KARAKTERISTIK KOPI HIJAU ROBUSTA PADA BERBAGAI TINGKAT KEMATANGAN BIJI KOPI

TRYASTUTI, NELLY RIZKY and Yuliati, Kiki and Pratama, Filli (2017) KARAKTERISTIK KOPI HIJAU ROBUSTA PADA BERBAGAI TINGKAT KEMATANGAN BIJI KOPI. Undergraduate thesis, Sriwijaya University.

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Abstract

The objective of this research was to determine the effect of maturity of coffee beans and roasting on antioxidant activity in coffee beans. This experiment was conducted in the Chemical Laboratory of Agricultural Product at Department of Agricultural Technology, Faculty of Agricultural, Sriwijaya University, from April to July 2017. The experiment used a Factorial Randomized Block Design with two factors and each treatment was repeated three times. The first factor was maturity (A) consisting of three treatments (red, yellow and green coffee beans) and the second factor was the roasting (B) consisting of two treatments (light roasted 197oC for 5 minutes) and (not roasted 60oC for 1 hour). The parameters were physical characteristics (yield, and color), chemical characteristics (moisture contents, pH analysis, caffeine content, and antioxidant activity) and hedonic test (aroma, color, and taste). The results showed that the maturity of coffee beans had significant effect on moisture content, pH and caffeine content. Roasting had significant effect on color (L*, a*, and b*), moisture contents, pH analysis, caffeine content. The interaction of those factors had significant effect on color (a*, and b*), moisture contents, pH analysis, caffeine levels. Based on hedonic test, the best treatment was A1B1 (Red coffee beans, light roasting) with the characteristics of L* 45.07%, a* 12.07, b* 12,13, moisture content 2.44%, pH 6.60, caffeine content 2,17%, antioxidant activity 253.77 ppm (mg/mL), yield 58.67% and hedonic scores for aroma, color and taste were 3.36, 3.08, and 2.80, respectively.

Item Type:	Thesis (Undergraduate)
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1480-1496 Agricultural machinery. Farm machinery
Divisions:	05-Faculty of Agriculture > 41231-Agricultural Product Technology (S1)
Depositing User:	Mrs Sri Astuti
Date Deposited:	28 Nov 2019 06:32
Last Modified:	28 Nov 2019 06:32
URI:	http://repository.unsri.ac.id/id/eprint/19021

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