Passion fruit crease-resist color-protecting method

Abstract

The invention provides a passion fruit crease-resist color-protecting method. A layer of fresh keeping film coating agent is smeared onto the surface of a picked passion fruit; air drying is performedat the normal temperature so that a layer of film covers the surface of the passion fruit; the crease-resist color-protecting effect is achieved. The fresh keeping film coating agent is prepared frompomelo peel polysaccharide, passion fruit pectin, ginger essential oil, chlorogenic acid, alpha-glucosidase and gamma-polyglutamic acid compound chitosan; the water preservation performance of the gamma-polyglutamic acid and pomelo peel polysaccharide is used; the crease generation due to surface water loss of the passion fruit can be reduced; the peel is promoted to absorb calcium ions and chlorogenic acid by the ginger essential oil; the alpha-glucosidase acts on the passion fruit pectin to generate fragrance, so that the passion fruit maintains the flavor, the color and the luster. The prepared fresh keeping film coating agent can be used for effectively preventing the crease generation due to water loss after the picking of the passion fruit and the color change after the browning; the flavor of the passion fruit in the fresh keeping process can be maintained; a good effect is achieved; the cost is low; green and healthy effects are achieved.

Description

technical field [0001] The invention belongs to the field of food preservation, and in particular relates to a method for anti-wrinkle and color protection of passion fruit. Background technique [0002] Passion fruit juice is rich in nutrition and has a fragrant smell. It has the aroma of various fruits and is called "passion fruit". The aroma substances of passion fruit after picking are sensitive to the storage environment, and with the prolongation of picking time, the aroma gradually disappears; at the same time, the skin of passion fruit gradually ages due to the prolongation of time, loses water and produces browning, wrinkling and other phenomena, which affects the quality of passion fruit. Long-term preservation, storage, transportation and sales, etc. At present, the preservation methods of passion fruit mainly include low temperature preservation, modified atmosphere packaging and film preservation. Low temperature preservation can effectively inhibit the growth ...

AI Technical Summary

Problems solved by technology

[0005] Coating fresh-keeping is a low-cost fresh-keeping method, but the existing fresh-keeping films are mostly made of chemically synthesized substances, which are difficult to degrade and have defects such as high air permeability and high water loss rate. Not conducive to product sales, needs further improvement

Images