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Prototipe Portabel Berbasis pH dan Turbiditas untuk Estimasi Cepat Asam Lemak Bebas pada Minyak Sawit Mentah Abimanyu, Akhmad Asrho Berlian; Wisnu, Febryan Kusuma; Telaumbanua, Mareli; Warji, Warji; Asmara, Sandi; Wijaya, I Gede Krishna
Jurnal Agricultural Biosystem Engineering Vol. 5 No. 1 (2026): March 2026
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v5i1.12903

Abstract

Free fatty acid is an important parameter in determining the quality of crude palm oil. High free fatty acid content can reduce oil quality and cause economic losses in palm oil processing. The conventional method commonly used to determine free fatty acid content is acid-base titration, but this method requires chemicals, laboratory equipment, and relatively long analysis time. This study aimed to design a portable device for rapid detection of free fatty acid content in crude palm oil using pH meter, turbidity meter, and artificial neural network. Oil samples were obtained from oil palm fruitlets with different physical damage levels. Free fatty acid content was measured using titration, while pH and turbidity were used as input variables in the artificial neural network model. The results showed that pH had a relationship with free fatty acid content with a coefficient of determination of 0.3516, while turbidity had a stronger relationship with a coefficient of determination of 0.7636. The best artificial neural network model was obtained using the tansig-logsig-logsig activation function, with R² of 0.9501 and RMSE of 0.6390 in calibration. In the testing stage, the model produced R² of 0.8061 and RMSE of 1.9222. The developed prototype can be used as a rapid method to estimate free fatty acid content in crude palm oil.
Pengaruh Penambahan Jahe terhadap Karakteristik Fisik dan Penerimaan Sensori Teh Cascara Berbahan Kulit Kopi Robusta Raihan Athallah Mukhti; Sandi Asmara; Febryan Kusuma Wisnu; Warji Warji
Jurnal Agricultural Biosystem Engineering Vol. 5 No. 2 (2026): June 2026
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v5i2.12379

Abstract

This study evaluated the effect of ginger addition on the physical characteristics and sensory acceptance of cascara tea produced from Robusta coffee pulp. Coffee pulp is an agricultural by-product that can be processed into a value-added beverage product. Ginger was added to improve the sensory profile of cascara tea, particularly aroma and taste. The study used a single-factor Completely Randomized Design with six ginger concentrations, namely 5%, 10%, 15%, 20%, 25%, and 30% based on the weight of cascara. Each treatment was repeated three times. The observed parameters included moisture content, specific gravity, sediment content, and sensory acceptance. The results showed that ginger concentration significantly affected moisture content, but did not significantly affect specific gravity and sediment content. Sensory evaluation showed that the addition of 10% ginger produced the highest acceptance score compared with other treatments. Excessive ginger concentration tended to reduce panelist preference because the pungent ginger flavor became dominant. Based on the observed physical and sensory characteristics, the addition of 10% ginger was considered the most acceptable formulation for cascara tea made from Robusta coffee pulp. Further studies are required to analyze bioactive compounds, antioxidant activity, microbial safety, and storage stability before the product can be claimed as a functional beverage.
Pengaruh Suhu dan Ketebalan Irisan Terhadap Kerupuk Otak-Otak Ikan Menggunakan Teknologi Vacuum Frying Salma Hairunisa; Tamrin Tamrin; Yuni Safitri; Sandi Asmara
Jurnal Agricultural Biosystem Engineering Vol. 5 No. 2 (2026): June 2026
Publisher : abe.fp.unila.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jabe.v5i2.13185

Abstract

Lampung Province is known for its enormous potential for marine and fishery resources in Indonesia. This condition will support the supply of fish for making otak-otak. Vacuum frying otak-otak can increase its shelf life, so otak-otak products have the potential for export. This study aims to analysis the effect of temperature and slice thickness in vacuum frying on the quality characteristics of fish otak-otak chips. Frying temperature and differences in slice thickness affect the quality characteristics of fish otak-otak chips, especially on the parameters of yield, colour, and crispiness, but do not significantly affect water content, taste, and aroma. Treatment with longitudinal slices divided into 3 tends to produce a crispier texture and a higher level of acceptance than whole otak-otak. The combination of 85 °C temperature with longitudinal slices resulted in the fastest frying time, namely 85 minutes, with the lowest water content of 4.0%. In contrast, the treatment of 75 °C temperature with whole slices resulted in the longest frying time, namely 139 minutes, with the highest water content of otak-otak fish at 4.7%. The best colour quality was obtained at a temperature of 75˚C with longitudinal slices with a score of 3.78, while the highest level of crispiness was obtained at a temperature of 85 °C with longitudinal slices with a score of 4.25 (crispy).
Monitoring The Crowns Of Palm Oil Plants in Central Lampung Regency Using Remote Sensing Techniques Ridwan Ridwan; Elhamida Rezkia Amien; Sandi Asmara; Ahmad Tusi; Faadiyah Nurul Azmi; Ilham Nur Syamto
Jurnal Ilmiah Rekayasa Pertanian dan Biosistem Vol 13 No 2 (2025): Jurnal Ilmiah Rekayasa Pertanian dan Biosistem
Publisher : Fakultas Teknologi Pangan & Agroindustri (Fatepa) Universitas Mataram dan Perhimpunan Teknik Pertanian (PERTETA)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jrpb.v13i2.1189

Abstract

Crude palm oil (CPO) productivity in Central Lampung Regency, at 2.25 tons/ha/year, remains below the national average of 3.90 tons/ha/year. One of the contributing factors is that oil palm plants are not growing optimally. This is reflected by the fact that the canopy cover is not dense or uniform. The objective of this study was to assess the dense or crown of oil palm trees using remote sensing technology from satellite imagery. In this study, Sentinel-2 imagery was used to oil palm canopy closure, and Landsat 8 imagery was used for land suitability analysis. The research method includes the vegetation index analysis by Normalized Difference Vegetation Index (NDVI), land moisture index by the Normalized Difference Moisture Index (NDMI), Land Surface Temperature (LST), and land suitability parameters. The results of the analysis are then macthed with the conditions of oil palm plants in the field. The results obtained from this study indicate that oil palm plantations in the Bekri District can be categorised into two discrete classes: Class S2 (sufficiently suitable) and Class S3 (marginally suitable). The total area encompassed by these classes is 8,903 hectares, with Class S2 covering 7,615 hectares and Class S3 covering 218 hectares. Moreover, the study revealed that 3,721 hectares were conducive to optimal plant growth with a dense crown, 765 hectares exhibited normal crown and growth, and 310 hectares displayed suboptimal growth with an indicated uniform dense crown. The overall accuracy rate of the study is 81.82%. There is a positive correlation between NDVI and NDMI values with a correlation coefficient (R2) of 0.8426, but there is a negative correlation between the NDVI and LST values with a correlation coefficient of -0.586.
Co-Authors AA Sudharmawan, AA Abd. Rasyid Syamsuri Abdilah, Rois Abimanyu, Akhmad Asrho Berlian Aditia Haidar Aditiya, Muhammad Kharisma Aditya, Muhammad Alif Adnan Bahrul Ulum Agung Pratama Agus Haryanto Agus Haryanto Agus Karyanto Agus Karyanto Ahmad Dharu Athallah Ahmad Tusi Airansi, Adraisna Aldama, Daffa Chairunissa Aldo Christian Ali Rahmat Aliftama, Althoriq Rizky Amalia, Anggun Clarisa Amanda Putra Seta Amanullah, Deo Arif Andayani, Siti Andini, Tiara Angraeni, Rini Anhar, Satria Radly Ardianto, Asep Asbi, Adnin Musadri Asshidiq, Miftahul Huda Bramayuda, Taufiq Budianto Lanya Budianto Lanya Bustomi Rosadi Chandra Pranata Christine Wulandari Cicih Sugianti Cicilia Novian Puspitarini Dahlia Dahlia Danesta Ayu Saputri Dedi Hermawan Dodi Setiawan Doria, Cici Dwi Dian Novita Elhamida Rezkia Amien Faadiyah Nurul Azmi Fadhil, Naufalda M. Febryan Kusuma Wisnu Ferdita Kurnia Fery Dwiriyanto Firdasari Firdasari Firmansyah, Aulia Chandra Fitria Tsani Farda Forky Indra Kano Gemilang, Tirta Satria Hafizh, Galang Dzakwan Hayane Adeline Warganegara, Hayane Adeline Ilham Nur Syamto Indah Listiana Intan Nuraini Ipang Setiawan Irfan Ardiansah Irfan Musyaffa Jati, Dhanur Pramono Jati, Galih Kuncoro Jayanegara, Hanissa I Juliantoro, Rizky Alif Kamadie Sumanda Syafis Ktut Murniati Kuncoro, Sapto Kurnia, Berti Kurniadi, Riko Kus Hendarto, Kus Kusuma, Abi Satria Jaya Kuswanta Futas Hidayat Luthfi Wisnu Wijaya M. Amin M. Zen Kadir Made Aditya Putra Mahesa, Khoirul Muhammad Dendi Manullang, Gregoius Tua Chandra Mareli Telaumbanua Meilani, Kezia Yesi Mohamad Amin Mohamad Amin Moniyana, Resha Muhamad Nurdin Yusuf Muhamad Teguh Angga Saputra Muhammad , Fazle Muhammad Amin Muhammad Amin Nahak, Gradiana Eny Neli Aida Nikolaus Saras Kurniawan Ni’am, Ahmad Zydan Nugraha, Danang Rezki Nurpilihan Bafdal Nurpilihan Bafdal Oktafri Oktafri Oktafri Oktafri Oktafri Oktafri Oktafri, Oktafri Panga Argovani Perdana, Tio Arya Prasetyo, Gilang Putra Priska Diana. S Putri Windasari Putri, Mustika R. A. Bustomi Rosadi Raden Ajeng Diana Widyastusi Raden Ajeng Diana Widyastuti Raihan Athallah Mukhti Rala, M.Andrian Soni Ramadhani, Julia Ratna Puspita, Ratna Resa Anggraini Ridho Al Akbar Gustam Ridwan Ridwan Ridwan Ridwan Ridwan Ridwan Ridwan Ridwan, Ridwan Riskia, Annissa Cindra Rohman, Fatkhur S, Rizki Kurniawan Salma Hairunisa Samsul Bakri Samudro, Panji Ario Sanjaya, Purba Sapto Kuncoro Saputra, Rio Dwi Sari, Selvi Yunita Satya, Dheo Ihza Amaya Sembiring, Rinawati Setiawan, Fajar Arief Setiawan, Firnando Anggi Setiya Wati, Tri Agus Sinaga, Elisabeth Intan Siti Anisa Siti Suharyatun Sri Mulyati Tamrin Tamrin Tamrin Tamrin Tamrin Tamrin Tamrin, Tamrin Tanto Pratondo Utomo Teguh Endaryanto Utomo, Basri Wahyu W, Nazova Falhbian Wahyu Ratnaningsih Wan Abbas Zakaria Warji Warji Warji Wicaksono, Steffanus Adrian Wibowo Wijaya, I Gede Krishna Winda Rahmawati Winda Rahmawati Winda Rahmawati Winda Rahmawati Yudi Haryono Yuni Safitri YUSNITA YUSNITA Yusnita Yusnita Yuyun Ari Trisnawati Zainal Abidin Zakaria, Rizky