EFFECTS OF DIFFERENT ROASTING PARAMETERS ON SELECTED PHYSICOCHEMICAL PROPERTIES AND SENSORY EVALUATION OF COFFEE BEANS
Keywords:
Coffee beans, roasting, physicochemical, sensory evaluation, furanAbstract
Arabica coffee beans from the same origin were roasted at three different roasting parameters namely minimum roasting (180°C), medium roasting (220°C) and maximum roasting (260°C) each for 20 minutes in order to investigate the changes in the physical, chemical and sensorial evaluation. During the roasting process, the coffee beans becomes more brittle due to the chemical, physical and structural modifications. There are limited studies reported for coffee beans that have been roasted with different roasting parameters in term of selected physicochemical properties and sensory evaluation. The roasted coffee beans oil was extracted by using Soxhlet Extraction method for 8 hours. The objective of this study was to determine the effects of different roasting parameters on selected physicochemical properties and sensory evaluation of coffee beans in the term of: moisture content (%), oil extraction (%), peroxide value (mEq/kg), acid value (mg KOH/g), furan (absorbance) and sensory evaluation. The furan (abs) content was recorded as 0.24 0.04 (minimum roasting), 0.69 0.03 (medium roasting) and 0.91 0.01 (maximum roasting). In terms of sensory evaluation, most participants preferred coffee drink made from medium roasted coffee beans for aroma, colour, sweetness, flavour and overall criteria. Meanwhile, for the acidity and bitterness criteria, the participants preferred coffee drink made from maximum roasted coffee beans. As a conclusion, roasting temperature is the main factor that influences the physicochemical properties and sensory evaluation of coffee beans.
References
Afolayan, M., Fausat, A., & Idowu, D. (2014). Extraction and physicochemical analysis of some selected seed oils. International Journal of Advanced Chemistry, 2, 70-73. https://doi.org/10.14419/ijac.v2i2.2203
Al-Hamamre, Z., Foerster, S., Hartmann, F., Kröger, M., & Kaltschmitt, M. (2012). Oil extracted from spent coffee grounds as a renewable source for fatty acid methyl ester manufacturing. Fuel, 96, 70-76. https://doi.org/10.1016/j.fuel.2012.01.023
Casas, M. I., Vaughan, M. J., Bonello, P., McSpadden Gardener, B., Grotewold, E., & Alonso, A. P. (2017). Identification of biochemical features of defective Coffea arabica L. beans. Food Research International, 95, 59–67. https://doi.org/10.1016/j.foodres.2017.02.015
Cesa, S., Casadei, M. A., Cerreto, F., & Paolicelli, P. (2012). Influence of fat extraction methods on the peroxide value in infant formulas. Food Research International, 48, 584-591. https://doi.org/10.1016/j.foodres.2012.06.002
Chai, K. F., Chang, L. S., Adzahan, N. M., Karim, R., Rukayadi, Y., & Ghazali, H. M. (2019). Physicochemical properties and toxicity of cocoa powder-like product from roasted seeds of fermented rambutan (Nephelium lappaceum L.) fruit. Food Chemistry, 271, 298-308. https://doi.org/10.1016/j.foodchem.2018.07.155
Cho, J. S., Bae, H. J., Cho, B. K., & Moon, K. D. (2017). Qualitative properties of roasting defect beans and development of its classification methods by hyperspectral imaging technology. Food Chemistry, 220, 505-509. https://doi.org/10.1016/j.foodchem.2016.09.189
Cristovam, E., Russell, C., Paterson, A., & Reid, E. (2000). Gender preference in hedonic ratings for espresso and espresso-milk coffees. Food Quality and Preference, 11, 437-444. https://doi.org/10.1016/S0950-3293(00)00015-X
Dong, W., Zhao, J., Hu, R., Dong, Y., & Tan, L. (2017). Differentiation of Chinese robusta coffees according to species, using a combined electronic nose and tongue, with the aid of chemometrics. Food Chemistry, 229, 743-751. https://doi.org/10.1016/j.foodchem.2017.02.149
Durmaz, G., & Gökmen, V. (2010). Determination of 5-hydroxymethyl-2-furfural and 2-furfural in oils as indicators of heat pre-treatment. Food Chemistry, 123(3), 912–916. https://doi.org/10.1016/j.foodchem.2010.05.001
Ebrahimi-Najafabadi, H., Leardi, R., Oliveri, P., Chiara Casolino, M., Jalali-Heravi, M., & Lanteri, S. (2012). Detection of addition of barley to coffee using near infrared spectroscopy and chemometric techniques. Talanta, 99, 175-179. https://doi.org/10.1016/j.talanta.2012.05.036
European Food Safety Authority [EFSA]. (2011). Update on furan levels in food from monitoring years 2004-2010 and exposure assesment. EFSA Journal, 9(9), 2347–2380.
Frauendorfer, F., & Schieberle, P. (2008). Changes in key aroma compounds of Criollo cocoa beans during roasting. Journal of Agricultural and Food Chemistry, 56, 10244-10251. https://doi.org/10.1021/jf802098f
Giacalone, D., Degn, T. K., Yang, N., Liu, C., Fisk, I., & Münchow, M. (2019). Common roasting defects in coffee: Aroma composition, sensory characterization and consumer perception. Food Quality and Preference, 71, 463-474. https://doi.org/10.1016/j.foodqual.2018.03.009
Hayes, J. E., Wallace, M. R., Knopik, V. S., Herbstman, D. M., Bartoshuk, L. M., & Duffy, V. B. (2011). Allelic variation in TAS2R bitter receptor genes associates with variation in sensations from and ingestive behaviors toward common bitter beverages in adults. Chemical Senses, 36, 311-319. https://doi.org/10.1093/chemse/bjq132
Idrus, N. F. M., Zzaman, W., Yang, T. A., Easa, A. M., Sharifudin, M. S., Noorakmar, B. W., & Jahurul, M. H. A. (2017). Effect of superheated-steam roasting on physicochemical properties of peanut (Arachis hypogea) oil. Food Science and Biotechnology, 26, 911-920. https://doi.org/10.1007/s10068-017-0132-0
Kaleem, A., Aziz, S., Iqtedar, M., Abdullah, R., Aftab, M., Rashid, F., . Naz, S. (2015). Investigating Changes and Effect of Peroxide Values in Cooking Oils Subject To Light and Heat. FUUAST J. BIOL, 5, 191-196.
Liu, C., Yang, Q., Linforth, R., Fisk, I. D., & Yang, N. (2019). Modifying Robusta co ff ee aroma by green bean chemical pre-treatment. Food Chemistry, 272, 251–257. https://doi.org/10.1016/j.foodchem.2018.07.226
Nor Amna A’liah Mohammad Nor and Mohd Amirul Mukim in Abd Wahab. (2016). Exploring the Potential of Coffee Industry in Malaysia. http://ap.fftc.agnet.org/ap_db.php?id=574. [Access online 24th December 2018].
Romano, R., Santini, A., Le Grottaglie, L., Manzo, N., Visconti, A., & Ritieni, A. (2014). Identification markers based on fatty acid composition to differentiate between roasted Arabica and Canephora (Robusta) coffee varieties in mixtures. Journal of Food Composition and Analysis, 35(1), 1–9. https://doi.org/10.1016/j.jfca.2014.04.001
Santos, J. R., Lopo, M., Rangel, A. O. S. S., & Lopes, J. A. (2016). Exploiting near infrared spectroscopy as an analytical tool for on-line monitoring of acidity during coffee roasting. Food Control, 60, 408-415. https://doi.org/10.1016/j.foodcont.2015.08.007
Wang, X., & Lim, L. T. (2015). Physicochemical Characteristics of Roasted Coffee. In Coffee in Health and Disease Prevention, 247-254. https://doi.org/10.1016/B978-0-12-409517-5.00027-9
Yang, N., Liu, C., Liu, X., Degn, T. K., Munchow, M., & Fisk, I. (2016). Determination of volatile marker compounds of common coffee roast defects. Food Chemistry, 211, 206-214. https://doi.org/10.1016/j.foodchem.2016.04.124
Zanin, R. C., Corso, M. P., Kitzberger, C. S. G., Scholz, M. B. dos S., & Benassi, M. de T. (2016). Good cup quality roasted coffees show wide variation in chlorogenic acids content. LWT, 74, 480-483. https://doi.org/10.1016/j.lwt.2016.08.012
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