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Extraction of native agar from Gracillaria sp with ultrasonic acceleration at low temperature

Jurnal Pengolahan Hasil Perikanan Indonesia · Vol. 21 No. 3 (2018) · hlm. 414–422

DOI
10.17844/jphpi.v21i3.24711
ISSN
2354-886X, 2303-2111
Terbit
2018-12-29
Penerbit
Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)
Bahasa
eng

Abstrak

Gracilaria sp. is a potential agar-producing seaweed. The agar is conventially extracted at high temperature (80-100°C) for 2-3 hours, requiring a lot of energy. Ultrasonication-assisted extraction methodremoves the requirement of high temperatures and shortening the extraction time, thus reduces the energy cost during extraction process. This study was aimed to determine the effects of temperatures (50 and 60°C) and times (45 and 60 minutes) of ultrasonication on the yield and properties of theproduced agar. Energy efficiency was also calculated based on the ratio of energy required with the amount of agar produced. The ultrasonication significantly increased the yield and energy efficiency. The selected treatment was the extraction with temperature 60°C for 60 minutes producing agar with thee yield of 12.45%, viscosity of 35.8 cP, white degree of 50.96%, moisture content of 12.59%, ash content of 7.07%, sulfate content 3.67% and gel strength 108.03 g/cm2. Agar produced with the selected treatment was grouped as native agar with low gel strength.

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  • IPB University
  • National Research and Innovation Agency
  • Institut Teknologi Dan Bisnis STIKOM Bali
  • Bandung Institute of Technology
  • National Nuclear Energy Agency of Indonesia
  • Universitas Airlangga
  • Afiliasi tidak diketahui
  • Organisasi berbeda
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Rekan penulisOrganisasiArtikel bersama
Wini TrilaksaniIPB University11
Wahyu RamadhanAfiliasi tidak diketahui10
Joko SantosoInstitut Teknologi Dan Bisnis STIKOM Bali8
Desniar DesniarIPB University7
Sugeng Heri SusenoIPB University6
Iriani SetyaningsihIPB University5
Pipih SuptijahIPB University5
Uju UjuAfiliasi tidak diketahui5
‪Tati NurhayatiIPB University5
Bambang RiyantoIPB University4
Kustiariyah TarmanIPB University4
Safrina Dyah HardiningtyasIPB University4
Bustami IbrahimIPB University3
Tati NurhayatiIPB University3
Desniar DesniarAfiliasi tidak diketahui3
Kustiariyah TarmanAfiliasi tidak diketahui3
Cahyuning IsnainiIPB University2
Joko SantosoIPB University2
Bambang RiyantoBandung Institute of Technology2
Dian SetyariniAfiliasi tidak diketahui2
Aulia HidayatiIPB University2
Mala NurilmalaIPB University2
Nurjanah NurjanahIPB University2
Rizfi Faris PariAfiliasi tidak diketahui2
Nurjanah - NurjanahIPB University2
Gansuar SepriIPB University1
Nadia AuliaIPB University1
Qori Jihan AtiqahIPB University1
Muhammad Haychal SyahdamiIPB University1
Yopi NovitaIPB University1
Budhi Hascaryo IskandarIPB University1
Agus SupriyantoUniversitas Airlangga1
Sihono SihonoNational Nuclear Energy Agency of Indonesia1
Pradeka Brilyan PurwandokoNational Research and Innovation Agency1
Indriawati IndriawatiNational Research and Innovation Agency1
Laili SalsabilaAfiliasi tidak diketahui1

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Sumber metadata: OAI-PMH (metadata jurnal) http://journal.ipb.ac.id/index.php/jphpi/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en">Extraction of native agar from Gracillaria sp with ultrasonic acceleration at low temperature</dc:title>
	<dc:creator xml:lang="en">Uju, Uju</dc:creator>
	<dc:creator xml:lang="en">Santoso, Joko</dc:creator>
	<dc:creator xml:lang="en">Ramadhan, Wahyu</dc:creator>
	<dc:creator xml:lang="en">Abrory, Muhammad Fakhri</dc:creator>
	<dc:subject xml:lang="en">High yield</dc:subject>
	<dc:subject xml:lang="en">low energy</dc:subject>
	<dc:subject xml:lang="en">short time</dc:subject>
	<dc:description xml:lang="en">Gracilaria sp. is a potential agar-producing seaweed. The agar is conventially extracted at high temperature (80-100°C) for 2-3 hours, requiring a lot of energy.  Ultrasonication-assisted extraction methodremoves the requirement of high temperatures and shortening the extraction time, thus reduces the energy cost during extraction process.  This study was aimed to determine the effects of temperatures (50 and 60°C) and times (45 and 60 minutes) of ultrasonication on the yield and properties of theproduced agar. Energy efficiency was also calculated based on the ratio of energy required with the amount of agar produced. The ultrasonication significantly increased the yield and energy efficiency. The selected treatment was the extraction with temperature 60°C for 60 minutes producing agar with thee yield of 12.45%, viscosity of 35.8 cP, white degree of 50.96%, moisture content of 12.59%, ash content of 7.07%, sulfate content 3.67% and gel strength 108.03 g/cm2. Agar produced with the selected treatment was grouped as native agar with low gel strength. </dc:description>
	<dc:publisher xml:lang="en">Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)</dc:publisher>
	<dc:date>2018-12-29</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.ipb.ac.id/jphpi/article/view/24711</dc:identifier>
	<dc:identifier>10.17844/jphpi.v21i3.24711</dc:identifier>
	<dc:source xml:lang="id">Jurnal Pengolahan Hasil Perikanan Indonesia; Vol 21 No 3 (2018): Jurnal Pengolahan Hasil Perikanan Indonesia; 414-422</dc:source>
	<dc:source xml:lang="en">Jurnal Pengolahan Hasil Perikanan Indonesia; Vol. 21 No. 3 (2018): Jurnal Pengolahan Hasil Perikanan Indonesia; 414-422</dc:source>
	<dc:source>2354-886X</dc:source>
	<dc:source>2303-2111</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.ipb.ac.id/jphpi/article/view/24711/16091</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2018 Jurnal Pengolahan Hasil Perikanan Indonesia</dc:rights>
</oai_dc:dc>