A kind of vegetable and fruit preservative, its preparation method and application
A technology for preservatives, fruits and vegetables, applied in the field of preservatives for fruits and vegetables, can solve the problems of difficult cleaning, unfavorable human health, etc., and achieve the effects of improving fresh-keeping efficiency, ensuring human health and dietary safety, and slowing down the decrease in hardness
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Embodiment 1
[0046] Measure 125g of mugwort powder into a conical flask, add 500ml of water, 50% ethanol (volume concentration), ethanol, and ethyl acetate respectively, soak for 24 hours and then ultrasonicate for half an hour, pour the extract into a filter bag, and squeeze out fully The filtrate, the crude filtrate was suction filtered to obtain a primary extract, and 500ml of solvent was added for extraction to obtain a secondary extract. After combining the extracts, the extracts were placed on a water bath to evaporate the solvent, and freeze-dried to obtain extract powders with four different solvents.
[0047] Dissolve an appropriate amount of water extract and 50% ethanol extract in ultrapure water to prepare the water extract solution of mugwort powder (experimental group 1) and 50% alcohol extract solution of mugwort powder (experimental group) with a mass concentration of 0.01g / ml. Group 2), taking ultrapure water as blank control (control group 1); measuring ethanol extract and...
Embodiment 2
[0053] Get the ultrapure water in the ultrapure water machine.
Embodiment 3
[0055] Take 1.25 g of the ethyl acetate extract of mugwort powder in Example 1, add 5 ml of ethanol, place it in an ultrasonic device for 1 hour to make it fully dissolved, transfer it to a beaker after dissolving, and add 175 ml of water on a digital display constant temperature magnetic stirrer Mix well and get it.
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