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Zulmiardi, Zulmiardi
Universitas Malikussaleh
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Inovasi Edible Coating Berbasis Pektin Pisang dan Sorbitol dalam Memperpanjang Umur Simpan Anggur Hijau (Vitis Vinifera L.) Rizka Nurlaila; Wiza Ulfa Fibarzi; Gita Padusy Mantoffani; Iqbal Kamar; Yohana Dian Putri; Zulmiardi zulmiardi
Chemical Engineering Journal Storage (CEJS) Vol. 6 No. 02 (2026): Chemical Engineering Journal Storage (CEJS)-April 2026
Publisher : LPPM Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/cejs.v6i02.27507

Abstract

Anggur bersifat mudah rusak dan memiliki umur simpan yang terbatas jika disimpan dalam kondisi segar. Suhu optimal untuk penyimpanan anggur adalah antara -1°C hingga 4°C dengan umur simpan selama 4–6 minggu. Sedangkan jika buah disimpan pada suhu ruang umur simpan hanya mencapai 3-6 hari. Edible coating adalah sebuah metode pelapisan buah menggunakan bahan pelapis yang dapat dikonsumsi dan diaplikasikan secara langsung pada permukaan produk yang berupa lapisan tipis. Metode coating dapat dilakukan dengan metode pencelupan (dipping method). Pada penelitian ini akan mengkaji pengaruh perbandingan konsentrasi pektin pisang (2%,4% dan 6%) dan sorbitol (2% dan 3%) terhadap umur simpan pada buah anggur hijau (vitis vinifera linn). Dari penelitian tersebut diperoleh hasil yang menunjukkan bahwa tingkat konsentrasi memiliki pengaruh signifikan terhadap umur simpan yang diukur dengan tingkat susut bobot, kadar vitamin C dan total padatan terlarut (TPT). Dimana semakin tinggi konsentrasi pelapisan pektin maka susut bobot, vitamin C dan total padatan terlarut (TPT) semakin rendah terhadap lama penyimpanan. Nilai susut bobot paling rendah dimiliki oleh konsentrasi 6% : 2% dengan umur simpan 9 hari yaitu 15,355%, nilai vitamin C paling rendah dimiliki oleh konsentrasi 4% : 3% dengan umur simpan 9 hari yaitu 0,008%, dan nilai total padatan terlarut (TPT) paling rendah dimiliki oleh konsentrasi 6% : 2% dengan umur simpan 9 hari yaitu 6,8°brix.
Optimization Study Of Time And Mass Of Ketapang Fruit Shell Biosorbent in the Methylene Blue Batch Adsorption Process Meriatna Meriatna; Zulmiardi Zulmiardi; Rizka Nurlaila; Suryati Suryati; Fikri Hasfita; Faisal Faisal
International Journal of Engineering, Science and Information Technology Vol 5, No 3 (2025)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52088/ijesty.v5i3.1000

Abstract

Ketapang fruit shell (Terminalia catappa) has shown potential as a low-cost, eco-friendly biosorbent for removing synthetic dyes from aqueous solutions. This study aimed to determine the optimum conditions for contact time and adsorbent mass of ketapang fruit shell in the adsorption of methylene blue dye. The research involved several stages: preparation and chemical activation of the fruit shells, batch adsorption experiments, analysis of adsorption capacity and efficiency, and optimization using the Response Surface Methodology (RSM). Characterization of the adsorbent was conducted using UV-Visible spectroscopy, Fourier Transform Infrared (FTIR) spectrosco-py, and Scanning Electron Microscopy (SEM) to analyze functional groups and surface morphology. The RSM approach was employed to evaluate the interaction effects of contact time and adsorbent mass, as well as to predict the optimal conditions for maximum dye re-moval. The optimum adsorption conditions were achieved at a contact time of 39.15 minutes and adsorbent mass of 0.416 g, resulting in an adsorption capacity of 1.935 mg/g and 100% removal efficiency. The regression model obtained from RSM was: Y= 35.13437  + 334.35597A – 1.67299B + 0.088354AB – 402.98656A² + 0.018207B², with  a coefficient of determination R² = 0.7857 (78.57%), indi-cating a good model fit. Furthermore, the adsorption behavior followed the Freundlich isotherm model, supported by an R² value of 0.787 (78.7%), suggesting multilayer adsorption on a heterogeneous surface. These findings confirm the effectiveness of ketapang fruit shell as a promising adsorbent for methylene blue removal in wastewater treatment applications.
Application of Pisang Awak Bunch-Derived Heterogenous Base Catalyst in Transesterification of Palm Oil into Biodiesel Meriatna Meriatna; Zulmiardi Zulmiardi; Suryati Suryati; Sulhatun Sulhatun; Zukhrufi Dina Nasution; Rahmadhani Rahmadhani
International Journal of Engineering, Science and Information Technology Vol 2, No 1 (2022)
Publisher : Malikussaleh University, Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (301.396 KB) | DOI: 10.52088/ijesty.v2i1.204

Abstract

Biodiesel is an alternative fuel for diesel machine comprosied of alkyl monoesters deriving from vegetable oils or animal fats. Cooking oil is an oil originated from vegetable or animal fat which has been priorly purified, where it appears in liquid form at room temperature and is usually used to fry food ingredients. Heterogenous catalyst is a catalyst present in different phase with the reagent in a reaction it catalyzes. Kalium content in banana in a banana bunch is sufficiently high reaching 94.4%. The aim of this study was to utilize banana bunch which has been priorly ashed using furnace at 700°C for 4 hours, thereafter, applied as a heterogenous catalyst in a the preparation process of biodiesel from cooking oil. Processing variables investigated in this research included the influences of the number of catalyst (3, 4, 5, 6, and 7%) and molar rasio of oil and methanol (1:5, 1:6, 1:7, 1:8, and 1:9) against the properties of produced biodiesel, namely density, viscosity, and water content which later compred with Indonesian standard (SNI). From the study, it was obtained maximum yield of 90.97% with methanol:oil rasio of 1:7 at processing temperature of 60°C with reaction time of 90 minutes and catalyst as much as 3 % w/w. The characteristics of the cooking oil-based biodiesel obtained from the a reaction with oil: methanol rasio of 1:6 and catalyst as much as 3% w/w were density 850 kg/m3 and viscosity 621 mm2/s. This research showed that the obtained biodiesel characteristics had been sufficient according to the SNI, and the use of calcinated banana bunch was very potential in the production of biodiesel acting as solid catalyst person.
Co-Authors Abdul Rahman Abubakar Dabet Adi Setiawan Agam Muarif Ahmad Nayan Alchalil Alchalil Alvira Rosa Asnawi Asran Asran Athiyah Rana Auliani Auliani Auliani Auliani, Auliani Azhar Syahputra Azhari, Nur Jannah Bakhtiar Burhanuddin Chairunnisa Chairunnisa Devi, Sri Marlia Dion Aidil Putra Dwi Dear Asrianda Damanik Eddy Kurniawan Eka Intan Kumala Putri Ezwarsyah Faisal Faisal Fajar Sidiq Seregar Fajar, Aidil Fatimah Zahra Ferri Safriwardy Ferry Safriwardi Fibarzi, Wiza Ulfa Fikri Hafita Fikri Hasfita Fikri Hasfita Fikri Hasfita Fitriani Fitriani Gita Padusy Mantoffani Hadi, Dodi Alfarasi Hanie, Nawardah Hery Widijanto Ibrahim, Ishak Iqbal Kamar Ishak Ibrahim Jalaluddin Kamar, Iqbal Kurniawan, Meutia Leni Maulinda, Leni Leni, Maulinda Lukman Hakim Lukman Hakim Lutvia, Faiza Masrullita Masrullita Masrullita Masrullita, Masrullita Maulana, Muhammad Zikri Meriatna Meriatna Meriatna Muhammad Habibi Muhammad Habibi Muhammad Muhammad Muhammad Muhammad Muhammad Nuzan Rizki Muhammad Sayuthi Muhammad Zakaria Muhammad, M Mulyawan, Rizka Munawar Khalil Nasrul ZA, Nasrul Nasrul Za, Nasrul Za Novi Sylvia Nurlaila, Rizka Panjaitan, Muhammad Ishak Idrus Pradesti, Salsa Putra, Reza Rahmadhani Rahmadhani Raudhatul Ulfa Rianda, Rizki Rina Afriani Rizka Mulyawan Rizka Nurlaila Rizky Iskandar Rosdiana Rosdiana Safrida, Riana Safriwardi, Ferri Salim, Muhammad Yahdi Sanda Mulia Utari Selamat Meliala Sinaga, Ahmad Roihan Siti Khairunnisa Tambunan Sofiyani, Nurwardina Sulhatun Sulhatun Suri Atika Suryadi, S Suryati Suryati Suryati Suryati Suryati Syamsul Bahri Syukriah Syukriah Syukriah, Syukriah Taufiq Taufiq Teuku Multazam Trisna Trisna, Trisna Wiza Ulfa Fibarzi Wusnah Wusnah Wusnah, Wusnah Yasir Amani Yohana Dian Putri Yudistira Yudistira Yusuf, Edy Zainuddin Ginting Zukhrufi Dina Nasution Zulnazri, Z Zuraida Zuraida