Peningkatan kualitas karagenan rumput laut Kappaphycus alvarezii dengan metode budidaya keranjang jaring

Author:

Failu Ismail,Supriyono Eddy,Suseno Sugeng Hari

Abstract

<p class="NoParagraphStyle"><strong>ABSTRACT</strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle">This study aimed to analyze the quality of <em>Kappaphycus alvarezii </em>seaweed carrageenan cultured using methods basket nets in waters of Baruta, Sangia, Wambulu, District of Buton, Southeast Sulawesi. The study consisted of three treatments in triplicates. Seaweed culture used different cultivation net-basket forms i.e. net-basket box, net-basket lantern, and longline without net-basket (control). Quality of <em>K. alvarezii</em> seaweed obtained in this study varied from each treatments. Daily growth rate in each treatment were not significantly different. Production of seaweed with a net-basket box (201.61 g/m<sup>2</sup>) was higher than the net-basket lanterns (183.22 g/m<sup>2</sup>), but not significantly different from control (196.98 g/m<sup>2</sup>). Carageenan yield value of control (46.74%) was the highest of all treatments. The water content of carrageenan in each treatment was not significantly different and it ranged from 17.20–17.39%. The viscosity of carrageenan in net-basket lantern (179.40 cPs) was the highest of all treatments. Carrageenan gel strength was the best treatment (702.53 g/cm²). As conclusion, using the net-basket lantern  as cultivation method provided quality improvement of carrageenan in <em>K. alvarezii</em> seaweed.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: <em>Kappaphycus alvarezii</em>, cultivation methods, carrageenan quality</p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle"><strong>ABSTRAK</strong><strong></strong></p><p class="NoParagraphStyle"><strong> </strong></p><p class="NoParagraphStyle">Penelitian ini bertujuan untuk menganalisis kualitas karagenan rumput laut <em>Kappaphycus alvarezii </em>yang dibudidaya menggunakan metode keranjang jaring di perairan Baruta, Kecamatan Sangia, Wambulu, Kabupaten Buton Sulawesi Tenggara. Penelitian terdiri atas tiga pelakuan dan tiga ulangan. Pemeliharaan rumput laut dilakukan dengan metode keranjang jaring berbeda yaitu metode keranjang jaring kotak, keranjang jaring lampion, dan longline tanpa menggunakan keranjang jaring (kontrol). Hasil pengamatan kualitas rumput laut <em>K. alvarezii </em>dalam penelitian ini bervariasi dari setiap perlakuan yang diberikan. Laju pertumbuhan harian pada setiap perlakuan tidak berbeda nyata. Produksi rumput laut dengan metode keranjang jaring kotak (201,61 g/m<sup>2</sup>) lebih tinggi dibandingkan jaring lampion (183,22 g/m<sup>2</sup>), namun tidak berbeda nyata dengan kontrol (196,98 g/m<sup>2</sup>). Nilai rendemen karagenan kontrol (46,74%) lebih tinggi dari perlakuan lainnya. Kadar air karagenan pada setiap perlakuan tidak berbeda nyata yaitu berkisar 17,20–17,39%. Viskositas karagenan perlakuan metode keranjang jaring lampion (179,40 cPs) lebih tinggi dibandigkan perlakuan lainnya. Kekuatan gel karagenan perlakuan metode keranjang jaring lampion (702,53 g/cm²) lebih tinggi dibandingkan perlakuan lainnya. Berdasarkan hasil tersebut, maka dapat disimpulkan bahwa metode keranjang jaring lampion memberikan peningkatkan kualitas karagenan rumput laut <em>K. alvarezii </em>yang dibudidayakan.</p><p class="NoParagraphStyle"> </p><p>Kata kunci: <em>Kappaphycus alvarezii</em>, metode budidaya,  kualitas karagenan</p>

Publisher

Jurnal Akuakultur Indonesia

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