38results about How to "Improve extraction rate" patented technology

The invention discloses an interlayer conical cover dispersing component and a method for dispersing liquid phase. The dispersing component comprises an outer-layer conical cover and an inner-layer conical cover which have the same center shaft; an interlayer gap is formed between the conical cover and the conical pipe; the lower end of the gap is connected by a horizontal ring-shaped bottom plateand is sealed; the vertical section of the outer-layer conical cover is shaped like an isosceles triangle or an isosceles trapezoid; multiple rows of sieve pores are formed in the side wall of the outer-layer conical cover along different height, and the outer-layer conical cover has a fan-shaped sieve plate structure when being unfolded; the upper end and the lower end of the inner-layer conicalpipe are open to form liquid flow hole channels, and the height of the inner-layer conical pipe is less than that of the outer-layer conical cover; when the vertical section of the outer-layer conical cover is shaped like the isosceles trapezoid, the outer part of outer-layer conical cover is closed by a round top plate; and at least one sieve pore is formed in the round top plate. The interlayerconical cover dispersing component has the advantages of high operation flexibility, high mass transfer efficiency, stable and reliable extraction process and the like.

The invention relates to a method for extracting microcapsule slow-release pungent litse fruit essential oil capable of being applied to fresh keeping of meat products. The crushing particle size of dried pungent litse fruits is 40 meshes, the one-time feeding amount is 800 g, and the optimal technological parameters of supercritical CO2 extraction are as follows: the extraction pressure is 26 MPa, the extraction temperature is 46 DEG C, the extraction time is 148 min, and the extraction yield of the essential oil is up to 38.65%. Through analysis of physical and chemical indexes of the essential oil, it is found that the color L* value is 41.10, the a* value is 16.17, the b* value is 21.43, the relative density is 0.924, the saponification value is 195.29 mgKOH/g, the refractive index is 1.473, the peroxide value is 0.14 g/100 g, the acid value is 2.31 mgKOH/g, and all the indexes meet the requirements of the national standard. The optimal technological parameters for embedding the pungent litse fruit essential oil microcapsule are as follows: the ratio of a composite wall material is 1:1 (g/g), the ratio of a core material to a wall material is 1:5 (g/g), the solid content is 15%, the content of an emulsifier is 3%, the ratio of an emulsifier is 1:4 (g/g), the emulsification temperature is 40-50 DEG C, and the embedding rate of the pungent litse fruit essential oil microcapsule prepared under the conditions can reach 84.68%. The water content, the solubility and the bulk density are 3.05%, 91.04% and 0.35 g/cm<3> respectively.

The invention discloses a preparation method for separating and extracting a new compound from an A. terreus secondary metabolite. The method comprises the steps of spore preparation, strain fermentation, extraction on the secondary metabolite, and separation and purification, specifically, an epigenetic modifying regulator TSA, nicotinamide and dipeptide are added into a fungal culture medium, fermentation culture is carried out, a fermentation broth and mycelia are subjected to separate extraction, and a fermentation concentrate is separated and purified by column chromatography and high performance liquid chromatography to obtain the separated and extracted new compound. The beneficial effects are as follows: the nicotinamide and dipeptide are added into the culture medium and produce asynergistic gain effect with the epigenetic modifying regulator TSA, and epigenetic modification is performed on A. terreus OUCMDZ-2739 to effectively activate the expression of the silencing gene ofthe strain, and obtain a new secondary metabolite through separation; the novel compound prepared by the invention has a good anti-tumor effect.