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All Journal EKSAKTA: Journal of Sciences and Data Analysis FLUIDA Jurnal Pengabdian Kepada Masyarakat (Mediteg) Serambi Engineering
Ari Marlina
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Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Social Sciences

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Pengaruh Konsentrasi Gliserol dalam Edible Coating Tepung Biji Nangka dengan Penambahan Plasticizer Gliserol Emmanuela Maria Widyanti; Nancy Siti Djenar; Ari Marlina; Endang Widiastuti; Irwan Hidayatulloh; Intan Puspitarini; Dhara Firdausa; Lidya Elizabeth
Fluida Vol 15 No 2 (2022): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v15i2.4419

Abstract

Tomatoes are horticultural plants that are easily damaged, need to be coated with a food grade edible coating. The basic ingredients that can be used are polysaccharides, derived from jackfruit seed flour, then glycerol plasticizer is added to improve the brittle nature of the edible coating. The maximum glycerol added was carried out with the following concentration variations: control (without glycerol), 1.5%, 2.0%, 2.5%. The analysis carried out included testing the respiration rate and weight loss in tomato storage for 6 days. In determining the respiration rate, an experiment was carried out by flowing 1 L/minute of air for 2 minutes which had been passed through a saturated Ca(OH)2 solution flowed into a jar containing tomatoes, passing through a 0.05 N NaOH solution added 0.1% phenophthalein indicator and titrated with HCl 0.05 N until the red color disappears and the weight loss decreases on tomatoes coated with edible coating. The results obtained were the lowest decrease in respiration rate at 2% glycerol concentration of 0.137 mgCO2/kg.hour and the lowest decrease in weight loss at 2.5% glycerol concentration of 1.913%.
Efficiency of Tannin Reduction in Stevia Extract by Coagulation with Lime and Adsorption with ion Exchange Resin Polban, Riniati; Sudrajat Harris Abdulloh; Endang Widiastuti; Ari Marlina
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 6, ISSUE 1, April 2025
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/EKSAKTA.vol6.iss1.art2

Abstract

Stevia, a plant commonly used as a natural sweetener, has the potential to be used as a sugar substitute because the stevioside content provides high sweetness and has a low caloric value. On the other hand, stevia contains tannins that can give it a bitter taste. To reduce the tannin content in stevia extract, tannin is coagulated with calcium metal ions from lime and then passed into a ion exchange resin column. The purpose of this study was to determine the effect of lime concentration on the reduction of tannin levels and the efficiency of resin columns in reducing tannin levels. However, it is expected that the extract still has a high level of sweetness. Extraction was carried out on dried stevia leaves using water solvent in a ratio of 1:30 (w/v). After coagulation with lime, the extract was filtered and then passed to the resin column to bind the remaining calcium ions. The concentration of lime was varied: 0,5; 1; 1,5; 2; 2,5; 3; 4; 5; 6 %. The tannin content in the extract, before and after the process was tested by spectrophotometric method using Folin Ciocalteu reagent. The sweetness level of the extract was tested by measuring the % brix value using a brix refractometer. The results showed that the high efficiency of significant tannin content reduction was 99.98% with a minimum sweetness level reduction of 47.1% at 2% (w/v) lime addition.
Development of a Smart IoT-Integrated Watering System for Moth Orchid (Phalaenopsis amabilis) Cultivation in the SMASHTHETIC Greenhouse Permanasari, Ayu Ratna; Harita Nurwahyu Chamidy; Bevi Lidya; Ari Marlina; Endang Widiastuti; In Jumanda Kasdadi
Jurnal Serambi Engineering Vol. 11 No. 1 (2026): Januari 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

A greenhouse is a controlled environment designed to enhance plant productivity by regulating microclimatic conditions. However, in many greenhouse systems, the irrigation process is still performed manually, resulting in suboptimal water use efficiency and inconsistent watering schedules. The SMASHTHETIC greenhouse serves as a cultivation facility for the moth orchid (Phalaenopsis amabilis), which requires precise control of substrate moisture and ambient humidity to ensure optimal growth and flowering. This study aims to design and implement an automatic irrigation system based on Arduino and the Internet of Things (IoT) to improve irrigation efficiency in the SMASHTHETIC greenhouse. The system consists of a soil moisture sensor, Arduino microcontroller, Wi-Fi module (ESP8266/ESP32), and actuators such as a water pump and solenoid valve to regulate water flow. IoT integration enables real-time monitoring and remote control via web and smartphone applications. Experimental results show that the system automatically adjusts watering frequency and duration based on soil moisture data, providing convenience for users and reducing manual intervention. Therefore, this study demonstrates that the integration of Arduino and IoT technologies in greenhouse irrigation supports the development of smart agriculture practices that are more efficient, sustainable, and productive.
Penggunaan Pewarna Alami Untuk Ecoprint Dalam Meningkatkan Ekonomi Kreatif yang Berkelanjutan di Ciwaru Desa Arjasari Amalia Zia Salma; Riniati; Endang Widiastuti; Ari Marlina; Bevi Lidya; Ratu Fenny Muldiani
Jurnal Pengabdian Kepada Masyarakat (MEDITEG) Vol. 10 No. 2 (2025): Jurnal Pengabdian Kepada Masyarakat (MEDITEG)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Tanah Laut (Politala)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/mediteg.v10i2.386

Abstract

Kampung Ciwaru, Desa Arjasari Kabupaten Bandung merupakan kawasan yang sangat potensial dengan sumber daya tanaman untuk ecoprint. Kegiatan Pengabdian Kepada Masyarakat (PKM) di daerah ini bertujuan untuk pemberdayaan masyarakat dengan mengajarkan teknik ecoprint menggunakan pewarna alami lokal. Pelatihan ini melibatkan 15 peserta sebagai perwakilan kelompok karang taruna. Beberapa tanaman lokal yang  di eksplor untuk pewarna alami ecoprint di antaranya: daun kopi, daun mangga, daun jati, daun ketapang dengan variasi warna yang dihasilkan: hijau, merah dan abu-abu. Sedangkan motif daun yang diunggulkan dari daerah ini yaitu  daun singkong, daun afrika, daun jati serta bunga-bunga yang banyak tersedia di sekitar. Indikator hasil terukur meliputi peningkatan keterampilan peserta, pemahaman yang meningkat 74,16% setelah evaluasi kegiatan serta adanya 50 produk ecoprint yang layak jual berupa kain, pasmina, tas, outer dan topi yang dipasarkan melalui galeri "Ciwaru Ecoprint".  Kontribusi keberlanjutan terletak pada pengembangan ekonomi kreatif ramah lingkungan, memperkuat ketahanan ekonomi melalui kreativitas dan inovasi berbasis ecoprint.
Co-Authors Amalia Zia Salma Bevi Lidya Dhara Firdausa Elizabeth, Lidya Harita Nurwahyu Chamidy Hidayatulloh, Irwan In Jumanda Kasdadi Intan Puspitarini Muldiani, Ratu Fenny Nancy Siti Djenar Permanasari, Ayu Ratna Polban, Riniati Riniati Sudrajat Harris Abdulloh Widiastuti, Endang Widyanti, Emmanuela Maria