Method for reducing heavy metal cadmium in rice through fermentation technology
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A fermentation process and a heavy metal technology are applied in the field of purifying and treating rice with excess cadmium, which can solve the problems of high safety, low operating cost, and reduce the cadmium content in rice, and achieve the effects of simple operation and easy realization.
Inactive Publication Date: 2015-10-21
GAEA GEM RICE
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Problems solved by technology
[0004] The technical problem solved by the present invention is to provide a method for reducing heavy metal cadmium in rice by using fermentation process. Cadmium content in rice to address deficiencies in related art
Method used
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Embodiment 1
[0027] (1) Rice: Prepare 10kg of ordinary processed rice (cadmium ≥ 0.2mg / kg), 11kg of water, 165g of salt, and reserve;
[0028] (2) Prepare mixed strains: Take 650g of fermented liquid fermented naturally for 24 hours during the production of fermented rice noodles, in which the ratio of Lactobacillus fermentum, Lactobacillus salivarius, Lactobacillus plantarum and Lactobacillus reuteri is 30:9:5 : 4, the total bacterial count of the mixed bacterial solution is about 102cfu / g, Lactobacillus delbrueckii 0.65g (Streptococcus thermophilus: Lactobacillus bulgaricus=1:1), set aside;
[0029] (3) Heating: Heat the water to about 42°C (ambient temperature 30°C), add the salt prepared in step (2), stir evenly, then add bacteria, stir evenly, and set aside;
[0030] (4) Soaking: directly add the rice in step (1) to the warm water prepared in step (3), fully contact the rice with water, rice: water = 1: 1.1;
[0031] (5) Fermentation: Incubate the mixture of rice and bacteria in step...
Embodiment 2
[0038] (1) Rice: Prepare 10kg of ordinary processed rice (cadmium ≥ 0.2mg / kg), 10kg of water, 260g of salt, and reserve;
[0039] (2) Prepare mixed strains: Take 88g of fermented liquid fermented naturally for 24 hours during the production of fermented rice noodles, in which the ratio of Lactobacillus fermentum, Lactobacillus salivarius, Lactobacillus plantarum and Lactobacillus reuteri is 30:9:5 : 4, the total bacterial count of the mixed bacterial solution is about 80cfu / g, 0.33g of Lactobacillus delbrueckii (Streptococcus thermophilus: Lactobacillus bulgaricus=1:1), set aside;
[0040] (3) Heating: Heat the water to about 40°C (ambient temperature 30°C), add the salt prepared in step (2), stir evenly, then add bacteria, stir evenly, and set aside;
[0041] (4) Soaking: directly add the rice in step (1) into the warm water prepared in step (3), fully contact the rice with water, rice: water = 1: 1.3;
[0042] (5) Fermentation: Incubate the mixture of rice and bacteria in s...
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Abstract
The invention discloses a method for reducing heavy metal cadmium in rice through a fermentation technology. Common long-grain rice serves as the raw material, fermentation liquid naturally fermented in the fermentation rice noodle manufacturing process serves as a fermentation broth stock solution, in the fermentation broth stock solution, lactobacillus fermenti, lactobacillus salivarius, lactobacillus plantarum and lactobacillus reuteri are used as zymophyte, streptococcus thermophilus and lactobacillus bulgaricus are used as functional bacteria, and a mixed zymophyte solution is obtained; then, the common long-grain rice with cadmium exceeding the standard is added into warm water mixed with the zymophyte solution to be soaked, the mixed zymophyte solution is used for fermentation, and filtering, cleaning and centrifugal dripping are conducted in sequence after the fermentation process is completed. By means of the method, equipment input in the industrial production process of cadmium reducing in the rice can be effectively reduced, the operation technology is simplified, and the loss of rice starch in the subsequent cleaning process is reduced. It is verified that the cadmium content in the rice can be obviously reduced, and the cadmium content can be reduced by more than 90 percent to the maximum.
Description
technical field [0001] The invention relates to the field of purification treatment of rice with cadmium exceeding the standard, in particular to a method for reducing heavy metal cadmium in rice by using a fermentation process. Background technique [0002] Due to the development of economy, the improvement of industrial technology level, and even the development of mining industry, the rice planting environment has been polluted. It is generally believed that the quality of edible rice is related to soil and water, and the adsorption effect of rice on cadmium is obviously stronger than that of corn, soybeans and other crop varieties. When the environment is polluted by cadmium, cadmium can be enriched in organisms and enter the human body through the food chain to cause chronic poisoning. Grains absorb and enrich cadmium from the soil through the root system. After cadmium is absorbed by the human body, cadmium-sulfur protein is formed in the body, selectively accumulate ...
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