Not bad for biodisel production Dunaliella salina or Chlorella. Not only the quantity of oil from biomas is important but also the fatty acid composition.
This paper can you read as comparison
http://ejournal.undip.ac.id/index.php/ijred/article/view/3168/2844
ex, Nannochloropsis sp. has oil /fat contents 31–68
Nanochloris sp. and Nanochloropsis sp. are usually preferred. But in my opinion, there is nothing called the "best available strain" for algal biodiesel production because say for example, an algal species can produce a huge quantity of lipids but the lipid production rate is low then time and cost involved in the cultivation of this algae would not be best suited. However the other extreme where an algal species can produce tiny quantity of lipids but at a higher production rate would still not be suitable. There fore other parameters such as the algal growth rate, lipid production rate and quantities and algal inhabiting conditions (photoreactor or open ponds) are important in deciding which strain to choose for biodiesel production.
To my understanding, we cannot name any specie as best strain for biodiesel production, as many factors count. Though Botryococcus braunii (29 - 75%) and Schiochytrium (50 - 77%) are mentioned in literature with high oil yield, but it still depends on the environment they growth in and the time and other facilities they require to grow. Also depends which strain you can find for your work.
Good luck!
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