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Efficient antibacterial natural vegetable and fruit preservative and preparation method thereof

A fresh-keeping agent and a natural technology, which is applied in the fields of fruit and vegetable preservation, food preservation, and protection of fruits/vegetables with a coating protective layer. It can solve the problems of residual toxic substances, general fresh-keeping effect, and environmental pollution, so as to improve the fresh-keeping effect. , reduce processing costs, and reduce environmental pollution

Active Publication Date: 2019-05-07
江苏莱顿博瑞生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the in-depth research on preservatives, today's preservatives are mainly divided into chemical preservatives and natural preservatives. Chemical preservatives generally inhibit or kill microorganisms on the surface of fruits and vegetables by liquid immersion, spraying or gas fumigation, thereby It plays the role of anti-corrosion and fresh-keeping; the fresh-keeping effect of chemical preservatives is better, but some toxic substances often remain on the surface of fruits and vegetables, which is easy to cause pollution to the environment; the materials generally used in natural preservatives are mainly Rue, Compositae, Lauraceae, etc. Edible spice plants or Chinese herbal medicine preparations such as konjac and galangal, and extracts such as lotus leaf, garlic, tea, grape pigment, etc., use the antibacterial substances in the extracts to achieve freshness. The cost of natural preservatives is low and environmentally friendly, but the preservation effect generally

Method used

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  • Efficient antibacterial natural vegetable and fruit preservative and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] First prepare the raw materials, the preparation of the sunflower leaf extract: orient the sunflower leaves, wash, dry, crush and sieve to obtain the sunflower leaf dry powder; place the sunflower leaf dry powder in the ethanol solution, reflux and extract for 2 hours, and let the extract cool Suction filtration, then wash the filter residue twice with pure water, combine the filtrates, transfer to a volumetric flask, and obtain the sunflower leaf extract; the preparation of the extract of the quince leaves: take the quince leaves, wash, dry, crush and sieve, Prepare the dry powder of Vitex quinquefolium leaves; put the dry powder of Vitex quinquefolium leaves in a beaker, dissolve in distilled water, take a constant temperature water bath at 40°C for 10 minutes, then raise the temperature to 70°C, extract under ultrasonic waves for 30 minutes, and the ultrasonic power is 100W; put the extract in cold suction and filter , then wash the filter residue twice with pure wate...

Embodiment 2

[0059] First prepare raw materials, preparation of sunflower leaf extract: orient sunflower leaves, wash, dry, crush and sieve to obtain sunflower leaf dry powder; place sunflower leaf dry powder in ethanol solution, reflux extraction for 2.5h, put the extract Cold suction filtration, and then wash the filter residue with pure water for 3 times, combine the filtrates, transfer to a volumetric flask, and obtain the sunflower leaf extract; preparation of the extract of the quince leaves: take the quince leaves, wash, dry, crush and sieve , to prepare the dry powder of Vitex quintana leaves; put the dry powder of Vitex quintana leaves in a beaker, dissolve them in distilled water, take a constant temperature water bath at 45°C for 13 minutes, then raise the temperature to 76°C, extract for 35 minutes under ultrasonic waves, and the ultrasonic power is 105W; put the extracts in a cold pump filter, then wash the filter residue with pure water for 3 times, combine the filtrates, and ...

Embodiment 3

[0066] First prepare the raw materials, the preparation of the sunflower leaf extract: orient the sunflower leaves, wash, dry, crush and sieve to obtain the sunflower leaf dry powder; put the sunflower leaf dry powder in the ethanol solution, reflux and extract for 3 hours, and let the extract cool Suction filtration, then wash the filter residue 3 times with pure water, combine the filtrates, transfer to the volumetric flask, and obtain the sunflower leaf extract; the preparation of the extract of the quince leaves: take the quince leaves, wash, dry, crush and sieve, Prepare the dry powder of Vitex quintana leaves; put the dry powder of Vitex quintana leaves in a beaker, dissolve them in distilled water, take a constant temperature water bath at 50°C for 15 minutes, then raise the temperature to 85°C, extract for 40 minutes under ultrasonic waves, and the ultrasonic power is 110W; put the extracts in a cold suction filter , and then washed the filter residue with pure water fo...

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Abstract

The invention discloses an efficient antibacterial natural vegetable and fruit preservative and a preparation method thereof. The invention discloses efficient antibacterial natural vegetable and fruit preservative and the preparation method thereof. The preservative comprises the following components: modified sunflower leaf extractive liquid, equisetum arvense leaf extractive liquid, sodium alginate extractive liquid, malic acid extractive liquid and citric acid. The sunflower leaf extractive liquid is prepared by extracting sunflower leaves, and the sunflower leaf extractive liquid containsrich glutamine. The technical solution firstly prepares the sunflower leaf extractive liquid by using reflux extraction, and then modifies the sunflower leaf extractive liquid through a modifier, sothat glutamine in the sunflower leaf extractive liquid is reduced to amine, and then organic silicon quaternary ammonium salt is prepared through the reaction of the amine and organic silicon. The technical solution prepares the preservative by using natural raw materials, not only reduces the pollution to the environment, has low cost, is easy for industrialization, and improves the sterilizationeffect of the preservative, and the preservative has good practicability.

Description

technical field [0001] The invention relates to the field of vegetable and fruit fresh-keeping agents, in particular to a high-efficiency antibacterial natural vegetable and fruit fresh-keeping agent and a preparation method thereof. Background technique [0002] Antistaling agent is a kind of auxiliary means and technical method for short-term fresh-keeping of food in order to prevent food from rotting and deterioration, keep the nutritional content, color, fragrance and flavor unchanged. [0003] With the in-depth research on preservatives, today's preservatives are mainly divided into chemical preservatives and natural preservatives. Chemical preservatives generally inhibit or kill microorganisms on the surface of fruits and vegetables by liquid immersion, spraying or gas fumigation, thereby It plays the role of anti-corrosion and fresh-keeping; the fresh-keeping effect of chemical preservatives is better, but some toxic substances often remain on the surface of fruits an...

Claims

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Application Information

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IPC IPC(8): A23B7/154A23B7/16
CPCY02A40/90
Inventor 尤金吴双华周美亮
Owner 江苏莱顿博瑞生物科技有限公司
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