Table 3. Changes in hardness (experiment by aging period)

Variables	IC (%)	Hardness (g)	Reduction rate (%)
PC (6w)	21.86	1,225.30
PC (26w)	18.77	1,127.28	8.00
PC (36w)	18.19	969.46	20.88
Remark		On the basis of IC	Compared to PC (6w)

IC, intact casein.