نتایج جستجو برای: hydroxymethylfurfural

تعداد نتایج: 979  

Journal: :Eastern-European Journal of Enterprise Technologies 2021

Obtaining such substances-platforms as, in particular, 5-hydroxymethylfurfural is one of the areas most actively investigated at present. They can act as raw materials for further production a new generation biopolymers, fuels, pharmaceuticals, dietary supplements, and other chemicals. This paper reports catalysts, synthesized by using methods ion exchange impregnation, based on large-pore zeol...

Journal: :Renewable & Sustainable Energy Reviews 2021

5-hydroxymethyfurfural is an important platform chemical, which can be produced by hydrothermal conversion of chitin biomass. 5-Hydroxymethyfurfural converted into value-added chemicals and liquid fuels. Thus, the utilization biomass will help consume crustacean waste reduce environmental problems caused overuse fossil resources. This review summarizes recent process in production from solvent-...

Journal: :Food chemistry 2011
Erika Teixidó Oscar Núñez F Javier Santos M Teresa Galceran

Micellar electrokinetic chromatography (MEKC) has been applied for the determination of 5-hydroxymethylfurfural in several foodstuffs. A 75mM phosphate buffer solution at pH 8.0 containing 100mM sodium dodecylsulphate was used as background electrolyte (BGE), and the separation was performed by applying +25kV in a 50μm I.D. uncoated fused-silica capillary. Good linearity over the range 2.5-250m...

2016
Chaochao Yue Guanna Li Evgeny A. Pidko Jan J. Wiesfeld Marcello Rigutto Emiel J. M. Hensen

Dehydration of glucose to 5-hydroxymethylfurfural (HMF) remains a significant problem in the context of the valorization of lignocellulosic biomass. Hydrolysis of WCl6 and NbCl5 leads to precipitation of Nb-containing tungstite (WO3 ⋅H2 O) at low Nb content and mixtures of tungstite and niobic acid at higher Nb content. Tungstite is a promising catalyst for the dehydration of glucose to HMF. Co...

2011
Lipika Basumallick Deanna Hurum

Common biomass sugars and hydroxymethylfurfural (HMF) are routinely analyzed during biofuel processing. Sugars are monitored for optimizing processes to maximize the yield of ethanol. HMF, a byproduct of processing, is quantified because it can have an inhibitory effect on ethanol yield. Additionally, there is a growing interest in HMF as a platform compound that can be used to synthesize sever...

Journal: :Molecular nutrition & food research 2011
Klaus Abraham Rainer Gürtler Katharina Berg Gerhard Heinemeyer Alfonso Lampen Klaus E Appel

5-Hydroxymethylfurfural (5-HMF) as a product of the Maillard reaction is found in many foods. Estimated intakes range between 4 and 30  mg per person and day, while an intake of up to 350  mg can result from, e.g., beverages made from dried plums. In vitro genotoxicity was positive when the metabolic preconditions for the formation of the reactive metabolite 5-sulphoxymethylfurfural were met. H...

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