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. 2019 Jun 11;9:8440. doi: 10.1038/s41598-019-44886-w

Figure 2.

Figure 2

Physicochemical characteristics of the cold brew coffees: (a) pH and (b) total titratable acidity-TA (mg/g chlorogenic acid) under different grinding (coarse and medium), contact time (14 and 22 h) and type of specialty coffees (Hui: Huila and Nar: Nariño). Different letters indicate statistically significant differences (p < 0.05) among treatments.