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Journal : Jurnal Agritechno

Pengeringan Passive Irisan Umbi Uwi (Dioscorea alata L.) Irwan T; Junaedi Muhidong; Iqbal
Jurnal Agritechno Jurnal Agritechno, Vol. 13, Number 2, Oktober 2020
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/at.v13i1.346

Abstract

ABSTRACT Passive drying is a drying mechanism that utilizes sunlight in a drying chamber with natural air flow mechanism. The tool used is direct passive solar box dryer. Direct type passive drying is a drying mechanism in a drying chamber with an air flow mechanism where direct sunlight enters the drying chamber. This study was intended to determine the pattern of decreasing water content and moisture ratio of yum (Dioscorea alata L.) and the appropriate drying model. Passive drying of yum tuber slices is done in two stages. The first drying data is used to determine the most suitable drying model (biggest R2). While the second drying data is used to validate the accuracy of the model predictions obtained. The drying process is carried out by placing the sample at the top, middle, and bottom of the drying chamber. The samples used are two types of yum namely white yum and purple yum with a size of 3x3x1 cm. The models evaluated for compatibility are Newton, Henderson & Pabis, and Page. The results of the analysis show that the Page model with the equation MR = exp (-ktn) is the most suitable model to describe the pattern of decreasing water content and moisture ratio of yum. The values ​​of the Page equation constants are obtained as follows: k = 0.187249, n = 1.17272 and R2 = 0.999403. Keywords: Yum, Drying, Drying Model, Water Content
Analisis Kinetika Arrhenius Terhadap Perubahan Sifat Fisik, Kimia, Dan Kualitas Masak Beras Dengan Kombinasi Kadar Amilosa Dan Suhu Selama penyimpanan -, Febriana Intan Permata Hati; Joko Nugroho Wahyu Karyadi; Nursigit Bitoro; Iqbal; Diyah Yumeina; Olly Sanny Hutabarat; Mursalim; Khaeril Anwar Junaedi
Jurnal Agritechno Jurnal Agritechno Vol. 18, Nomor 2, Oktober 2025
Publisher : Depertemen Teknologi Pertanian Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Rice is one of the staple foods consumed by Indonesians. As one of the largest rice producers, problems related to rice storage are often complained about. During storage, rice changes its cooking quality and physical and physicochemical qualities. This study aimed to analyze the kinetic behavior of cooking and the physical and physicochemical qualities of Indonesian rice varieties. Rice with different amylose contents was stored for 4 months, and the collected data from the parameters of water content, whiteness, amylose content, elongation ratio, and extrudability were analyzed using the Arrhenius equation. The combination of amylose content and temperature influences the changes in the physical, chemical, and cooking properties of rice during storage. The highest increase in water content occurred in the Ciherang variety stored at a temperature of 20 °C, namely 0.0183%/week, and the whiteness, amylose content, and elongation ratio values decreased during storage. Storage at 30 °C resulted in a greater reduction in quality, with the change in Ciherang whiteness being 0.0202/week, sintanur amylose content decreasing by 0.0105%/week, and sintanur elongation ratio decreasing by 0.0348/week at this temperature. Meanwhile, the sintanur extrudability parameter experienced an increase of 0,0174g/week at a temperature of 30 ˚C. Therefore, in general, the decline in rice quality occurs more quickly at higher temperatures.
Co-Authors Abdul Achmad Rusdi Agusti, Eddy Al-falathi, Siti Aminah Alfaruq, Imam Almira, Jihan Aman, Ahmad Asrul Saputra Badaruddin Barokah, Muhammad Dedi Kusuma Habibie Desembardi, Faried Desember, Faried Desi Riskasusanti Diyah Yumeina Djuniadi Djuniadi Fadhil Surur FAHRIZAL Farida, Anif Fariyani Fariyani, Fariyani Farizal Farizawati Fauziansyah Febriana Intan Permata Hati Febriyani, Tika Galuh Indra Hasniatisari Haurissa, Prita Husnul Mubarak IAN YULIANTI Intan Zuhra Irwan T Ismayani, Susi jabul reski, fadhil Joko Nugroho Wahyu Karyadi Jummaidi Saputra Junaedi Muhidong Kahar Kahar, Kahar kamaludin, ade Khaeril Anwar Junaedi Laurencia Vivin Monica LINDAWATI M.Syekh Ikhsan Syaipudin Mahjoedin, Yovial Mahmud Achmad Mahyuddin Maizan, Rafdia Marthiana, Wenny Maulidiyah, Rafiqah Mauliza, Suci Meutia, Cut Dara Muh Fajar Hardiansyah Muhammad Iqbal Muhammad Rusmin Muhammad Tahir Sapsal Muhammad Wasil Muhammad Yusuf, Tahir Mukrimin Murliana Mursalim Nasution, Anhar Nida Nuraini Nurdiana Nurfadillah Nurhanifa Nurhanifa Nurjannah Nursigit Bitoro Olly Sanny Hutabarat Prabowo, Arga Satrio Prayoga, Dodo Solyus Pristianto, Hendrik Purwanto, A Didik Setya Rahmi, Hayatun Rajib Muammar Ridha Izzulhaq, Muhammad Rina Purnama Sari Rini, Retno Puspa Riyadhul Fajri Riyadhul Fajri Rokhman Saiful Bahri Salamah Salengke, Salengke Salsabila, Nadia Saputri, Yuni Sazili Selpiah Suhartini Sukowati, Dwi Guntoro SUNARNO Syafriadi Tasari, Sutriani Teuku Rihayat Upik Nurbaiti Valens Wardani, Vera Warsono Widya, Mitha Wiratmadinata Yetri Hasan Zainal Abidin Zainul Amri Zufiyardi Zulkifli