Method for preparing dietary fiber flour from sweet potato starch production waste
A technology of dietary fiber powder and sweet potato starch, which is applied in the directions of food preparation, application, food science, etc., can solve the problems of incapable of making full use of sweet potato starch waste liquid, low utilization rate of potato residue, and low yield of dietary fiber, etc., and can reduce impurities. The effect of increasing the content, increasing the yield and improving the utilization rate
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Embodiment 1
[0031] A method for preparing dietary fiber powder with sweet potato starch production waste, is characterized in that, comprises the following steps:
[0032] ①Put the sweet potato slag produced during the production of sweet potato starch into an ultra-low temperature freezer at -60°C for 3 hours and freeze for 3 hours. The frozen sweet potato pieces are crushed into sweet potato ice slag at room temperature with a 100-mesh grinder;
[0033] ②Put the sweet potato ice slag obtained in step ① into an insulated container with a high-pressure gas injection device at the bottom, add sweet potato starch production waste liquid with a temperature 4 times the weight of sweet potato ice slag at a temperature of 55°C, and add citric acid to adjust the pH of the solution to 4.0, then add glucoamylase, add 150U of glucoamylase per gram of sweet potato ice slag, use the bottom high-pressure gas injection device to continuously spray high-pressure gas into the container, the pressure of th...
Embodiment 2
[0041] A method for preparing dietary fiber powder with sweet potato starch production waste, comprising the following steps:
[0042] ①Sweet potato slag produced during the production of sweet potato starch is placed in an ultra-low temperature freezer at -80°C for 6 hours, and the frozen sweet potato pieces are crushed into sweet potato ice slag at room temperature with a 150-mesh grinder;
[0043] ②Put the sweet potato icicles obtained in step ① into an insulated container with a high-pressure gas injection device at the bottom, add sweet potato starch production waste liquid that is 4 times the weight of sweet potato icicles at a temperature of 65°C, and add acetic acid to adjust the pH of the solution to 4.5 , then add glucoamylase, add 300U glucoamylase per gram of sweet potato ice slag, use the bottom high-pressure gas injection device to continuously spray high-pressure gas into the container, use the bottom high-pressure gas injection device to continuously spray high-...
Embodiment 3
[0051] A method for preparing dietary fiber powder with sweet potato starch production waste, comprising the following steps:
[0052] ①Sweet potato slag produced during the production of sweet potato starch is placed in an ultra-low temperature freezer at -80°C for 4 hours, and the frozen sweet potato pieces are crushed into sweet potato slag at room temperature with a 150-mesh grinder; After thawing at low temperature, put it into the ultra-low temperature freezer at a temperature of -80°C for 4 hours, take it out, and use a 150-mesh pulverizer to pulverize it into sweet potato ice slag at room temperature, and repeat the freezing-thawing pulverization 3 times;
[0053]②Put the sweet potato icicles obtained in step ① into a heat preservation container with a high-pressure gas injection device at the bottom, add sweet potato starch production waste liquid at a temperature 4 times the weight of sweet potato icicles at a temperature of 60°C, and add citric acid to adjust the pH ...
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