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. 2023 Aug 18;12(16):3107. doi: 10.3390/foods12163107

Table 2.

Changes in pH, total soluble solids (TSS), and total titratable acidity (TTA) in untreated (control), blanching, HPP (600 MPa for 3 min, 20 °C), and blanching combined with HP-treated carrot juice during 15 days of storage at 4 °C.

Quality Attributes Treatments Storage Time (Days)
0 3 6 9 12 15
pH Control 6.15 ± 0.10 aA* 6.23 ± 0.10 aA 5.91 ± 0.10 cB 5.82 ± 0.10 bC 4.37 ± 0.10 dD 4.27 ± 0.10 dE
Blanching 5.84 ± 0.10 cB 5.87 ± 0.10 cB 6.06 ± 0.10 bA 6.00 ± 0.13 aA 5.60 ± 0.07 cC 5.42 ± 0.10 cD
HPP 6.00 ± 0.10 bC 6.12 ± 0.10 bB 6.23 ± 0.05 aA 6.15 ± 0.15 aAB 6.17 ± 0.18 aAB 5.81 ± 0.10 bC
Blanching + HPP 5.59 ± 0.10 dD 5.76 ± 0.10 dC 5.94 ± 0.08 cAB 5.90 ± 0.10 bAB 5.84 ± 0.25 bBC 5.98 ± 0.20 aA
TSS
(°Brix)
Control 2.03 ± 0.10 aA 2.00 ± 0.10 aA 1.97 ± 0.10 aAB 1.83 ± 0.10 aB 1.23 ± 0.10 bC 1.23 ± 0.10 bC
Blanching 2.07 ± 0.12 aA 1.93 ± 0.10 abA 1.97 ± 0.10 aA 1.93 ± 0.10 aA 1.57 ± 0.10 aB 1.13 ± 0.10 bC
HPP 1.83 ± 0.10 bA 1.88 ± 0.10 bcA 1.93 ± 0.10 aA 1.83 ± 0.10 aA 1.63 ± 0.10 aB 1.60 ± 0.10 aB
Blanching + HPP 1.73 ± 0.10 b AB 1.82 ± 0.10 cAB 1.90 ± 0.10 aA 1.90 ± 0.10 aA 1.63 ± 0.10 aB 1.63 ± 0.10 aB
TTA
(%)
Control 0.027 ± 0.001 bE 0.025 ± 0.006 bE 0.043 ± 0.003 aD 0.058 ± 0.001 aC 0.150 ± 0.011 aB 0.162 ± 0.002 aA
Blanching 0.027 ± 0.001 bC 0.032 ± 0.002 aC 0.032 ± 0.003 aC 0.040 ± 0.002 bB 0.042 ± 0.001 bB 0.084 ± 0.001 bA
HPP 0.032 ± 0.001 aC 0.037 ± 0.002 aB 0.041 ± 0.003 aA 0.040 ± 0.002 bAB 0.038 ± 0.002 bB 0.039 ± 0.001 cAB
Blanching + HPP 0.028 ± 0.002 bC 0.037 ± 0.002 aB 0.046 ± 0.003 aA 0.041 ± 0.001 bAB 0.040 ± 0.001 bB 0.038 ± 0.001 cB

* All data were the means ± standard deviation of three replicates (n = 3). a–d: different letters in the same column indicate significant differences (p < 0.05); A–E: different letters in the same row indicate significant differences (p < 0.05).