Added lactose concentration (%)

Titratable acidity

Time (days)

1

7

14

21

28

35

Control (0)

1.06^CDEF

1.14^B

1.28^A

1.27^A

1.30^A

1.31^A

One

1.05^DEF

1.11^BCD

1.31^A

1.27^A

1.29^A

1.25^A

Three

0.98^GH

1.05^CDEF

1.12^BC

1.13^B

1.11^BCDE

1.13^B

Five

0.88^I

0.97^H

1.04^FG

1.04^DEFG

1.04^EFG

1.02^FGH