Sensory Characteristics of Espresso Coffee According to Green Coffee Processing

생두 가공법에 따른 에스프레소 커피의 관능 특성

  • Choi, Yoo-Mei (Dept. of Culinary Science and Food Service Management, Graduate School of Kyung Hee University) ;
  • Yoon, Hye-Hyun (Dept. of Culinary Service Management, Kyung Hee University)
  • 최유미 (경희대학교 대학원 조리외식경영학과) ;
  • 윤혜현 (경희대학교 조리.서비스경영학과)
  • Published : 2011.12.30


Coffee beans are processed from coffee cherries by either natural, pulped natural, or washing. The aim of the present study was to evaluate the physiochemical and sensory characteristics of espresso coffees processed by different methods. The color of the washed coffee sample presented the highest value of lightness while the natural coffee sample presented the highest value of redness and yellowness. The biggest difference in brewed coffee, whether natural, pulped natural, or washed, was in the TDS content, which was higher in natural coffee and lower in washed coffee. Sensory descriptive analysis and acceptance test for espresso coffee using a 15 cm line scale were carried out by 12 trained panelists. Natural coffee had the highest cherry-like flavor and sweetness taste while washed coffee had the highest citrus flavor and acidity taste. An important attribute of espresso coffee is body, and natural coffee presented strong body while washed coffee presented a low body attribute. In conclusion, significant differences were observed among the three processing methods of green coffee. Pulped natural coffees presented intermediate physiochemical and sensory characteristics compared to washed and natural coffee. Natural coffees are appreciated for their increased body, and washed coffees are appreciated for added citrus flavors and acidity espresso coffee blends.


  1. 월간커피. 2010. 국내프랜차이즈 성장. pp. 23-26 In: 월간커피 5월호. (주)아이비라인. 서울
  2. Abreu LM, Silva CF, Batista HR, Dias ES, Schwan RF. 2008. Succession of bacterial and fungal communities during natural coffee (Coffea Arabica) fermentation. Food Microbiology 25(8):951-957
  3. BR Korea. Freshly Foasted in Korea. Available from: Accessed 2009
  4. Caffe Bene. Caffe Roasting Plant. Available from: Accessed 2010
  5. Choi YM, Yoon HH. 2010. Sensory charateristics of espresso coffee in relation to the classifcation of green arabica coffee. Korean J Food Cookery Sci 26(3): 300-306
  6. Feria-Morales A. M. 2002. Examining the case of green coffee to illustrate the limitations of grading systems/expert tasters in sensory evaluation for quality control. Food Qual Prefer. 13(6):355-367
  7. Gonzalez-Rios O, Suarez-Quiroz ML, Boulanger R, Barel M, Guyot B, Guiraud JP, Schorr-Galindo S. 2007. Impact of "ecological" post-harvest processing on the volatile fraction of coffee beans: I. Green coffee. Food Composition Analysis 20(s3-4):289-296
  8. ICO (International Coffee Organization). Vocabulary of Coffee. Available from: Accessed 2002
  9. ICO(International Coffee Organization). 2005. OTA risk management: Guidelines for green coffee buying. ISO 1939/05
  10. Illy A, Viani R. 2004. Espresso Coffee: The Science of Quality, Second Edition, Elsevier Academic press. San Diego, CA, USA. pp 91-108, 290-315
  11. Instaurator. 2008. The Espresso Quest. Loowedge Publishing. Australia. pp 78-83
  12. Luttinger N, Dicum G. 1999. The Coffee Book: Anatomy of an Industry from Crop to the Last Drop. New Press. New York. USA. pp 55-68
  13. Lingle TR. 2003. The Basics of Cupping Coffee. Specialty Coffee Association of America. Long Beach. California. pp 23
  14. Odello L, Odello C. 2002. Espresso Italiano Tasting. International Institute of Coffee Tasters. Centro Studi E Formazione Assaggiatori. pp 22-40
  15. SCAA. SCAA Protocols Cupping Specialty Coffee. Available from: Accessed November 21, 2009a
  16. SCAA. SCAA Protocols Grading Green Coffee. Available from: Accessed November 21, 2009b
  17. Schwan RF, Silva CF, Abreu LM, Dias ES, Batista LR. 2008. Succession of bacterial and fungal communities during natural coffee (Coffea arabica) fermentation. Food Microbiology 25(8):951-957
  18. Silva CF. 2000. Microbial diversity during maturation and natural processing of coffee cherries of Coffea arabica in Brazil. Food Microbiology 60(s2-3):251-260
  19. Yoon HH, Choi YM. 2009. Content of defective beans and cup quality in relation to the grade and processing methods of green coffee. Korean J. Food Cookery Sci 25(6):703-711

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