Table 2.
Parameters | Fortified guava beverage formulations1 | ||||||
---|---|---|---|---|---|---|---|
Guava pulp (g) : Tomato puree (g) | |||||||
Pink guava pulp | Tomato puree | A (20:0) | B (18:2) | C (16:4) | D (14:6) | E (12:8) | |
Total soluble solids (°Brix) | 9.1 ± 0.10 | 12 ± 0.10 | 12.1a | 12.2a | 12.1a | 12.2a | 12.1a |
pH | 4.1 ± 0.12 | 3.5 ± 0.10 | 3.1a | 3.1a | 3.1a | 3.1a | 3.1a |
Acidity (g/100 g) | 0.40 ± 0.01 | 0.46 ± 0.01 | 0.29 ± 0.01a | 0.28 ± 0.01a | 0.3 ± 0.01b | 0.31 ± 0.01b | 0.27 ± 0.01a |
Reducing sugars (g/100 g) | 6.2 ± 0.30 | 6.3 ± 0.30 | 4.4 ± 0.08a | 4.5 ± 0.06a | 4.6 ± 0.07b | 4.8 ± 0.07c | 5.0 ± 0.09d |
Total sugars (g/100 g) | 7.7 ± 0.30 | 7.4 ± 0.30 | 11.6 ± 0.08b | 11.5 ± 0.07a | 11.8 ± 0.08b | 11.4 ± 0.08a | 11.3 ± 0.10a |
Ascorbic acid (mg/100 g) | 96.4 ± 2.10 | 18.75 ± 1.50 | 19.58 ± 0.15c | 18.09 ± 0.17c | 15.01 ± 0.13b | 12.75 ± 0.15a | 10.67 ± 0.12a |
Lycopene (μg/100 g) | 6900 ± 80 | 15500 ± 85 | 760 ± 15a | 1400 ± 18b | 1850 ± 20c | 1880 ± 20c | 2010 ± 25d |
Hunter colour Values2 | |||||||
L | 50.6 ± 0.42 | ND | 32.7 ± 0.05b | 32 ± 0.03b | 30.1 ± 0.02a | 30 ± 0.05a | 29.3 ± 0.02a |
a | 33.3 ± 0.91 | ND | 6.9 ± 0.02a | 7.1 ± 0.02a | 8.2 ± 0.04b | 8.6 ± 0.03b | 9.2 ± 0.04b |
b | 17.6 ± 0.57 | ND | 6.2 ± 0.05a | 7 ± 0.04a | 8. ± 0.04b | 9.7 ± 0.05c | 10.1 ± 0.04c |
a/b | 1.89 | ND | 1.12a | 1.01a | 1.01a | 0.89a | 0.90a |
Sensory quality2 | |||||||
Colour | ND | ND | 7.2 ± 0.04c | 7.5 ± 0.05c | 7.8 ± 0.05b | 8.3 ± 0.04a | 8.2 ± 0.05a |
Flavour | ND | ND | 8.5 ± 0.05a | 8.5 ± 0.04a | 8.3 ± 0.05a | 8.5 ± 0.03a | 7.2 ± 0.04b |
Taste | ND | ND | 8.2 ± 0.03b | 8.3 ± 0.05a | 8.4 ± 0.04a | 8.5 ± 0.05a | 6.8 ± 0.05c |
Overall Quality | ND | ND | 8.2 ± 0.04b | 8.2 ± 0.05b | 8.4 ± 0.05a | 8.5 ± 0.04a | 6.8 ± 0.05c |
Mean ± S.D (n = 3); 1 g of pink guava pulp and tomato puree used for the preparation of 100 g of beverage, Means in the rows with the same superscript are not significantly different (p 0.05) 2Mean ± S.D (n = 10) ; L = Lightness ; a = Redness ; b = Yellowness ; a/b = ratio of redness and yellowness ; ND = Not Done ; A,B,C,D,E are different ratio of guava and tomato puree