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All Journal Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Jurnal AbdiMas Nusa Mandiri
Irmansyah Irmansyah
IPB University
Agriculture, Biological Sciences & Forestry Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Mathematics Physics Social Sciences Other

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Nondestructive Prediction of Oil Palm Fruit Quality During Processing Delays Using Electrical Impedance Spectroscopy Arief Al Akbar; I Wayan Budiastra; Irmansyah Irmansyah
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 6 (2025): December 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i6.2171-2178

Abstract

Nondestructive prediction of palm fruit quality is needed to monitor changes in palm fruit quality during processing delays. This study aims to develop a method for predicting the chemical quality of palm fruit during processing delays using the Electrical Impedance Spectroscopy (EIS). The electrical impedance of palm fruit were measured at frequencies of 50 Hz to 1 MHz and followed by the determination of free fatty acid (FFA) and moisture content using chemical methods. The best initial treatment for impedance spectrum data in this study was Standard Normal Variate (SNV) and Baseline. The results of this study indicate that the PLS method outperforms PCR in predicting FFA and moisture content. The best prediction for free fatty acid content was using the SNV pre-treatment and component factor 7 with a value of r = 0.87; SEC = 2.75%; SEP = 2.82%; CV = 23.81%; RPD = 1.94 and consistency of 97.75%. The best prediction for moisture content was obtained using the Baseline initial treatment and component factor 15 with a value of r = 0.97; SEC = 3.65%; SEP = 3.82%; CV = 28.24%; RPD = 1.91 and consistency of 83.24%. The developed electrical impedance and PLS methods can be used to predict free fatty acid content and moisture content of oil palm fruit during processing delays.
INOVASI BIOPOT BERBAHAN JERAMI PADI SEBAGAI SUBSTITUSI POLYBAG PEMBIBITAN DI DESA SIDOREJO, BOJONEGORO Siti Nikmatin; Irmansyah Irmansyah; Abd Djamil Husin; Rima Fitria Adiati; Naufal Luthfi Ahya
Jurnal AbdiMas Nusa Mandiri Vol. 8 No. 2 (2026): Periode April 2026
Publisher : LPPM Universitas Nusa Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33480/abdimas.v8i2.7315

Abstract

The abundance of rice straw biomass waste in Desa Sidorejo, Kabupaten Bojonegoro, has not been managed optimally and can cause environmental problems. On the other hand, the use of plastic polybags in seedling cultivation contributes to the accumulation of non-biodegradable plastic waste. The objective of this community service project is to introduce an innovation in the production of biopots from nonwoven geotextile sheets made from rice straw fibers. The straw is bonded using simple roll-press technology to create geotextile, and the final product can be used as a substitute for plastic polybags. The activity partners were the “Karya Tani” farmer group, consisting of 20 participants. The implementation methods included outreach, training, and evaluation. Evaluation was conducted through pre-tests and post-tests, as well as field observations over a three-month period. Evaluation results showed a significant increase (100%) in knowledge and skills. Meanwhile, regarding attitude, 76% of participants engaged in bio-pot production to utilize their free time. The implications of this activity include a reduction in agricultural waste and dependence on plastic in Sidorejo Village, while also opening opportunities for the development of creative business units based on a circular economy for the local farmers’ group.
Co-Authors Abd Djamil Husin Arief Al Akbar I Wayan Budiastra Naufal Luthfi Ahya Rima Fitria Adiati Siti Nikmatin