Article Per Year (5 Year)
p-Index From 2020 - 2025
0.23
P-Index
This Author published in this journals
All Journal Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Makara Journal of Science Indonesian Journal of Jamu
Mas’ud, Zainal Alim
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Environmental Science Health Professions Medicine & Pharmacology

Published : 4 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 4 Documents
Search

 1 
Reaction Products of Crude Palm Oil-based Fatty Acids and Monoethanolamine as Corrosion Inhibitors of Carbon Steel Ali, Mohamad Makrus; Irawadi, Tun Tedja; Darmawan, Noviyan; Khotib, Mohammad; Mas’ud, Zainal Alim
Makara Journal of Science Vol. 23, No. 3
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Herein we report the application of the reaction products of crude palm oil-based fatty acids and monoethanolamine as sustainable corrosion inhibitors in acidic environments for carbon steels. Reaction products were identified based on FTIR analysis as a mixture of 2-aminoethyl fatty esters and N-(2-hydroxyethyl) fatty amides. Corrosion inhibition effect of these compounds was evaluated by potentiodynamic polarization techniques in 0.5 M HCl. The mixture of fatty esters and fatty amides showed promising potential as an alternative corrosion inhibitor. Inhibition efficiency was found to be 80% at 80 ppm. Thermodynamic and kinetic parameters obtained from the tafel plot displayed an increase in activation energy with a higher inhibitor concentration that led to the decrease in the corrosion rate. Furthermore, physisorption interaction was found to be the main process of the inhibitor’s adsorption on metal surfaces and obeyed the adsorption model of the Langmuir isotherm.
Synthesis and Application of Jatropha Oil based Polyurethane as Paint Coating Material Harjono, Harjono; Sugita, Purwantiningsih; Mas’ud, Zainal Alim
Makara Journal of Science Vol. 16, No. 2
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Recently, the use of renewable sources in the preparation of various industrial materials has been revitalized in response to environmental concerns. Natural oils are considered to be the most important genre of renewable sources. Jatropha curcas oil (JPO) based polyol is an alternative material that may possibly replace petrochemical-based polyol for polyurethane coating material. Polyurethane was synthesized by reacting JPO-based polyol with isocyanate. To produce JPO-based polyol, JPO was first epoxidized to form epoxidized J. curcas oil (EJP), subsequently it was converted to polyol by the opening ring reaction with acrylic acid (AA) using triethylamine (TEA) as a catalyst. The JPO-based polyurethane film resulting from this study is compared with polyurethane film from commercial polyol for gloss, hardness, and adhesion quality. The result showed that the source of polyol has an influence on gloss, hardness, and adhesion of polyurethane film, but the differences with using isocyanate has less influence. Using visual observation, polyurethane film produced from L.OHV polyol, H.OHV polyol and commercial polyol have similar quality.
Profil Residu Insektisida Organofosfat di Kawasan Produksi Bawang Merah (Allium Ascalonicum L.) Kabupaten Brebes Jawa Tengah Nining, Euis; Nazli, Rizal Sjarief Sjaiful; Mas’ud, Zainal Alim; Machfud, Machfud; Sobir, Sobir
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 9 No 4 (2019): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.9.4.999-1009

Abstract

Excessive use of pesticides can have an impact on the environment, including the loss of pesticide residues in soil and agricultural products. The purpose of this study was to determine the spreading of organophosphate pesticide residues in the shallot production area of  Brebes Regency, Central Java. Research locations were two districts selected by purposive sampling based on production area, namely Kersana and Wanasari Districts. Organophosphate compounds analyzed include chlorpyrifos, paration, profenofos, diazinon, fenitrotion, metidation and malation. Organophosphate residue analysis was carried out on seven soil samples and seven shallot products. Pesticide residue analysis was carried out using the standard method by using a gas chromatography device with an electron capture detector. Based on analysis, seven residues of organophosphate pesticides were chlorpyrifos, paration, profenofos, diazinon, fenitrotion, metidation and malation, spread in Kersana District, and six  pesticides residues (except profenofos) spread in Wanasari District. In soil samples, the highest residues obtained in two districts were chlorpyrifos compounds, chlorpyrifos compounds in Kersana District was higher than Wanasari District. In the shallot sample, the highest residues in two districts are diazinon compounds, diazinon compounds in the sample of Kersana District was  higher than Wanasari District. There were  several samples of shallot product contained organophosphate residue  exceed the maximum concentration of residual limit (RML).
Production of Secondary Metabolite Compounds of Gotu Kola (Centella asiatica) Under Salinity and Drought Stress Amallia, Nur; Mas’ud, Zainal Alim; Ratnadewi, Diah
Jurnal Jamu Indonesia Vol. 5 No. 2 (2020): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v5i2.102

Abstract

Gotu kola (Centella asiatica) is a traditional herbal plant that has been reported have a variety of pharmacological activities. The compounds of gotu kola that play a role on pharmacological activities are triterpene group compounds, namely madecasosside (MD), asiaticoside (AS), madecassic acid (AM), and asiatic acid (AA). Stress can affect the production of biomass and secondary metabolite compounds in plants. The aims of the study is to analyze the effect of salinity and drought stress on biomass and 4 compounds of triterpene in gotu kola. Harvesting is done when the plant is 8 weeks old. The yield of the biomass was analyzed and then extracted using methanol solvent to be analyzed secondary metabolite levels using the high performance liquid chromatography (HPLC) method. The lowest crop biomass was obtained at 50% of field capacity and 3,000 ppm salt content. The highest levels of MD and AS were established in conditions of 100% field capacity and 1,000 ppm salt content. The 50 and 100% field capacity and 1,000-3,000 ppm salt content did not affect the levels of AM and AA.
Co-Authors Ali, Mohamad Makrus Amallia, Nur Diah Ratnadewi Harjono Harjono Machfud Machfud Mohammad Khotib Nazli, Rizal Sjarief Sjaiful Nining, Euis Noviyan Darmawan Purwantiningsih Sugita Sobir Sobir Tun Tedja Irawadi