LAPORAN PRAKTIKUM FITOKIMIA II ISOLASI DAN UJI AKTIVITAS AKTIVITAS EKSTRAK ETANOL DAUN SUKUN ( Artocapus altilis) altilis )
OLEH : KELOMPOK 4 : TRANSFER B 2016 RUTH M V TAHALELE
16.01.298
MARIA ANA FEBI
16.01.299
AHMAD KHAIRUL
16.01.300
HENDRA EKO SAMJANI
16.01.301
ANSYARULLAH
16.01.302
JANDRI LAYUK
16.01.304
MUH. RAMLI
16.01.303
JANUAR IBNU SUDRAJAT
16.01.305
ARIANTO D SYAHPUTRA
16.01.306
ISNAINA F.G. M
16.01.307
LABORATORIUM BIOLOGI FARMASI SEKOLAH TINGGI ILMU FARMASI MAKASSAR 2017
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BAB I PENDAHULUAN 1.1. Latar belakang Masyarakat Indonesia telah mengenal berbagai tanaman obat tradisional yang dapat digunakan untuk pemeliharaan kesehatan dan mampu mengobati penyakit, namun penggunaan secara luas dan optimal masih mengalami kendala antara lain kurangnya informasi mengenai keamanan dan kemanfaatan
dari tanaman obat itu
sendiri. Seiring
berkembangnya
pengobatan
di
Indonesia,
perkembangannya kini mengarah ke sistem pengobatan herbal yang memanfaatkan tanaman yang mempunyai khasiat obat atau menyembuhkan penyakit. Sediaan herbal dapat berupa simplisia, jamu, herbal terstandar, dan fitofarmaka. fitofarmaka. Simplisia adalah bahan alamiah yang dipergunakan sebagai obat yang belum mengalami pengolahan apapun juga dan kecuali dinyatakan lain berupa bahan yang dikeringkan. Simplisia dapat berupa simplisia nabati (tumbuhan), simplisia hewani (hewan), simplisia
pelikan
(mineral).
Daun
Sukun
( Artocapus Artocapus
altilis) altilis)
merupakan Salah satu tanaman yang dapat dibuat simplisia dan dimanfaatkan sebagai obat tradisional. Daun sukun ( Artocapus Artocapus altilis) altilis) merupakan salah satu tanaman yang mudah didapatkan dan secara empiris telah digunakan di masyarakat tertentu di Indonesia sebagai obat tradisional untuk mengobati berbagai penyakit. Daun sukun bany ak mengandung senyawa kimia yang bermanfaat seperti polifenol, asam hidrosianat, asetilkolin, tanin, tanin, riboflavin, riboflavin, fenol, dan flavanoid. flavanoid. Berdasarkan uraian diatas maka dilakukanlah percobaan
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1.2. Maksud dan tujuan 1.2.1. Maksud percobaan Maksud dari percobaan ini adalah agar praktikan mengetahui cara penyiapan sampel daun sukun ( Artocarpus altillis), altillis), cara ekstraksi yang tepat berdasarkan sampel, isolasi senyawa kimia dalam ekstrak etanol daun sukun ( Artocarpus altilis) altilis) dengan metode KLTP serta untuk menguji aktivitas ekstrak etanol daun sukun ( Artocarpus Artocarpus altillis) altillis) dengan metode BSLT. 1.2.2. Tujuan percobaan Adapun tujuan dari percobaan percobaan ini adalah: 1.
Untuk memperoleh simplisia yang bermutu dari sampel daun sukun ( Artocarpus Artocarpus altillis) altillis)
2.
Untuk melakukan ekstraksi dengan metode maserasi.
3.
Praktikan dapat memperoleh senyawa kimia yang terkandung dalam ekstrak etanol daun sukun ( Artocarpus altillis) altillis) melalui isolasi dan karakterisasi dengan metode KLTP dan KLT dua dimensi.
4.
Untuk
mengukur
aktivitas
ekstrak
etanol
daun
sukun
( Artocarpus Artocarpus altilis) altilis) terhadap larva udang denga metode BSLT.
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BAB II TINJAUAN PUSTAKA II.1
URAIAN TANAMAN II.1.1 Klasifikasi tanaman (Ning Harmanto,2012)
Kingdom
: Plantae
Divisi
: Spermatophyta
Sub divisi
: Magnoliophyta
Kelas
: Magnoliopsida
Ordo
: Urticales
Famili
: Moraceae
Genus
: Artocarpus
Species
: Artocarpus : Artocarpus altilis
Selain Artocarpus altilis, tanaman sukun mempunyai beberapa nama ilmiah lain yang sering digunakan yaitu Artocarpus communis Forst dan Artocarpus dan Artocarpus incisa Linn. Linn.
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II.1.2 Sinonim (Nama Daerah) Beberapa daerah di Indonesia tanaman sukun memiliki nama daerahnya masing-masing. Misalnya nama tanaman sukun untuk daerah Madura (sokon), Irian (kamandi), Gorontalo (amu). ( amu). II.1.3 Morfologi Tanaman Pada dasarnya sukun ( Artocarpus altilis) altilis) tergolong tanaman tropik sejati dengan tempat tumbuh terbaik didataran rendah , sukun juga tumbuh diberbagai tempat karena daya daya adaptasinya yang tinggi. Tanaman ini tumbuh baik didaerah basah, tetapi dapat juga tumbuh didaerah yang sangat kering asalkan ada air tanah dan aerasi tanah yang cukup. Bahkan pada musim kemarau, sukun dapat tumbuh dan berbuah dengan lebat (Ning Harmanto,2012). Tinggi tanaman sukun dewasa dapat mencapai 30 meter dengan tajuk menyerupai piramida. Umumnya tanaman sukun membentuk percabangan mulai di ketinggian ketinggian 1,5 meter
diatas
permukaan tanah. Daun sukun berbentuk oval dengan ujung meruncing. Ukurannya tergolong besar dengan ukuran panjang 3060 cm dan lebar 20-40 cm. Warna daun dibagian atas hijau tua mengkilap dengan permukaan halus. Sementara itu daun bagian bawah berwarna hijau pucat, bertekstur kasar dan berbulu halus (Ning Harmanto,2012). II.1.4 Khasiat dan kandungan kimia Daun sukun mengandung beragam zat yang sangat ampuh menyembuhkan penyakit. Adapun kandungan kimia dalam daun sukun adalah asam bidrosianat, aseticolin, riboflavin, tanin, flavonoid dan sitosterol. Zat asam hidrosianat, asetilkolin, tanin dan ribovlavin terbukti mengatasi peradangan dan penyakit ginjal. Kandungan flavonoid dan sisterol dalam daun sukun berfungsi menunjang kesehatan jantung dan pembuluh darah (Abdul Waid,2011).
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II.2
Simplisia II.2.1 Definisi Simplisia (Dirjen POM,1986) Simplisia adalah bahan alam yang digunakan untuk obat dan belum mengalami perubahan proses apapun dan kecuali dinyatakan lain umumnya berupa bahan yang telah dikeringkan. Simplisia tumbuhan obat merupakan bahan baku proses pembuatan ekstrak, baik sebagai bahan obat atau produk. Berdasarkan hal tersebut maka simplisia dibagi menjadi menjadi tiga golongan golongan yaitu simplisia nabati, nabati, simplisia hewan dan simplisia pelikan/mineral. 1.
Simplisia Nabati Simplisia nabati adalah simplisia berupa tanaman utuh, bagian tanaman dan eksudat tanaman. Eksudat tanaman adalah isi sel yang secara spontan keluar dari tanaman atau isi sel dikeluarkan dari selnya dengan cara tertentu atau zat yang dipisahkan dari tanaman dengan cara tertentu yang masih belum berupa zat kimia murni.
2.
Simplisia Hewani Simplisia hewani adalah simplisia hewan utuh, bagian hewan atau belum berupa zat kimia murni.
3.
Simplisia Mineral Simplisia hewani adalah simplisia berasal dari bumi baik telah diolah atau belum, tidak tidak berupa zat kimia murni.
II.2.2 Pengelolaan Simplisia (Gunawan,2004) Proses awal pembuatan ekstrak adalah tahapan pembuatan serbuk simplisia kering. Dari simplisia dibuat serbuk simplisia dengan perakatan tertentu sampai derajat kehalusan tertentu proses in dapat mempengaruhi mutu ekstrak dengan dasar beberapa hal yaitu makin halus serbuk simplisia proses ekstraksi makin efektif, efesien namun makin halus serbuk maka makin rumit secara teknologi peralatan
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timbul panas yang dapat berpengaruh pada kandungan senyawa aktif. Namun hal ini dapat dikompesasi dengan penggunaan nitrogen cair. Untuk menghasilkan simplisia yang bermutu dan terhindar dari cemaran industri obat tradisonal dalam mengelola simplisia sebagai bahan baku pada umumnya melakukan tahapan kegiatan berikut ini: 1. Sortasi basah Sortasi basah dilakukan untuk memisahkan kotorankotoran atau bahan-bahan asing lainnya dari bahan simplisia. Misalnya simplisia yang dibuat dari akar suatu tanaman obat, bahan-bahan asing seperti tanah, krikil, rumput, batang, daun, akar yang telah rusak, serta pengotoran lainnya harus dibuang. Tanah yang mengandung bermacam-macam mikroba dalam jumlah yang tinggi. Oleh karena itu pembersihan simplisia dari tanah ..yang terikut dapat mengurangi jumlah mikroba awal. 2. Pencucian Pencucian dilakukan untuk mennghilangkan tanah dan pengotor lainnya yang melekat pada bahan simplisia. Pencucian dilakukan dengan air bersih, misalnya air dari mata air, air sumur dari PAM. Bahan simplisia yang mengandung mengandung zat yang yang mudah larut dalam air yang mengalir, pencucian hendaknya dilakukan dalam waktu yang sesingkat mungkin. 3. Perajangan
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menguap, sehingga mempengaruhi komposisi, bau, dan rasa yang diinginkan. 4. Pengeringan Tujuannya yaitu untuk mendapat simplisia yang tidak mudah rusak, sehingga dapat disimpan dalam waktu yang lebih lama. Dengan mengurangi kadar air dan menghentikan reaksi enzimatik akan dicegah penurunan mutu atau perusakan simplisia. Air yang masih tersisa dalam simplisia pada kadar tertentu dapat menjadi media pertumbuhan kapang dan jasad renik lainnya. Proses pengeringan sudah dapat menghentikan proses enzimatik dalam sel bila kadar airnya dapat mencapai kurang dari 10%. Hal-hal yang perlu diperhatikan selama proses pengeringan adalah suhu pengeringan, kelembapan udara, aliran udara, waktu pengeringan, dan luas permukaan bahan. Suhu yang terbaik pada pengeringan adalah tidak melebihi 600C, tetapi bahan aktif yang tidak tahan pemanasan atau mudah menguap harus dikeringkan pada suhu serendah mungkin, misalnya 300C sampai 450C. Terdapat dua cara pengeringan
yaitu
pengeringan
alamiah
dan
pengeringan
buatan. 5. Sortasi Kering Sortasi setelah pengeringan sebenarnya merupakan tahap akhir pembuatan simplisia. Tujuan sortasi adalah untuk
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6. Penyimpanan Setelah tahap pengeringan dan sortasi kering selesai maka simplisia perlu ditempatkan dalam suatu wadah tersendiri agar tidak saling bercampur antara simplisia satu dengan yang lainnya.
Selanjutnya,
wadah-wadah
yang
berisi
simplisia
disimpan dalam rak pada gudang gudang penyimpanan. penyimpanan. Adapun Adapun faktorfaktor yang mempengaruhi pengepakan dan penyimpanan simplisia adalah cahaya, oksigen, atau sirkulasi udara, reaksi kimia yang terjadi antara kandungan aktif tanaman dengan wadah,
penyerapan
air,
kemungkinan
terjadinya
proses
dehidrasi, pengotoran atau pencemaran, baik yang diakibatkan oleh serangga, kapang atau jasa renik lainnya. Untuk persyaratan wadah yang akan digunakan sebagai pembungkus simplisia adalah harus inert, artinya tidak mudah bereaksi dengan bahan lain, tidak beracun, mampu melindungi bahan simplisia dari cemaran mikroba, kotoran, serangga, penguapan kandungan kandungan aktif serta
dari pengaruh cahaya,
oksigen, dan uap air. II.3
METODE EKSTRAKSI Ekstraksi adalah pemisahan suatu zat dari campurannya dengan pembagian sebuah zat terlarut antara dua pelarut yang tidak dapat tercampur untuk mengambil zat terlarut tersebut dari satu pelarut ke pelarut yang lain. Ekstraksi bertujuan untuk melarutkan
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1.
Metode Maserasi Maserasi merupakan cara penyarian yang sederhana. Maserasi dilakukan dengan cara merendam serbuk simplisia dalam cairan penyari. Cairan penyari akan menembus dinding sel dan masuk ke dalam rongga sel yang mengandung zat aktif, zat aktif akan larut dengan karena adanya perbedaan konsentrasi antara larutan zat aktif di dalam sel dengan yang di luar sel, maka larutan yang terpekat didesak keluar. Peristiwa tersebut berulang sehingga terjadi keseimbangan konsentrasi antara larutan di luar sel dan di dalam sel. Prinsip maserasi adalah ekstraksi zat aktif yang dilakukan dengan cara merendam serbuk dalam pelarut yang sesuai selama beberapa hari pada temperature kamar terlindung dari cahaya, pelaut akan masuk kedalam sel tanaman melewati dididing sel. Isi sel akan larut karena adanya perbedaan konsentrasi antara larutan didala sel dengan diluar sel. Larutan yang konsentrasinya tinggi akan terdeak keluar dan diganti oleh pelarut dengan konsentrasi rendah (proses difusi). Peristiwa tersebut akan berulang sampai terjadi keseimbangan antara larutan didalam sel dan larutan diluar sel (Ansel, 1989). Maserasi biasanya dilakukan pada temperatur 15 o20oC dalam waktu selama 3 hari sampai bahan-bahan yang
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sebanyak 100 bagian. Bejana ditutup dan dibiarkan ditempat sejuk, terlindung dari cahaya, selama 2 hari kemudian endapan dipisahkan. Pelarut Yang Digunakan Dalam Metode Maserasi, Farmakope Indonesia menetapkan bahwa sebagai cairan penyari adalah air, etanol, etanoletanol-air air atau eter. dipertimbangkan
sebagai
penyari
karena
Etanol
lebih
selektif,
kapang dan kuman sulit tumbuh dalam etanol 20% keatas, tidak
beracun, netral,
absorbsinya
baik,
etanol
dapat
bercampur dengan air pada segala perbandingan dan panas yang
diperlukan
untuk
pemekatan
lebih
sedikit
(Dirjen
basa,
minyak
POM,1979) Etanol menguap,
dapat glikosida,
melarutkan
alkaloid
kurkumin,
kumarin,
antrakinon,
flavonoid, steroid, damar dan klorofil. Lemak, malam, tanin dan saponin hanya sedikit pengganggu
yang
larut. Dengan demikian zat
terlarut hanya
meningkatkan penyarian biasanya etanol dan air. Perbandingan
terbatas. Untuk
menggunakan
jumlah
etanol
jumlah dan
air
tergantung pada bahan yang disari (Dirjen POM,1979). 2.
Metode Perkolasi Perkolasi adalah proses penyarian simplisia dengan jalan melewatkan pelarut yang sesuai secara lambat pada
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menahan. Kekuatan yang berperan pada perkolasi antara lain: gaya berat, kekentalan, daya larut, tegangan permukaan, difusi, osmosa, adesi, daya kapiler dan daya geseran / friksi. II.3.2 Ekstraksi Cara Panas (Dirjen POM,1986) Metoda ini pastinya melibatkan panas dalam prosesnya. Dengan adanya panas secara otomatis akan mempercepat proses penyarian dibandingkan cara dingin. Jenis ekstraksi panas adalah refluks dan sokletasi. 1.
Metode Refluks Salah satu metode sintesis senyawa anorganik adalah refluks, metode ini digunakan apabila dalam sintesis tersebut menggunakan pelarut yang volatil. Pada kondisi ini jika dilakukan pemanasan biasa maka pelarut akan menguap sebelum reaksi berjalan sampai selesai. Prinsip dari metode refluks adalah pelarut volatil yang digunakan akan menguap pada suhu tinggi, namun akan didinginkan dengan kondensor sehingga pelarut yang tadinya dalam bentuk uap akan
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pelarut tersebut dimasukkan kembali ke dalam labu dengan membawa senyawa kimia yang akan diisolasi tersebut. Pelarut yang telah membawa senyawa kimia pada labu distilasi yang diuapkan dengan rotary evaporator sehingga pelarut tersebut dapat diangkat lagi bila suatu campuran organik berbentuk cair atau padat ditemui pada suatu zat padat, maka dapat diekstrak dengan
menggunakan
pelarut
yang
diinginkan
(Dirjen
proses
ekstraksi
adalah
POM,1986). Faktor-faktor
yang
mempengaruhi
(Dalimantha,2013): a.
Temperatur Pada temperatur tinggi umumnya kelarutan juga tinggi. Tetapi dalam beberapa hal temperatur juga dijaga rendah untuk mencegah terjadinya penguapan pelarut dan rusaknya zat terlarut.
b.
Ukuran partikel Semakin kecil ukuran partikel maka semakin luas
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diinginkan. Jumlah pelarut sebanding dengan laju leaching, semakin banyak pelarut maka laju leaching juga makin cepat. e.
Kecepatan pengadukan Semakin cepat pengadukan maka jumlah zat terlarut yang berpindah ke dalam pelarut semakin banyak yang berarti laju leaching juga semakin cepat.
II.4
Fraksinasi Fraksinasi
adalah
pemisahan
yang
bertujuan
untuk
memisahkan golongan utama kandungan yang lain. Senyawa yang bersifat polar akan masuk kedalam pelarut-pelarut polar dan senyawa yang bersifat nonpolar akan masuk ke dalam pelarut nonpolar. Bila kita meneliti fropil fitokimia lengkap daru suatu jenis tumbuhan, maka sebelum dikromatografi ekstrak kasar perlu difraksinasi untuk memisahkan golongan utama kandungan yang satu dari golongan utama yang lainnya (Harbone,1987). Fraksinasi juga dapat dilakukan dengan metode ekstraksi padat-cair
atau ekstraksi dengan pelarut terjadi dengan proses
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menerus selama pemindahan kromatografi karena berada dalam sistem kesetimbangan dinamis. Solut akan terdistribusi diantara dua fase yang bersesuaian dengan perbandingan distribusinya untuk menjaga keadaan kesetimbangan (Gritter,dkk.,1991). Ada empat jenis mekanisme absorbsi, yaitu (Rohman dan Gandjar 2008) 1.
Adsorbsi , merupakan penyerapan pada permukaan yang melibatkan interaksi-interaksi elektrostatik seperti pada gaya antarmolekuler pada fase diam dengan fase gerak, misalnya: kromatografi kertas dan KLT.
2.
Partisi , merupakan proses sorbsi seperti pada proses ekstraksi pelarut dengan cara cara solut akan terdistribusi diantara fase diam sesuai
dengankelarutan
relative
keduanya,
misalnya:
kromatografi cair-gas. 3.
Pertukaran ion, merupakan proses pertukaran solut-solut ion diantara ion-ion yang terikat pada fase diam yang dinamakan resin berupa padatan polimer oraganik yang bermuatan.
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(pelarut pengembang). Fase diam dapat berupa serbuk halus yang berfungsi sebagai permukaan penyerap (kromatografi cair-padat). (Dewi 2005). sebagai fase diam dapat digunakan silika atau alumina yang dilapiskan pada lempeng kaca atau alumunium. Jika fase diam berupa silika gel maka bersifat asam, jika fase diam alumina maka bersifat basa. Fase gerak atau larutan pengembang biasanya digunakan pelarut campuran organik atau bisa juga campuran pelarut organik-anorganik (Gritter, dkk.1991). II.5.2 Sistem Fase Fase Diam Silika Gel pada pada KLT Fase diam yang paling banyak digunakan adalah silika gel dan alumunium oksida. Jenis adsorben yang umum digunakan untuk KLT adalah silika gel, karena silika gel adalah fase diam universal yang dapat digunakan untuk memisahkan senyawa-senyawa yang bersifat netral, asam atau basa. Silika gel merupakan penyerap yang paling banyak dipakai dalam KLT. Senyawa netral yang mempunyai gugusan sampai tiga pasti dapat dipisahkan pada lapisan yang
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Pemilihan sistem pelarut dan komposisi larutan ditentukan oleh prinsp kromatografi yang akan digunakan. Untuk meneteskan sampel yang akan dipisahkan digunakan suatu mikro-syriringe (penyuntik berukuran mikro). Sampel diteteskan pada salah satu bagian pelarut kromatografi (sebanyak yang dipisahkan) dan harus cukup baik sebagai pelarut yang bersaing dengan daya serap penyerap. Keadaan yang ideal tersebut mungkin terjadi jika pelarut tidak berproton seperti hidrokarbon, eter dan senyawa karbonil dipakai sebagai pelarut pengembang (Gritter,dkk.,1991). Kromatografi
dengan
fase
diam
silika
gel,
sering
menggunakan fase gerak organik atau campuran pelarut organik.
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Harga Rf beragam mulai dari 0 sampai 1. Faktor-faktor yang mempengaruhi harga Rf (Sastrohamidjojo, 2005): a. Struktur kimia dari senyawa senyawa yang sedang dipisahkan dipisahkan b. Sifat Penjerap c. Tebal dan kerataan dari lapisan Penjerap Penjerap d. Pelarut dan derajat kemurniannya e. Derajat kejenuhan kejenuhan uap pengembang dalam bejana bejana f.
Teknik percobaan
g. Jumlah cuplikan yang digunakan h. Suhu i.
Kesetimbangan
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permukaan atas kalsium karbonat, kemudian dialirkan pelarut petroleum eter. Hasilnya berupa pita-pita berwarna yang terlihat sepanjang kolom sebagai hasil pemisahan komponen-komponen dalam ekstrak tumbuhan (Alimin, 2007). Kromatografi adalah proses melewatkan sampel melalui suatu kolom, perbedaan kemampuan adsorpsi terhadap zat-zat yang sangat mirip mempengaruhi resolusi zat terlarut dan menghasilkan apa yang disebut kromatogram (Khopkar, 2008). Kromatografi kolom adalah kromatografi yang menggunakan kolom sebagai alat untuk memisahkan komponen-komponen dalam campuran. Alat tersebut berupa pipa gelas yang dilengkapi suatu
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secara selektif tertahan. Komponen dengan afinitas paling kecil akan bergerak lebih cepat mengikuti aliran pelarut (Yazid, 2005). II.6.2 Teknik
Pemisahan
Kromatografi
Kolom
Dalam
Memisahkan Campuran. Campuran. Kolom yang telah dipilih sesuai ukuran diisi dengan bahan penyerap (adsorben) seperti alumina dalam keadaan kering atau dibuat seperti bubur dengan pelarut. Pengisian dilakukan dengan bantuan batang pengaduk untuk memampatkan adsorben dengan gelas wool pada dasar kolom. Pengisian harus dil akukan secara hatihati dan sepadat mungkin agar rata sehingga terhindar dari gelembung-gelembung
udara.
Untuk
membantu
homogenitas
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Teknik pemisahan kromatografi kolom partisi sangat mirip dengan kromatografi kolom adsorpsi. Perbedaan utamanya terletak pada sifat dari penyerap yang digunakan. Pada kromatografi kolom partisi penyerapnya berupa materi padat berpori seperti kieselguhr, selulosa atau silika gel yang permukaannya dilapisi zat cair (biasanya air). Dalam hal ini zat padat hanya berperan sebagai penyangga (penyokong) dan zat cair sebagai fase diamnya. Fase diam zat cair umumnya diadsorpsikan pada penyangga padat yang sejauh mungkin inert terhadap senyawa-senyawa yang akan dipisahkan. Zat penyokong padat harus menyerap dan menahan fase diam serta harus membuat permukaannya seluas mungkin
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Pada
kromatografi
kolom,
campuran
yang
akan
dipisahkan diletakkan berupa pita pada bagian atas kolom, penjerap yang berada dalam tabung kaca, tabung logam atau bahkan tabung plastik. Pelarut (fase gerak0, dibiarkan mengalir melalui kolom karena aliran yang disebabkan oleh gaya berat
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Ukuran penjerap biasanya lebih besar daripada untuk KLT. Kemasan kolom biasanya 63-250 mikro meter untuk kolom yang dijalankan oleh gaya gravitasi (Sastrohamidjojo, 1985). Kromatografi kolom merupakan metode kromatografi klasik yang masih banyak digunakan. Kromatografi kolom
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dibuat dari material pendukung yang dilapisi fase diam dari berbagai pembebanan yang dikemas di dalam kolom. Kolom kapiler terdiri dari tabung kapiler panjang yang didalamnya dilapisi dengan fase diam (fase diam dapat juga
direkatkan
langsung
pada
permukaan
silika).
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Kromatografi Cair Vakum (KCV) merupakan salah satu metode
fraksinasi
extract menjadi
yaitu
dengan
fraksi-fraksinya
yang
memisahkan crude lebih
sederhana.
Pemisahan tersebut memanfaatkan kolom yang berisi fasa diam dan aliran fasa geraknya dibantu dengan pompa vakum.
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sangat mirip mempengaruhi resolusi zat terlarut dan menghasilkan apa yang disebut kromatogram (Khopkar, 2008). Kromatografi merupakan salah satu metode pemisahan komponen-komponen campuran dimana cuplikan berkesetimbangan di antara dua fasa, fasa gerak yang membawa cuplikan dan fasa
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Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.
The world's largest digital library
Try Scribd FREE for 30 days to access over 125 million titles without ads or interruptions! Start Free Trial Cancel Anytime.