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All Journal Agrointek KOVALEN: Jurnal Riset Kimia Jurnal Pengolahan Pangan Buletin Palma Madani : Indonesian Journal of Civil Society Jurnal Sains dan Teknologi Rafflesia Journal of Natural and Applied Sciences (RJNAS)
Jusman, Jusman
Jurusan Kimia FMIPA Universitas Tadulako
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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SIFAT KIMIA, FUNGSIONAL DAN REOLOGI PATI AREN FOSFAT PADA KOMBINASI KONSENTRASI PATI AREN DAN WAKTU REAKSI YANG BERBEDA Abdul Rahim; Gatot Siswo Hutomo; Syahraeni Kadir; Nur Alam; Abd Hamid; Jusman Jusman
Jurnal Pengolahan Pangan Vol 3 No 2 (2018)
Publisher : Fakultas Pertanian Universitas Alkhairaat Palu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (331.294 KB) | DOI: 10.31970/pangan.v3i2.16

Abstract

The objectives of the study were to obtained the optimal combination of starch concentration and reaction time in the synthesis of phosphorylated arenga starches. Synthesis of phosphorylated arenga starches using sodium tripolyphosphate reagents and arenga starch 20 and 30% (b/v) with variations of time reaction 30 and 45 min. Chemical, functional and rheological characteristics of phosphorylated arenga starcheswere investigated i.e. percent phosphate and degree of substitution (DS), binding of phosphate groups using FourierTransform Infrared (FTIR), water and oil holding capacity (WHC, OHC), swelling power and solubility and emulsion separation volume. The results showed a combination of 30% arenga straches with a reaction time 45 min were optimal combination that to produced phosphorylated arenga starches with the highest of phosphate content (2.710%) and DS 0.147. The FTIR spectra of phosphorylated arenga starches have been a change in vibration of OH groups that replace the reaction of phosphate groups with OH in starch molecules. WHC and swelling power increased, but solubility phosphorylated arenga starches decreased with the in increasing combination of arenga starch concentration and reaction time. The emulsion separation volume the most stable at the combination of highest arenga starch concentration and the long reaction time. Phosphorylated arenga starches which produced were used as emulsifiers for food aplication
Aktivitas Antibakteri Ekstrak Kulit Batang Tumbuhan Johar (Senna siamea Lam) pada Berbagai Polaritas Pelarut : Antibacterial Activity of Johar (Senna siamea Lam) Stem Bark Extract on Various Solvent Polarities Djumidar; Abd. Rahman Razak; Ahmad Ridhay; Ni Ketut Sumarni; Syamsuddin; Jusman; Nurhaeni; Erwin Abdul Rahim
KOVALEN: Jurnal Riset Kimia Vol. 8 No. 2 (2022): August Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2022.v8.i2.15970

Abstract

Johar plant is a type of plant from the Fabaceae family which is widely used in traditional medicine such as malaria, itching and diabetes medicine. This study aims to determine the antibacterial activity of Johar stem bark extract with different levels of solvent polarity on the growth of Staphylococcus aureus and Escherichia coli bacteria and to determine the active compound class by TLC-Bioautography. The extraction of active compounds used a multilevel maceration method starting with n-hexane (non polar), followed by ethyl acetate (semi-polar) and ethanol (polar) solvents. Antibacterial activity testing was carried out by diffusion well method with a concentration variant of 25% and 50%. The results showed that n-hexane, ethyl acetate, and ethanol extract had antibacterial activity against the two test bacteria. Ethyl acetate and ethanol extract from Johar stem bark at a concentration of 50% were classified as very strong antibacterials with inhibition zone diameters against S. aureus, which were 22.02±0.84 mm and 20.16±0.23 mm, respectively. The results of the TLC-Bioautography test showed that the three test extracts had strong antibacterial activity against S. aureus and E. coli. In the n-hexane extract with n-hexane: ethyl acetate (9:1) eluent using Lieberman-Burchard spray reagent, it was suspected that triterpenoid compounds were present. In ethyl acetate extract with n-hexane: ethyl acetate (6:4) eluent and ethanol extract with chloroform: methanol (8:2) eluent using FeCl3 1% spray reagent, it was suspected that the tannin compound was present in both extracts.
SUBTITUSI RED PALM OIL (RPO) SEBAGAI ALTERNATIF PANGAN FUNGSIONAL KAYA BETAKAROTEIN Jusman Jusman; Syamsuddin Syamsuddin; Nur Aisyah
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 1 No. 2 (2021): Oktober
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v1i2.17724

Abstract

Telah dilakukan penelitian tentang subtitusi red palm oil sebagai alternatif pangan fungsional pada kue yang kaya akan kandungan betakaroten. Pada penelitian ini dilakukan uji kadar air, kadar abu, lemak, protein, karbohidrat, ?-karoten serta uji organoleptik. Berdasarkan hasil penelitian menunjukkan bahwa formula (F2) merupakan formula kue terpilih yang ditentukan berdasarkan nilai uji organoleptik tertinggi. Di mana formula (F2) memiliki kadar air yaitu 4,95%, abu 0,52%, lemak 19,44%, protein 53,22%, karbohidrat 78,13% dan ?-karoten 162,78%  Produk ini dikategorikan sebagai pangan fungsional tinggi beta karoten
Characterization Red Palm Oil (RPO) Olein Fraction Via Distillation Vacuum Jusman Jusman; Syamsuddin; Sri Handayani
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 3 No. 1 (2023): April
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v3i1.26834

Abstract

Research has been carried out on the effect of red palm oil quality via vacuum pressure reduction distillation. In the initial stage, the crude palm oil (CPO) was centrifuged at 4000 rpm for 30 minutes to separate the olein and stearin fractions, then the olein fraction was treated to produce red palm oil via the stages of degumming process, neutralization, and a distillation process by reducing vacuum pressure. The use of the vacuum pressure reduction distillation method provides a significant effect in the red palm oil production process. Several parameters were analyzed, such as free fatty acid content, peroxide value, and carotene content, which had a significant effect on the quality of the red palm oil produced. From the results of the study showed that the free fatty acid content was in the range of 0.03 - 0.08%, the peroxide value was 0.11 - 0.15 meq/kg, and the carotene content was 467-586 ppm.
Characterization Crude Palm Oil (CPO) Olein Fraction As A Raw Material for Cooking Oil Jusman Jusman; Syamsuddin
RAFFLESIA JOURNAL OF NATURAL AND APPLIED SCIENCES Vol. 3 No. 2 (2023): Oktober
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rjna.v3i2.30715

Abstract

Research has been carried out on the characterization of crude palm oil olein fraction as a raw material for cooking oil. In the initial stage, crude palm oil is centrifuged at 4000 rpm for 30 minutes to separate the olein and stearin fractions from crude palm oil. Then the olein fraction is treated using rice husk ash to obtain an olein fraction that meets the standard raw materials for making cooking oil. Therefore, the olein fraction was characterized by measuring several parameters including water content, free fatty acid content, carotenoid content and peroxide value. The results of research on water content are in the range of 0.02 – 0.07% , free fatty acid content is in the range of 0.03 – 0.08%, and peroxide content is in the range of 0.14 – 0.16 meq/kg. Results of research on the characterization of the crude palm oil olein fraction shows parameters that are a reference in determining the quality of cooking oil raw materials that meet the required standards.
Optimasi Proporsi Karagenan dan Karakteristik Sensoris Serta Nilai Proksimat Nugget Ikan Mujair dengan RSM Jusman, Jusman; Syamsuddin, Syamsuddin; Inri EGT
INSOLOGI: Jurnal Sains dan Teknologi Vol. 3 No. 5 (2024): Oktober 2024
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v3i5.4187

Abstract

This study aims to determine the optimal proportion of carrageenan to enhance the sensory characteristics and proximate values of tilapia (Oreochromis mossambicus) nuggets using the Response Surface Methodology (RSM) approach. Carrageenan concentrations were varied between 0.5% and 2% to evaluate their impact on color, aroma, flavor, texture, as well as protein, fat, and carbohydrate content. The analysis revealed that the optimal carrageenan proportion was 1.25%, with the highest sensory scores: color (9.9), aroma (9.8), flavor (9.9), and texture (9.9). At this level, the nuggets contained 16% protein, 8.5% fat, and 14% carbohydrates. Increasing the carrageenan proportion beyond 1.25% resulted in a decline in sensory quality and nutritional composition. Nuggets with the optimal carrageenan level achieved a balance between desirable texture and nutritional content, making them an ideal choice for fish-based food products. The RSM method proved effective in identifying the best formulation by analyzing variable interactions, ensuring accurate and replicable results. This study provides practical guidance for developing high-quality fish nuggets utilizing carrageenan as a binding agent. The findings are relevant to the food industry in formulating products that are not only flavorful but also nutritionally balanced. Therefore, the 1.25% carrageenan formulation is recommended for commercial applications, with the potential for further development in future research.
Pengembangan Usaha Kelompok Pengrajin Tenun Kain Donggala Melalui Diverifikasi Pewarnaan Alami Berbasis Daun Hendra Pribadi; Jusman Jusman; Herlina Yusuf; Muhammad Jufri; Litna Liana; Zakiina Zakiina
Madani : Indonesian Journal of Civil Society Vol. 8 No. 1 (2026): Madani : Februari 2026
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/madani.v8i1.2913

Abstract

This Community Partnership Program (PKM) addresses the main challenges faced by weavers in the Subi Group in Limboro Village, Donggala Regency. The main problems identified are limited production capacity due to outdated equipment, a lack of standardized knowledge in natural dyeing techniques, and limited capital. The solutions implemented include modernizing the looms, providing comprehensive training in the extraction and application of natural dyes based on leaves (such as jembolan, guava, mango, and teak) with precise digital measurements, and introducing electric yarn winding machines, as well as providing capital assistance for raw materials. As a result, production efficiency has increased significantly, with weaving time reduced from 30 to 40 days to just 20 days per piece of fabric. The use of natural fixatives (alum, lime, and tunjung) ensures more stable, high-quality, and environmentally friendly colors. This program has successfully improved the technical capacity of artisans and preserved local culture. Cultural heritage, empowered the community economy, and created a foundation for the development of products with Geographical Indication potential.
Isotermal Adsorpsi Ion Tembaga (II) Menggunakan Arang Tongkol Jagung (Zea mays L.) Teraktivasi Kalium Permanganat: Isothermal Adsorption of Copper (II) Ions Using Charcoal from Corn Cobs (Zea mays L.) Activated by Potassium Permanganate Lisma Habiba; Nov Irmawati Inda; Prismawiryanti; Husain Sosidi; Ni Ketut Sumarni; Dwi Juli Puspitasari; Moh. Mirzan; Jusman
KOVALEN: Jurnal Riset Kimia Vol. 9 No. 1 (2023): April Edition
Publisher : Chemistry Department, Mathematics and Natural Science Faculty, Tadulako University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/kovalen.2023.v9.i1.16292

Abstract

Corn cobs which generally only become waste can be processed into activated carbon and used for the absorption of heavy metals, such as copper(II) ions. This study aims to determine the morphology of corn cobs charcoal after activation, determine the isothermal adsorption model of copper (II) metal ions on corncob-activated carbon, and then determine the adsorption capacity of copper (II) metal ions on corncob-activated carbon. The morphology of the corncob-activated charcoal obtained was analyzed using Scanning Electron Microscopy (SEM). Isothermal adsorption of copper (II) ions was carried out with various concentrations of copper (II) ions of 5, 10, 20, 50, and 100 ppm. The results of the analysis using SEM showed that the surface shape of the corncob-activated charcoal is regular and has pores with a pore diameter obtained in the range between 1.08-1.26 m and 1.38-1.59 m. The mechanism of adsorption of copper (II) ions by corncob-activated charcoal using KMnO4, following the Freundlich isothermal model with a value of R2 0.9993 with an adsorption capacity of 51 x 10-4 mmol/L. The utilization of activated carbon from corn cobs that are activated by potassium permanganate is very effective for adsorbing copper metal ion pollutants through an adsorption mechanism on the surface of activated carbon.
Co-Authors Abd Hamid Abd. Rahman Razak Abd. Rahman Razak Abdul Rahim Abdul Rahman Razak Ahmad Ridhay Akhmad Syoufian Angriani Sambali Bambang Setiaji Betzy Eppang Djumidar Dwi Juli Puspitasari Erwin Abdul Rahim Gatot Siswo Hutomo Grace Sita Turumi Hendra Pribadi Herlina Yusuf Husain Sosidi If'all, If'all Indriani Indriani Inri EGT Jaya Hardi Jugni Hadiustri Agape Khairuddin Khairuddin Lisma Habiba Litna Liana Moh. Mirzan Mohamad Afdal Muhammad Fawzul Alif Nugroho Muhammad Jufri Ni Ketut Sumarni Nov Irmawati Inda Nur Aisyah Nur Alam Nur Faidah Nurhaeni Nurhaeni Nurhaeni Pasjan Satrimafitrah Prismawiryanti Prismawiryanti Rahmi, Rahmi Silva Silva Sri Handayani Stevi Evalin Mandjoro Sukmawati, Sukmawati Syahraeni Kadir Syaiful Bahri Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Syamsuddin Triyono Triyono Usman Made Zakiina Zakiina