8. Experimental procedure
8.1 Extrusion cooking
For the preparation of the different recipes, the fat content was considered. It had to
be below 5%, because no expansion would occur if it was higher. The fat content of the
five mixtures was ranging between 2.63 and 4.53% (ascertained during calculation), as
is shown in tab. 10. Because of the high fat content of Sacha Inchi flour and press cake,
the maximum amount of Sacha Inchi press cake that could be added was 10% and of
Sacha Inchi flour 40%. The rest of each mixture was consisting of maize flour with a fat
content of 2%. During extrusion cooking, which was starting with the recipe with the
lowest fat content, each mixture was collected in a separate pot and the fraction
received at the beginning of a new mixture was also collected separately to avoid
mixing the different mixtures. In fig. 13 an example of extrudates with 20% SI flour is
shown.