Penentuan Kadar Protein Pada Susu Kental Manis Kemasan Dengan Menggunakan Metode Kjedahl

28

Lampiran 01 Kadar Protein
Kadar protein =

� −� ×�×

�×

Dimana :

,

×��× ,

×

%

V1 = Volume HCl 0,1 N untuk titrasi sampel
V2 = Volume HCl 0,1 N untuk titrasi blanko

N = Normalitas HCl 0,1 N
W = Berat sampel
Fp = Faktor pengenceran

Lampiran 02 Kadar Protein Sampel A
Sampel A
� −� ×�×

Kadar protein (1) =

=

,

− ,

,

× ,

= 2,78%

,

= 2,77%

− ,

�×

�×

�×

,

,

× ,

�×

�×

�×

×��× ,
× , × ,

� −� ×�×

Kadar protein (2) =

=

,

,
,

×��× ,
× , × ,

×

×

×

×

%

%

%

%

Universitas Sumatera Utara

29

Kadar protein (3) =

=

,

− ,

= 2,77%

,

� −� ×�×

× ,

,

�×

�×

�×

×��× ,

,

× , × ,

×

×

%

%

Lampiran 03 Kadar Protein Sampel B
Sampel B
Kadar protein (1) =

=

� −� ×�×

�×

,

,

− ,

,

= 1,71%

Kadar protein (2) =

=

� −� ×�×
,

�×

− ,

=
= 1,69 %

� −� ×�×
,

�×

− ,

× ,

,

�×

�×

×��× ,
,

= 1,85%

Kadar protein (3) =

×��× ,

,

× ,

�×

�×

×��× ,
,

× ,

�×

�×

×
,

×

%

× , × ,

%

,

× , × ,

×

%

,

× , × ,

×

%

×

%

×

%

Universitas Sumatera Utara

30

Lampiran 04 Kadar Protein Sampel C
Sampel C
Kadar protein (1) =

=

� −� ×�×
,

,

�×

− ,

,

= 3,56 %

Kadar protein (2) =

=

� −� ×�×
,

,

�×

− ,

=
= 3,55 %

� −� ×�×
,

�×

− ,

× ,

�×

�×

×��× ,
,

= 3,57 %

Kadar protein (3) =

×��× ,

,

× ,

�×

�×

×��× ,
,

× ,

�×

�×

×

,

×

%

× , × ,

%

,

× , × ,

×

%

,

× , × ,

×

%

×

%

×

%

Universitas Sumatera Utara