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All Journal Indonesian Journal of Pharmaceutical Science and Technology Jurnal Pendidikan Kimia FKIP Universitas Halu Oleo Chemistry Indonesian Journal of Chemical Research Indonesia Natural Research Pharmaceutical Journal (INRPJ) Hydrogen: Jurnal Kependidikan Kimia Jurnal Biofiskim: Pendidikan dan Pembelajaran IPA Jurnal Ilmu Pendidikan Indonesia
Nurlansi, Nurlansi
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Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Education Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Mathematics Medicine & Pharmacology Physics Social Sciences

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Journal : Chemistry Indonesian Journal of Chemical Research

 1 
Waktu Optimum Hidrolisis Pati Limbah Hasil Olahan Ubi Kayu (Manihot esculenta Crantz var. Lahumbu) Menjadi Gula Cair Menggunakan Enzim α-Amilase Dan Glukoamilase Ardiansyah, Ardiansyah; Nurlansi, Nurlansi; Musta, Rustam
Indonesian Journal of Chemical Research Vol 5 No 2 (2018): Edisi Bulan Januri (Edition For January)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2018.5-ard

Abstract

This study aims to determine optimum time of action of the enzyme α-amylase and glucoamylase needed in hydrolyze of starch from waste processed cassava (Manihot esculenta Crantz var. Lahumbu). This research was conducted through three main stages, namely the gelatinization, liquefaction and saccharification. The method was used method are liquefaction and saccharification. The variation time of the stage liquefaction: 12; 24; 36; 48; 60; and 72 minutes and the saccharification stage are: 9; 18; 27; 36; 45; 54; and 63 hours. The results showed that the optimum time required for stage liquefaction using α-amylase enzyme is 48 minutes on the condition of a temperature of 80 oC with a value of 0.09% amylose levels were measured using UV-Vis spectrophotometer. The optimum time required for saccharification step using a glucoamylase which is 54 hours on the conditions of a temperature of 50oC with the amount of reducing sugar concentration of 9.186 g/L as measured using a UV-Vis spectrophotometer.
Perbandingan Kemampuan Aerasi Sembur (Spray) dengan Metode Adsorpsi Menggunakan Adsorben Serbuk Kulit Buah Kakao untuk Menurunkan Kadar Besi dan Mangan Pada Air Sumur Gali Harimu, La; Haetami, Aceng; Sari, Citra Purnama; Haeruddin, Haeruddin; Nurlansi, Nurlansi
Indonesian Journal of Chemical Research Vol 8 No 2 (2020): Edition for September
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2020.8-hrm

Abstract

Research on the use of the spray aeration method with adsorption of cocoa rind powder to reduce iron and manganese levels in dug well water has been carried out. This study aims to make comparisons from two methods to reduce iron and manganese in dug well water. The parameters optimized in this study are the aeration time and the variation of the addition of the adsorbent mass and the adsorption time. Based on the research results, the spray aeration time for 2 hours gave the optimal percentage reduction for Fe3+ and Mn4+ metal ions, namely 98.68% and 94.22%. Meanwhile, for adsorption using cocoa pod husk powder, the optimal reduction occurred in the adsorbent mass of 0.2 grams and the adsorption time of 60 minutes for iron and manganese 96.36% and 95.15%, respectively.
Co-Authors A Halim Aceng Haetami, Aceng Ahmad, Zaeni Aminuddin Aminuddin ARDIANSYAH ARDIANSYAH Ayu Wandira Dahlan Dahlan Dali, Arniah Day, WaOde Hamsinah Haeruddin Haeruddin I Gusti Bagus Wiksuana Jabbar, Asriullah Kartikaningsih, Rahmawati La Harimu Mulyana, Wa Ode Musta, Rustam Nasrudin Purnawati, Alna Rahman, Abraham Ruslin, Ruslin Saefuddin Saefuddin Sari, Citra Purnama Suroto, La Susilawati, Lastri