2results about How to "Improve extraction yield" patented technology

The present invention relates to a process for the production of 5-hydroxymethylfurfural (5-HMF) comprising, in order: a) contacting a sugar feedstock with a polar aprotic synthesis solvent and an acidic dehydration catalyst at a temperature of 30-200 DEG C and a pressure of 0.001-10 MPa to produce a synthesis effluent comprising 5-HMF; b) concentrating the 5-HMF in the synthetic effluent; c) contacting the concentrated synthetic effluent with an aqueous stream; d) liquid-liquid extraction with an organic extraction solvent, followed by step e) backwashing with an aqueous solvent to obtain an organic raffinate rich in 5-HMF and solvent. The optionally concentrated organic raffinate is then subjected to a purification step g), for example water distillation or crystallization, to obtain a 5-HMF stream, for example in the form of an aqueous 5-HMF solution or crystalline 5-HMF.

This utility model relates to pectin extraction using ohmic heating technology and automated control technology, belonging to the field of food processing and automation control. Specifically, it is a pectin extraction device based on ohmic heating, which includes a reaction device, a storage and collection device, a pipeline conveying device, auxiliary devices such as pressure gauges and coolers, as well as software programs and hardware circuits. This utility model has a compact structure and simple operation. Through the rational design of the reaction vessel, ohmic heating technology can be applied and the stirring requirements of the processing can be met, realizing the automation of the pectin extraction process. It can precisely control the heating rate and temperature during the pectin extraction process, and can uniformly heat the material in a shorter time, achieving low energy consumption, high efficiency, intelligence, and green energy saving.