Influence of Altitude on Caffeine, 5-Caffeoylquinic Acid, and Nicotinic Acid Contents of Arabica Coffee Varieties

Table 3

Concentrations in mg/g of caffeine, 5-CQA, and nicotinic acid in green and roasted coffee varieties grown at different altitudes of Southwest Ethiopia (mean ± SD, n = 4).

Altitude, asl	Coffee variety	Caffeine		5-CQA		Nicotinic acid
		Green	Roasted	Green	Roasted	Green	Roasted
Gera; 1940–1960 m	74110	12.34 ± 0.08	17.22 ± 0.76	29.72 ± 0.71	11.48 ± 0.46	8.16 ± 0.04	7.92 ± 0.18
	7454	13.58 ± 0.15	16.92 ± 1.37	27.17 ± 0.38	8.56 ± 0.02	10.16 ± 0.75	8.76 ± 0.11
	7440	13.10 ± 0.45	14.49 ± 1.69	30.40 ± 1.44	8.77 ± 0.38	8.53 ± 0.45	8.44 ± 0.08
	74112	13.30 ± 0.77	13.93 ± 0.29	34.56 ± 2.09	12.59 ± 0.21	8.08 ± 0.16	7.98 ± 0.15
	Mean	13.08 ± 0.63	15.99 ± 2.19	31.50 ± 3.05	13.03 ± 3.36	8.73 ± 1.12	7.84 ± 0.69
Jimma; 1750–1775 m	74110	14.51 ± 0.08	18.62 ± 0.47	31.34 ± 1.67	13.16 ± 0.43	8.15 ± 0.19	7.74 ± 0.45
	7454	16.07 ± 0.58	17.72 ± 1.46	33.85 ± 2.26	15.25 ± 1.19	8.34 ± 1.57	7.98 ± 0.69
	7440	13.83 ± 0.54	16.55 ± 0.39	30.72 ± 0.64	12.51 ± 0.21	7.38 ± 0.96	7.23 ± 0.33
	74112	13.87 ± 0.53	14.21 ± 0.71	34.62 ± 0.07	13.61 ± 0.36	7.87 ± 0.49	6.66 ± 0.03
	Mean	14.48 ± 1.34	16.43 ± 1.58	33.15 ± 2.18	12.02 ± 2.49	7.91 ± 0.46	7.33 ± 0.67
Teppi; 1100–1200 m	74110	15.14 ± 0.39	20.28 ± 0.63	32.16 ± 2.11	14.82 ± 1.50	7.59 ± 0.68	7.55 ± 0.34
	7454	19.89 ± 0.29	20.88 ± 0.14	39.18 ± 0.24	15.27 ± 0.01	8.25 ± 0.27	6.34 ± 0.03
	7440	15.60 ± 0.96	20.54 ± 0.09	32.06 ± 1.76	16.21 ± 0.10	7.13 ± 0.53	7.36 ± 0.88
	74112	15.67 ± 0.33	19.21 ± 0.66	33.62 ± 0.88	14.19 ± 0.32	7.54 ± 0.71	6.55 ± 0.33
	Mean	16.42 ± 2.19	20.23 ± 0.04	33.23 ± 3.95	14.05 ± 1.31	7.63 ± 0.05	6.23 ± 0.83
Correlation coefficient (r)		−0.981	−0.990	−0.917	−0.727	0.845	0.997