38results about How to "Reduce pollution and other issues" patented technology

A kind of natural concentrated dietary fiber and preparation method thereof, described natural concentrated dietary fiber is that the pine bark that is rich in dietary fiber is crushed and sieved, soaked in water, drains waste water after soaking, and then transfers the soaked pine bark To the reactor, add water to obtain the pine bark mixed liquid, carry out ultrasonic-assisted enzymolysis treatment, drain the liquid after enzymolysis, then insert the enzymolysis material into Lactobacillus plantarum HKB‑38 for fermentation, and ferment the fermented The material is subjected to high temperature and high pressure heat treatment, cooled and dried to obtain natural concentrated dietary fiber. The invention also includes a preparation method of natural concentrated dietary fiber. The invention selects pine bark with low price and abundant resources as the production raw material, greatly reduces the production cost, makes full use of resources and creates high added value. The invention significantly improves the purity of the dietary fiber and the swelling and water holding capacity of the fiber product. Experiments have proved that in the concentrated dietary fiber of the present invention, the crude fiber content is ≥ 60%, the neutral detergent fiber (NDF) content is ≥ 86%, the acid detergent fiber (ADF) content is ≥ 70%, the product swelling property is ≥ 5.0mL / g, and the water holding capacity ≥5.0g / g.

The invention discloses a method for extracting lignin by using a ternary deep eutectic solvent. The method comprises the steps of: mixing and reacting the raw material with a ternary deep eutectic solvent, cooling to room temperature after the reaction is completed, and obtaining a reaction product, adding the reaction product to absolute ethanol and stirring, washing with ethanol, filtering, concentrating, adding water, and standing , to obtain a precipitate containing lignin, filter, and dry to obtain lignin. The present invention provides a method for extracting lignin from straw by using a ternary deep eutectic solvent, which improves the extraction efficiency of lignin more effectively compared with a binary deep eutectic solvent, and achieves the maximum extraction efficiency within 4 hours The lignin purity is 84±1%, and the purity of the obtained lignin is relatively high, with the highest purity reaching 83%. The deep eutectic solvent and absolute ethanol can be recycled and reused during the extraction process. Problems such as pretreatment cost and environmental pollution are in line with the concept of green and environmental protection development.