Composite leaching vegetable fresh-keeping agent for tragus berteronianus and preparation method of fresh-keeping agent
The technology of a preservative and lice grass is applied in the field of lice grass compound extraction vegetable preservative and its preparation, which can solve the problems of death, damage to human health, food safety and the like, and achieves low cost, convenient use and good fresh-keeping effect. Effect
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Embodiment 1
[0054] A kind of preparation method of lice grass compound extraction vegetable preservative, comprises the following steps:
[0055] (1) Lice grass leaf pretreatment
[0056] Weigh 50 parts of lice grass leaves, put them into the pool and wash them with a sprayer for 13 minutes, remove them and put them in a grid tray to drain for 26 minutes, then transfer them to a drying oven at 60 °C for 48 minutes, and dry the dried lice Grass leaves are poured into the pulverizer for crushing, screened through 200 mesh, and set aside;
[0057] (2) Preparation of Licegrass Leaf Extract
[0058] Pour the lice grass leaf powder prepared in step (1) into a storage tank, and add 70% corn alcohol solution to mix according to the powder: corn alcohol solution ratio of 1:200, soak for 6 h, transfer to an ultrasonic extractor, and turn on the power , adjust the stirring speed to 65 rpm, the ultrasonic frequency to 40 KHZ, and the temperature to 45 °C, and after extracting for 1 h, turn off the ...
Embodiment 2
[0079] A kind of preparation method of lice grass compound extraction vegetable preservative, comprises the following steps:
[0080] (1) Lice grass leaf pretreatment
[0081] Weigh 56 parts of lice grass leaves, put them into the pool and wash them with a sprayer for 13.5 minutes, remove them and put them in a grid tray to drain for 30 minutes, then transfer them to a drying oven at 60 °C for 48 minutes, and dry the dried lice The grass leaves are poured into the pulverizer for crushing, screened through 300 mesh, and set aside;
[0082] (2) Preparation of Licegrass Leaf Extract
[0083] Pour the lice grass leaf powder prepared in step (1) into a storage tank, and add 65% corn alcohol solution to mix according to the powder: corn alcohol solution ratio of 2.5:280, soak for 8 h, transfer to an ultrasonic extractor, and turn on the power , adjust the stirring speed to 80 rpm, the ultrasonic frequency to 40 KHZ, and the temperature to 50 °C. After extracting for 1.5 h, turn of...
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