5-(Hydroxymethyl)-2-furaldehyd Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R52/53:Sch?dlich für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
S-S?tze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Beschreibung
5-Hydroxymethylfurfural (5-HMF) derived from sugars is the link between biomass and furan-based chemicals. With its various functional groups and associated reaction sites, this small molecule opens the door to a wide range of chemical modifications, which makes 5-HMF a versatile renewable building block.
5-HMF is widely spread in food products and is formed in sugar containing food when exposed to heat. It is widely used as an indicator of quality in food products. It is also employed to indicate the adulteration of food products with acid converted invert syrups.
Chemische Eigenschaften
Beige Coloured Crystalline Solid.
Among the organic compounds that can be obtained from biomass, 5-Hydroxymethylfurfural (5-HMF) is one of the most interesting ones. 5-HMF is an organic compound derived from dehydration of certain sugars (hexoses). This yellow, low-melting solid is highly water-soluble. The molecule consists of a furan ring, containing both aldehyde and alcohol functional groups. HMF as natural substance has been identified in a wide variety of heat-processed foods including milk, fruit juices, spirits, honey, etc. HMF, which is derived from cellulose, is a potential "carbon-neutral" feedstock for a number of chemical substances.
Verwenden
An antioxidant for grape and apple juice.
Definition
ChEBI: 5-hydroxymethylfurfural is a member of the class of furans that is furan which is substituted at positions 2 and 5 by formyl and hydroxymethyl substituents, respectively. Virtually absent from fresh foods, it is naturally generated in sugar-containing foods during storage, and especially by drying or cooking. It is the causative component in honey that affects the presystemic metabolism and pharmacokinetics of GZ in-vivo. It has a role as an indicator and a Maillard reaction product. It is a member of furans, an arenecarbaldehyde and a primary alcohol.
synthetische
5-Hydroxymethylfurfural (HMF) was synthesized from glucose in a slug flow capillary microreactor, using a combination of AlCl3 and HCl as the homogeneous catalyst in the aqueous phase and methyl isobutyl ketone as the organic phase for in-situ HMF extraction.
Continuous synthesis of 5-hydroxymethylfurfural from glucose using a combination of AlCl3 and HCl as catalyst in a biphasic slug flow capillary microreactor
Application
5-Hydroxymethylfurfural has been used as a standard in the high performance liquid chromatographic (HPLC) analysis for the determination of 5-(hydroxymethyl)furfural content in co-hydrolysates and fermentation broth of lignocellulosic biomass for the lipid accumulation in M. isabellina type of microorganisms. 5-(Hydroxymethyl)furfural may be used as an analytical reference standard for the quantification of the analyte in vinegar and fruit juice samples using chromatography techniques.
5-Hydroxymethylfurfural has been used as standard in the high performance liquid chromatographic (HPLC) analysis for the determination of 5-(hydroxymethyl)furfural content in co-hydrolysates and fermentation broth of lignocellulosic biomass for the lipid accumulation in M. isabellina type of microorganisms.
Allgemeine Beschreibung
5-(Hydroxymethyl)furfural is an organic compound, widely spread in food products and is formed in sugar containing food when exposed to heat. It is widely used as an indicator of quality in food products. It is also employed to indicate the adulteration of food products with acid converted invert syrups.
Biologische Aktivit?t
5-Hydroxymethylfurfural is a furanic compound derived from the degradation of sugars. It can be derived from reducing sugars via acid-catalyzed degradation or the Maillard reaction during the heating and storage of foods. 5-Hydroxymethylfurfural is an intermediate in the synthesis of a variety of compounds including 2,5-diformylfuran (DFF), 2,5-furandicarboxylic acid (FDA), 2,5-bis(hydroxymethyl)furan (5-(hydroxymethyl)furfuryl alcohol; Item No. 20658), and dimethylfuran (DMF), among others. 5-Hydroxymethylfurfural has been found in the marine algae L. undulata and scavenges 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl, alkyl, and superoxide radicals in cell-free assays (IC50s = 27.1, 22.8, 45, and 33.5 μM, respectively).
Sicherheitsprofil
Questionable carcinogen with experimental tumorigenic data.Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALDEHYDES
Stoffwechselwegen
When 5-hydroxymethyl-2-furaldehyde (HMF) is
administered orally or intravenously to rats, HMF or its
metabolites are rapidly eliminated in the urine with the
recovery of 95 ? 100% after 24 h. HMF is completely
converted to two metabolites which are identified as 5-
hydroxymethyl-2-furoic acid and N-(5-hydroxymethyl-2-
furoyl)glycine.
l?uterung methode
Crystallise it from diethyl ether/pet ether. [Beilstein 18 III/IV 100, 18/1 V 130.]
5-(Hydroxymethyl)-2-furaldehyd Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
