Preparation method of antibacterial preservative paper as well as product and application thereof
A technology of fresh-keeping paper and natamycin, which is applied in application, layered products, fresh-keeping of fruits and vegetables, etc., can solve the problems of hard-to-dry fruits, affect the appearance of fruits, and fruit rot and deterioration, so as to increase the quantity and surface area, and keep good Bacteria and isolation effect, slow softening effect
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[0031] The preparation method of antibacterial fresh-keeping paper of the present invention, comprises the following steps:
[0032] Soak polypropylene non-woven fabric in natamycin aqueous solution, dry at low temperature, and then compound it with polypropylene non-woven fabric not soaked in natamycin solution to obtain antibacterial fresh-keeping paper . Here, low temperature means 40-50 degreeC.
[0033] The volume fraction of natamycin in the natamycin aqueous solution is 0.1-0.3%.
[0034] The polypropylene non-woven non-woven fabric is sterilized by ultraviolet light irradiation for more than 20 minutes before soaking.
[0035] The time for soaking the polypropylene non-woven non-woven fabric in the natamycin aqueous solution is not less than 5 minutes.
[0036] The configuration method of natamycin aqueous solution is as follows: add distilled water to the concentrated solution of natamycin with a volume fraction of 5%, and dissolve with stirring or ultrasonic assis...
Embodiment 1
[0041] Prepare antibacterial fresh-keeping paper by following steps:
[0042] 1. Preparation of fresh-keeping solution: Add distilled water to 5% natamycin concentrate at a volume ratio of 1:49, and stir well to prepare a 0.1% natamycin aqueous solution.
[0043] 2. Making fresh-keeping paper: Polypropylene non-woven non-woven fabric is sterilized by ultraviolet light for 20 minutes, soaked in the fresh-keeping solution for 5 minutes, drained and dried at low temperature, and laminated with a layer of non-woven fabric by hot-melt pressing. Polypropylene nonwoven fabric impregnated with natamycin solution.
Embodiment 2
[0045] Prepare antibacterial fresh-keeping paper by following steps:
[0046] 1. Preparation of fresh-keeping solution: add distilled water to 5% natamycin concentrate at a volume ratio of 1:24, and stir well to prepare a 0.2% natamycin aqueous solution.
[0047] 2. Make fresh-keeping paper: Polypropylene non-woven non-woven fabric is sterilized by ultraviolet light for 20 minutes, soaked in fresh-keeping solution for 5 minutes, drained and air-dried naturally, and combined with a layer of unsoaked by hot-melt pressing Polypropylene non-woven non-woven fabric of natamycin solution.
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