The Effect of Temperature and Roasting Time on The Physical Properties of Arabica and Robusta Gayo Coffee Bean

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Published May 27, 2023
https://doi.org/10.55043/jaast.v7i2.75
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Vol. 7 No. 2 (2023): Journal of Applied Agricultural Science and Technology

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Elin Yusibani
Universitas Syiah Kuala Darussalam
Ikramullah ikramullah
Universitas Syiah Kuala Darussalam
Evi Yufita
Universitas Syiah Kuala Darussalam
Zulkarnain Jalil
Universitas Syiah Kuala Darussalam
Endi Suhendi
Universitas Pendidikan Indonesia

Abstract

The effect of variations in temperature and roasting time on the physical properties of coffee beans originating from the Gayo highlands with Arabica and Robusta types have been studied in this paper. Physical properties measured include weight loss, true density, porosity, and water content. The measurement procedure follows Standard Nasional Indonesia (SNI) 01-2907-2008. Three roasting levels were used in this study, i.e., Light Roast (159 -164 °C), Medium Roast (211 - 215 °C), and Dark Roast (above 232 °C) by an oven. The result showed that the weight loss for Arabica and Robusta coffee beans is from 11 - 19% and 14 - 29%, respectively. The true density for Arabica and Robusta coffee beans ranged from 0.905 - 1.085 g/cm3 and 0.950 - 1.156 g/cm3, respectively. The difference in porosity changes before and after roasting was 23 - 73% for Arabica and 33 - 68% for Robusta coffee beans. Meanwhile, the water content of Arabica and Robusta coffee beans after roasting is 0.7 - 5% and 0.6 - 6%, respectively. The value of the weight loss, true density, and water content of Arabica is lower than that of the Robusta coffee bean, while the porosity value of Arabica is higher than that of the Robusta coffee bean.

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Author Biographies

Elin Yusibani, Universitas Syiah Kuala Darussalam

Physics Department FMIPA

Ikramullah ikramullah, Universitas Syiah Kuala Darussalam

Physics Department FMIPA

Evi Yufita, Universitas Syiah Kuala Darussalam

Physics Department FMIPA

Zulkarnain Jalil, Universitas Syiah Kuala Darussalam

Physics Department FMIPA

Endi Suhendi, Universitas Pendidikan Indonesia

Physics Department FMIPA

How to Cite
Yusibani, E., ikramullah, I., Yufita, E., Jalil, Z., & Suhendi, E. (2023). The Effect of Temperature and Roasting Time on The Physical Properties of Arabica and Robusta Gayo Coffee Bean. Journal of Applied Agricultural Science and Technology, 7(2), 100-108. https://doi.org/10.55043/jaast.v7i2.75

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