Table 1
Total soluble solids (TSS), glucose (G), fructose (F), total sugars (TS), non-sugar soluble solids (NSS), density (D), total acidity (TA) of apple cloudy juice (AJ), apple cloudy juice permeate (PAJ), apple cloudy juice retentate (RAJ), apple-beetroot cloudy juice (ABJ), apple-beetroot cloudy juice permeate (PABJ), and apple-beetroot cloudy juice retentate (RABJ), total colour difference (DE)
| AJ | PAJ | RAJ | ABJ | PABJ | RABJ | |
|---|---|---|---|---|---|---|
| TSS [°Brix] | 11.0±0.1c | 8.8±0.0 a | 9.2±0.1 b (0.66)† | 11.4±0.0 b | 8.6±0.0 a | 8.7±0.1 a (0.68) |
| G [g×100 g−1] | 2.1±0.1 c | 1.6±0.0 b | 1.8±0.1 b (0.68) | 1.6±0.0 b | 0.6±0.0 a | 0.6±0.0 a (0.84) |
| F [g×100 g−1] | 6.5±0.2 d | 5.2±0.1 c | 5.4±0.1 c (0.66) | 4.3±0.1 b | 3.4±0.1 a | 3.6±0.1 a (0.66) |
| TS [g×100 g−1] | 10.4±0.1 c | 8.2±0.1 b | 8.8±0.2 b(0.67) | 8.2±0.1 b | 5.6±0.1 a | 5.8±0.2 a (0.71) |
| NSS [%] | 0.6±0.0 b | 0.6±0.0 b | 0.4±0.0 a (0.58) | 3.2±0.0 d | 3.0±0.0 c | 2.9±0.0 c (0.69) |
| TA [g×100 g−1] | 0.41±0.0 c | 0.25±0.0 a | 0.37±0.0 b (0.74) | 0.40±0.0 b | 0.31±0.0 a | 0.33±0.0 a (0.67) |
| ΔE | - | 19.4 | 4.2 | - | 35.5 | 8.2 |
| D [g×mL−1] | 1.041±0.000c | 1.034±0.000a | 1.035±0.000b | 1.044±0.000c | 1.034±0.000a | 1.036±0.000b |
Figure 1
Colour parameters L (□), a* (
), b* (■) of apple cloudy juice (AJ), apple cloudy juice permeate (PAJ), apple cloudy juice retentate (RAJ), apple-beetroot cloudy juice (ABJ), apple-beetroot cloudy juice permeate (PABJ), apple-beetroot cloudy juice retentate (RABJ); a-c: the differences between mean values of colour parameters of apple cloudy juice and its UF products marked with different letter were statistically significant, for each parameter separately; A-C: the differences between mean values of apple-beetroot cloudy juice and its UF products marked with different letter were statistically significant, for each parameter separately.