Sintesis Pati Sitrat Dari Pati Talas (Colocasia Esculenta) Melalui Reaksi Esterifikasi Dengan Asam Sitrat

LAMPIRAN

Lampiran 1.Lampiran Perhitungan DerajatSubstitusi (DS)
1.

pH 3 (V = 23,6 mL)

175 100
×
2
1000
= (25 − 23,6) × 4,375 = 6,125
162 × 6,125
�� =
100 × 175 − (175 − 1) × 6,125
% ���������� = (25 − �) × (0,5) ×

=

992,25
= 0,06

17500 − 1065,75

2. pH 3,5 (V= 23,8 mL)

% ���������� = (25 − �) × (0,5) ×
�� =

=

175 100
×
2
1000

= (25 − 23,8) × 4,375 = 5,25

162 × 5,25
100 × 175 − (175 − 1) × 5,25
850,5
= 0,05

17500 − 913,5

3. pH 4 (V= 23 mL)

% ���������� = (25 − �) × (0,5) ×
�� =

=

175 100
×
1000
2

= (25 − 23) × 4,375 = 8,75

162 × 8,75
100 × 175 − (175 − 1) × 8.75
1417,5
= 0,08

17500 − 1522,5

4. pH 4,5 (V=23,6 mL)
% ���������� = (25 − �) × (0,5) ×
�� =

175 100
×
1000
2

= (25 − 23,6) × 4,37 = 6,125

162 × 6,125
100 × 175 − (175 − 1) × 6,125

=

992,25
= 0,06

17500 − 1065,75

5. pH 5 (V= 23,4 mL)

% ���������� = (25 − �) × (0,5) ×
�� =

=

175 100
×
1000
2

= (25 − 23,4) × 4,375 = 7

162 × 7
100 × 175 − (175 − 1) × 7
1134
= 0,07

17500 − 1218

Lampiran 2.Lampiran Perhitungan Kekuatan Swelling
1. 6 jam
% � �������� =

15,2401 − 15,2047
× 100%
2,0049

= 1,765 %

2. 12 jam
% � �������� =

15,2681 − 15,2047
× 100%
2,0049

= 3,1622 %

3. 24 jam
% � �������� =

15,2939 − 15,2047
× 100%
2,0049

= 4,4490 %

4. 36 jam
% � �������� =

15,3019 − 15,2047
× 100%
2,0049

= 4,8481 %

5. 72 jam

% � �������� =

15,3149 − 15,2047
× 100%
2,0049

= 5,4965 %

Lampiran3 .Pati Talas Hasil Isolasi

Lampiran4. Pati Sitrat Hasil Sintesis

Lampiran 5. Hasil SEM (Scanning Electron Microscopy) Pati Sitrat
Perbesaran 100x

Perbesaran 1500x

Perbesaran 250x

Lampiran 6. Gambar SEM Pati Talas Referensi (Hanan, 2010)