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All Journal Jurnal Pangan dan Gizi Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences METAMORFOSA Journal of Biological Sciences Cannarium (Jurnal Ilmu-ilmu Pertanian) Jurnal Pangan dan Agroindustri Jurnal Keteknikan Pertanian Tropis dan Biosistem Jurnal Ilmiah Universitas Batanghari Jambi JITIPARI (Jurnal Ilmiah Teknologi dan Industri Pangan UNISRI) AGRITEKNO, Jurnal Teknologi Pertanian Jurnal Teknologi Pertanian Andalas Journal of Tropical AgriFood Agrica: Journal of Sustainable Dryland Agriculture Spizaetus: Jurnal Biologi dan Pendidikan Biologi Jurnal Teknologi Pangan CHEMTAG Journal of Chemical Engineering JURNAL AGROTEKNOSAINS Jurnal Riset Teknologi Pangan Dan Hasil Pertanian (RETIPA) Journal of Food and Agricultural Product Jurnal Ilmiah Pangan Halal Rona Teknik Pertanian Jurnal Ilmu-Ilmu Pertanian
Jatmiko Eko Witoyo
Institut Teknologi Sumatera
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Other

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Proximate Analysis and Exponential Model of Activated Carbon from Durian (Durio zibethinus) Peel from South Lampung: Analisis Proksimat dan Model Exponensial Karbon Aktif dari Kulit Buah Durian (Durio zibethinus) Asal Lampung Selatan Pangestuti, Martasari Beti; Witoyo, Jatmiko Eko; Kurniawan, Randy Yusuf; Cavendish, Amedeo
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Durian (Durio zibethinus) peel is a major agro-waste with high lignocellulosic content and functional groups, making it a promising precursor for activated carbon. This study synthesized and characterized activated carbon from South Lampung durian peel using potassium hydroxide (KOH) activation at 0 M, 1 M, and 2 M. Proximate analysis (moisture and ash content, volatile matter, fixed carbon) was conducted, and exponential regression models were developed to examine the effect of KOH concentration. Results showed significant effects (p < 0.05) of KOH on all parameters. Moisture decreased from 59.23±2.02% to 7.19±3.27%, ash from 6.29±0.31% to 1.45±0.52%, and volatile matter from 7.81±0.45% to 2.09±0.02%, while fixed carbon increased from 84.88±0.31% to 89.72±0.52%. All parameters followed exponential trends with high R² values, indicating strong model fit. These findings confirmed that KOH activation improves activated carbon quality, and exponential models provide predictive insight. Therefore, durian peel from South Lampung is promising for high-quality activated carbon production.
Exploring the Physicochemical Properties of Moringa oleifera Leaf Powder from Lampung Selatan, Indonesia: Eksplorasi Karakteristik Fisiko-Kimia Bubuk Daun Kelor Asal Lampung Selatan, Indonesia Witoyo, Jatmiko Eko; Afifah, Amalia; Saraswati, Ayu Rahayu; Ristianti, Wigi Putri; Sari, Yanti
Journal of Tropical Agricultural Engineering and Biosystems - Jurnal Keteknikan Pertanian Tropis dan Biosistem Vol. 13 No. 3 (2025): December 2025
Publisher : Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

Moringa oleifera leaves (MOL) are one of the food ingredients that have complete nutritional content at an affordable price. These leaves are found in several regions of Indonesia, including Lampung Selatan. However, a notable drawback of MOL is its limited shelf life, and it is commonly transformed into Moringa oleifera leaf powder (MOLP) to enhance longevity. This study aims to explore the physicochemical properties of MOLP from Lampung Selatan, which has not been widely examined. This approach used in this study was quantitative descriptive. The results showed that the MOLP from Lampung Selatan had showed  L* value of 59.36, a* value of -8.05, and b* value of 23.36. It additionally revealed 21.10% protein, 3.49% fat content, 0.73% ash content, 5.83% moisture content, 68.84% carbohydrate content, 6.87% crude fiber content, and 15.47% starch. These results indicate that the MOLP from Lampung Selatan had a green colour, high in protein and crude fiber content, and low in fat and starch content. Therefore, MOLP from Lampung Selatan exhibits encouraging potential as a functional food ingredient in the development of food products requiring a high protein and fiber content at an affordable price.
Co-Authors Aditya Wahyu Nugraha Afifah, Amalia Alvianto, Dikianur Bambang Dwi Argo Bare, Yohanes Brahmanti, Ajeng Astrini Cavendish, Amedeo Devita, Wilda Harlia Dewi Ratih Tirto Sari Endo Pebri Dani Putra Eva Ni’maturohmah Gabriella Chandrakirana Krisnamurti Hamaisa, Atika Hyldegardis Naisali Jaya Mahar Maligan Khoirina, Adhian Dini Khoirina Kurniawan, Randy Yusuf Masruri Masruri Masruri Muhammad Alwi Nelsy Dian Permatasari Ni'maturohmah, Eva Pamungkas, Bangkit Puji Putra Pangestuti, Martasari Beti Panggulu Ahmad Ramadhani Utoro Permatasari, Nelsy D Pratama, Borneo Satria Putra, Tamam Athallah Rhely Rahayu, Lisa F Ristianti, Wigi Putri Saraswati, Ayu R SARASWATI, Ayu Rahayu Sari, Yanti SIMON BAMBANG WIDJANARKO Sudarminto Setyo Yuwono Susilo, Donor Utomo M. Ustiatik, Reni Utoro, Panggulu A R Yunira, Eka Nur'azmi