Triplicates of each sample (30 g) were extracted with 50 ml of THF stabilised with 0.01% BHT until the extracts became colourless. One millilitre of a solution of trans-b-apo-80-carotenal (1 mg/ml), as internal standard, was added.
Triplicatesof each sample (30 g) were extracted with 50 ml of THFstabilised with 0.01% BHT until the extracts became colourless.One millilitre of a solution of trans-b-apo-80-carotenal (1 mg/ml),as internal standard, was added.