8results about How to "Increase selenium content" patented technology

The application provides a bacillus megaterium and application of the bacillus megaterium in preparation of nano selenium organic fertilizer for increasing selenium content of tea, and belongs to the technical field of microorganisms, wherein the bacillus megaterium NT2 is preserved in China Center for Type Culture Collection, and the preservation number is CCTCC NO:M 20251806; the bacillus megaterium NT2 has strong tolerance and reduction capacity to selenium elements, can survive in high-concentration inorganic selenium, and reduce the inorganic selenium into nano selenium, and has weak capacity to enrich arsenic, cadmium and lead; can be mixed with high-temperature calcination activated high-selenium rock powder to carry out mixed fermentation, to prepare a selenium source of nano selenium organic fertilizer, to increase the selenium content of tea while ensuring that the heavy metal content does not exceed the national standard. The bacillus megaterium provided by the application can reduce the toxicity of inorganic selenium in high-selenium rock and convert it into nano selenium, and can stably, safely and standardly produce selenium-rich tea, so that the heavy metal content of tea does not exceed the standard, and the application has a broad market prospect.

The application provides a preparation method of selenium-rich rice vermicelli and belongs to the technical field of food processing. The preparation method comprises the steps of rice pretreatment, selenium-rich rice bran pretreatment, raw material mixing, grinding, steamed powder extrusion, cooling and shaping, drying and packaging, and parameters of each step are optimized to ensure that process stability and product quality are improved simultaneously. Through the composite pretreatment process, the synergistic effect is realized, the selenium content of the finished product is greater than or equal to 0.5 mg / kg, the GI value is less than or equal to 55, the selenium bioavailability is greater than or equal to 65%, the breakage rate is 0%, the cooking loss is less than or equal to 6.7%, the rehydration rate is about 125%, the color is white and uniform, and no visible impurities are observed; the total drying time is shorter than that of the prior art, the method is suitable for industrial grinding production system, and the nutritional health, food quality and production efficiency are considered.

The invention provides a selenium-rich annona squamosa production method which comprises the following steps: S1, in an annona squamosa flower bud differentiation period, carrying out selenium solution irrigation treatment on annona squamosa trees for three times at an interval of about 30 days; s2, in the flowering and fruit-setting period of the annona squamosa, spraying a selenium solution to the annona squamosa tree twice at an interval of about 30 days; s3, synchronously implementing irrigation treatment in the step S1 and spraying treatment in the step S2 on the annona squamosa trees. The selenium content of the produced annona squamosa fruits is remarkably increased, the functional value of the selenium element is added on the basis that original nutrition is reserved, the annona squamosa fruits are transformed into special functional fruits, the oxidation resistance of the fruits is improved to different degrees, and the comprehensive quality is improved.

The application discloses a CsPHT1;3 gene for modifying tea absorption of selenium elements and application thereof in feed, relates to the field of agricultural genetic engineering, and discloses that the CsPHT1;3 gene is a gene mutation of D144K and T150V on GenBank:OP219455.1, and the amino acid sequence after the mutation is shown as SEQ ID No:01; the tea tree CsPHT1;3 gene improves the D144K and T150V gene mutation seedlings, the new variety cultivated by the application can improve the selenium content and antioxidant capacity of selenized tea polysaccharide without being affected by the change of pH 5-7; the high-selenium tea leaves are mixed with the feed to obtain selenium-supplemented feed, and the demand of the present high-end feed market is met.

This invention discloses the production technology and usage method of high-selenium-enriched rice, including the following steps: screening and determining high-selenium-enriched rice varieties; fertilizer formulation and application for selenium-enriched rice cultivation; determining the key period for selenium supplementation in rice; selecting the time for selenium supplementation operations; application of organic selenium-rich plant nutrients and control of selenium supplementation frequency; harvesting and processing high-selenium-enriched rice; determining the graded consumption amount of selenium-enriched rice for healthy individuals; implementing a phased consumption plan for selenium-enriched rice for sub-healthy individuals; and implementing personalized consumption and supplementary selenium supplementation plans for individuals with special conditions. This invention integrates two core modules: standardized production technology for high-selenium-enriched rice and graded personalized consumption methods, forming a systematic solution for the entire process from planting to consumption. It breaks through the industry bottleneck of the existing disconnect between selenium-enriched rice production and consumption, and improves the effectiveness and scientific nature of selenium supplementation through selenium-enriched rice.

The application discloses a bamboo shoot yield-increasing additive and a preparation method thereof, and belongs to the technical field of bamboo shoot cultivation, and comprises bitter bamboo sawdust, chitosan nano selenium, corn starch, ethanol, pectin, calcium chloride, enzyme, mannose and aloe-emodin. The prepared bamboo shoot yield-increasing additive is mixed with soil to serve as a cultivation substrate for cultivating bamboo shoots, so that the growth of the bamboo shoots can be better promoted, the growth cycle of the bamboo shoots can be shortened, the yield of the bamboo shoots can be improved, and finally, the cultivated bamboo shoots have good yield and selenium content.

The invention discloses a planting method for improving the selenium content of tartary buckwheat grains, and particularly relates to the field of agricultural planting, the method comprises the following steps: selecting a tartary buckwheat variety in a tartary buckwheat main producing area; determining a proper selenium application period; setting a selenium source and selenium application amount; leaf surface spraying is conducted on plant leaves; and after the tartary buckwheat seeds are mature, determining the selenium content of the seeds by using a hydride atomic fluorescence spectrometry. On the premise of ensuring food safety, the selenium content of the tartary buckwheat grains is increased, and the yield is considered.

This invention belongs to the field of animal husbandry and deep processing of agricultural products, specifically relating to a method and its application for cultivating low-cadmium, selenium-rich mealworms using cadmium-containing feed. Specifically, this invention involves adding a low concentration of selenium to a cadmium-containing bran and rice bran feed to raise 3rd-4th instar mealworms. In the later stages of rearing, the mealworms are transferred to a selenium-only feed for cadmium removal, ensuring that the cadmium content in the mealworms does not exceed relevant standards and achieving the goal of efficiently treating cadmium-containing agricultural waste and obtaining low-cadmium, selenium-rich mealworm products. Finally, lipids in the mealworm powder are extracted in one step using low-boiling-point petroleum ether to obtain low-cadmium, selenium-rich mealworm protein powder. In summary, this invention is simple, low-cost, and can efficiently process cadmium-containing materials while simultaneously yielding low-cadmium, selenium-rich, high-quality mealworm products and mealworm protein powder, without affecting mealworm yield. It achieves multiple benefits and has good practical application value.