Method for preparing edible packaging film by utilizing celery fiber
A technology of packaging film and celery, which is applied in the field of edible film, can solve the problems of low water vapor transmission rate, low tensile strength, poor strength, etc., achieve the inhibition of food microbial growth, good tensile strength, and avoid secondary pollution Effect
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example 1
[0019] Weigh 500g of fresh and mature celery, remove the leaves to obtain celery stems, wash them twice with water, cut them into 3 cm long celery segments, add the celery segments to 90°C hot water at a mass ratio of 1:5, and blanch for 5 minutes Then take it out, and then add it to 2.5% sodium metabisulfite solution according to the mass ratio of 1:5 and soak it, soak it for 1min, filter it out, wash it with clean water for 3 times, and get the treated celery; put the above-mentioned treated celery into the beater After beating for 40 minutes, celery slurry was obtained. The celery slurry was mixed with pH5.5 citric acid-sodium citrate buffer in a mass ratio of 1:1. After stirring and mixing for 20 minutes, 20 g of alkenyl succinic anhydride and 1 g of triethylamine were added, and the temperature was raised to After 60°C, keep stirring and react for 3 hours. After the reaction, cool to room temperature to obtain a modified celery slurry, and set aside; weigh 20g of sodium al...
example 2
[0022]Weigh 600g of fresh and mature celery, remove the leaves to obtain celery stems, and wash them with water for 3 times, cut them into 3.5cm long celery segments, add the celery segments to 95°C hot water at a mass ratio of 1:5, and blanch Take it out after 7 minutes, then add it to 2.5% sodium metabisulfite solution according to the mass ratio of 1:5 and soak it, soak it for 2 minutes, filter it out, and wash it with water for 4 times to get the processed celery; put the above-mentioned processed celery into the beater In the process, celery slurry was obtained after beating for 50 minutes. The celery slurry was mixed with pH5.5 citric acid-sodium citrate buffer in a mass ratio of 1:1. After stirring and mixing for 25 minutes, 30 g of alkenyl succinic anhydride and 2 g of triethylamine were added, and the temperature was raised. After reaching 65°C, keep stirring and react for 4 hours. After the reaction, cool to room temperature to obtain a modified celery slurry, and set...
example 3
[0025] Weigh 700g of fresh and mature celery, remove the leaves to obtain celery stems, wash them with water for 4 times, cut them into 4cm long celery segments, add the celery segments to 100°C hot water at a mass ratio of 1:5, and blanch for 10 minutes Then take it out, then add it to 2.5% sodium metabisulfite solution according to the mass ratio of 1:5 and soak it, soak it for 3 minutes, filter it out, wash it with water for 5 times to get the processed celery; put the above-mentioned processed celery into the beater , get celery slurry after beating for 60min, mix the celery slurry with pH5.5 citric acid-sodium citrate buffer in a mass ratio of 1:1, add 40g alkenyl succinic anhydride and 3g triethylamine after stirring and mixing for 30min, and heat up to After the reaction at 70°C, keep stirring and react for 5 hours. After the reaction, cool to room temperature to obtain a modified celery slurry, and set aside; weigh 30g of sodium alginate and add it to 500mL of deionized...
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