The present invention discloses a preparation method for high-
fiber recombinant
asparagus chips, and belongs to the
deep processing field of
fruits and vegetables. The
asparagus chips use discarded scraps of old stems and old roots from
asparagus production enterprises as raw materials, and are prepared by the following steps: pre-treating the raw materials,
blanching the materials in hot water, preserving color, conducting beating, mixing the materials with
adjuvant materials, cooking the mixture for a short time, placing the mixture on plates,
drying the mixture under vacuum by two section-type
microwave to a
moisture content of 10% -15%,
drying the mixture by short- and medium-wave
infrared method under vacuum to a
moisture content below 5%, and packaging the mixture to obtain the end products. The
dietary fiber content of the asparagus chips is 8.35% - 10.27%, and every 100g of the chips contains flavonoids 12.73-16.86 mg,
polysaccharide 9.34-11.28 mg. The preservation rate of
chlorophyll is 70% to 75% after
processing, and the
chip breaking force is 1123-1443 g. The preparation method provides a novel method for taking full
advantage of asparagus scraps, and the
microwave vacuum drying and the short- and medium-wave
infrared vacuum drying have advantages of quick
drying, low temperature and higher
nutrient retention rate, etc. The asparagus chips are high in
cellulose content, rich in flavonoids,
polysaccharide and other active substances, crispy and delicious in taste and high in nutritional value. Therefore, the asparagus chips are leisure crisps for people of all ages.