A kind of production method of fish source gelatin and nanofiber film
A nanofiber membrane and nanofiber technology, which is applied in the preparation of animal glue or gelatin, animal fiber, fiber treatment, etc., can solve the problems that the high-efficiency preparation technology of nanofiber membrane has not been reported, and avoid unsafe factors and religious customs Effects of confinement, strong hydrophilicity, and high porosity
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Embodiment 1
[0033] (1) Thaw 100kg of sturgeon swim bladder, wash, crush, and pass through a 10-mesh sieve; add 400L of industrial alcohol, and degrease with 25W / L ultrasonic wave at 35°C for 9 hours; Solvent oil degreasing for 9 hours; finally press-filtered and air-dried to obtain 30 kg of defatted swim bladder;
[0034] (2) Put the defatted fish maw obtained in step (1) into 250L of 52°C hot water, stir continuously and slowly for 45min, then centrifuge at 15000g for 45min, take the supernatant, and put it under the conditions of inlet temperature 190°C and exhaust temperature 110°C Spray drying to obtain 23kg of fish-derived gelatin with excellent sensory, physical and chemical properties and functional properties;
[0035] Preparation of nanofiber membrane: 1 kg of fish-derived gelatin obtained in step (2) is dissolved in 3.7 L of 22% (v / v) acetic acid-water solution; at 1.5 μL / min of feed, voltage 18 kV, needle No. 21, needle point and collection Electrospinning was carried out on a...
Embodiment 2
[0037] (1) Thaw 100kg of sturgeon swim bladder, wash, crush, and pass through a 12-mesh sieve; add 300L of industrial alcohol, and extract and degrease with 30W / L ultrasonic wave at 25°C for 12 hours; No. 6 solvent oil extraction and degreasing for 12 hours; finally press-filtered and air-dried to obtain 31 kg of defatted swim bladder;
[0038] (2) Put the defatted fish maw obtained in step (1) into 210L of hot water at 55°C, stir continuously and slowly for 60 minutes, then centrifuge at 20,000g for 30 minutes, take the supernatant, and put it under the conditions of an inlet temperature of 200°C and an exhaust temperature of 120°C Spray-dried to obtain 23kg of fish-derived gelatin with excellent sensory, physical and chemical properties and functional properties.
[0039] Preparation of nanofibrous membrane: 1kg of fish-derived gelatin obtained in step (2) is dissolved in 4L of 25% (v / v) acetic acid-water solution; at 2 μL / min of feed, voltage 20kV, needle No. 22, the distan...
Embodiment 3
[0041] (1) Thaw 100kg of sturgeon swim bladder, wash, crush, and pass through a 7-mesh sieve; add 500L of industrial alcohol, and extract and degrease with 20W / L ultrasonic wave at 40°C for 6 hours; No. 6 solvent oil extraction and degreasing for 6 hours; finally press-filtered and air-dried to obtain 30 kg of defatted swim bladder;
[0042] (2) Put the defatted fish maw obtained in step (1) into 300L of hot water at 50°C, stir continuously and slowly for 30 minutes, then centrifuge at 10,000g for 60 minutes, take the supernatant, and put it under the conditions of an inlet temperature of 180°C and an exhaust temperature of 100°C Spray drying to obtain 22kg of fish-derived gelatin with excellent sensory, physical and chemical properties and functional properties;
[0043]Preparation of nanofiber membrane: 1 kg of fish-derived gelatin obtained in step (2) is dissolved in 3.4 L of 20% (v / v) acetic acid-water solution; Under the conditions of 12cm distance between the device and...
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