TY - JOUR AU - Tram, Tran Bao AU - Son, Pham Huong AU - Ngoc Trinh, Bui Thi PY - 2012/05/09 Y2 - 2024/03/29 TI - Study on preservation of Spirulina maxima JF - Academia Journal of Biology JA - AJB VL - 32 IS - 3 SE - Articles DO - 10.15625/0866-7160/v32n3.702 UR - https://vjs.ac.vn/index.php/vjbio/article/view/702 SP - 31-35 AB - <p>In the 1980s of the past century, the use of immobilized enzymes or cell components for the production of a series of metabolites has become a branch of biotechnology of rapidly growing importance. Up to now, most frequent current uses of immobilize algal cells are applying for different purposes: the production of electricity, hydrogen, ammonia, polysaccharides and glycerol; culture collection handling; the removal of nitrogen and phosphorus; heavy metal removal/recovery. Immobilization techniques can be primarily divided into two groups: ‘passive” and “active” immobilization with various matrices: polyurethane foam, polyvinyl foam, glass beads, agar, alginate, agarose, carrageenan, chitosan....</p> <p><em>Spirulina</em> has been widely used in food, farmaceutical and cosmetic industries. The aim of our work was to find out preservation for <em>S. maxima</em>. In this report we carried out immobilizing of <em>S. maxima</em> in gel solution at 2, 3, 4% (w/v) concentrations. The growth responses of immobilized and normal agar culture of<em> </em><em>S. maxima</em> were compared. The effect of temperature and time of the storage on growth of <em>S. maxima</em> was reviewed, too. The results showed that <em>S. maxima</em> can be maintained by both of immobilized and agar stock, but the recovered ability of immobilized <em>S. maxima</em> in gel was better than on agar stock after 6 months of preservation. We also found out that the preservation in concentration of 3% gel, at 5<sup>o</sup>C was the best condition for long-term storage of <em>S. maxima</em>.</p> The presevation of <em>S. maxima</em> by immobilization technique is quite easy method and it help contributing to the extension of term for storage, reducing contaminations and keeping the strain intact with high quality. ER -