The document contains calculations and formulas for determining several parameters of plant extracts, including: 1) Moisture content or drying shrinkage, calculated as the weight difference before and after drying divided by the initial weight. 2) Ash content, calculated as the weight of residue after ignition divided by the initial weight. 3) Acid-insoluble ash content, calculated similarly using the weight of residue after ignition and treatment with acid. 4) Soluble solids content, calculated using weights before and after solvent extraction and evaporation, adjusted for solvent volumes. The document provides examples of these calculations and the parameters determined for a particular sample.

1. ANTONIUS PADUA RATU, M.FARM., APT.
STTIF BOGOR 2020
PERHITUNGAN PARAMETER
EKSTRAK

2. KADAR AIR/SUSUT PENGERINGAN
𝐾𝑎𝑑𝑎𝑟 𝐴𝑖𝑟 𝑆𝑢𝑠𝑢𝑡 𝑃𝑒𝑛𝑔𝑒𝑟𝑖𝑛𝑔𝑎𝑛
=
𝐴 − 𝐶 − (𝐵 − 𝐶)
(𝐴 − 𝐶)
𝑥 100%
A : Berat simplisia + cawan sebelum dikeringkan
B : Berat simplisia + cawan sesudah dikeringkan
C : Berat cawan kosong
A-C : 𝐵𝑒𝑟𝑎𝑡 𝑆𝑖𝑚𝑝𝑙𝑖𝑠𝑖𝑎 𝑠𝑒𝑏𝑒𝑙𝑢𝑚 𝑑𝑖𝑘𝑒𝑟𝑖𝑛𝑔𝑘𝑎𝑛
B-C : 𝐵𝑒𝑟𝑎𝑡 𝑆𝑖𝑚𝑝𝑙𝑖𝑠𝑖𝑎 𝑠𝑒𝑠𝑢𝑑𝑎𝑕 𝑑𝑖𝑘𝑒𝑟𝑖𝑛𝑔𝑘𝑎𝑛

3. 𝐾𝑎𝑑𝑎𝑟 𝐴𝑖𝑟 𝑆𝑢𝑠𝑢𝑡 𝑃𝑒𝑛𝑔𝑒𝑟𝑖𝑛𝑔𝑎𝑛 =
33,500−30,000 −(33,400−30,000)
33,500−30,000
𝑥 100%
=
3,500 −3,400
3,500
𝑥 100%
=
0,100
3,500
𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝐴𝑖𝑟 𝑆𝑢𝑠𝑢𝑡 𝑃𝑒𝑛𝑔𝑒𝑟𝑖𝑛𝑔𝑎𝑛 = 2,85%
Berat cawan
kosong (gram)
Berat cawan kosong + simplisia (gram)
Sebelum
pengeringan
Sesudah
pengeringan
30,000 33,500 33,400

4. KADAR ABU
𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 =
𝐵 − 𝐶
𝐴 − 𝐶
𝑥 100%
A : Berat simplisia+ krus sebelum dipijar
B : Berat Abu + krus sesudah dipijar
C: Berat krus kosong
A-C : 𝐵𝑒𝑟𝑎𝑡 𝑆𝑖𝑚𝑝𝑙𝑖𝑠𝑖𝑎 𝑠𝑒𝑏𝑒𝑙𝑢𝑚 𝑑𝑖𝑝𝑖𝑗𝑎𝑟
B-C : 𝐵𝑒𝑟𝑎𝑡 𝐴𝑏𝑢 𝑕𝑎𝑠𝑖𝑙 𝑝𝑖𝑗𝑎𝑟

5. 𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 =
25,500 − 25,000
31,000 − 25,000
𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 =
0,500
6,000
𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 = 8,33%
Berat krus
kosong (gram)
Berat krus kosong + simplisia (gram)
Sebelum
pemijaran
Sesudah
pemijaran
25,000 31,000 25,500

6. KADAR ABU TIDAK LARUT ASAM
𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 =
𝐵 − 𝐶
𝐴 − 𝐶
𝑥 100%
A : Berat simplisia+ krus sebelum dipijar
B : Berat Abu tidak larut asam + krus sesudah dipijar
C: Berat krus kosong
A-C : 𝐵𝑒𝑟𝑎𝑡 𝑆𝑖𝑚𝑝𝑙𝑖𝑠𝑖𝑎 𝑠𝑒𝑏𝑒𝑙𝑢𝑚 𝑑𝑖𝑝𝑖𝑗𝑎𝑟
B-C : 𝐵𝑒𝑟𝑎𝑡 𝐴𝑏𝑢 𝑡𝑖𝑑𝑎𝑘 𝑙𝑎𝑟𝑢𝑡 𝑎𝑠𝑎𝑚 𝑕𝑎𝑠𝑖𝑙 𝑝𝑖𝑗𝑎𝑟

7. 𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 𝑡𝑖𝑑𝑎𝑘 𝑙𝑎𝑟𝑢𝑡 𝑎𝑠𝑎𝑚
=
25,250 − 25,000
31,000 − 25,000
𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 𝑡𝑖𝑑𝑎𝑘 𝑙𝑎𝑟𝑢𝑡 𝑎𝑠𝑎𝑚 =
0,250
6,000
𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝐴𝑏𝑢 𝑡𝑖𝑑𝑎𝑘 𝑙𝑎𝑟𝑢𝑡 𝑎𝑠𝑎𝑚 = 4,17%
Berat krus
kosong (gram)
Berat krus kosong + simplisia (gram)
Sebelum
pemijaran
Sesudah
pemijaran
Sesudah
penambahan H2SO4
25,000 31,000 25,500 25,250

8. KADAR SARI LARUT
𝐾𝑎𝑑𝑎𝑟 𝑆𝑎𝑟𝑖 𝐿𝑎𝑟𝑢𝑡 =
(𝐵 − 𝐶)
𝐴
𝑥
𝑉1
𝑉2
𝑥 100%
A : Berat simplisia
B : Berat filtrat sesudah diuapkan + cawan kosong
C : Berat cawan kosong
B-C : 𝐵𝑒𝑟𝑎𝑡 𝑓𝑖𝑙𝑡𝑟𝑎𝑡 𝑑𝑖𝑢𝑎𝑝𝑘𝑎𝑛
𝑉1 ∶ 𝑉𝑜𝑙𝑢𝑚𝑒 𝑃𝑒𝑙𝑎𝑟𝑢𝑡 𝑆𝑖𝑚𝑝𝑙𝑖𝑠𝑖𝑎
𝑉2 ∶ 𝑉𝑜𝑙𝑢𝑚𝑒 𝐹𝑖𝑙𝑡𝑟𝑎𝑡 𝑦𝑎𝑛𝑔 𝑑𝑖𝑢𝑎𝑝𝑘𝑎𝑛

9. 𝐾𝑎𝑑𝑎𝑟 𝑆𝑎𝑟𝑖 𝐿𝑎𝑟𝑢𝑡 𝑑𝑎𝑙𝑎𝑚 𝐴𝑖𝑟 − 𝐾𝑙𝑜𝑟𝑜𝑓𝑜𝑟𝑚
=
(35,150 − 35,000)
5,00
𝑥
100
25
𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝑆𝑎𝑟𝑖 𝐿𝑎𝑟𝑢𝑡 𝑑𝑎𝑙𝑎𝑚 𝐴𝑖𝑟 − 𝐾𝑙𝑜𝑟𝑜𝑓𝑜𝑟𝑚
=
0,150
5,000
𝑥 4 𝑥 100%
𝐾𝑎𝑑𝑎𝑟 𝑆𝑎𝑟𝑖 𝐿𝑎𝑟𝑢𝑡 𝑑𝑎𝑙𝑎𝑚 𝐴𝑖𝑟 − 𝐾𝑙𝑜𝑟𝑜𝑓𝑜𝑟𝑚 = 12%
Berat
simplisia
(gram)
Volume Air-
Kloroform (ml)
Volume Filtrat
diuapkan (ml)
Berat cawan
kosong (gram)
Berat cawan kosong
+ filtrat hasil
pengaupan (gram)
5,000 100 25 35,000 35,150

10. TERIMA KASIH