Parameter

Plain grape RTS

Grape-purple grape blend

Grape-phalsa blend

1

2

1

2

1

2

°Brix

15

15

18

18

18

 

20

Acidity, % (as citric acid)

0.14

0.15

0.2

 

0.2

 

0.19

0.21

Quantity of juice, %

15

15

15

15

10

 

10

Proportion of blending (Sour grape juice : purple grape / phalsa fruit juices)

-

-

2:1

2:1

1:1

1:1


1 = plain, 2 = carbonated
Table 2: Optimized conditions for preparation of plain RTS, blended RTS beverages.