Comparative study of traditional and lab-scale roasting method for unpeeled robusta coffee in Bromo-Tengger-Semeru mountain slope regions

Kiki Fibrianto, Onky Audika Ferrasta, Igoy Arya Bimo

Abstract


Traditionally, Robusta coffee is predominantly processed using the natural method. However, in certain regions, Robusta green beans are produced without removing their outer skin (pericarp) throughout the entire processing stages. This distinctive method is aimed at increasing yield, making the coffee more affordable for a broader consumer base. This study investigated the traditional production practices of Robusta coffee in three regions within the Bromo-Tengger-Semeru Mountains protected area: Benjor and Jabung in Malang Regency, and Wonorejo in Pasuruan Regency. The entire traditional green bean production process in these regions was observed and documented. Additionally, the roasting methods traditionally employed by farmers were compared to lab-scale medium-to-dark controlled roasting processes. A completely randomized block design was employed to evaluate the physical, chemical, and sensory quality of unpeeled Robusta coffee from Benjor, Jabung, and Wonorejo. The sensory quality was assessed using the Specialty Coffee Association of America (SCAA) official cupping test. The results showed that traditional practices in Benjor and Jabung produced coffee with a cupping score above 70, meeting the standards for good commodity-grade coffee. Interestingly, the coffee from Wonorejo, which initially had a lower sensory score, reached a comparable quality level when roasted under controlled lab-scale conditions. Gas chromatography-mass spectrometry (GC-MS) analysis further confirmed that lab-scale roasting enhanced sweet flavor notes compared to traditional farmer practices in Wonorejo.


Keywords


Coffee beans; Cupping; Roasting; Sensory quality; Unpeeled coffee

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Angeloni, S., Mustafa, A. M., Abouelenein, D., Alessandroni, L., Acquaticci, L., Nzekoue, F. K., Petrelli, R., Sagratini, G., Vittori, S., Torregiani, E., and Caprioli, G. (2021) ‘Characterization of the aroma profile and main key odorants of espresso coffee’, Molecules, 26(13), pp. 1-29

Apsari, C. N., Ujiantari, N. S. O., Rohmah, Z., Utami, S. T., Suma, A. A. T., and Gusnaniar, N. (2024) ‘Commercial incense: Compound analysis and its molecular docking studies as anxiolytic agents’, Biology, Medicine, & Natural Product Chemistry, 13(1), pp. 239-250

Arenas, A. F., Hincapie, A. M. V., and Ocampo, G. T. (2022) ‘Effects of post-harvest process on volatile-sensory profile for coffee in Colombia’, Coffee Science, 17, pp. 1-14

Aswathi, K. N., Shetiya, H., Premachandaran, M. S., Swasthika, P. Y., Yannam, S. K., and Murthy, P. S. (2024) ‘Robusta honey coffee drying techniques and identification of changes in the bioactives and volatiles based on SPME-GCMS and E-Nose’, Journal of Food Measurement and Characterization, 18, pp. 7550-7567

Ayseli, M, T., and Coskun, I. (2024) ‘Analyzing aroma-active compounds of traditional herbal coffee (Mirra) using the headspace-solid phase microextraction method combined with GC-MS/O’, Microchemical Journal, 205, pp. 1-9

Batista da Mota, M. C., Batitsta, N. N., Dias, D. R., Schwan, R. F. (2022) ‘Impact of microbial self-induced anaerobiosis fermentation (SIAF) on coffee quality’, Food Bioscience, 47, pp. 1-10

Bembibre, C., and Strlič, S. (2017) ‘Smell of heritage: A framework for the identification, analysis and archival of historic odours’, Heritage Science, 5(2), pp. 1-11

Bressanello, D., Liberto, E., Cordero, C., Rubiolo, P., Pellegrino, G., Ruosi, M. R., and Bicchi, C. (2017) ‘Coffee aroma: Chemometric comparison of the chemical information provided by three different samplings combined with GC-MS to describe the sensory properties in cup’, Food Chemistry, 214, pp. 218-226

Caporaso, N., Genovese, A., Canela, M. D., Civitella, A., and Sacchi, R. (2014) ‘Neapolitan coffee brew chemical analysis in comparison to espresso, moka and american brews’, Food Research International, 61, pp. 152-160

Caporaso, N., Whitworth, M. B., Cui, C., and Fisk, I. D. (2018) ‘Variability of single bean coffee volatile compounds of arabica and robusta roasted coffees analysed by SPME-GC-MS’, Food Research International, 108, pp. 628-640

Cardoso, W. S., Dias, S. R., Coelho, V. S., Pereira, L. L., Fiores, D. B., and Pinheiro, F. A. (2023) ‘Maillard reaction precursors and arabica coffee (Coffea arabica L.) beverage quality’, Food and Humanity, 1, pp. 1-7

CarolinaVieira-Porto, A., Cunha, S. C., Rosa, E. C., DePaula, J., Cruz, A. G., Freitas-Silva, O., Fernandes, J. O., and Farah, A. (2024) ‘Chemical composition and sensory profiling of coffees treated with asparaginase to decrease acrylamide formation during roasting’ Food Research International, 186, pp. 1-20

Chen, J., Yang, Y., Deng, Y., Liu, Z., Shen, S., Zhu, J., Yuan, H., and Jiang, Y. (2022) ‘Characterization of the key differential volatile components in different grades of dianhong congou tea infusions by the combination of sensory evaluation, comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry, and odor activity value’, LWT, 165, pp. 1-9

Crnjar, R., Paolo S., and Giorgia S. (2023) ‘The Human nose as a chemical sensor in the perception of coffee aroma: Individual variability’, Chemosensors, 11(4), pp. 1-15

Dybkowska, E., Sadowska, A., Rakowska, R., Dębowska, M. A., Świderski, F., Świąder, K. (2017) ‘Assessing polyphenols content and antioxidant activity in coffee beans according to origin and the degree of roasting’, Roczniki Państwowego Zakładu Higieny, 68(4), pp. 347-353

Debona, D. G., Louvem, R. F., Luz, J. M., R., Nariyoshi, Y. N., Castro, E. V. R., Oliveira, E. C. D. S., Guarçoni, R. C., de Castro, M. G., de Oliveira, G. F., Partelli., F. L, da Silva, M. C. S., Bellon, A. P., and Pereira, L. P. (2022) ‘Heat and mass transfer kinetics on the chemical and sensory quality of arabica coffee beans’, Agronomy, 12(11), pp. 1-13

Elhalis, H., Cox, J., Frank, D., and Zhao, Z. (2021) ‘Microbiological and biochemical performances of six yeast species as potential starter cultures for wet fermentation of coffee beans’, LWT, 137, pp. 1-8

Wang, R., Lu, Y., Wang, Y., Bai, C., Jiang, Y., Yuan, M., Zhao, L., and Chen, L. (2025) ‘Characterization of the flavor profile of four major chinese carps using HS-SPME-GC-MS combined with ultra-fasted gas chromatography-electronic nose’, Food Chemistry, 463, pp. 1-9

Fibrianto, K., Harijono, H., and Adnan, S. (2023) ‘Sensory characterization of unpeeled robusta coffee at different roasting temperature and time’, AFSSAAE, 6th International Conference on Green Agro-industry and Bioeconomy (ICGAB) July 2022 - Special Issue, pp. 113-122.

Freitas, V.V., Borges, L.L.R., Castro, G.A.D, dos Santos, M.H., Vidigal, M.C.T.R., Fernandes, S.A., Stringheta, P. C. (2023) ‘Impact of different roasting conditions on the chemical composition, antioxidant activities, and color of Coffea canephora and Coffea arabica L. samples’, Heliyon, 9(9), pp. 1-10

Freitas, V. V., Borges, L. L. R., Castro, G. A. D., Almeida, L. F., Crepalde, L. T., Kobi, H., Teixeira, M. C, Vidigal, R., dos Santos, M. H., Fernandes, S. A., Maitan-Alfenas, G. P., Paulo, Stringheta, C. (2024) ‘Influence of roasting levels on chemical composition and sensory quality of Arabica and Robusta coffee: A comparative study’, Food bioscience, 59, pp. 1-15

Gao, H., Liu, M., Zheng, L., Zhang, T., Chang, X., Liu, H., Zhou, S., Zhang, Z., Li, S., and Sun, J. (2023) ‘Comparative analysis of key odorants and aroma characteristics in hot-pressed yellow horn (Xanthoceras sorbifolia bunge) seed oil via gas chromatography-ion mobility spectrometry and gas chromatography-olfactory-mass spectometry’, Foods, 12(17), pp. 1-22

Guo, X., Ho, C. T., Wan, X., Zhu, H., Liu, Q., and Wen, Z. (2021) ‘Changes of volatiles compounds and odor profiles in wuyi rock tea during processing’, Food Chemistry, 341, pp. 1-11

Huang, J., Xao, L., Yi, Y., Li, B., Sun, R., and Deng, H. (2022) ‘preservation mechanism and flavor variation of postharvest button mushroom (Agaricus Bisporus) coated compounds of protocatechuic acid-CaCl2-NaCl-pullulan’, LWT, 169, pp. 1-14

Huang, Y., Zhang, Y., Qi, Y., Yu, Y., and Yu, W. (2019) ‘Identification of odorous constituents of bamboo during thermal treatment’, Construction and Building Materials, 203, pp. 104-110

Ihsan, B. R. P., Shalas, A. F., Elisabeth, Y., Claudia, L. M., and Putri, A. R. (2023) ‘Determination of caffeine in robusta coffee beans with different roasting method using UV-Vis spectrophotometry’, Food Research, 7(6), pp. 29-34

Ismail, B. B., Huang, R., Liu, D., Ye, X., and Guo. (2022) ‘Potential valorisation of baobab (Adansonia digitata) seeds as a coffee substitute: insights and comparisons on the effect of roasting on quality, sensory profiles, and characterisation of volatile aroma compounds by HS-SPME/GC-MS’, Food Chemistry, 394, pp. 1-11

Jin, Y., Bai, S., Huang, Z., You, L., and Zhang, T. (2022) ‘Technology characteristics and flavor changes of traditional green wheat product nian zhuan in Northern China’, Frontiers in Nutrition, 9, pp. 1-14

Gao, H., Liu, M., Zheng, L., Zhang, T., Chang, X., Liu, H., Zhou, S., Zhang, Z., Li, S., and Sun, J. (2023) ‘Comparative analysis of key odorants and aroma characteristics in hot-pressed yellow horn (Xanthoceras sorbifolia bunge) seed oil via gas chromatography-ion mobility spectrometry and gas chromatography-olfactory-mass spectometry’, Foods, 12(17), pp. 1-22

Lee, C.J. (2016) ‘A study of compound changes in coffee beans by different roasting condition’, Culinary Science & Hospitality Research, 22(6), pp. 114-119

Leela, V., and Raju, I. (2015) ‘Identification of volatile constituents from flowers of Acacia nilotica linn through GC-MS’, International Journal of Biological & Pharmaceutical Research, 6(2), pp. 105-109

Liu, R., Wang, C., Huang, A., and Lv, B. (2018) ‘Characterization of odors of wood by gas chromatography-olfactometry with removal of extractives as attempt to control indoor air quality’, Molecules, 23(1), pp. 1-10

McKay, M., Bauer, F. F., Panzeri, V., Mokwena, L., and Buica A. (2019) ‘Profiling potentially smoke tainted red wines: Volatile phenols and aroma attributes’, South African Journal of Enology and Viticulture. 40(2), pp. 221-236

Mei, S., Ding, J., and Chen, X. (2023) ‘Identification of differential volatile and non-volatile compounds in coffee leaves prepared from different tea processing steps using HS-SPME/GC-MS and HPLC-Orbitrap-MS/MS and investigation of the binding mechanism of key phytochemicals with olfactory and taste receptors using molecular docking’, Food Research International, 168, pp. 1-15

Miyazato, H., Nakamura, M., Hashimoto, S., and Hayashi, S. (2013) ‘Identification of the odour-active cylic diketone cis-2,6-dimethyl-1,4-cyclohexanedione in roasted arabica coffee brew’, Food Chemistry. 138, pp. 2346-2355

Muñoz, A. E., Hernández, S. S., Tolosa, A. R., Burillo, S. P., and Herrera, M. O. (2020) ‘Evaluation of differences in the antioxidant capacity and phenolic compounds of green and roasted coffee and their relationship with sensory properties’, LWT - Food Science and Technology, 128, pp. 1-9

Nzekoue, F. K., Alessandroni, L., Caprioli, G., Khamitova, G., Navarini, L., Ricciutelli, M., Sagratini, G., Sempere, A. N., and Vittori, S. (2021) ‘Analysis of phytosterols content in italian-standard espresso coffee’, Beverages, 7(3), pp. 1-12

Obando, A. M., and Figueroa, J. G. (2024) ‘Effect of roasting level on the development of key aroma-active compounds in coffee’, Molecules, 29(19), pp. 4723-4723

Oishi, M., Tanoue, Y., Kajiwara, Y., Takashita, H., and Okazaki, N. (2008) ‘Sensory attributes of furfural formed in barley-shochu making and its formation factors’, Journal of the Society of Brewing, Japan, 103(9), pp. 730-734

Pereira, P.V., da Silveira, D. L., Schwan, R. F., Silva, S. D. A., Coelho, J. M., and Bernardes, P. C. (2021) ‘Effect of altitude and terrain aspect on the chemical composition of Coffea canephora cherries and sensory characteristics of the beverage’, Journal of the Science of Food and Agriculture, 101(6), pp. 2570-2575

Prakash, I., Shankar SR., Sneha HP., Kumar, P., Om, H., Basavaraj K., and Murthy, P. S. (2022) ‘Metabolomics and volatile fingerprint of yeast fermented robusta coffee: A value added coffee’, LWT, 154, pp. 1-11

Ravichandran, C., Upadhyay, A., Khan, Z. A., Aggarwal, M., and Singh R. (2020) ‘Characterization of volatile compounds from processed pineapple waste by static headspace gas chromatography-mass spectrometry (SHS-GC-MS/MS)’, Journal of Postharvest Technology, 8(1), pp. 1-12

SCAA. (2015) SCAA Protocols: Cupping Specialty Coffee. United States: Specialty Coffee Association America.

Štefániková, J., Martišová, P., Šnirc, M., Kunca, V., and Árvay, J. (2021) ‘The effect of Amanita rubescens pers developmental stages on aroma profile’, Journal of Fungi, 7(8), pp. 1-15

Vélez, J. P. A., Tabarez, S. U., and Duran, N. P. (2024) ‘HS-SPME GC/MS volatile profile of the onion Allium fistulosum L. variety pereirana, cultivated in Colombia’, Revista Facultad Nacional de Agronomía Medellín, 77(1), pp. 10611-10624

Wagenstaller, M., and Buettner, B. (2014) ‘Coffee aroma constituents and odorant metabolites in human urine’, Metabolomics, 10(2), pp. 225-240

Wang, N., and Lim, L.T. (2012) ‘Fourier transform infrared and physicochemical analyses of roasted coffee’, Journal of Agricultural and Food Chemistry, 60(21), pp. 5446-5453

Wang, M. Q., Ma, W. J., Shi, J., Zhu, Y., Lin, Z., and Lv, H. P. (2020) ‘Characterization of the key aroma compounds in longjing tea using stir bar sorptive extraction (SBSE) combined with gas chromatography-olfactometry (GC-O), odor activity value (OAV), and aroma recombination’, Food Research International, 130, pp. 1-11

Xu, J. L., Kim, T. J., Kim, J. K., and Choi, Y. (2019) ‘Simultaneous roasting and extraction of green coffee beans by pressurized liquid extraction’, Food Chemistry, 281, pp. 261-268

Yuwono, S. S., Hanasasmita, N., Sunarharum, W. B., and Harijono. (2019) ‘Effect of different aroma extraction methods combined with GC-MS on the aroma profiles of coffee’, IOP Conference Series: Earth and Environmental Science, 230, pp. 1-7

Zakidou, P., Plati, F., Matsakidou, A., Varka, E. Maria., Blekas, G., and Paraskevopoulou, A. (2021) ‘Single origin coffee aroma: From optimized flavor protocols and coffee customization to instrumental volatile characterization and chemometrics’, Molecules, 26(15), pp. 1-17

Zapata, J., Londoño, V., Naranjo, M.., Osorio, J., López, C., Quintero, M. (2018) ‘Characterization of aroma compounds present in an industrial recovery concentrate of coffee flavour’, Cyta-journal of Food, 16(1), pp. 367-372

Zhang, Y., Yan, K., Peng, Q., Baldermann, S., Zhu, Y., Dai, W., Feng, S., Simal-Gandara, Fu, J., Lv, H., Lin, Z., and Shi, J. (2024) ‘Comprehensive analysis of pigment alterations and associated flavor development in strip and needle green teas’, Food Research International, 175, pp. 1-15




DOI: https://doi.org/10.21776/ub.afssaae.2024.007.04.5

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Copyright (c) 2024 Kiki Fibrianto, STP., M.Phil., Ph.D, Onky Audika Ferrasta, Igoy Arya Bimo

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