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      Pendugaan Umur Simpan Tepung Cookies Menggunakan Metode Akselerasi Dengan Pendekatan Kadar Air Kritis

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      Date
      2021
      Author
      Ginting, Hanna Kristiani Br
      Yuliasih, Indah
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      Abstract
      Label pangan adalah salah satu kewajiban yang harus dicantumkan oleh produsen pangan. Hal ini diatur dalam UU Pangan no 18 tahun 2012. Informasi umur simpan ditujukan agar konsumen mendapatkan jaminan mutu dan keamanan dari produk yang dikonsumsi. Tujuan penelitian ini adalah untuk menduga umur simpan tepung cookies yang diproduksi oleh salah satu industri tepung di Bogor. Tepung cookies yang diproduksi merupakan tepung komposit dengan kombinasi bahan utama tepung beras dan tepung sorgum. Metode yang digunakan pada penelitian adalah Accelerated Shelf-life Testing (ASLT) yaitu dengan mengkondisikan lingkungan produk yang dapat mempercepat reaksi penurunan mutu. Pendekatan kadar air kritis digunakan pada penelitian karena kadar air merupakan parameter penting dalam menentukan mutu tepung. Tahapan penelitian meliputi penentuan kadar air awal (Mo), kadar air kritis (Mc), penyimpanan sampel pada berbagai RH untuk mendapatkan kurva ISA, penentuan model sorpsi isotermis, uji ketepatan model, penentuan kemiringan kurva (b), pengukuran variabel umur simpan lainnya, serta pendugaan umur simpan dengan menggunakan persamaan Labuza. Model yang tepat untuk menggambarkan kurva isotermis sorpsi pada tepung cookies adalah model Oswin dengan nilai MRD 0,26. Hasil penelitian menunjukkan bahwa umur simpan tepung cookies dengan pendekatan air kritis berdasarkan Standar Nasional Indonesia (SNI) tepung beras pada RH 71% dengan menggunakan kemasan aluminium foil, LDPE (Low Density Polyethylene), dan plastik PP (Poly Propylene) berturut-turut adalah 324 hari, 30 hari, dan 144 hari dan pada RH 82% adalah 172 hari, 16 hari, dan 77 hari.
       
      Food labels are one of the obligations that must be included by food producers. This is regulated in Food Law No 18 of 2012. Shelf life information is intended so that consumers can guarantee the quality and safety of the products they consume. The purpose of this study was to estimate the shelf life of cookies flour produced by a flour industry in Bogor. Cookies flour produced is a composite flour with a combination of rice flour and sorghum flour. The method used in this research is Accelerated Shelf-life Testing (ASLT), namely by conditioning the product environment which can accelerate the reaction of quality degradation. The critical moisture content approach was used in this study because the water content is an important parameter in determining flour quality. The research stages include determining the initial moisture content (Mo), critical water content (Mc), storing samples at various RH to obtain the ISA curve, determining the isotherm sorption model, testing the accuracy of the model, determining the slope of the curve (b), measuring other shelf life variables, and estimation of shelf life which is calculated based on the Labuza equation. The best fit model in describing the moisture sorption isothermic curve in cookies flour was the Oswin model with MRD values 0,26. The results show that the shelf life of cookies flour with a critical water approach based on the Indonesian National Standard (SNI) for rice flour at 71% RH using aluminium foil, LDPE (Low-Density Polyethylene), and PP (Polypropylene) packaging, respectively was 324 days, 30 days, and 144 days and at 82% RH was 172 days, 16 days, and 77 days.
       
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      http://repository.ipb.ac.id/handle/123456789/109953
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      • UT - Agroindustrial Technology [4356]

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