@article{Prasetyo_Setyaningsih_Agungpriyono_2015, place={Bogor, ID}, title={Growth and Extracelluler Polysaccaride Production of Porphyridium cruentum In Various Photoperiod}, volume={18}, url={https://journal.ipb.ac.id/index.php/jphpi/article/view/12882}, DOI={10.17844/jphpi.v18i2.12882}, abstractNote={<p>Porphyridium cruentum is a kind of red microalgae (Rhodophyta) that can grow and produce<br />polysaccharides. Polysaccharides are produced on the cell, then released and accumulated by<br />extracellular into medias. This study aimed to determine the optimum growth and production<br />of extracellular polysaccharides (EPs) from P. cruentum in various photoperiods. The cultivation<br />was done with the photoperiods at 24:0, 18:6, 12:12 and 06:18 h (light:dark) during 40 days using<br />modified medium F/2. The growth is determined by measuring optical density (OD) and dried<br />biomasses, the productions of EPs are determined by dried weight polysaccharides as a result<br />of precipitation. The results showed that OD at photoperiod 24:0 has the highest value 0.876 ±<br />0.0645 unit of absorbance, biomass concentrations are highest in the photoperiod 24:0 and 12:12<br />respectively 716.12 ± 123 mg-l and 696.5 ± 74.5 mg-l, the highest production of EPs on the<br />photoperiod 12:12 is 1.310 ± 130.26 mg-l. 12:12 hours (light: dark) photoperiod is optimally used<br />in P. cruentum cultivations with high biomass and extracellular polysaccharide results.</p&gt;}, number={2}, journal={Jurnal Pengolahan Hasil Perikanan Indonesia}, author={Prasetyo, Himawan and Setyaningsih, Iriani and AgungpriyonoDewi Ratih}, year={2015}, month={Dec.}, pages={219-229} }