Low-salt soy sauce and preparation method thereof
A low-salt soy sauce and soy sauce technology, which is applied in the food field to achieve the effects of good health, rich ester flavor and sauce flavor, and delicious and mellow taste
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Embodiment 1
[0022] A preparation method of low-salt soy sauce, specifically comprising the following steps:
[0023] (1) Koji making: the steamed soybean meal and roasted wheat are ground into fine powder, mixed according to the weight ratio of 1:1, put into the koji making disc after being inserted into Aspergillus oryzae, cultured at 30°C for 40h, continuously Ventilate, and turn over twice during the period;
[0024] (2) Fermentation: put the koji prepared above into a fermentation tank, sprinkle salt water into the tank; add 2 tons of 16% salt water to 1 ton of koji, the fermentation temperature is 15°C, and the fermentation time is 6 months;
[0025] (3) Extract raw soy sauce: squeeze the fermented product to extract raw soy sauce;
[0026] (4) Pretreatment: Raw soy sauce is filtered with a filter membrane with a pore size of 0.5 μm;
[0027] (5) Desalination: use electrodialysis to desalt soy sauce; the current density of electrodialysis is 200A / m 2 , the operating temperature of...
Embodiment 2
[0031] A preparation method of low-salt soy sauce, specifically comprising the following steps:
[0032] (1) Koji making: steamed soybean meal and roasted wheat are ground into fine powder, mixed according to the weight ratio of 1:1.2, inserted into Aspergillus oryzae and sent to the koji making disc, 35 ° C, cultured for 41 hours, continuous Ventilate, and turn over twice during the period;
[0033] (2) Fermentation: the koji prepared above is put into a fermenter, and salt water is sprinkled into the tank; 1 ton of koji is added with 1 ton of 18% salt water, the fermentation temperature is 25° C., and the fermentation time is 6 months;
[0034] (3) Extract raw soy sauce: squeeze the fermented product to extract raw soy sauce;
[0035] (4) Pretreatment: Raw soy sauce is filtered with a filter membrane with a pore size of 0.8 μm;
[0036] (5) Desalination: use electrodialysis to desalt soy sauce; the current density of electrodialysis is 300A / m 2 , the operating temperature...
Embodiment 3
[0040] A preparation method of low-salt soy sauce, specifically comprising the following steps:
[0041] (1) Koji making: steamed soybean meal and roasted wheat are ground into fine powder, mixed according to the weight ratio of 1:1.5, inserted into Aspergillus oryzae and sent to the koji making disc, cultured at 40°C for 42 hours, continuously Ventilate, and turn over twice during the period;
[0042] (2) Fermentation: put the koji prepared above into a fermentation tank, and sprinkle salt water into the tank; add 1 ton of 19% salt water to 1 ton of koji, the fermentation temperature is 35° C., and the fermentation time is 6 months;
[0043] (3) Extract raw soy sauce: squeeze the fermented product to extract raw soy sauce;
[0044] (4) Pretreatment: Raw soy sauce is filtered with a filter membrane with a pore size of 1 μm;
[0045] (5) Desalination: use electrodialysis to desalt soy sauce; the current density of electrodialysis is 400A / m 2 , the operating temperature of th...
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