Isolasi Minyak Atsiri dari Sereh Merah (Andropogon citratus DC.) Segar dan Kering Serta Analisis Komponen Secara GC-MS
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2
1 4 3 6
2
5
C
Lampiran 6. Perhitungan penetapan kadar air simplisia sereh merah
b v
No. Berat sampel (g) Volume awal (ml) Volume akhir (ml)
5
5 % 99 , 5 % 98 ,
3 % 98 ,
5
98 ,
/ b v %
Kadar air rata-rata =
1
5 5 , 1 8 ,
/ % 98 , 100 5 % 010 ,
Kadar air III =
Kadar air = % 100 Berat sampel
1
5 2 , 1 5 ,
/ % 99 , 100 5 % 008 ,
b v
Kadar air II =
1
5 9 , 2 ,
/ % 98 , 100 5 % 013 ,
b v
Kadar air I =
Volume air
1. 5,013 0,9 1,2 2. 5,008 1,2 1,5 3. 5,010 1,5 1,8
Lampiran 7. Perhitungan penetapan kadar sari larut dalam air simplisia sereh
merah Berat cawan sari berat cawan kosong 100
Kadar sari larut air =
100 %
Berat sampel
20 No. Berat sampel (g) Berat cawan kosong (g) Berat cawan sari (g) 1 5,015 45,090 45,200 2 5,014 43,067 43,176 3 5,012 45,122 45,226
45,200 45 , 090 100
Kadar sari I =
b b
100 % 10 , 967 % / 5 , 015
20 43,176 43 , 067 100
Kadar sari II =
b b
100 % 10 , 869 % / 5 , 014
20 45,226 45 , 122 100
Kadar sari III =
b b
100 % 10 , 375 % / 5 , 012 20 10 , 967 %
10 , 869 % 10 , 375 %
Kadar sari larut air rata-rata = 10 , 737 % b / b
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Lampiran 8. Perhitungan penetapan kadar sari larut dalam etanol
Berat cawan sari berat cawan kosong 100
Kadar sari larut etanol = 100 %
Berat sampel
20 No. Berat sampel (g) Berat cawan kosong (g) Berat cawan sari (g) 1 5,019 45,106 45,211 2 5,006 46,333 46,432 3 5,010 45,205 45,296
45,211 45,106 100
b b
Kadar sari I = 100 % 10 , 460 % / 5 , 019
20 46,432 46,333 100
b b
Kadar sari II = 100 % 9 , 888 % / 5 , 006
20 45,296 45,205 100
b b
Kadar sari III = 100 % 9 , 081 % / 5 , 010
20 10 , 460 % 9 , 888 % 9 , 081 %
Kadar sari larut etanol rata-rata = 9 , 809 % b / b
3
Lampiran 9. Perhitungan penetapan kadar abu total simplisia sereh merah
/ % 32 , 100 4 % 010 ,
No. Berat sampel (g) Berat abu (g)
4
4 % 19 , 4 % 31 ,
3 % 32 ,
4
Kadar abu total rata-rata = b b / % 27 ,
2 087 ,
Kadar abu total III = b b
Kadar abu total = % 100 Berat sampel
2 0,085
/ % 19 , 100 4 % 025 ,
Kadar abu total II = b b
2 0,086
100 4 % 016 ,
Kadar abu total I = b b / % 31 ,
Berat abu
1. 2,016 0,086 2. 2,025 0,085 3. 2,010 0,087
Lampiran 10. Perhitungan penetapan kadar abu tidak larut asam simplisia
sereh merah No. Berat sampel (g) Berat abu (g)
1. 2,003 0,009 2. 2,005 0,008 3. 2,008 0,006
Berat abu Kadar abu tidak larut asam = 100 %
Berat sampel
0,009 Kadar abu I = b b
100 % , 44 % / 2 , 003
0,008 Kadar abu II = b b
100 % , 39 % / 2 , 005
, 006 Kadar abu III = b b
100 % , 34 % / 2 , 008
, 44 % , 39 % , 34 %
Kadar abu tidak larut asam rata-rata = , 39 % b / b
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Lampiran 11. Penetapan kadar minyak atsiri sereh merah
a. Kadar minyak atsiri sereh merah segar Sampel I : Berat sampel = 10,065 gram Volume minyak atsiri = 0,04 ml % Kadar minyak atsiri = x 100%
,
= x 100%
,
= 0,39% v/b Sampel II Berat sampel = 10,085 gram Volume minyak atsiri = 0,05 ml % Kadar minyak atsiri = x 100%
,
= x 100%
,
= 0,49% v/b Sampel III Berat sampel = 10,073 gram Volume minyak atsiri = 0,04 ml % Kadar minyak atsiri = x 100%
,
= x 100%
,
= 0,39% v/b , % , % , %
% Kadar minyak atsiri rata-rata= = 0,42% v/b b. Kadar minyak atsiri sereh merah kering Sampel I : Berat sampel = 10,054 gram Volume minyak atsiri = 0,05 ml % Kadar minyak atsiri = x 100%
,
= x 100%
,
= 0,49% v/b Sampel II Berat sampel = 10,070 gram Volume minyak atsiri = 0,06 ml % Kadar minyak atsiri = x 100%
,
= x 100%
,
= 0,59% v/b Sampel III Berat sampel = 10,042 gram Volume minyak atsiri = 0,08 ml % Kadar minyak atsiri = x 100%
,
= x 100%
,
= 0,79% v/b , % , % , %
% Kadar minyak atsiri rata-rata = = 0,62% v/b
Lampiran 12. Penetapan indeks bias minyak atsiri sereh merah
a. Indeks bias minyak atsiri sereh merah segar Sampel I = 1,456 Sampel II = 1,456 Sampel III =1,456
, , ,
Indeks bias rata-rata = = 1,456
b. Indeks bias minyak atsiri sereh merah kering Sampel I = 1,456 Sampel II = 1,456 Sampel III = 1,456
, , ,
Indeks bias rata-rata = = 1,456
H
2 O
- 3
CH C H
2
2
26
18
15 C
2 H
2 CH
2 CH
2
26
14
14 H
- 2 O CH
2
3 CH
15
14
18 CH
2 C
2 H
CH
2
2 CH
2
14
14
26
14 3.
- 3
CH
H
2 O C
2 H
4
28
15
18 C H CH
2
3
2
26
38
3 H
15
C
2 O
18
28 CH
2 H
2
2 CH
40
4
3 H
2 C
14 CH
2
3 CH
4 O
2 H
2 H
14 C
15
26 C
14 CH
60
26 CO
2
2
2 H
- CH
14
2
52 CH
4
14 C
2
2
14 C
15
2
CH
2 O
3 H
26 CH
18
2
14 CH