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All Journal Jurnal Neutrino : jurnal fisika dan aplikasinya Tadbir : Jurnal Studi Manajemen Pendidikan INDONESIAN JOURNAL OF APPLIED PHYSICS Indonesian Journal of Science and Mathematics Education Jurnal Literasiologi Journal of Regional Economics Indonesia Al Iqtishadiyah: Journal of Islamic Economics and Finance Al Fattah Ejournal Sma Al Muhammad Cepu Engineering: Journal of Mechatronics and Education
kusairi kusairi, kusairi
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Transaction Costs, Asymmetric Information, and Market Access among Small-Scale Salt Farmers in Indonesia Kusairi, Kusairi; Prasetyo, Eko
Journal of Regional Economics Indonesia Vol. 6 No. 2 (2025): Agustus 2025
Publisher : University Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jrei.v6i2.16640

Abstract

This study examines transaction costs in the marketing of salt produced by small-scale farmers in Indonesia, focusing on the institutional arrangements that shape market access and farmer dependency. Using qualitative research design with a phenomenological approach, data were collected through in-depth interviews and document analysis involving salt farmers, intermediaries, letter owners, and related institutional actors in Pesanggrahan Village, Bangkalan Regency. The findings reveal that transaction costs arise primarily from asymmetric information, negotiation processes, and contractual constraints, particularly through the requirement to rent road permits issued by intermediaries to access salt processing firms. These costs, incurred outside production activities, limit farmers’ ability to sell directly to factories and weaken their bargaining position. As a result, farmers become structurally dependent on intermediaries within the salt supply chain. This study contributes to the transaction cost economics literature by highlighting how informal institutional arrangements and market regulations generate persistent inefficiencies and dependency among small-scale agricultural producers, with important implications for policy interventions aimed at improving farmer autonomy and market efficiency.
Optimizing Formalin Detection in Fish Using QCM Sensors with TOMAC Membrane Coatings for Product Quality Monitoring Muthmainnah, Muthmainnah; Aini, Khoirul; Tazi, Imam; Chamidah, Ninik; Kusairi, Kusairi
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 14, No 2 (2024): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v14i2.92912

Abstract

Detection of formalin in fishery products is a significant concern in the food industry to ensure consumer safety. This study compared the performance of Quartz Crystal Microbalance (QCM) sensors without a membrane and with a Trioctyl methyl ammonium Chloride (TOMAC) membrane coating in detecting formalin in fish samples. The research findings indicate that QCM without a membrane for formalin samples has a lower detection limit of 150 ppm and an upper detection limit of 350 ppm with a sensitivity of 2194.171 Hz/ppm. On the other hand, QCM with a TOMAC membrane coating has a lower detection limit of 400 ppm and an upper detection limit of 550 ppm with a sensitivity of 842.7551 Hz/ppm. Meanwhile, QCM without a membrane for formalin in fish samples has a lower detection limit of 450 ppm and an upper detection limit of 650 ppm with a sensitivity of 15386.38 Hz/ppm. At the same time, QCM with a TOMAC membrane coating for formalin in fish samples has a lower detection limit of 350 ppm and an upper detection limit of 500 ppm with a sensitivity of 23108.9 Hz/ppm. Response time analysis shows that both sensors reach a steady state condition after 12 seconds. This study highlights the importance of selecting appropriate sensors for detecting formalin in fishery products, considering detection limits, sensitivity, and response time as crucial criteria. Thus, these findings can guide the fisheries industry in choosing effective and accurate formalin detection technology.
Co-Authors Aini, Khoirul Ali Ashar Aminuyati Arsiyanti, Yhunia Chamidah, Ninik Eko Prasetyo Haryanto Haryanto Hasan, Sholihin Imam Tazi Imron Fauzi M.Ridwan, M.Ridwan Muthmainnah Muthmainnah Nayiroh, Nurun Ninik Chamidah Rumiyati, Rumiyati St. Rodliyah, St. Rodliyah Suparno Suparno Syaiful . Widayanti, Agnisa Zainudin, Zainuddin Zuailan Zuailan, Zuailan