3results about How to "Increase hydrolysis rate" patented technology

The application relates to the field of food biotechnology, and discloses a low-salt bean paste production process based on segmented temperature control fermentation, which is made of fava bean koji, water, edible salt, sodium hexametaphosphate, lactococcus lactis nisin, edible alcohol, granulated coarse granular calcium carbonate and glucono-delta-lactone. The production process comprises the following steps: constructing a composite matrix, and first performing buffer-type medium-temperature enzymolysis; then adding a glucono-delta-lactone aqueous solution in a flow manner, utilizing the stoichiometric coupling reaction of the glucono-delta-lactone aqueous solution and the granulated coarse granular calcium carbonate to generate carbon dioxide in situ to construct a micropore structure and regulate the pH value of the system; and finally, connecting a Zygosaccharomyces rouxii to perform low-temperature aroma-producing after-ripening. Through the synergistic effect of the components, the application effectively solves technical problems in the low-salt fermentation process, such as low protein solubility, easy compaction of the matrix and breeding of miscellaneous bacteria, and improves the amino acid nitrogen content and protein hydrolysis rate of the finished product.

The application provides a titanium dioxide type low-temperature hydrogenolysis catalyst and a preparation method and application thereof. The catalyst comprises a titanium dioxide carrier and an active component loaded on the titanium dioxide carrier, and the active component comprises scandium oxide and tungsten oxide. The preparation method of the catalyst comprises the following steps: dipping the titanium dioxide carrier in a mixed solution of scandium salt and tungsten salt for a period of time, so that the scandium salt and the tungsten salt are loaded on the titanium dioxide carrier; and then drying and calcining the titanium dioxide carrier loaded with the scandium salt and the tungsten salt, to obtain the titanium dioxide type low-temperature hydrogenolysis catalyst. The catalyst has good sulfur dioxide hydrogenation activity and organic sulfur hydrolysis activity, and can be applied to a process for treating sulfur recovery tail gas at a low temperature of 210-220 DEG C.

This invention discloses a method for preparing fatty acids from acidified oil, belonging to the field of biochemical engineering. The method includes preparing an immobilized lipase and enzymatic hydrolysis; the preparation of the immobilized lipase includes preparing a carrier and immobilization; the preparation of the carrier involves placing magnetic Fe... 3 O 4 The granules, anhydrous ethanol, deionized water, and ammonia were mixed, stirred at room temperature, and ultrasonically vibrated. Then, they were mixed with tetraethyl orthosilicate, stirred at room temperature, collected by magnetic decantation, and washed to obtain Fe. 3 O 4 @SiO 2­ Particles; Fe 3 O 4 @SiO 2­ Granules, hexadecyltrimethylammonium bromide, and deionized water are mixed and stirred. Calcium nitrate tetrahydrate is added and stirred. The pH value is adjusted to 9.5-10. Diammonium hydrogen phosphate aqueous solution is added dropwise and the pH value is stabilized at 9.5-10. The mixture is stirred and collected by magnetic decantation. The method of this invention can simultaneously achieve high hydrolysis rate and good reusability, and the hydrolysis rate is less affected by the acid value of acidified oil.