Search
Now showing items 41-50 of 1869
Sidik Jari Bakau (Rhizophora sp.) sebagai Bahan Baku Antioksidan dan Inhibitor Tirosinase
(2013)
Rhizophora sp. is one species of mangrove which has many functions including cosmetic herbal, one of which is as inhibitor of tyrosinase enzyme to heal hyperpigmentation and melanosis in human skin. The aim of this study ...
Optimalization Synthesis of Chitosan-Based Glucosamine HydrochloridePengoptimalan Sintesis Glukosamina Hidroklorida Berbasis Kitosan
(2010)
In this study, glucosamine hydrochloride has been synthesized based on chitosan hydrolysis using HCl. The reaction time, temperature, and HCl concentration were varied and investigated. The Box Behnken method response ...
Purifikasi dan Pencirian Eritropoietin Rekombinan Hasil Ekspresi pada Sistem Khamir Pichia pastoris
(2009)
For the clinical purposes needed a purified protein and the carbohydrates contains of recombinant erythropoietin (EPO) should be known. Purification was done by histrap method and then applied to column chromatography gel ...
Adsorpsi dan desorpsi kromium (VI) pada zeolit alam asal Lampung termodifikasi Heksadesiltrimetilamonium bromida
(2009)
Zeolite is a mineral that is able to adsorp chromium. Chromium has three stable forms in nature,i.e. metal chromium, trivalent chromium, and hexavalent chromium. Among these forms, hexavalent chromium are the most toxic ...
Kitosan Tertaut Silang Urea-Formaldehida dan Asam Sulfat Sebagai Penjerap Cibacron Red
(2012)
Modified chitosan cross-linked with urea-formaldehyde and sulfuric acid has been prepare through an establishment of cross-linker material of urea, formaldehyde, and sulfuric acid with the ratio 1:2:1. The ratio of ...
Evaluasi Migrasi Di-(2-etilheksil)ftalat dari Botol Polietilena Tereftalat Menggunakan GC/MS
(2009)
Di-(2-ethylhexyl)phthalate (DEHP) is additive plasticizer in production of polyethylene terephthalate (PET) bottles which is commonly used for bottling. DEHP is carcinogenic and the Environmental of Protection Agency has ...
Synthesis of Magnetite Nanocrystal Used Urea as Cr(VI) AdsorbentSintesis Nanokristal Magnetit Menggunakan Urea sebagai Penjerap Cr(VI)
(2010)
The study was to synthesize and characterize magnetite nanocrystal. Magnetite powder was synthesized using hydrothermal method from FeSO4 as precursor and sodium hydroxide and urea as the base sources. Characterization of ...
Transesterifrication Optimization of Sterculia foetida Biodiesel and Its Quality During StorageOptimisasi Transesterifikasi Biodiesel Kepuh dan Analisis Mutunya Selama Penyimpanan
(2010)
The availability of natural oil is decreasing rapidly. Therefore, alternative fuel is needed. Biodiesel is one of alternative fuel which can replace diesel fuel. Kepuh (Sterculia foetida) oil can be converted to biodiesel ...
Thin Layer Chromatography Fingerprints of Leaves of Three Guava TypesSidik Jari Kromatografi Lapis Tipis dari Daun Tiga Jenis Jambu Biji
(2011)
Guava leaf contains chemical compounds having antioxidant activity. Quality control methods are needed to maintain the quality of raw materials. The objective of this research is to find the chromatographic fingerprints ...
Adsorpsi ion Cr(III) dan Cr(VI) menggunakan bentonit alam termodifikasi oksida besi
(2012)
Speciation of trivalent and hexavalent chromiums is important to do because both have very different characteristics. Hexavalent chromium is toxic meanwhile trivalent chromium is needed in metabolism. The aim of this study ...