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Titi Susilowati
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Pengaruh Filler Nano Precipitated Calcium Carbonate dan Gliserol Terhadap Bioplastik Pati Jagung , Resa Damayanti; Meldi Ramahdani Intan Pertiwi; Titi Susilowati; Caecilia Pujiastuti; Susilowati
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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

Abstract

Precipitated calcium carbonate (PCC) with a size of less than 100 nm has been shown to improve the hardness and strength of a material, making it suitable as a filler in the production of bioplastics. Biodegradable plastics are plastics that can be used like conventional plastics, but can be broken down by microorganisms after use, making them environmentally friendly. The aim of this study is to investigate the effect of adding nanoprecipitated calcium carbonate (PCC) filler and glycerol on the mechanical properties and biodegradation of corn starch-based bioplastics, and to produce biodegradable plastic that meets the Indonesian National Standard (SNI). The method used is melt intercalation to produce bioplastics from corn starch with the addition of nano-PCC and glycerol. The best results were obtained with 12% Nano-PCC and 20% glycerol, which gave a tensile strength of 3.54 MPa, 12% Nano-PCC and 50% glycerol, which gave an elongation percentage of 23.7%, and 4% Nano-PCC and 60% glycerol, which gave 100% biodegradation within 30 days. A higher concentration of Nano-PCC filler increases the tensile strength, improves the elongation percentage and reduces the degradation rate of the plastic. A higher concentration of glycerol decreases tensile strength, increases elongation and increases the degradation rate of the plastic.
Optimizing the Cellulose Hydrolysis Process from Petioles and Midribs of Kepok Banana Trees into Glucose Aisya, Maimunah Nurul; Ardiani, Fira; Susilowati, Titi
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 9 No. 3 (2025)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29165/ajarcde.v9i3.808

Abstract

Agricultural waste from banana petioles and midribs represents an underutilized lignocellulosic biomass, particularly in Bojonegoro Regency, East Java. This study aims to optimize the cellulose hydrolysis process from this waste into glucose using sulfuric acid as a catalyst via the Response Surface Methodology (RSM). This study used the most abundant banana variety in the area, the Kepok banana. The variables tested included temperature (70–110°C) and reaction time (20–100 minutes). The glucose content of the hydrolysis product was measured using a sugar refractometer. The glucose content data were then converted to per cent cellulose conversion, which served as the basis for the optimization process. The results showed that temperature and time significantly influenced glucose conversion, with optimal conditions at 110°C for 100 minutes. The optimization model demonstrated a good fit, with an R² value exceeding 0.95. This research confirms the potential of utilizing local banana petiole and midrib waste as a glucose source, providing a scientific basis for sustainable, large-scale production. Contribution to Sustainable Development Goals (SDGs):SDG 7-Affordable and Clean Energy)SDG 9 – Industry, Innovation, and InfrastructureSDG 12 - Responsible Consumption and ProductionSDG 13 - Climate ActionSDG 15 - Life on Land
Sintesa Dan Karakterisasi Arang Aktif Dari Batang Tembaku Terkativasi Hcl Dengan Modifikasi Tio2 Dengan Proses Sonikasi Nopiyanti, Wiwin; Latif, Ahmad Sofwan; Kurniati, Ely; Susilowati, Titi; Saputro, Erwan Adi
BRILIANT: Jurnal Riset dan Konseptual Vol 10 No 2 (2025): Volume 10 Nomor 2, Mei 2025
Publisher : Universitas Nahdlatul Ulama Blitar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28926/briliant.v10i2.2024

Abstract

Activated carbon is an adsorbent commonly used in adsorption methods for waste treatment due to its high adsorption capacity and simple preparation. Nevertheless, activated carbon also has limitations, such as low adsorption efficiency, which necessitates the use of supporting materials to resolve these weaknesses. TiO₂ a semiconductor material used in photocatalysis for waste treatment, has the advantage of reducing contaminants through decomposition processes. Nevertheless, TiO₂ also has disadvantages, such as a low adsorption capacity and a tendency to agglomerate. To resolve the limitations of both activated carbon and TiO₂, a method of combining these materials is employed. The addition of TiO₂ to activated carbon through sonication disperses TiO₂ particles on the surface of the activated carbon particles, filling the pores inside the activated carbon structure and creating additional micro and mesopores. This process enhances the porosity and surface area of the activated carbon. This study is intended to determine the effect of TiO₂  addition ratio and HCl activator concentration on the quality of the activated carbon. The research methodology involves activating the carbon with HCl and addition of  TiO₂  in specific ratios through sonication. The best results were obtained with a treatment using 1 M HCl concentration and  5% TiO₂ addition ratio, which resulted in activated carbon with a surface area of 4257 m²/g. The addition of TiO₂ to HCl-activated carbon significantly increases the surface area compared to activated carbon without TiO₂.
Perbandingan Efektivitas Ekstraksi Pektin dari Kulit Durian dengan Bantuan Gelombang Ultrasonik dan Metode Konvensional Puspita, Selvia Indah; Sekarlita, Yovita; Kurniati, Ely; Susilowati, Titi; Billah, Mu'tassim
Jurnal Fisika Unand Vol 13 No 3 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.3.427-432.2024

Abstract

Tujuan dari penelitian ini adalah untuk membandingkan ekstraksi pektin kulit durian menggunakan gelombang ultrasonik dan konvensional; untuk mengetahui pengaruh pH larutan HCl dan waktu ekstraksi terhadap yield pektin dan kadar metoksil. Metode penelitian ini menggunakan ekstraksi dengan bantuan gelombang ultrasonik dan konvensional pada frekuensi 20 KHz dan suhu 70oC dengan variasi waktu ekstraksi yaitu 15; 45; 75 menit serta pH larutan HCl 1,5;2,5;3,5. Yield pektin tertinggi diperoleh dengan menggunakan bantuan gelombang ultrasonik pada frekuensi 20 KHz, suhu 70oC selama 75 menit dan pH larutan HCl 1,5 sebesar 7,081% sementara menggunakan metode konvensional dengan kondisi suhu, waktu ekstraksi, dan pH larutan HCl yang sama sebesar 1,8646%. Kadar metoksil terendah diperoleh dengan menggunakan bantuan gelombang ultrasonik pada frekuensi 20 KHz, suhu 70oC selama 15 menit dan pH larutan HCl 1,5 sebesar 5,9% sedangkan menggunakan metode konvensional dengan kondisi suhu, waktu ekstraksi, dan pH larutan HCl yang sama sebesar 6,11%. 
Pemanfaatan Limbah Jerami Padi dalam Pembuatan Edible Film (Kajian Penambahan Lignin dan Sorbitol) E. P. Putra, Ringgo; R. Santoso, Cakrasena; Susilowati, Titi
Jurnal Indonesia Sosial Sains Vol. 4 No. 02 (2023): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v4i02.782

Abstract

Rice straw is a very abundant lignocellulose agricultural waste in Indonesia. This waste is generally used as much as 31% for animal feed, 7% for industrial purposes, and 62% burned in rice fields. This burning can cause respiratory disorders such as ARI and cancer. Lignocellulose itself is a polysaccharide consisting of lignin, cellulose, and hemicellulose. The lignin content in rice straw can be used for the production of edible film, so as to increase its usefulness and reduce the percentage of incineration of this waste in rice fields. Edible film is a thin layer made from edible materials and laid between food components. The main components constituting edible film are hydrocloids/lipids/composites, fillers, and plasticizers. The use of the addition of a plasticizing agent is to make edible film elastic. The use of this filler is to modify the edible nature of the film you want to produce. Examples of oligomeric substances and fillers are sorbitol and lignin. In this study, sorbitol and lignin materials were added to cellulose biomass materials derived from rice straw. These materials are stirred using a magnetic stirrer at a speed of 400 rpm and a temperature of 65oC for 25 minutes before the mixture is printed on a glass plate. After the edible film is printed and dried, an analysis of tensile strength and degradation of the edible film is carried out. The results showed a decrease in the tensile strength value of edible film with the lowest downward trend in the addition of 3% lignin lignin and 9 ml sorbitol. The results of the % degradation analysis show that the value of % degradation tends to increase without the addition of lignin.
Co-Authors , Resa Damayanti Aisya, Maimunah Nurul Annisa Kurnia Pratiwi Ardiani, Fira Arif Dharmawan, Wahyu Billah, Mu'tassim Billah, Mu’tasim Caecilia Pujiastuti Darmawan, Fairus Rifki Priangga Demy Ayu Candra E. P. Putra, Ringgo Ely Kurniati Enny Karti Basuki Erwan Adi Saputro Fitriasari, Rima Hajati, Tatiek Sri Ir Latifah Kurniati, Ely L.Urip Widodo, Yohandrik Novel Karaman Latif, Ahmad Sofwan Luluk Edahwati Meldi Ramahdani Intan Pertiwi Melita, Lusia Nada Mu'tassim Billah Nopiyanti, Wiwin Nurentama, Fitrian Puspita, Selvia Indah Putri Anggraini, Putri R. Santoso, Cakrasena Ramadhan, Handi Restiana Wisnu Aryati Saktihono, Putri Indrian Sekarlita, Yovita Selvia Indah Puspita Silvana Dwi Nurherdiana Sri Muljani Sri Rejeki Sri Winarti SRIE MULJANI Sudaryati HP Sultan Tora Fattahu Majid Suprihatin Suprihatin Suprihatin Susilowati Sutaryat Trisnamansyah Sutiyono sutiyono sutiyono Syaodih, Cahya Tri Rini Erlita Widayanto, Galih Suci Wulandari, Diah Mahita Nur Yovita Sekarlita