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      • UT - Faculty of Fisheries and Marine Science
      • UT - Aquatic Product Technology
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      Pengaruh Tekanan Pengeringan Ultrasonic Vacuum terhadap Nori Analog dari Rumput Laut Ulva lactuca

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      Date
      2022
      Author
      Fauzan, Muhamad Noor
      Uju
      Ramadhan, Wahyu
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      Abstract
      Nori analog merupakan nori yang dibuat menggunakan bahan yang mirip dengan nori yang terbuat dari Porphyra sp. Salah satu tahap dalam proses pembuatan nori analog adalah pengeringan. Proses pengeringan dilakukan menggunakan oven, namun dalam prosesnya membutuhkan waktu yang cukup lama. Teknik pengeringan ultrasonik vakum belum banyak digunakan khususnya pada produk nori analog. Penelitian ini bertujuan menentukan pengaruh tekanan pada pengeringan ultrasonik vakum terhadap sifat-sifat produk nori analog rumput laut Ulva lactuca. Pembuatan produk nori analog dengan menghaluskan rumput laut menjadi bubur, kemudian dikeringkan menggunakan ultrasonik vakum dengan perlakuan tekanan 20, 40, dan 80 kPa. Laju pengeringan ultrasonik vakum tertinggi pada tekanan 80 kPa yaitu 15,13 ± 0,11 gH2O/jam. Nori analog memiliki kandungan protein 9,23% hingga 12,11%, dengan nilai aktivitas antioksidan sedang. Tekanan tidak berpengaruh terhadap nilai aw dan warna nori analog dengan nilai aw 0,6.
       
      Nori-like is an artificial nori made from materials that are similar to nori made from Porphyra sp. Nori-like is usually dried by using an oven, however it needs a long time to dry the nori-like. Ultrasonic vacuum drying technique has not been widely used, especially for nori-like. This study aimed to determine the effect of pressure on vacuum ultrasonic drying on the nori-like properties of Ulva lactuca. Nori-like are made by crushing seaweed into a slurry and then drying it under ultrasonic vacuum with pressures of 20, 40, and 80 kPa. The highest vacuum ultrasonic drying rate was at 80 kPa which is 15.13 ± 0.11 gH2O/hour. The chemical composition of nori-like showed that nori-like has 9.23% until 12.11% of protein content and showed moderate antioxidant activity levels. The pressure had no significant effect on the aw value and nori-like color with 0.6 aw value
       
      URI
      http://repository.ipb.ac.id/handle/123456789/111561
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      • UT - Aquatic Product Technology [2463]

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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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