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Production of an indigenous micro algal concentrate from Nannochloropsis oculata (NANN CON): An alternate approach

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Relation http://eprints.cmfri.org.in/14004/
 
Title Production of an indigenous micro algal
concentrate from Nannochloropsis oculata
(NANN CON): An alternate approach
 
Creator Xavier, Biji
Megarajan, Sekhar
Ranjan, Ritesh
Balla, Vamsi
Padmajarani, S
Chinnibabu, B
Ghosh, Shubhadeep
 
Subject Aquaculture
Live Feed Culture
Algae
 
Description Nannochloropsis oculata is a marine micro algae used directly for green water larval rearing system and
indirectly for rotifer culture in marine finfish hatchery. Difficulties in algal culture during summer months can be overcome by the production of microalgal concentrate which can be stored and used when required.
Harvesting of micro algal biomass from the culture is considered as crucial step for the production of algal
concentrate. The use of centrifugation is the effective method for harvesting microalgae and steps involved
in the production of Nannochloropsis concentrate (NANN CON) is described in detail. Centrifugation which
could accumulate a cell count of an approximately 30 billion/ml from 300 litres of N. oculata culture was the
most efficient method as the cells in the concentrate retained shape and nutritional contents similar to cultured
fresh microalgae. Chilled NANN CON preserved with 10% glycerol proved advantageous had more than 80%
viable cells even after five months of storage. The preserved NANN CON is effective as feed for rotifer, algal
inoculum and Green water larval rearing systems. The cost for production of NANN CON was ` 1158.46 per
kilogram and in several aspects proved superior to other commercial products currently used.
 
Publisher ICAR - Central Marine Fisheries Research Institute
 
Date 2018
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/14004/1/MFIS%20238_1.pdf
Xavier, Biji and Megarajan, Sekhar and Ranjan, Ritesh and Balla, Vamsi and Padmajarani, S and Chinnibabu, B and Ghosh, Shubhadeep (2018) Production of an indigenous micro algal concentrate from Nannochloropsis oculata (NANN CON): An alternate approach. Marine Fisheries Information Service; Technical and Extension Series (238). pp. 7-12. ISSN 0254-380 X