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All Journal Biologi Edukasi : Jurnal Ilmiah Pendidikan Biologi Jurnal EduBio Tropika agriTECH Indonesian Journal of Chemistry Jurnal Serambi Engineering Teknologi dan Industri Pertanian Indonesia Jurnal Ilmiah Mahasiswa Pertanian Buletin Pengabdian Rona Teknik Pertanian KOPEMAS
Ratna Ratna
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Public Health Social Sciences

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Pendugaan Umur Simpan Jagung Manis Berdasarkan Kandungan Total Padatan Terlarut dengan Model Arrhenius Rita Khatir; Ratna Ratna; Mega Apriesti Puri
agriTECH Vol 35, No 2 (2015)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (287.682 KB) | DOI: 10.22146/agritech.13831

Abstract

Sweet corn has short shelf life at room temperature storage in the tropical countries (28-33°C). The quality deterioration of sweet corn can be determined by the decrease of its sugar content. The study aimed to estimate the shelf life of sweet corn based on the reduction of its total soluble solid (TSS) by using Arrhenius model. The samples were prepared from fresh harvested corn stored for 10 days at 3 different temperatures of 5, 15 and 28 °C. Total soluble solid (TSS) were analyzed every day by using abbe refractrometer. Organoleptic analysis was used by using hedonic scales from 1 to 7. The analysis was conducted until respondents had graded the samples at score 5 (dislike slightly), 6 (dislike) and approaches can be used to calculate the shelf life of sweet corn. The acceleration factor for the TSS degradation at null approach, it was estimated that if the sweet corn were stored at temperature of 30, 25, 20, 15, 10 and 5°C, the shelf temperatures, the shelf life of sweet corn would be 3.7, 4.5, 5.6, 6.8, 8.4, and 10.3 days. In conclusion, the shelf life predictions of sweet corn were valid well with the experimental results.ABSTRAKUmur simpan jagung manis relatif singkat apalagi kalau disimpan pada suhu ruang di negara-negara tropis (28-32°C). Kerusakan jagung manis dapat diindikasikan dengan penurunan kandungan gulanya. Penelitian ini bertujuan untuk menduga umur simpan jagung manis berdasarkan reaksi penurunan kandungan total padatan terlarutnya (TPT) dengan pendekatan model Arrhenius. Jagung manis segar yang baru siap panen segera disimpan selama 10 hari pada 3 kombinasi suhu yaitu 5, 15 dan 28°C. Setiap hari dilakukan analisis kandungan TPT dengan . Uji organoleptik dilakukan dengan skala hedonik 1-7. Proses pengamatan dihentikan apabila responden telah memberikan nilai 5 (agak tidak suka), 6 (tidak suka) dan 7 (sangat tidak suka). Pendekatan model Arrhenius dilakukan dengan dua persamaan yaitu persamaan orde 0 dan orde 1. Hasil analisis menunjukkan bahwa kedua persamaan tersebut dapat dipergunakan untuk menduga umur simpan jagung. Nilai faktor percepatan reaksi penurunan mutu (Q) untuk persamaan orde 0 adalah 1,49, sedangkan nilai Q10 untuk persamaan orde 1 adalah 1,51. Dengan menggunakan pendekatan orde 0, penyimpanan jagung manis pada suhu 30, 25, 20,15, 10 dan 5°C akan berpengaruh kepada umur simpan jagung manis menjadi 3,7, 4,5, 5,5, 6,7, 8,2, dan 10 hari. Sedangkan dengan pendekatan orde 1, penyimpanan jagung manis pada suhu yang sama akan berpengaruh kepada umur simpan jagung manis menjadi 3,7, 4,5, 5,6, 6,8, 8,4, dan 10,3 hari. Dapat ditarik kesimpulan bahwa hasil dugaan tersebut sangat valid dengan hasil observasi.
Study of Different Concentrations of Sorbitol as a Plasticizer in Producing Gelatin-Based Biodegradable Film from Chicken Claw Waste Br Padang, Sheila Saharani; Ratna, Ratna; Munawar, Agus Arip
agriTECH Vol 44, No 3 (2024)
Publisher : Faculty of Agricultural Technology, Universitas Gadjah Mada, Yogyakarta, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/agritech.84993

Abstract

An environmentally friendly packaging material that can be used in place of synthetic, non-green plastic packaging is biodegradable film. Therefore, this study aims to determine the effect of sorbitol plasticizer concentrations on the characteristics of biodegradable film produced from chicken claw waste. The treatments applied during the production process consisted of three sorbitol concentrations, including 0.5, 1, and 1.5%, repeated thrice. Characterization of biodegradable film comprised thickness, water content, water solubility, film swelling, mechanical properties, pH, water vapor permeability, oxygen permeability, and degradation tests. Analysis of variance  results showed that the sorbitol concentrations significantly influenced thickness value, but did not affect other characteristics. The best treatment was 0.5% sorbitol which generated thickness of 0.15 mm, WC of 13.97%, WS of 44.72%, swelling of 96.97%, tensile strength of 12.29 MPa, elongation of 22.23%, elasticity 58.53 Mpa, pH 7.5, WVP 9.26 g.m -1 pa -1 hour -1 , OP 1.52 g.m -1 pa -1 , and degradability for 14 days.
Co-Authors Abu Bakar Achyar Fadsy Ade Rika Marsita Agus Arip Munawar Ajrul Himawan Al Hulil Akbar Ferdynanda Alfatahillah Alfatahillah Amelia Maifani Annisa Azzahra Ashfa Achmad Ashfa Achmad Bambang Sukarno Putra Bambang Sukarno Putra Bambang Sukarno Putra, Bambang Sukarno Br Padang, Sheila Saharani Darwin Darwin Darwin Darwin Devianti Devianti Dewi Sundari Diswandi Nurba, Diswandi Elly Shafriaty Erin Karlina Faradilla Faradilla Hayati Zahra Ichwana Ichwana Ichwana Ramli Ichwana Ramli Indah Nandayani Irfan Maibriadi Kiman Siregar Kiman Siregar Lisa Maulidia Lusi Anasifa Maiful Hari Mega Apriesti Puri Mulyanti Mulyanti Murtahar Murtahar Nasrul Arahman Nurita Agustia Putra Bahrumi Putri, Cut Amelia Rahmat Fadhil Rahmat Fadhil Rahmiati Rahmiati Raida Agustina Raida Agustina Rama Niza Putri Ramayanty Bulan Ramayanty Bulan Rayhanur Wiwin Fajrina Rita Khathir Rita Khatir Rita Khatir Rita Khatir Roji Syahril Sahwi S Syafriandi Safira Elviana Safrida Safrida Siti Mechram Sri Aprilia Sri Aprilia Suhaimi Suhaimi Syafriandi Syafriandi Syafriandi Syafriandi Thahara Balqis Ulfa Triovanta Wardani Wardani Yulinar Yulinar Yunita Yunita Yusmanizar Yusmanizar Zulfahrizal Zulfahrizal