6
PENETAPAN KADAR KALIUM DALAM DAUN SEGAR,
JAMU, INFUS DAUN SEGAR DAN SEDUHAN JAMU
DAUN KUMIS KUCING (Orthosipon aristatus(Blume) Miq)
SECARASPEKTROFOTOMETRISERAPAN ATOM
ABSTRAK
Obat tradisional dan tanaman obat banyak digunakan masyarakat terutama dalam upaya preventif, promotif dan rehabilitative. Salah satu tanaman yang bermafaat sebagai obat adalah tanaman kumis kucing (Orthosiphon aristatus (Blume) Miq), mudah sekali ditemukan di seluruh nusantara.
Sampel yang digunakan adalah daun kumis kucing segar, infus daun kumis kucing segar, jamu aun kumis kucing dan seduhan jamu daun kumis kucing lalu dilakukan penetapan kadar kalium dengan metode spektrofotometri serapan atom (AAS) yaitu logam kalium pada panjang gelombang 766,5 nm. Keuntungan dari metode ini adalah menggunakan nyala udara asetilen dan dapat menentukan kadar logam tanpa dipengaruhi oleh keberadaan logam yang lain.
Dari hasil penelitian dapat disimpulkan bahwa kadar kalium pada daun kumis kucing segar sebesar (1085,9113 ± 13,6571) mg/100 g, infus daun kumis kucing segar sebesar (172,23 ± 2,3446) µg/mL, jamudaun kumis kucing sebesar (699,5265 ± 3,7849) mg/100 g dan seduhanjamudaun kumis kucing sebesar (215,9975 ± 7,3287) µg/mL.Hasil uji perolehan kembali (recovery) untuk kalium 101,64% dengan RSD (relative standard deviation) 0,365%. Hasil ini menunjukkan spektrofotometri serapan atom yang digunakan memenuhi persyaratan akurasi dan presisi.
Kesimpulan hasil penelitian menunjukkan bahwa terdapat perbedaan pada daun kumis kucing segar,infus daun kumis kucing segar , jamu kumis kucing dan infus jamu kumis kucing, dimana kadar logam kalium lebih tinggi secara signifikan pada daun kumis kucing segar.
Kata Kunci : Kalium, Daun Kumis Kucing Segar, Infus Daun Kumis Kucing
7
DETERMINATION OF POTASSIUM CONTENT, FRESH
LEAVE, HERB, LEAVE INFUSION, AND STEEPING HERB
ON CAT WHISKERS (Orthosipon aristatus(Blume) Miq)
BY ATOMIC ABSORPTION SPECTROPHOTOMETRY
ABSTRACT
Traditional medicine and medicinal plants had been using for many communities, especially in efforts to preventive, promotive and rehabilitative. One of plants which useful as a medicine is cat's whiskers (Orthosiphon
aristatus(Blume) Miq), that is easy to find in the entire archipelago.
The sample for infusion, herb and steeping herbis fresh cat whiskers and it performed by atomic absorption spectrophotometry method (AAS) which potassium at a wavelength of 766.5 nm. Advantages of this method are the using of air acetylene flame and can determine metal content without being affected by the presence of other metals.
The results showed the levels of potassium fresh leaves is (1085.9113 ± 13.6571) mg/100 g, the infusion (172.23 ± 2.3446) µg/mL, herb is (699.5265 ± 3.7849) mg/100 g and steeping herb is (215.9975 ± 7.3287) µ g/mL. The retrieval test results (recovery) for potassium 101.64%with RSD (relative standard deviation) had 0.365%. These results indicate that atomic absorption spectrophotometry met the requirements of the accuracy and precision.
The conclusion of this research is there were differences on the fresh leaves, infusion of fresh leaves, products and infusion of products, wherein the potassium content was significantly higher in cat whiskersfresh leaves.
Keywords:Potassium, Fresh Leaves, Infusion, Herb, Steeping Herb, CatsWhisker,
