Contamination in mass cultivation of Spirulina is inevitable, particularly in outdoor cultivation. The contamination is mainly caused by microbes which can affect the growth and decrease the yield of microalgae. Several methods have been conducted to overcome the microbial contamination in the culture. However, recent methods are still not affordable to be implemented in large scale cultivation. Hence, a more efficient way is required to overcome the contamination. For salt tolerance organisms such as Spirulina, altering salinity of the culture media is considered an affordable strategy to be implemented for contamination control since salinity can act as a limiting factor in many organisms. In this study we investigated the effect of salinity on the contamination and growth rate of Spirulina in open ponds. We also investigated its impact on the nutritional value of Spirulina. The salinity used in this study were 5‰,10‰, 20‰, 30‰, and 40‰. The growth of Spirulina was measured using both biomass and cell density. The contaminants were measured every 5 days using Total Plate Count. The nutritional values measured in this study were total protein using Kjeldahl method, total lipid content using soxhletation method, and pigmentations (chlorophyll, carotenoid and phycocyanin) using spectrophotometry. The results show that 10‰ salinity effectively reduced the contaminants as well as increased the biomass in Spirulina mass culture. Salinity of 10‰, 20‰, and 30‰ increased the carotene and lipid contents. Salinity of 20‰, 30‰ reduced the chlorophyll and protein contents. Salinity 40‰ reduce the protein, chlorophyll, and phycocyanin contents.?
Rumpun Ilmu
Biologi (dan Bioteknologi Umum)
Bahasa Asli/Original Language
English
Level
Internasional
Status
Dokumen Karya
No
Judul
Tipe Dokumen
Aksi
1
Bukti Submission Jurnal Pertanika_2020_Eko Agus Suyono.pdf
Bukti Submitted
2
Rev Pertanika Rangkuti et al_Submission 25 January.pdf
