Cellular agriculture - industrial biotechnology for food and materials.

The invention relates to a full-membrane method seawater desalting integration system adopting ultrafiltration-nanofiltration-reverse osmosis, and a full-membrane method seawater desalting integration process adopting ultrafiltration-nanofiltration-reverse osmosis, wherein the nanofiltration seawater softening recovery rate can be increased, and the membrane surface scaling tendency can be reduced. According to the present invention, the nanofiltration system is a three-stage nanofiltration system, wherein the first-stage nanofiltration membrane assembly and the second-stage nanofiltration membrane assembly are adopted as the pretreatment of the reverse osmosis, and the third-stage nanofiltration membrane assembly further treats the concentrated water obtained through the first-stage nanofiltration and the second-stage nanofiltration, such that the seawater recovery rate is increased, and the scaling tendency on the nanofiltration membrane surface of the first-stage nanofiltration membrane assembly and the second-stage nanofiltration membrane assembly is reduced so as to reduce the seawater desalting cost and reduce the scaling tendency of the third-stage nanofiltration membrane assembly during the high salinity concentrated water treatment.

Full-membrane method seawater desalting integration system adopting ultrafiltration-nanofiltration-reverse osmosis, and full-membrane method seawater desalting integration process adopting ultrafiltration-nanofiltration-reverse osmosis

The invention discloses a method of simultaneously extracting caffeic acid and ferulic acid in cimicifuga rhizome The method comprises the following steps: firstly, weighing according to certain ratio and dissolving ferulic acid, caffeic acid and zinc acetate in an acetonitrile-dimethyl sulfoxide mixed solution, vibrating, adding a functional monomer 4-VP, sufficiently vibrating, then adding a mixed cross-linking agent EDMA-DVB and an initiator AIBN, sufficiently mixing the raw materials, transferring the raw materials into a round-bottom flask, degassing, feeding argon, and sealing the bottle; secondly, laying the bottle into a 60 DEG C thermostat water bath, performing crushing after the completion of a polymerization reaction, and performing sieving, settling, filtering, eluting and vacuum drying; thirdly, loading an obtained molecularly imprinted polymer into a solid-phase extraction tube, and performing washing and eluting after the loading The method adopts a metal ion coordination imprinting technology, takes a binary compound metal ion complex as template molecules, synthesizes the molecularly imprinted polymer with high selective recognition property, and has high practical value by simultaneously extracting the caffeic acid and the ferulic acid in the cimicifuga rhizome through the molecularly imprinted polymer

Method of simultaneously extracting caffeic acid and ferulic acid in cimicifuga rhizome

A process for a reactive separation of organic molecules from biomass includes a reaction step for the biomass, a simultaneous extraction step using a solvent, and a filtration step to recover products, wherein the products comprise ferulic acid and/or coumaric acid. The products are extracted from the biomass in a pressurized stirred batch reactor using a liquid extraction solvent and a base in which the ferulate and the coumarate remain.

Extraction of natural ferulate and coumarate from biomass

The invention discloses a method for preparing ferulic acid, and belongs to the field of plant extraction. The preparation method of the ferulic acid comprises the following steps: extracting cellulosic materials which are used as raw materials to obtain a solution containing the ferulic acid, performing concentration, then performing extraction with an organic solvent, then performing an esterification reaction, treating an esterification product by a distillation method, then performing ester hydrolysis, performing concentration and crystallization, and performing recrystallization to obtain high-purity ferulic acid. The method disclosed by the invention has the following advantages: the cellulosic raw materials are not pretreated at all, the cost is reduced, and the bottleneck of interference caused by impurities to purification of the ferulic acid during alkaline hydrolysis is broken through, so that the ferulic acid of which the purity reaches 98% or above is obtained. In the whole process, the dosage of the solvent is significantly reduced, all the used solvent is recycled, the cost and pollution are reduced, the technological process is simple, the production cost is low, and the efficiency is high, so that the method has better industrial advantages.

Method for preparing ferulic acid

A process for extraction of ferulic acid present in an aqueous phase, obtained by treatment of at least one plant material, and also containing polysaccharides, is described, said process comprising at least the following steps: 1) the treatment of said plant material followed by a solid/liquid separation to recover a solid phase and an aqueous liquid phase comprising the ferulic acid and said polysaccharides, 2) the treatment of said liquid phase to selectively separate, on the one hand, the polysaccharides and, on the other hand, the ferulic acid present in an aqueous fraction, 3) the concentration of said aqueous fraction containing the ferulic acid so as to recover a ferulic acid-concentrated stream, 4) the recovery of the ferulic acid in solid form.

Optimized process for extraction of ferulic acid with pretreatment

On decrit un procede d'extraction d'acide ferulique present dans une phase aqueuse, obtenue par traitement d'au moins une matiere vegetale, et contenant egalement des polysaccharides, ledit procede comprenant au moins les etapes suivantes : 1) le traitement de ladite matiere vegetale suivi d'une separation solide/liquide pour recuperer une phase solide et une phase liquide aqueuse comprenant l'acide ferulique et lesdits polysaccharides, 2) le traitement de ladite phase liquide pour separer selectivement les polysaccharides d'une part et l'acide ferulique present dans une fraction aqueuse d'autre part, 3) la concentration de ladite fraction aqueuse contenant l'acide ferulique pour recuperer un flux concentre en acide ferulique, 4) la recuperation sous forme solide de l'acide ferulique.

Procede optimise d'extraction d'acide ferulique avec pretraitement

The present invention relates to a new process of vanillin production from a substrate by bioconversion and that allows a continuously producing and removing vanillin from the fermentation broth as it is formed. In particular, the invented process advantageously allows to reduce the residence time of vanillin in the fermenter and to maintain the vanillin concentration, in the fermentation broth, below its toxic level for the microorganism.

Stéphanie Foucher

Papers

Optimized process for extraction of ferulic acid with pretreatment

Procede optimise d'extraction d'acide ferulique avec pretraitement

Improved production of vanillin by fermentation

Production of vanillin by fermentation