The coffee of Arabica Kintamani is one of the most popular coffees in the world due to its specific taste. The quality of coffee beans depends on the post-harvest and processing method. Dry processing and wet processing are the most popular methods used and each process produces different quality coffee beans. The objective of this research was to study and analyze various processing methods of coffee beans and to determine the best processing method to apply by the farmers and processors. This research consisted of three processing methods for the coffee namely dried processing (natural); wet processing; and semi-wet processing (honey). The research used a randomized complete design with one factor and five replications. The study showed that dry processing (natural) produced good quality coffee beans compared with wet or semi-wet processing, with significantly higher polyphenols content of 40.80 ± 0.053 mg GAE g−1 , approximately the same caffeine content (1.19 ± 0.016 %), significantly higher antioxidant activity (% DPPH) 89.53 ± 0.229 % with an EC50 equal to 102.44 ± 0.130 mg L−1 , similar lightness 13.63 ± 8.281 and a significantly lower moisture content of 7.54 ± 0.474 %. This indicated that dry processing could be used as an alternative processing method by farmers and processors due to it being easier, cheaper, with more efficient water use as well as giving a product contained the highest levels of polyphenols and antioxidant activity that are good for human health.
Affonso R, Voytena A, Fanan S, Pitz H, Coelho D, Horstmann A, et al. Phytochemical Composition, Antioxidant Activity, and the Effect of the Aqueous Extract of Coffee ( Coffea arabica L.) Bean Residual Press Cake on the Skin Wound Healing. Oxidative Medicine and Cellular Longevity. 2016;1–10.
2.
Ahmed S, Brinkley S, Smith E, Sela A, Theisen M, Thibodeau C, et al. Climate Change and Coffee Quality: Systematic Review on the Effects of Environmental and Management Variation on Secondary Metabolites and Sensory Attributes of Coffea arabica and Coffea canephora. Frontiers in Plant Science. 2021;1–20.
3.
Avila O, Montero Fernández I, Da Costa H, Santos R, Ribeiro P, Melo V, et al. Phytometal Availability, Evaluation of Antioxidant Activity and Total Phenolic Compounds of Genipa americana L. (Rubiaceae) Fruits. Journal of Agricultural Science. 2018;(5):5–150.
4.
Awwad S, Issa R, Alnsour L, Albals D, Al-Momani I. Quantification of Caffeine and Chlorogenic Acid in Green and Roasted Coffee Samples Using HPLC-DAD and Evaluation of the Effect of Degree of Roasting on Their Levels. Molecules. 2021;(24):7502.
5.
Azuan A, Mohd Zin Z, Hasmadi M, Rusli N, Zainol M. Physicochemical, antioxidant and sensory characteristics of cookies supplemented with different levels of spent coffee ground extract. Food Research. 2020;(4):1181–90.
6.
Standar B, Nasional. 2008;
7.
Duguma H, Chewaka M. Review on Coffee (Coffea arabica L.) Wet Processing more Focus in Ethiopia. Acta Scientific Agriculture. 2019;(11):11–5.
8.
Faria T, Reis M, Schmidt V, Cardoso V. Influence of extraction methods on phenolic compounds from pulp and peel of genipap. Genipa americana L) fruit International Journal of Food Studies. 2022;38–50.
9.
10.
Happyana N, Pratiwi A, Hakim E. Metabolite Profiles of the Green Beans of Indonesian Arabica Coffee Varieties. International Journal of Food Science. 2021;1–9.
11.
Hatiningsih S, Antara N, Gunam I. Microbiological And Physicochemical Changes Of Green Coffee (Coffea Arabica) Fermentation In Kintamani. Media Ilmiah Teknologi Pangan. 2018;(2):123–38.
12.
ICO Coffee Development Report. 2019;
13.
Jeon JS, Kim HT, Jeong IH, Hong SR, Oh MS, Yoon MH, et al. Contents of chlorogenic acids and caffeine in various coffee-related products. Journal of Advanced Research. 2019;85–94.
14.
Kurang R, Kamengon R. Phytochemical Test and Antioxidant Activity of Methanol Extract in Arabica Coffee Leaves by Using DPPH Method (1,1-Diphenyl-2-Picrylhydrazyl). Walisongo Journal of Chemistry. 2021;(2):113–8.
15.
Kwak H, Jeong Y, Kim M. Effect of Yeast Fermentation of Green Coffee Beans on Antioxidant Activity and Consumer Acceptability. Journal of Food Quality. 2018;1–8.
16.
Kyaw E, Budiastra I, Sutrisno, Samsudin. Estimation of moisture content in Liberica coffee by using near infrared spectroscopy. IOP Conference Series: Earth and Environmental Science. 2020;(1):12013.
17.
Mangku I, Wijaya I, Putra G, Permana D. The Bioactive Compounds Formation of “Kintamani” Arabica Coffee Bean during Dry Fermentation. Journal of Biological and Chemical Research. 2019;(2):45–52.
18.
Mehari B, Chandravanshi B, Redi-Abshiro M, Combrinck S, Mccrindle R, Atlabachew M. Polyphenol contents of green coffee beans from different regions of Ethiopia. International Journal of Food Properties. 2021;(1):17–27.
19.
Rodriguez Y, Guzman N, Hernandez J. Effect of the postharvest processing method on the biochemical composition and sensory analysis of arabica coffee. Engenharia Agrícola. 2020;(2):177–83.
20.
Ijfs October. 2022;374–85.
21.
Processing methods on the quality of Arabica coffee 385 1590/1809-4430-eng.agric. 2020;2–177.
22.
Rosita R, Budiastra I, Sutrisno. Prediksi Kandungan Kafein Biji Kopi Arabika Gayo dengan Near Infrared Spectroscopy. Jurnal Keteknikan Pertanian. 2016;(2):179–97.
23.
Samantha R, Almalik D. Analisis aktivitas antioksidan dengan metode dpph serta tingkat penerimaan kopi arabika koya asrul. TjyybjbAcCn. 2019;(2):58–66.
24.
Shao J, Zhang Y. Determination of caffeine content in tea beverages. IOP Conference Series: Earth and Environmental Science. 2019;(4):42056.
25.
Sulistyaningtyas A. Pentingnya Pengolahan basah (Wet Processing) Buah kopi Robusta (Coffea var. robusta) untuk menurunkan resiko kecacatan biji hijau saat coffe grading. Jurnal Ilmu Keperawatan Dan Kesehatan. 2017;(6):90–4.
26.
Tadesse F, Jemal Y, Abebe H. Effect of Green Coffee Processing Methods and Roasting Temperatures on Physical and Cup Quality of Sidama Coffee, Southern Ethiopia. Journal of Nutritional Ecology and Food Research. 2016;(1):44–50.
27.
Tarigan E, Towaha J. Pengaruh tingkat kematangan buah, serta lama fermentasi dan penyangraian biji terhadap karakter fisikokimia kopi Robusta. Jurnal Tanaman Industri dan Penyegar. 2017;(3):163–70.
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