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Total carotenoids and β-ionone content of the different β-ionone producing strains. Three replicates of the each strain were cultivated in SC-URA medium with 2% glucose and 10% of dodecane for 48 h. Samples were processed for β-ionone measurements by GC-FID and total carotenoids by HPLC. *p < 0.05, **p < 0.01 t test, one-tailed comparison between measurements.
