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All Journal Indonesian Journal of Chemistry JOPS (Journal Of Pharmacy and Science) Jurnal Kartika Kimia Makara Journal of Science Journal Serambi Engineering (JSE)
Untung Triadhi
Institut Tekhnologi Bandung, Jl. Ganesha No 10, Bandung, Jawa Barat, Indonesia
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health

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Polyvinyl Alcohol-Cellulose Nanocrystal Hydrogel Containing Anti-inflammatory Agent Lia Amelia Tresna Wulan Asri; Athiya Anindya; Yuni Eva Kartika; Dita Puspitasari; Untung Triadhi; Husaini Ardy
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.73357

Abstract

Hydrogel wound dressings were developed through cross-linking reactions of polyvinyl alcohol (PVA) with glutaraldehyde and by the addition of diclofenac sodium and rutin as anti-inflammatory agents. Cellulose nanocrystals (CNC) were added to improve mechanically and release properties. CNC was isolated from pineapple leaf fibers through the ammonium persulfate method resulting in a mixture of rod-like whisker and spherical morphology. The mechanical properties of hydrogels are increasing with the addition of CNC. Hydrogels containing 8% CNC exhibited 7.266 N/mm2 tensile strength, 156.3% maximum strain, and 700.3 N/mm2 elastic modulus. Drug release tests containing sodium diclofenac were done by taking incubated phosphate buffer saline samples in a pH 7.4 environment and showed that all CNC variations tested are controllable for the first 30 min compared to the sample without CNC. Sodium diclofenac is easily eluted from hydrogel due to its polar properties, and all samples almost demonstrated the same release profile. PVA hydrogels showed fluctuating concentrations of diclofenac compared to others. While hydrogels containing rutin showed a controlled release mode, the addition of CNC in PVA resulted in a slower release of rutin, possibly due to the better binding between CNC and rutin. To conclude, CNC has successfully improved the performance of PVA hydrogels, including the drug release properties.
Kinetic Study of Pb(II) Adsorption on Food-grade κ-Carrageenan Beads Felice Pricilla Hilmawan; Khalisha Rhea Amalia; Muhammad Iqbal; Syifabudi Chairurrizky; Untung Triadhi
Jurnal Serambi Engineering Vol. 9 No. 3 (2024): Juli 2024
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Heavy metal contamination in open waters is one of the most urgent environmental problems that needs to be addressed. Pb(II) ion is a toxic heavy metal ion and is often found contaminating nature. Adsorption is one of the methods that is widely used to overcome heavy metal ion pollution such as Pb(II). One source of material that is low-cost, environmentally friendly, and readily available for use as an adsorbent is carrageenan. Carrageenan is an anionic polysaccharide and is a biopolymer that is widely found in the red algae Rhodophyceae. In this research, the adsorbent of κ-carrageenan beads made from food-grade κ-carrageenan cross-linked with K+ions was successfully made for the adsorption of Pb(II) ions which was confirmed using FTIR. The adsorbent swelling degree was 25.57% in aqua dm and 83.44% in 100 ppm Pb(II) solution. The results of the adsorption kinetics study show that adsorption follows a pseudo-second order kinetic model with a rate constant of 0.03399 g mg−1 min−1 and an adsorption capacity of 5.48 mg/g
Utilization of Freeze-Dried κ-Carrageenan for Methylene Blue Adsorption Iqbal, Muhammad; Prihadi, Az Zahra Utami; Theresia, Claresta Hara; Wahyuni, Sri; Triadhi, Untung; Aryana, Nurhani; Rusnadi, Rusnadi
Jurnal Kartika Kimia Vol 8 No 2 (2025): Jurnal Kartika Kimia
Publisher : Department of Chemistry, Faculty of Sciences and Informatics, University of Jenderal Achmad Yani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26874/jkk.v8i2.992

Abstract

Methylene blue contamination in aquatic environments has become a global issue due to its widespread use in various industries. Methylene blue is a toxic, carcinogenic, and non-biodegradable dye. Adsorption can be employed as one method to mitigate this problem. The use of κ-carrageenan as an adsorbent offers an effective solution because κ-carrageenan is an abundant, easily obtainable, and economical biopolymer with promising adsorption performance. In this study, κ-carrageenan was cross-linked with K+ to form a hydrogel, which was then freeze-dried to produce a macroporous κ-carrageenan adsorbent. Characterization using FTIR confirmed the successful preparation of the adsorbent and the adsorption of methylene blue. SEM images showed changes in surface morphology, indicating successful adsorption. The adsorption process was optimum at pH 5, an adsorbent mass of 0.1 gram, and a contact time of 3 hours. Adsorption followed a pseudo-second-order kinetic model and the Langmuir isotherm model, with a maximum adsorption capacity, qmax of 128.7 mg/g at 328 K. Thermodynamic studies showed that the process was exothermic, became more disorder as a result of an increase in entropy, and occurred spontaneously. These results demonstrate that freeze-dried κ-carrageenan adsorbent has the potential for development in sustainable wastewater treatment technology.
Anthrone-based Dummy Molecularly Imprinted Polymer for the Selective Detection of Fluorene and Phenanthrene in Simulated River Water Pinandita, Aria; Handayani, Nurrahmi; Iqbal, Muhammad; Triadhi, Untung; Rusnadi, Rusnadi; Djajanti, Samitha Dewi; Amran, Muhammad Bachri; Zulfikar, Muhammad Ali
Makara Journal of Science Vol. 30, No. 1
Publisher : UI Scholars Hub

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Abstract

A dummy-template molecularly imprinted polymer (DMIP) was synthesized via precipitation polymerization using anthrone as a template analog for the selective analysis of low-molecular-weight polycyclic aromatic hydrocarbons (PAHs), specifically fluorene and phenanthrene. Styrene, benzoyl peroxide, and ethylene glycol dimethacrylate were employed as the functional monomer, radical initiator, and crosslinking agent, respectively. The synthesized polymers were characterized by Fourier-transform infrared spectroscopy, scanning electron microscopy, and particle size analysis. The imprinting factors were 1.16 and 1.09 for fluorene and phenanthrene, respectively, indicating enhanced affinity of the imprinted sites. High-performance liquid chromatography analysis following DMIP-based solid-phase extraction yielded recoveries of 91.49% ± 3.87% for fluorene and 97.25% ± 2.85% for phenanthrene, demonstrating the DMIP’s potential as an efficient sorbent for selective extraction and quantification of low-molecular-weight PAHs in simulated river water.
Karakteristik Gelatin Tulang Ikan Patin dengan Spektrofotometer FTIR (Fourier Transform Infra Red) ira oktaviani rz; Fathul Jannah; Rahimatul Uthia; Untung Triadhi; Rindia Maharani Putri; Annisa Fauzana
JURNAL FARMASI DAN MAKANAN Vol 8 No 2 (2025): Journal of Pharmacy and Science
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/jops.v8i2.6395

Abstract

Gelatin is widely used in the food, pharmaceutical and cosmetic industries. The demand for gelatin is increasing every year, specifically gelatin from pork and beef is the main source of gelatin on the market. Gelatin from fish has become a better prospect to be developed, yet the manufacture of gelatin using organic materials has not been widely used. One of the natural ingredients that can be used in the manufacture of gelatin is from pineapple skin. Pineapple is one of the fruits that contain acids including citric acid and bromelain enzymes which have a high ability to convert collagen protein into gelatin. In this study, a characterization of the gelatin quality of catfish (Pangasius hypopthalmus) bones was carried out which was soaked with pineapple waste liquid with a time difference of 6 hours (P1), 12 hours (P2), and 24 hours (P3). The quality characteristics of gelatin include proximate characteristics, physicochemical characteristics and identification of functional groups using Fourier Transform Infra Red (FTIR) spectrophotometry. The results of this study indicate the percent yield of each of the results of the immersion P1, P2, and P3 that are 0.36%; 0.42% and 0.71%, the results of the water content are 12.20%,; 15.91%, and 12.08%, the results of the ash content are 34.38%,; 30.03%; and 30.00%, protein content are 32.59%; 20.57%, and 23.99%, the pH results are 5.80; 4.71; and 4.77, the viscosity results are 0.959cP, 0.997 cP, and 0.972 cP, respectively. Based on the FTIR spectrum, the functional groups of catfish bone gelatin that can be identified include the O-H, N-H, C-N, C=O, C-H groups. From the results obtained, it can be concluded that the bone gelatin of catfish (Pangasius hypopthalmus) has not fully met the quality standard of gelatin.
Co-Authors Athiya Anindya Dita Puspitasari Djajanti, Samitha Dewi Fathul Jannah Fauzana, Annisa Felice Pricilla Hilmawan Husaini Ardy ira oktaviani rz Khalisha Rhea Amalia Lia Amelia Tresna Wulan Asri Muhammad Ali Zulfikar Muhammad Bachri Amran Muhammad Iqbal Nurhani Aryana, Nurhani Nurrahmi Handayani Pinandita, Aria Prihadi, Az Zahra Utami Rahimatul Uthia Rindia Maharani Putri Rusnadi Rusnadi Sri Wahyuni Syifabudi Chairurrizky Theresia, Claresta Hara Yuni Eva Kartika