Eleocharis tuberosa peel extract bacteriostasis preservative and preparation and application thereof

Abstract

The invention relates to an eleocharis tuberosa peel extract bacteriostasis preservative comprising 3-5% of eleocharis tuberosa peel extract, 0.2-2% of ginger extract, 0.5-2% of lemon extract, 0.5-1% of chitosan and the balance being water to 100%. A preparation method of the eleocharis tuberosa peel extract bacteriostasis preservative includes the steps: drying eleocharis tuberosa peels prior to crushing and screening; adding eleocharis tuberosa peel powder into water to be subjected to boiling and ultrasonic wave assisted lift; filtering or centrifuging the obtained solution prior to taking supernatant; cleaning ginger and lemon fruit prior to juicing, then putting the juice and chitosan dissolved in the lemon juice together into the supernate for soaking, and filtering to obtain the bacteriostasis preservative. An application method of the bacteriostasis preservative includes using the bacteriostasis preservative for soaking fruit and vegetables for 5-10min. The bacteriostasis preservative has the characteristic of strong bacteriostasis capability, and causes no pollution to human and the environment in use on fruit and vegetables.

Description

technical field [0001] The invention belongs to the technical field of food engineering and fresh-keeping, and in particular relates to an antibacterial and fresh-keeping agent of water chestnut skin extract and its preparation and application. Background technique [0002] Fresh fruits and vegetables will cause huge losses due to disease and rot during the transportation and storage stages. In order to reduce the post-harvest loss of fruits and vegetables, fresh-keeping treatment during storage is very important. Chemical fungicides and preservatives have become the most commonly used fresh-keeping methods because of their good fresh-keeping effect, low cost and easy operation. However, the residues of chemical bactericides and antistaling agents will endanger human health. As people pay more and more attention to food safety, there is an urgent need to replace the extensive use of chemical bactericides and preservatives with healthy and environmentally friendly antibacter...

AI Technical Summary

Problems solved by technology

[0004] Previous studies have discovered the antibacterial and antibacterial effects of water chestnut skin extracts, but in the field of fruit and vegetable preservation, there have been no reports on the composite antibacterial and antistaling agent products and application technologies with water chestnut skin extracts as the main component.

Images