2.2.2. Preparation of canned kale
The canning of vegetables using the sterilization method was
preceded by the following processing procedures: washing;
blanching; cutting into strips 2e3 cm wide or grinding; filling
metal cans 0.8 L in volume; pouring on hot water; closing and
preserving (sterilization). Two kinds of products were obtained:
from cut (CC) and ground (CG) raw material. Ground kale can be
used as an ingredient in vegetable mixtures or as a side dish.
Blanching was carried out as in the case of freezing. Leaves were
ground in an electric mill of 8 mm mesh size. Sterilization was
carried out in a pressure sterilizer using the following stages of
thermal processing: increasing the temperature to 100 Ce10 min;
increasing the temperature from 100 C to 118 Ce15 min; sterilization
at 118e120 Ce80 min; cooling to 100 Ce15 min; cooling to
30 Ce10 min. When completely cool and dry, cans containing
processed kale were placed in a cool chamber at a temperature
below 10 C and stored until analysis