Table 2.

Values for total phenol content, titratable acidity, total soluble solids of coffee beans from C. arabica cv. Icatu collected at 25°C, and within the ranges of 30–35 and 36–40°C (diurnal temperatures).

		Diurnal temperature at bean harvest
Parameter	[CO2] (μL L-1)	25°C	30–35°C	36–40°C
Total phenol (mg GAE g-1 DW)	380	44.1 ± 1.8 aA	37.9 ± 1.0 bB	45.5 ± 2.8 aA
	700	35.8 ± 1.1 cB	49.4 ± 2.1 aA	42.0 ± 0.8 bA
Titratable acidity (mL NaOH 0.1 N g-1 DW)	380	1.95 ± 0.07 aA	2.00 ± 0.11 aA	2.09 ± 0.17 aB
	700	2.09 ± 0.10 bA	2.29 ± 0.08 abA	2.62 ± 0.07 aA
Total soluble solids (% DW)	380	34.5 ± 0.9 bA	38.4 ± 1.3 aA	37.6 ± 1.2 abA
	700	33.0 ± 1.2 aA	35.4 ± 0.5 aA	33.5 ± 0.8 aB

For each parameter, the mean values ± SE (n = 5, performing two replicates of five plants) followed by different statistical indexes express significant differences between temperatures for the same CO₂ treatment (a, b), or between CO₂ treatments within each temperature (A, B). Two-way ANOVA depicted significant changes for temperature, [CO₂], and their interaction for total phenol and acidity. For total soluble solids, significance was observed for temperature and [CO₂], but not for the interaction.