Browsing Chemistry by Title
Now showing items 113-132 of 142
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Rapid Analysis of Total Flavonoids from Medicinal Herb : Interpretation of Chemometrics on Infrared Spectra of Phyllantus Niruri
(2013-03-28)The potential of mid-infrared (FTIR) spectroscopy for the determination of secondary metabolites (total flavonoids) in Phyllantus niruri herb was investigated. The study are applying chemometrics technique (i.e. partial ... -
Rekayasa Biopolymer Hasil Samping Pabrik Tapioka (Onggok) sebagai Enriched Soil Conditioner : Tahap Sintesis Superabsorben
(2014-03-14)Polimer yang memiliki kemampuan daya serap air tinggi dapat digunakan sebagai soil conditioner. Kemampuan polimer menyerap air minimal 100 kali bobot awalnya dikatergorikan sebagai polimer superabsorben (SAP). Pada penelitian ... -
Residu Pestisida pada Tiga Jenis Buah Impor
(2001)Analysis of residues of three organophosphoreus insecticides (diazinon, dimethoate and chlorpyrifos) and benzimidazole fungicides (benomyl and carbendazin) in three imported fruits (grape, apple and pear) was conductedted. ... -
(S)-Mimosine From The Indonesian Sensitive Plant (Mimosa invisa Colla) As An Anti-Melanogenesis Agent (S)-Mimosina Dari Tumbuhan Sikejut Besar (Mimosa invisa Colla) Sebagai Anti-Melanogenesis
(2022)Ekstrak dari daun sikejut besar atau Mimosa invisa Colla (Fabaceae) telah diuji aktivitas anti melanogenesis menggunakan sel melanoma B16F10. Fraksi aktif diperoleh dari pemurnian menggunakan kromatografi cair vakum yang ... -
Separation of Picung (Pangium edule REINW.) seed for active compounds and biological activity test to Grayak caterpillar (Spodoptera litura F.)
(2007)Employing a synthetic pesticide may give harmful effect to the environtment, such as in-soil water pollution, killing natural enemy of pest, creating higher pest resistance, and secondary pest attack. The development of ... -
Sifat mekanis polipaduan polistirena-pati menggunakan zat pemlastis epoksida minyak jarak pagar
(2013-02-12)Polipaduan Olerupakan pencampuran secara fisik dua polimer atau lebih yang berbeda sifat dengan salah satu tujuannya menclapatkan polimer yang dapat terdegradasi dan memiliki sifat mekanik yang baik. Pati merupakan polimer ... -
Sintesis dan karakterisasi glukosamina hidroklorida berbasis kitosan
(2013-06-04)Abstract : Glucosamine hydrochloride salt is one of the amino sugars that has therapeutic properties such as anticancer, antimicrobial, and as raw material for arthritis drug. Objective of this study is to synthesize ... -
Sintesis dan karakterisasi resin lignin resorsinol formaldehida sebagai perekat kayu lamina
(2013-05-10)Lignin yang rerdapar dafam likuor hiram sulfat (dikenal dengan lignin krafr) mempunyai afiniras yang kuat apabila direaksikan dengan formaldehid unruk membentuk perekat lignin formaldehid. Unruk meningkarkan kualitas ... -
Sintesis dan Optimalisasi Gel Kitosan-Alginat
(2013)Shrimp shell can be used to make chitosan. The objective of this work is to sythesis and optimize chitosan-alginate gel by comparing its rheological properties. Rheological properties of chitosan were improved by gelation ... -
Sintesis dan Optimalisasi Gel Kitosan-Gom Guar
(2015-03-25)ABSTRACT : Shrimp shell can be used to make chitosan. Rheological properties of chitosan were improved by gelation using glutaraldehyde as cross linker and natural hydrocolloids such as guar gum. Rheological properties ... -
Sintesis dan Optimalisasi Gel Kitosan-Karboksimetil Selulosa
(2013)Telah dilakukan sintesis dan optimalisasi gel kitosan-karboksimetil selulosa (CMC) pada beragam konsentrasi glutaraldehida dan hidrokoloid alami CMC untuk memperbaiki sistem pengantaran obat. Gel dibuat dengan ragam ... -
Sintesis dan uji sitotoksik in vitro senyawa 2-Hidroksinikotinil oktilamida terhadap sel kanker leukimia murin p388
(2013-05-10)The novel compounds of2-hydroxynicotinyl octylamide (NOA) were synthesized by modifying of the UK-3A compound known biologically active to inhibit bacterial and cancer cell growth. Synthesis of2-hydroxynicotinyl octylamide ... -
Sintesis Hidrogel Poli(Vinil Alkohol)-Lignin Dari Lindi Hitam Dan Potensinya Sebagai Matriks Pelepasan Terkontrol Imidakloprid
(2022)Limbah hasil samping produksi pulp disebut lindi hitam. Komponen mayor lindi hitam ialah lignin sekitar 46% yang dapat fraksinasi menggunakan asam sulfat 6 M menghasilkan lignin sekitar 85%. Lignin hasil isolasi dari ... -
SINTESIS HIDROKSIAPATIT BERPORI DENGAN POROGEN KITOSAN DAN KARAKTERISASINYA
(2013-02-04)Telah dilakukan sintesis hidroksiapatit (HAp) berpori dengan porogen kitosan, menggunakan metode sol gel. HAp disintesis dari kalsium yang direaksikan dengan asam fosfat. Kalsium yang digunakan diekstrak dari cangkang telur ... -
Sintesis nanopartikel kitosan dengan metode ultrasonikasi dan sentrifugasi serta karakterisasinya
(2013-06-04)Abstract : Ketoprofen-loaded chitosan nanoparticles are produced by ionic gelation process of chitosan and tripolyphosphate (TPP) with ultrasonication and sentrifugation methods. Ultrasonic waves with 20 kHz frequency were ... -
Sintesis poliol sebagai bahan dasar pembentuk poliuretan berbasis minyak jarak pagar
(2013-04-16)III the recent .vears, l'egetable oil based polvol is an alterllative po~vol that hare been developed as bio-based prodllct lhat call reduce the widespread dependellce Oil the petrolelllll/eed stocks. A stud ... on po~vol ... -
Stabilitas mikrokapsul ketoprofen tersalut kitosan-alginat
(2013-06-04)Abstract : Drug preparations for stability test has been done in previous research, with composition of Chitosan 1.75% (w/v), alginate 0.625% (w/v), glutaraldehyde 4.5% (v/v), and ketoprofen 0.8% (w/v), added by Tween 80 ... -
Studi pengaruh perbandingan reaktan lignin NaHSO3 dan pH terhadap Natrium Lignosulfonat (NaLS)
(2013-04-03)Lignin was isolated from waste black liquor of soda pulping process. Sulfonation of soda lignin produced Sodium Lignosulfonate (NaLS) which can be used as dispersants, and concrete admixtures. In this research, sulfonation ... -
Studi produksi pektin asetat sebagai bahan baku lembaran bioplastik
(2013-05-10)ABSTRACT: The study was aim at obtaining the optimal acetylation and activation time for obtaining water insoluble acetylated pectin which would be used for bioplastic material. The activation time for swelling of pectin ... -
Study of Fourier Transform Infrared Spectroscopy and Scanning Electron Microscope of Cellulose Acetate Membrane from Wastewater of Tapioca
(2013-09-25)ABSTRACT. Wastewater of tapioca is waste product from starch precipitation or separation process from its water in making tapioca. This wastewater still contains carbohydrates such as glucose, so it can be used as raw ...