Fresh sweet potato stems and leaves biological source solid-liquid-gas three-phase three-stage self-starting shelf special preservative

Abstract

The invention discloses a preservative special for a fresh sweet potato stem leaf biological source solid-liquid-gas three-phase three-level self-start type shelf. The preparation method of the preservative is as follow: plant essences are embedded in a porous starch, the embedding porous starch with plant essences inside and newly-added plant essences are used as the core materials and embedded by propolis, chitosan, sodium alginate and carboxymethyl cellulose sodium as porous carriers, the pores on the sol surfaces of the sodium alginate and carboxymethyl cellulose sodium are sealed by glucose and a low-gluten flour, the mixture is solidified and then dried in vacuum, plant essences and absolute ethyl alcohol are sprayed on the surface of the mixture; and the mixture is subjected to vacuum packaging to finally form the preservative special for a fresh sweet potato stem leaf biological source solid-liquid-gas three-phase three-level self-start type shelf. During the whole application process, the preservative can form a gradually-converting solid-liquid-gas three-phase three-level release type self-start type releasing mode in which solid state is converted into liquid state and then liquid state is converted into gas state, and the preservative is convenient to use and has good preservation effect.

Description

technical field [0001] The invention belongs to the technical field of fresh-keeping vegetables, and relates to a fresh-eating sweet potato stem and leaf biological source solid-liquid-gas three-phase two-stage self-starting shelf special preservative. Background technique [0002] Sweet potato belongs to Convolvulaceae sweet potato, commonly known as sweet potato, white potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, sweet potato and so on. Sweet potato stems and leaves contain a variety of bioactive components, which can be used as traditional Chinese medicine to treat various diseases. Sweet potato stems and leaves have strong stress resistance, wide adaptability, less pollution, high yield, fast growth, and less pests and diseases, and the use of pesticides is very low, so it is an ideal pollution-free vegetable. The medical field has listed sweet potato as one of the anti-cancer vegetables, and nutritionists call it "longevity food". The ...

AI Technical Summary

Problems solved by technology

The annual output of sweet potato stems and leaves in my country is about 100 million tons or more. At present, except for a small part of feeding livestock, the rest are discarded as waste. One of the reasons is that the sweet potato stems and leaves are easy to lose water after picking, among which the water loss of leaves The most serious, and the browning of leaves occurs, and the economic losses brought by more farmers are greater

The release rate of traditional chemical preservatives is relatively fast. Excessive use will easily cause damage to the stems and leaves of sweet potatoes, easily cause chemical residues, and easily form microbial resistance after long-term use. It is not suitable for fresh-keeping of sweet potato stems and leaves.