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. 2021 Oct 9;10(10):2393. doi: 10.3390/foods10102393

Table 2.

Chemical composition, pH, and acidity of yoghurt fortified with different concentration of rosemary extract (mean ± standard deviation) during storage (0, 7, and 14 days).

Treatment Storage (Days) Control T1 T2 T3 T4
Moisture (%) 0 89.42 ± 0.07 d 88.55 ± 0.07 cd 87.67 ± 0.07 bc 86.83 ± 0.07 ab 85.52 ± 0.07 a
7 89.13 ± 0.07 d 88.24 ± 0.07 cd 87.48 ± 0.07 cd 86.63 ± 0.07 ab 85.26 ± 0.07 a
14 88.27 ± 0.07 d 87.85 ± 0.07 cd 86.77 ± 0.07 cd 85.80 ± 0.07 ab 84.72 ± 0.07 a
Fat (%) 0 6.49 ± 0.07 d 6.54 ± 0.07 cd 6.60 ± 0.07 bc 6.70 ± 0.07 ab 6.77 ± 0.07 a
7 6.52 ± 0.07 d 6.56 ± 0.07 cd 6.65 ± 0.07 cd 6.73 ± 0.07 ab 6.79 ± 0.07 a
14 6.53 ± 0.07 d 6.57 ± 0.07 cd 6.67 ± 0.07 cd 6.75 ± 0.07 ab 6.82 ± 0.07 a
Protein (%) 0 4.35 ± 0.03 d 4.41 ± 0.03 cd 4.45 ± 0.03 bc 4.51 ± 0.03 ab 4.57 ± 0.03 a
7 4.37 ± 0.03 d 4.42 ± 0.03 cd 4.48 ± 0.03 bc 4.53 ± 0.03 ab 4.59 ± 0.03 a
14 4.39 ± 0.03 d 4.44 ± 0.03 cd 4.50 ± 0.03 bc 4.56 ± 0.03 ab 4.61 ± 0.03 a
Ash (%) 0 0.60 ± 0.04 d 0.64 ± 0.04 cd 0.69 ± 0.04 bc 0.73 ± 0.04 ab 0.79 ± 0.04 a
7 0.62 ± 0.04 d 0.65 ± 0.04 cd 0.71 ± 0.04 bc 0.75 ± 0.04 ab 0.81 ± 0.04 a
14 0.63 ± 0.04 d 0.67 ± 0.04 cd 0.72 ± 0.04 bc 0.77 ± 0.04 ab 0.82 ± 0.04 a
pH value 0 4.62 ± 0.02 a 4.63 ± 0.02 a 4.65 ± 0.02 a 4.70 ± 0.02 a 4.75 ± 0.02 a
7 4.58 ± 0.02 a 4.60 ± 0.02 a 4.62 ± 0.02 a 4.66 ± 0.02 a 4.70 ± 0.02 a
14 4.56 ± 0.02 a 4.59 ± 0.02 a 4.60 ± 0.02 a 4.62 ± 0.02 a 4.68 ± 0.02 a
Titration Acidity 0 0.9 ± 0.01 a 0.89 ± 0.01 a 0.86 ± 0.01 a 0.81 ± 0.01 a 0.75 ± 0.01 a
7 0.92 ± 0.01 a 0.91 ± 0.01 a 0.9 ± 0.01 a 0.86 ± 0.01 a 0.81 ± 0.01 a
14 0.94 ± 0.01 a 0.92 ± 0.01 a 0.91 ± 0.01 a 0.89 ± 0.01 a 0.83 ± 0.01 a

T1: yoghurt fortified with 1.5% of Rosmarinus officinalis L. aqueous extract. T2: yoghurt fortified with 2.0% of Rosmarinus officinalis L. aqueous extract. T3: yoghurt fortified with 2.5% of Rosmarinus officinalis L. aqueous extract. T4: yoghurt fortified with 3.0% of Rosmarinus officinalis L. aqueous extract. a–d Means with same superscripts across a row are not significantly different p > 0.05.