Perhitungan kadar air serbuk simplisia bunga pisang klutuk Perhitungan kadar sari larut dalam air Perhitungan kadar sari simplisia larut dalam etanol Perhitungan kadar abu total simplisia

49 Lampiran 6. Perhitungan pemeriksaan karakteristik serbuk simplisia bunga pisang klutuk

1. Perhitungan kadar air serbuk simplisia bunga pisang klutuk

Kadar air simplisia = 100 x g sampel berat mL air volume No. Berat sampel g Volume awal mL Volume akhir mL 1. 5,012 2,1 2,3 2. 5,015 2,3 2,5 3. 5,019 2,5 2,7 1. Kadar air = 2,3 – 2,1 5,012 x 100 = 3,99 2. Kadar air = 2,5 – 2,3 5,015 x 100 = 3,98 3. Kadar air = 2,7 – 2,5 5,019 x 100 = 3,98 Rata-rata kadar air = 3,99 + 3,98 + 3,98 3 = 3,98

2. Perhitungan kadar sari larut dalam air

Kadar sari larut air = Berat cawan sari – berat cawan kosong Berat sampel x 100 20 x 100 No. Berat sampel g Berat cawan kosong g Berat cawan sari g 1. 5,001 50,95 51,15 2. 5,002 51,20 51,40 3. 5,001 50,95 51,16 1. Kadar sari larut dalam air = 51,15 – 50,95 5,001 × 100 20 × 100 = 20, 00 2. Kadar sari larut dalam air = 51,40 – 51,20 5,002 × 100 20 × 100 = 20,00 3. Kadar sari larut dalam air = 51,16 – 50,95 5,001 × 100 20 × 100 = 21,00 Universitas Sumatera Utara 50 Lampiran 6. lanjutan Perhitungan pemeriksaan karakteristik serbuk simplisia bunga pisang klutuk Rata-rata kadar sari larut air = 20,00 + 20,00 + 21,00 3 = 20,33

4. Perhitungan kadar sari simplisia larut dalam etanol

kadar etanol = Berat cawan sari – berat cawan kosong Berat sampel × 100 20 × 100 No. Berat sampel g Berat cawan kosong g Berat cawan sari g 1. 5,001 50,95 51,10 2. 5,003 50,93 51,08 3. 5,002 50,95 51,11 1. Kadar sari larut etanol = 51,10 – 50,95 5,001 × 100 20 × 100 = 15,00 2. Kadar sari larut etanol = 51,08 – 50,93 5,003 × 100 20 × 100 = 15,00 3. Kadar sari larut etanol = 51,11 – 50,95 5,002 × 100 20 × 100 = 15,99 Rata-rata kadar sari larut etanol = 15,00 + 15,00 + 15,99 3 = 15,33

5. Perhitungan kadar abu total simplisia

Kadar abu = Berat krus porselen Abu – Berat krus porselen kosong Berat sampel × 100 No. Berat sampel g Berat krus porselin kosong Berat kurs porselin abu 1. 2,0001 41,24 41,35 2. 2,0001 42,80 42,92 3. 2,0002 41,20 41,33 1. Kadar abu total = 41,35 – 41,24 2,0001 × 100 = 5,5 2. Kadar abu total = 42,92 – 42,80 2,0001 × 100 = 6,00 Universitas Sumatera Utara 51 Lampiran 6. lanjutan Perhitungan pemeriksaan karakteristik serbuk simplisia bunga pisang klutuk 3. Kadar abu total = 41,33 – 41,20 2,0002 × 100 = 6,5 Rata-rata kadar abu total = 5,5 + 6,00 + 6,5 3 = 6,00

5. Perhitungan kadar abu simplisia tidak larut dalam asam