda nyata. Namun demikian, setelah dipertimbangkan dari beberapa aspek maka disimpulkan bahwa sekali pengadukan setelah 2 hari atau 3 hari fermentasi adalah yang terbaik dan efisien.
Co-Authors Novie Pranata Erdiansyah