The invention relates to the technical field of
food processing, in particular to a
powder-coated
coating layer capable of prolonging the
shelf life of hard candies and a preparation method of the
powder-coated
coating layer. Comprising the following steps: preparing syrup water, preparing
sugar liquid, preparing high-temperature massecuite, preparing blended massecuite, and performing a
powder coating process by using the syrup water to obtain the candy containing the
powder coating layer. Three raw materials including water, white granulated
sugar and Arabic gum are compounded for use, the raw materials are boiled to be fully melted and fused, the mixture is uniformly wrapped on the surface of the formed candy and is blown to be dry through dry
cold air, the Arabic gum can form a uniform
colloid protection layer to isolate the surface of the candy from air, and the white granulated
sugar is taken as a medium through the water, so that the candy has a good taste. After being boiled, the powder is thoroughly fused with Arabic gum, and after being dried, a hard and firm sand return layer which is pink white, namely a
powder coating layer is formed. The powder-coated coating layer can play roles in isolating air, preventing
moisture absorption and preventing adhesion on the hard candies.