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161 results about "Cereal product" patented technology

Method for testing formaldehyde in food by means of derivation extraction

The invention relates to a method for testing the content of formaldehyde in food by means of liquid chromatography, in particular to a method for testing the formaldehyde in import and export aquatic products, vegetables (including mushroom), cereal products, dairy products and beers, etc. The method for testing the content of the formaldehyde in the food by means of liquid chromatography comprises the steps of: (1) extracting; (2) purifying; (3) preparing formaldehyde standard work solution; (4) testing; (5) blank testing; and (6) computing and expressing a result. The method adopts acetonitrile / pH 5 ethylic acid buffer solution (1 / 1, v / v) of 2, 4-dinitrophenylhydrazine to directly derive and extract the formaldehyde in a sample and test by means of the liquid chromatography. The formaldehyde is extracted from the sample under water bath at the temperature of 60 DEG C and the derivatization reaction is performed. The 2, 4-dinitrophenylhydrazine and the group in protein compete for the formaldehyde in the reaction solution, thereby being capable of effectively preventing the formaldehyde from combining with the protein in the sample and having higher formaldehyde recovery ratio than that of by using an immersion method.
Owner:THE INSPECTION & QUARANTINE TECH CENT ZHEJIANG ENTRY EXIT INSPECTION & QUARANTINE BUREAU

Method for processing cereal potato powder into rice grain products by using konjak flavor powder to prevent starch gelatinization

The invention relates to a method for processing cereal potato powder into rice grain products by using konjak flavor powder to prevent starch gelatinization, in particular to a processing method for cereal products. In the method, the cereal potato powder is used as a major ingredient which consists of one or more of cereal powder or/and potato powder; and special-grade konjak flavor powder is used as a critical ingredient, wherein the used amount of the special-grade konjak flavor powder accounts for 1 to 10 percent of the total amount of raw materials, and the water consumption accounts for 18 to 30 percent of the total weight of the raw materials. The method comprises the following steps of: preparing the special-grade konjak flavor powder, the cereal potato powder raw materials and the water respectively according to a ratio; dissolving the special-grade konjak flavor powder in hot water at the temperature of between 55 and 60 DEG C to prepare serous fluid; mixing and stirring the serious fluid and the cereal potato powder fully to form uniform dough wet grains, and curing; processing the cured materials in the same direction at different speeds by adopting a double screw extruder, and wrapping by glucomannan serving as a special-grade konjak flavor powder aid, so that the gelatinization degree of cereal potato starch is limited within the range of between 75 and 78 percent effectively, and forming strip colloid to be extruded; and cutting the colloid to form the rice grain products with full grains.
Owner:湖北富程魔芋产业发展有限公司
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