Preparation method for bean curd thin sheets taking soybean protein as raw material
A technology of soybean protein, the main raw material, applied in the field of food processing, which can solve problems such as difficult control, long preparation process, and a lot of waste water and waste residue, and achieve the effect of improving color, improving production stability, and improving environmental pollution.
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[0012] Example 1
[0013] In 20 liters of water, add about 800g of SPI (the soy protein content of SPI is about 90% (W / W), and the water is about 6% (W / W)) to make an SPI slurry with a protein concentration of about 3.5% (W / V). Pass the slurry through a colloid mill to fully dissolve it and reduce the problem of insoluble powder particles, and then filter (100 mesh sieve), heat treatment, the center temperature reaches 90 ℃, the constant temperature for 10 minutes, add 5.5% (W / V) refinement Soybean oil and 1.5% (W / V) sucrose are pre-emulsified with a high-speed mixer for 2-3min, and homogenized with a high-pressure homogenizer under a high pressure of 20MPa (the liquid temperature is maintained at 60~75℃ during homogenization), Obtain a soybean protein emulsion.
[0014] The average particle size of the soy protein emulsion after homogenization is about 20 μm. Pour the soy protein emulsion into a 45×75cm tofu skin tank (about 6cm in depth), heat it, set the temperature to 90℃, co...
Example Embodiment
[0016] Example 2
[0017] In 20 liters of water, add about 1000g of SPI (the soy protein content of SPI is about 90% (W / W), and the water content is about 6% (W / W)) to make an SPI slurry with a protein concentration of about 4.2% (W / V). Pass the slurry through a colloid mill to fully dissolve it and reduce the problem of insoluble powder particles, then filter (100 mesh sieve), perform ultra-high temperature instantaneous heat treatment, at 135°C for 20 seconds, and after partial cooling, add 4.5% (W / V) Refined soybean oil and 2.3% (W / V) sucrose are pre-emulsified with a high-speed stirrer for 2-3min, and homogenized with a high-pressure homogenizer under a high pressure of 20MPa (the liquid temperature is maintained at 60~ 75°C) to obtain a soybean protein emulsion.
[0018] The average particle size of the soy protein emulsion after homogenization is about 12 μm. Pour the soybean protein emulsion into a 45×75cm bean curd skin tank, heat it, set the temperature to 90℃, count th...
Example Embodiment
[0019] Example 3
[0020] In 20 liters of water, add about 1200g of SPI (the soy protein content of SPI is about 90% (W / W), and the water content is about 6% (W / W)) to make an SPI slurry with a protein concentration of about 5.1% (W / V). Pass the slurry through a colloid mill to fully dissolve it, and reduce the problem of insoluble powder particles, then filter (100 mesh sieve), heat treatment, the center temperature reaches 90 ℃, the constant temperature for 10 minutes, add 3.5% (W / V) to refine Soybean oil and 3.0% (W / V) sucrose are pre-emulsified with a high-speed stirrer for 2-3min, and homogenized with a high-pressure homogenizer under a high pressure of 20MPa (the liquid temperature is maintained at 60~75℃ during homogenization), Obtain a soybean protein emulsion.
[0021] The average particle size of the soy protein emulsion after homogenization is about 11 μm. Pour the soybean protein emulsion into a 45×75cm bean curd skin tank, heat it, set the temperature to 90℃, count t...
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