Abstract
This study aimed to determine the growth rate and protein content in Nannochloropsis oculata, Chlorella vulgaris, Spirulina platensis were cultured using agricultural fertilizers. The agricultural fertilizers used were Urea, ZA and TSP. Each single cell protein was cultured using the three types of fertilizers with a ratio of Urea: ZA and TSP as follows (A) 1: 2: 1 [(10:20:10 g / L)], (B) 2: 2: 1 [(20:20:10 g / L)] and (C) 3: 2: 1 [(30:20:10 g / L)], respectively. The results showed that the best ratio of Urea, ZA and TSP fertilizers to growth of Spirulina, Nannochloropsis oculata and Chlorella vulgaris was C [30:20:10 (g / L)] treatment. However, phyto-protein content in Nannochlorophsis differed significantly between fertilization treatments, C fertilization yielded the highest protein content (28.75±0.05%), when compared with A (25.13±0.01%) and B (25.14±0.02%), respectively. In Chlorella vulgaris, all fertilization treatments showed very significant differences, B fertilization (28.24%±00.006) yielded the highest phyto-protein content, if compared to A (23.63% ± 0.003) and C (19.74% ±0.006 ), respectively. All fertilization treatments showed very significant differences (P <0.05) on Spirulina platensis. The highest content of phyto-protein (62.68 + 0.05%) was present in treatment C, when compared to A (52.18 + 0.05%) and B (62.37 + 0.01%) treatments, respectively.
Highlights
Phytoplankton is a photosynthetic microorganism with morphology of cell variants, either single cell or multi-celled, small in size, living in waters, moving very passively, including in prokaryotes or eukaryotes and can grow rapidly with unicellular or multi-cellular structures (Marchetti et al 2012; Quin, 2011).Phytoplankton is one of the aquatic commodities that have great potential to be utilized properly
The results showed that the best ratio of Urea, ZA and TSP fertilizers to growth of Spirulina, Nannochloropsis oculata and Chlorella vulgaris was C [30:20:10 (g / L)] treatment
The use of single cell proteins from marine phytoplanktons such as Nannochloropsis oculata, Chlorella vulgaris, and Spirulina platensis, as a source of nutrients began to attract many interest to practitioners of fish feeding, compared to proteins contained in ground plants, proteins contained in vulgaris, and Spirulina platensis, higher ie
Summary
Phytoplankton is one of the aquatic commodities that have great potential to be utilized properly. Utilization of phytoplankton as a commodity trade or raw materials industry is still relatively limited. The use of single cell proteins from marine phytoplanktons such as Nannochloropsis oculata, Chlorella vulgaris, and Spirulina platensis, as a source of nutrients began to attract many interest to practitioners of fish feeding, compared to proteins contained in ground plants, proteins contained in vulgaris, and Spirulina platensis, higher ie. Several types of phytoplankton that have been cultivated and utilized by humans include Nannochloropsisoculata, Chlorella vulgaris, and Spirulina platensis, but the productivity of protein content of the three phytoplankton species differ by different species, place and time of maintenance (Chisty, 2007). In general phytoplankton requires nutrients consisting of macro nutrients and micro nutrients. The macro nutrient element consists of 9 N, P, K, C, Si, S, and Ca
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