This invention relates to the field of
functional food processing technology, specifically disclosing a functional
asparagus powder with high
saponin content and its preparation method. The method includes the following steps:
asparagus is sliced and microwaved to deactivate
enzyme activity; after pulping, a composite
regulator aqueous dispersion is added; the pH is adjusted and a
cellulose complex
enzyme is added for
enzymatic hydrolysis; then, it is pre-frozen and vacuum freeze-dried; finally, it is pulverized, sieved, and packaged under a
nitrogen atmosphere. The composite
regulator can dynamically stabilize and protect
saponin molecules through temperature-responsive behavior during
processing, significantly reducing thermal degradation. The resulting
asparagus powder has a
saponin content of 72-85 mg / g and is rich in flavonoids,
phenols, and
soluble dietary fiber. This product can be used in functional foods that improve sleep. When added at a 4% level to bread, noodles, or
meal replacement porridge, animal experiments have verified that it can significantly prolong
sleep time and increase the incidence of sleep in mice, exhibiting high
nutrient retention and good stability.