Cooking rice for 70 minutes cuts cadmium levels by 60%: The rice cooker capable of removing heavy metals from rice fills a gap in the market.

I am from You County, Hunan Province, and started working in Guangdong in 1990. I successively studied under Mr. Chen Jianheng, a physics doctor from the University of Tokyo, Japan (1990-1996). In 1996, I joined Hong Kong Huahui Electromechanical Technology Engineering Company, and studied under Mr. Witton from the Development Department of German Roland Printing Equipment Company, specializing in the professional installation and maintenance of German Roland printing presses. In 2011, I returned to Hunan and founded Chaling Qinghe Daoxiang Rice Industry Co., Ltd. in Chaling County. In 2013, the heavy metal pollution incident of rice in Hunan dealt a heavy blow to Hunan's grain industry. Consumers were extremely horrified at the mention of it, and the country also suffered economic losses. In order to solve the hidden health risks to consumers caused by heavy metal pollution in grain, our enterprise has invested funds in research to solve this social problem, and has obtained technical R&D achievements that can decompose harmful substances in rice during the process of home cooking rice: R&D and implementation of key technologies for controllable cooking extraction and degradation of heavy metals in rice (rice cooker that removes heavy metals and pesticide residues from rice). The cooking process can significantly reduce the content of heavy metals and other harmful substances such as pesticide residues in rice, safeguarding the health of consumers.

Core Technology of Project R&D

R&D and implementation of key technologies for controllable cooking extraction and degradation of heavy metals in rice (rice cooker that removes heavy metals and pesticide residues from rice). The key core technology involves a method that does not add any chemical substances and does not damage the structure of rice. Through normal rice cooking operation for about 70 minutes, the cadmium content in rice can be automatically reduced by more than 60%, mercury and arsenic by more than 80%, and the removal rate of pesticide residues exceeds 90%! "This technology can not only remove a variety of harmful substances contained in rice at the same time, but also achieve targeted removal for the single heavy metal type (such as cadmium, arsenic, mercury, etc.) that is the main pollutant in the soil/water body of different regions." (Attached: Third-party test report on heavy metal cadmium content of the same rice, rice cooked by ordinary rice cooker, and rice cooked by the R&D technology test. The self-inspection report data of the enterprise's R&D test part, the comparison of color and odor changes of rice in the same environment, temperature and time). Ensure that every family and every bowl of rice is healthier and safer, bringing health protection to consumers. At present, there are no enterprises in the domestic and foreign household appliance markets that have developed and produced cooking household appliances that can remove harmful substances in rice during the normal rice cooking process.

Technical Background of Project R&D

Heavy metal contaminated land is the main pollution source for crop planting at present, among which cadmium, lead, mercury and arsenic are the main elements, as well as pesticide residues. Long-term consumption of grain contaminated by heavy metals and pesticide residues will bring hidden dangers to consumers' health and endanger the health of every consumer. At present, the technical solutions for removing heavy metals in rice include mechanical deep processing and solvent soaking. Mechanical deep processing has a very limited effect on reducing the heavy metal content of rice (the heavy metal content is reduced by about 5%), which causes great waste of grain and is not conducive to the national conditions. Solvent soaking (the heavy metal content is reduced by about 80%) requires grinding rice into rice flour, then acidifying and fermenting for about 5 hours, separating heavy metals through professional equipment and then extracting rice protein and starch. The operation is cumbersome, the cost is high, the waste is large, the starch recovery rate is 90%, and the processed starch cannot be used as staple food. At present, there is no household appliance manufacturing enterprise at home and abroad that has developed and produced cooking household appliances that can remove harmful substances in rice during the normal rice cooking process. The R&D and implementation of key technologies for controllable cooking extraction and degradation of heavy metals in rice (rice cooker that removes heavy metals and pesticide residues from rice) will better meet consumers' demand for their own health protection. During the daily rice cooking process, the heavy metal content in rice can be significantly reduced by more than 60% and pesticide residues can be removed, ensuring that every family and every bowl of rice is healthier and safer, bringing health protection to consumers. (Compared with the rice cooked by the same kind of rice and the ordinary traditional rice cooker, the rice cooked by the rice cooker that removes heavy metals and pesticide residues from rice has a whiter color, higher light transmittance, softer, looser and more elastic rice, can keep the color unchanged and is not easy to taste or deteriorate in the same environment, temperature and time).

Benefits and Advantages of Project R&D

Significantly reduce the heavy metal content in rice by more than 60%, eliminate pesticide residues, and bring health protection to consumers:

It has no effect on the taste and flavor of rice, and is suitable for daily consumption by any consumer:

No chemical substances are added, which has no adverse effect on human health:

It does not change the use of rice, does not damage the structure of rice, and does not affect the edibility of rice:

Low cost, simple operation, convenient, safe and reliable.

Technological Achievement Innovation, Market Value and Social Benefit

Technological Breakthrough

1. Comparison of domestic and foreign technologies:

Japan's "acid soaking method" (1987 patent JP-S62140599A): takes 5 hours to remove more than 80% of heavy metals (rice needs to be crushed before treatment).

Achievements of Hunan Grain and Oil Product Quality Monitoring Center (2023 patent CN202310381549.9): takes 3 hours to remove more than 40% of heavy metals.

2. Advantages and data parameters of this R&D technology:

I obtained the technical achievement in 2021, and applied for the Technology Innovation Competition to the State Grain and Reserves Administration in January 2022. It takes 70 minutes to remove multiple heavy metals at the same time: more than 60% of Cadmium (Cd), more than 80% of Mercury (Hg), more than 80% of Arsenic (As), and more than 90% of pesticide residues (keeping the rice grain structure complete and undamaged).

Market Value of Rice Cookware for Removing Heavy Metals from Rice

1. Market demand and potential

Driven by both environmental pollution and health awareness, the market of "new cookware for removing heavy metals from rice" shows strong growth potential. As the world's largest rice consumer, 90% of households in China use rice cookers as staple food cooking tools. The enrichment characteristics of rice for heavy metals such as mercury, lead, arsenic and cadmium make it an important threat to human health. There is still a significant technical gap in the current market. Traditional rice cookers can not only not eliminate heavy metals, but even the falling off of the inner tank coating may bring secondary pollution risks. Facing the increasingly strict food safety requirements around the world (such as the EU's limit standard for arsenic content in rice), the development of new cookware with heavy metal removal function has become a key direction for industrial upgrading.

2. Consumer demand analysis

Basic health needs: Experimental data shows that the new technology can reduce the cadmium content in rice from 0.47mg/kg to 0.16mg/kg, a decrease of more than 60%, and is also effective for arsenic, lead, mercury and pesticide residues. This technology is especially suitable for families in heavy metal polluted areas, providing additional protection for sensitive groups (infants, pregnant women, the elderly).