The invention relates to the technical field of food and feed additives, and discloses application of a tea
polyphenol preparation in reduction of egg
cholesterol. The tea
polyphenol preparation comprises high-purity tea
polyphenol, a
phospholipid complex,
phytosterol,
bile acid binding resin and a microcapsule
wall material. By limiting the purity and component composition of tea polyphenol, a
phospholipid-mediated nano
delivery system is constructed, a
dual mechanism of
bile acid adsorption and
phytosterol competitive absorption is introduced, and the stability of
active components in the
feed processing and
digestion process is guaranteed by adopting a microcapsule technology; the technical scheme which is definite in component, clear in action path, convenient to use and repeatable in effect is formed, the defects that in the prior art, multiple components are mixed, the mechanism is unknown, operation is tedious, raw materials are limited and the like are effectively overcome, and reliable
technical support is provided for industrial production of the low-
cholesterol functional eggs.