Table 2. Change in average pH value^* of palm sugar milk coffee (PSMC) product during 12 weeks of storage period

Storage temperature (°C)	Storage period (weeks)
Storage temperature (°C)	0	1	2	3	4	5	6	7	8	9	10	11	12
20	6.58^1)gh2)	6.58^gh	6.58^gh	6.58^gh	6.57^fg	6.57^fg	6.57^fg	6.56^ef	6.56^ef	6.55^de	6.54^cd	6.54^cd	6.53^bc
30	6.58^gh	6.57^fg	6.57^fg	6.56^ef	6.57^fg	6.57^fg	6.57^fg	6.56^ef	6.55^de	6.54^cd	6.52^ab	6.52^ab	6.51^a

Mean value (n=2).
Means with different superscript letters (^a-h) in the rows are significantly different (p<0.05) by Duncan’s multiple range test h>g>f>e>d>c>b>a.