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All Journal Reaktor JURNAL KIMIA SAINS DAN APLIKASI Jurnal Bahan Alam Terbarukan Seminar Nasional Teknik Kimia Kejuangan Elkawnie Indonesian Journal of Science and Technology Konversi Info-Teknik Buletin Profesi Insinyur International Journal of Advance Tropical Food (IJATF) Jurnal Teknik Kimia dan Lingkungan Bulletin of Chemical Reaction Engineering & Catalysis Jurnal Sains Materi Indonesia JURNAL REKAYASA KIMIA & LINGKUNGAN
Iryanti Fatyasari Nata, Iryanti Fatyasari
Department Of Chemical Engineering, Faculty Of Engineering, University Of Lambung Mangkurat
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology

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Bimetallic Ru-Sn as Effective Catalysts for the Selective Hydrogenation of Biogenic Platform Chemicals at Room Temperature Azzahra, Atina Sabila; Dewi, Heny Puspita; Mikrianto, Edi; Sembiring, Kiky Corneliasari; Sunnardianto, Gagus Ketut; Nata, Iryanti Fatyasari; Rodiansono, Rodiansono; Jayanudin, Jayanudin
Bulletin of Chemical Reaction Engineering & Catalysis 2023: BCREC Volume 18 Issue 4 Year 2023 (December 2023)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20067

Abstract

Supported bimetallic ruthenium-tin (denoted as Ru-Sn(x); x = molar ratio of Ru/Sn) catalysts were examined for room temperature (RT) hydrogenation of biogenic platform chemicals of levulinic acid (LA) to g-valerolactone (GVL). Six types of metal oxide support c.a. Nb2O5, TiO2, ZnO, ZrO2, g-Al2O3, active charcoal (AC), were employed as the support for Ru-Sn(x). Ru-Sn(3.0)/Nb2O5 (Ru/Sn = 3.0) that reduced at 500 oC demonstrated the highest yield of GVL (98%) at 30 oC, 30 bar H2 for 3 h. The increase in Sn loading amount (Ru/Sn = 1.5) resulted in decreasing of LA conversion (83%) under the same reaction conditions. Among the studied supported Ru-Sn catalysts, Nb2O5 and ZnO supports exhibited better catalytic performances than that other for RT hydrogenation of LA and various biogenic platform chemicals. The Ru-Sn(3.0)/Nb2O5 catalyst was characterized by means of various adsorption and spectroscopic techniques. The Ru-Sn(3.0)/Nb2O5 catalyst was found to be reusable without any significant loss of its activity. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA  License (https://creativecommons.org/licenses/by-sa/4.0). 
Hydrogel Films Derived Water Hyacinth Stems And Banana Peels Pectin: Tensile Performance And Swelling Ability Retno Febriyanti; Muthia Elma; Iryanti Fatyasari Nata; Ni Kadek Devi Ananda Saraswati; Paskah Fransiska Afrida Simatupang
Elkawnie Vol. 9 No. 1 (2023)
Publisher : Faculty of Science and Technology Universitas Islam Negeri Ar-Raniry

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/ekw.v9i1.16419

Abstract

Abstract: Hydrogel films are sheet materials that form a 3D network structure and can be fabricated from one or more constituent materials. A combination of two natural polymers, namely carboxymethyl cellulose (CMC) derived from water hyacinth stems (WHS) and banana peel pectin, constructs these hydrogel films that are used as coating materials for food packaging. Citric acid replenishment to stabilize the cross-linking of the hydrogel films. This study is intended to determine the effect of WHSCMC, pectin, and citric acid on the swelling abilities and tensile performances of hydrogel films. CMC synthesis begins with harvesting water hyacinth stems obtained from the Gambut area waters in South Kalimantan, Indonesia. Then carried out the extraction and bleaching processes of cellulose. Cellulose extract powder was processed in two stages, videlicet alkalization and carboxymethylation, to obtain cellulose derivatives in the form of CMC. The results of WHSCMC were analyzed using FT-IR (Fourier Transform Infra-Red) and compared with commercial CMC. Giving results with significant similarity at the peaks of 998 cm-1 and 1015 cm-1, specifically the ether glycosidic group. Fabrication of hydrogel films combines WHSCMC and banana peel pectin with various compositions (100:0, 90:10, 70:30, and 50:50 wt.%) with added citric acid as an aid for crosslinking at various concentrations (5, 10, and 15 wt.%). Hydrogel films sample 70:30, 5 wt.% (CPc-5) gave optimum results from the characterization of hydrogel films related to food packaging application coatings in the form of swelling ability of 6,647 g/g, tensile strength of 11,770 MPa, and elongation test of 11,896%. FT-IR analysis of CPc-5 indicates that there are carboxyl groups (COO-) and hydroxyl groups (-OH), which play a role in the formation of cross-links and hydrophilic properties.Abstrak: Film hidrogel merupakan material lembaran yang membentuk struktur jaringan 3D dan dapat dibuat dari satu atau lebih bahan penyusun. Kombinasi dua polimer alami, yaitu karboksimetil selulosa (CMC) yang berasal dari batang eceng gondok (BEG) dan pektin kulit pisang membentuk film hidrogel yang digunakan sebagai bahan pelapis kemasan makanan. Penambahan asam sitrat untuk menstabilkan ikatan silang film hidrogel. Penelitian ini bertujuan untuk mengetahui pengaruh CMC BEG, pektin, dan asam sitrat terhadap kemampuan pembengkakan dan kinerja kekuatan tarik film hidrogel. Sintesis CMC diawali dengan pemanenan batang eceng gondok yang diperoleh dari perairan daerah Gambut, Kalimantan Selatan-Indonesia. Kemudian dilakukan proses ekstraksi dan pemutihan selulosa. Serbuk ekstrak selulosa diproses dalam dua tahap yaitu alkalisasi dan karboksimetilasi untuk mendapatkan turunan selulosa berupa CMC. Hasil CMC BEG dianalisis menggunakan FT-IR (Fourier Transform Infra-Red) dan dibandingkan dengan CMC komersial. Hasil yang diperoleh adalah adanya kemiripan pada puncak 998 cm-1 dan 1015 cm-1, yaitu gugus eter glikosidik. Pembuatan film hidrogel mengkombinasikan CMC BEG dan pektin kulit pisang dengan berbagai komposisi (100:0, 90:10, 70:30, dan 50:50 % berat) dengan penambahan asam sitrat sebagai pengikat silang dengan berbagai konsentrasi (5, 10, dan 15 % berat). Sampel film hidrogel 70:30, 5% (CPc-5) memberikan hasil optimum dari karakterisasi film hidrogel terkait pelapis aplikasi kemasan makanan berupa uji kemampuan pembengkakan sebesar 6,647 g/g, kuat tarik 11,770 MPa, dan elongasi sebesar 11,896%. Analisis FT-IR terhadap CPc-5 menunjukkan adanya gugus karboksil (COO-) dan gugus hidroksil (-OH) yang berperan dalam pembentukan ikatan silang dan sifat hidrofilik.
Development of antioxidant-rich edible film using eggshell and tapioca flours with kelakai (Stenochlaena palustris) extract Yulia Nurul Ma'rifah; Mariatul Adawiyah; Sigit Ariwibowo; Iryanti Fatyasari Nata; Rinna Juwita; Duc-Thang Vo
Konversi Vol 14, No 1 (2025): APRIL 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i1.22280

Abstract

One of the major challenges in the food industry in the limited shelflife products. A promising approach to address this issue is the use of edible films-thin, consumable layers that protect food from environmental factors such as moisture, oxygen, and humidity. This study aimed to evaluate edible films based on varying ratios of chicken eggshell flour and tapioca flour, determine the optimum concentration of Kelakai (Stenochlaena palustris) extract as an antioxidant source, and assess the films’ physical, chemical, and application properties. Edible films were prepared using eggshell flour (0-30% w/w), tapioca flour (5 g), distilled water (93.5 mL), Kelakai extract (0-10% v/v), and glycerol (1.5 g). The mixture was heated to ±96°C at 1000 rpm for 40 minutes, cast into 20 × 10 cm molds, and dried at 50°C for 24 hours. The best formulation—10% eggshell flour with 5% Kelakai extract—produced a film with 0.174 mm thickness, 1.5 MPa tensile strength, 27.4% elongation, and water vapor transmission rate of 10.0278 g/m²·h. FT-IR analysis revealed C-H, O-H, and C=O functional groups. Antioxidant activity showed 5.19% scavenging activity after 10 minutes. The film successfully preserved sausage for 7 days, demonstrating its potential to extend shelf life and serve as an eco-friendly packaging alternative.
Valorization of cassava peel starch into functional liquid glucose via acid-catalyzed hydrolysis using sulfonated carbon catalyst and red ginger (Zingiber officinale var. rubrum) extract Indah Retno Wulandary; Noor Laila; Yuniza Shentiya Dewi; Yulia Nurul Ma'rifah; Iryanti Fatyasari Nata; Ahmad Farhan Hadtimin
Konversi Vol 14, No 2 (2025): OCTOBER 2025
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/k.v14i2.24329

Abstract

The growing gap between sugar consumption and domestic product in Indonesia Highlights the need for alternative sweeteners derived from renewable resources. This study investigates the synthesis of functional liquid glucose from cassava peel starch through hydrolysis catalyzed by sulfonated carbon derived from palm empty fruit bunches (TKS-SO3H) and the enhancement of its antioxidant properties by red ginger extract. The TKS-SO3H catalyst was prepared via carbonization at 350 C followed by sulfonation at 180 C, yielding an H+ ion concentration of 1.745 mmol/g. Hydrolysis was conducted at 100 C for 60 minutes with a catalyst loading of 5% (b/v) and starch concentration ranging from 2.5 to 7.5%. The optimum glucose concentration of 4.14 mg/mL was achieved at 5% starch concentration, demonstrating the effective catalytic performance of TKS-SO3H. subsequently, liquid glucose was combined with red ginger extract in various volume ratios (1:1-1:4 v/v) to assess antioxidant capacity using the DPPH radical scavenging assay. The formulation with a 1:4 glucose-to-ginger ratio exhibited the highest scavenging activity of 48.63% after 10 minutes, indicating a significant enhancement of functional properties. The findings suggest that cassava peel, an agricultural by-product, can be utilized as a sustainable feedstock to produce bifunctional liquid glucose using an environmentally benign heterogeneous catalyst, contributing to the development of value-added and health-oriented sweeteners.
Co-Authors Abdul Ghofur Aceng Lesti Agata Febby Ayuningtyas Agita Purnawilda Agus Mirwan Ahmad Farhan Hadtimin Aladin Eko Purkuncoro Anis Artiyani Asnia, Mira Azzahra, Atina Sabila Chairul Irawan Choir Muizliana Choir Muizliana, Choir Denis Yanuardi Dewi, Heny Puspita Dian Sylvana Ansari Dian Sylvana Ansari, Dian Sylvana Doni Rahmat Wicakso Duc-Thang Vo Edi Mikrianto Emil Zacky Effendi Fadhillah, Hilda Nur Fitri Halisyah Fitriannoor Fitriannoor Gita Cristy Helda Niawati Helda Niawati, Helda Hendrawan, Rangga Dwi Herlina Herlina Herlina Herlina Hesti Wijayanti Hesti Wijayanti Hesti Wijayanti I Putu Andika Putra I Putu Andika Putra, I Putu Andika Indah Retno Wulandary Jayanudin Jayanudin Jefri A. Simanjuntak Jefriadi Jefriadi Jody Hartoto Prayogo Jody Hartoto Prayogo, Jody Hartoto Kiky Corneliasari Sembiring Lalu Mustiadi Madani, Zikri Daffa Aulia Mariatul Adawiyah Marisa, Rosmasari Masrurotul Ajiza Meda Nur Anisa Meilana Dharma Putra Mira Asnia Mira Pangesti, Mira Misnawati Misnawati Muhammad Daffa Salaahuddin Muhammad Jauhar Mahdi Muthia Elma Nanik Astuti Rahman Ni Kadek Devi Ananda Saraswati Noor Laila Noor Laila Nooryantini Nooryantini Nor Asiyah Norlina Norlina, Norlina Paskah Fransiska Afrida Simatupang Primata Mardina Retno Febriyanti Ridhayanti Mu'minah Rinna Juwita Rinna Juwita Rinna Juwita Rinny Jelita Ristiarini, Susana Rita Khairina Rodiansono Rodiansono Rosmasari Marisa Selly Agustina Sigit Ariwibowo Sunnardianto, Gagus Ketut Syamsul Ma"arif Putera Ukhrawi Sylvera Bella Priscilla Toni Arianto Toni Arianto, Toni Tri Dianpalupidewi Tun Sriana Tun Sriana Yudhi Christian Hariady Yuli Ristianingsih Yulia Nurul Ma'rifah Yulia Nurul Ma'rifah Yulian Firmana Arifin Yuniza Shentiya Dewi Yuniza Shentiya Dewi Yuniza Shentiya Dewi Zakaria Zakaria