Determination of oil in rapeseed

The species we have dealt with is winter rape Brassica napus L.). See comments in Chapter 4, Oils, fats and waxes, and the reference to Hughes (1969). 

Oilseeds with hard shells must first be crushed to allow the solvent to reach the seed contents. The hard round rapeseed is easily fractured using a 

Calculation. Divide the weight lost by the weight of sample and multiply by 100 to obtain the percentage oil in the seed sample. A separate sample for moisture content must be weighed at the same time as the sample for oil extraction if the percentage oil in seed DM is required. 

Method 7.9. Determination of pepsin-ceiiuiase digestibiiity of piant materiai 

See the discussion in Chapter 4, Cellulase digestibility. This method is based on that of Jones and Hayward (1973 and 1975). 

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