Abstract
Brown algae is a source of sodium alginat raw material. One type of brown algae that is found to grow in Indonesian waters is Sargassum echinocarphum. Brown algae including one type of seaweed that grows in many waters of Indonesia, especially the waters of Eastern Indonesia. Alginat is a pure polysaccharide of uronic acid contained in a brown algae cell wall arranged in the form of long linear chain alginic acids with levels reaching 40% of the total dry weight. The alginat form in general is sodium alginat, a water soluble alginat salt. The purpose of this research is to know the quality of alginat include alginat rendamen, water content, ash content, and viscosity. Conventional extraction methods from brown algae into sodium alginat produces the highest yield percentage of 32.42%, resulting from the extraction for 7 hours at 60 C. The lowest average yield percentage resulted in 5 hours extraction process of 2.78%, the average water content of 20.37 - 23.30%, the mean ash content of 22.28 - 34.87%, and the viscosity ranged between 18, 0 - 19.8 Cp.
Highlights
One of the potential marine biota of Indonesian waters is the macro algae, known in trade as seaweed
The purpose of this research was to study the effect of temperature and duration of extraction to the yield of sodium alginate by conventional method
The sodium carbonate powder is added in the mixer so that the alginate acid gel is converted to sodium alginate in paste form and immersed in technical ethanol, dried in the sun for ±12 hours until the water content of 12%
Summary
One of the potential marine biota of Indonesian waters is the macro algae, known in trade as seaweed. These marine macro algae do not have roots, stems and leaves which are called thallus, taxonomically grouped into Divisio Thallophyla. Four major classes in the divisio are Chlorophyceae (green algae), Phaehphyceae (brown algae), Rhodophyceae (red algae), and Cyanophyceae (blue-green algae) (Waryono, 2001). Macroalgae including red, green, and brown algae are commonly referred to as seaweed (Castro & Huber, 2009). Brown seaweed has a pigment that gives a brown color and can produce algin or alginate, laminarin, cellulose, ficoidin and mannitol whose composition is highly dependent on species, developmental period and place of growth (Maharani & Widyayanti, 2009). The main component of algae is carbohydrates while the other components are protein, fat, ash (sodium and potassium) and water 80-90% (Chapman & Chapman, 1980)
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
