@article{Zakaria_Rahman_Rahmani_Manurung_Mohamad Puad_Abduh_2019, title={PRODUCTION OF CARRAGEENAN BY DIFFERENT STRAINS OF Kappaphycus alvarezii CULTIVATED IN SERANG, INDONESIA}, volume={20}, url={https://journals.iium.edu.my/ejournal/index.php/iiumej/article/view/1062}, DOI={10.31436/iiumej.v20i2.1062}, abstractNote={<p><em>Kappaphycus alvarezii </em>is one of the main seaweeds cultivated in Indonesia. Its use as a raw material for the kappa-carrageenan industry has increased its cultivation activities. However, standard cultivation protocol for <em>Kappaphycus alvarezii</em> has yet to be well-documented, particularly on strain selection for kappa-carrageenan production. There are various strains of <em>Kappaphycus alvarezii</em> grown in Indonesia, specifically in Serang, Banten such as green, red, and yellowish green strains. In this study, growth rate, carrageenan yield, and gel strength from different strains of <em>Kappaphycus alvarezii</em> were investigated. It was observed that the specific growth rate of green type (4.14% /day) differed significantly from the other two types (red; 3.41% /day and yellowish green; 3.47% /day). The red type had the highest yield of carrageenan (45.16%) followed by yellowish green (36.66%) and green strain (33.67%). Gel strength was not significantly affected by the strain variations where the observed values for yellowish green, green, and red strain were 344.46, 316.91 and 313.10 g/cm<sup>2</sup>, respectively. Green <em>Kappaphycus alvarezii</em> had the highest biomass (0.27 g/cm/d) and carrageenan productivity (0.012 g/cm/d). It can be concluded that the green strain of <em>Kappaphycus alvarezii</em> is the most suitable for cultivation in Serang, particularly for the kappa-carrageenan industry.</p> <p><strong><em>ABSTRAK</em></strong><strong><em>:</em></strong> <em>Kappaphycus alvarezii </em>adalah sebahagian daripada rumpai air yang dituai di Indonesia. Penggunaannya sebagai bahan dasar kepada industri kappa-carrageenan telah menambah kepada aktiviti penuaian. Walau bagaimanapun, protokol penuaian biasa bagi <em>Kappaphycus alvarezii</em> adalah tertakluk pada dokumentasi penuh terutama dalam pemilihan strain pada penghasilan kappa-carrageenan. Terdapat pelbagai jenis strain <em>Kappaphycus alvarezii</em> yang tumbuh di Indonesia, terutama di Serang, Banten seperti hijau, merah, dan strain hijau kekuningan. Kajian ini, kadar pertumbuhan, hasil karaginan dan kekuatan gel daripada pelbagai strain <em>Kappaphycus alvarezii</em> telah dikaji. Didapati bahawa kadar pertumbuhan tertentu pada jenis hijau (4.14% /hari) berbeza ketara berbanding dari dua jenis lain (merah; 3.41% /hari dan hijau kekuningan; 3.47% /hari). Jenis merah mempunyai hasil karaginan tertinggi (45.16%) diikuti oleh hijau kekuningan (36.66%) dan strain hijau (33.67%). Kekuatan gel adalah tidak ketara mempengaruhi kepelbagaian variasi di mana nilai yang dipantau pada strain hijau kekuningan, hijau dan merah adalah 344.46, 316.91 dan 313.10 g/cm<sup>2</sup>, masing-masing. <em>Kappaphycus alvarezii</em> hijau mempunyai biojisim tertinggi (0.27 g/cm/d) dan penghasilan karaginan (0.012 g/cm/d). Kesimpulannya strain hijau <em>Kappaphycus alvarezii</em> adalah lebih sesuai untuk disemai di Serang terutamanya pada industri kappa-karaginan.</p>}, number={2}, journal={IIUM Engineering Journal}, author={Zakaria, Anas and Rahman, Egi Nurul and Rahmani, Ulin Noor and Manurung, Robert and Mohamad Puad, Noor Illi and Abduh, Muhammad Yusuf}, year={2019}, month={Dec.}, pages={12–21} }