نتایج جستجو برای: hydroxymethyl furfural

تعداد نتایج: 5184  

2012
Bailiu Ya Lan Zhang Li Zhang Yali Li Lin Li

In the present study, we hypothesized that 5-hydroxymethyl-2-furfural could attenuate ischemic brain damage by reducing oxidative injury. Thus, mice were subjected to bilateral common carotid artery occlusion to establish a model of permanent forebrain ischemia. The mice were intraperitoneally injected with 5-hydroxymethyl-2-furfural 30 minutes before ischemia or 5 minutes after ischemia. The s...

Journal: :Catalysis Science & Technology 2021

Chemoselective hydrogenation of 5-(hydroxymethyl)furfural (HMF) to 2,5-bis(hydroxymethyl)furan (BHMF) has been efficiently performed using bimetallic CuFe nanoparticles covered by thin carbon layers as catalysts.

Journal: :nutrition and food sciences research 0
hossein habibi national nutrition and food technology research institute, shahid beheshti university of medical sciences, tehran, iran abdorreza mohammadi national nutrition and food technology research institute, shahid beheshti university of medical sciences, tehran, iran marzieh kamankesh department of chemistry, faculty of science, iran university of science and technology, tehran, iran

background and objectives: furfural (f) and hydroxymethyl furfural (hmf) are cyclic aldehydes, which are formed during the heat processing of foods. these chemical contaminants have received much attention due to their suspected health hazards and heat damage indicators. the aim of the present study was extraction and determination of f and hmf in baby-foods using dispersive liquid-liquid micro...

1997
J. Quesada Granados M. Villalón

Appropriate statistical techniques were used to study the influence of different aging conditions on the furanic aldehyde contents of a number of brandies. Some of these conditions (presence or absence of caramel, wood type, state of the barrel, length of maturation) affected the concentrations of furfural and 5-(hydroxymethyl)furfural in the distillate, and these compounds cannot therefore be ...

Background and Objectives: Furfural (F) and hydroxymethyl furfural (HMF) are cyclic aldehydes, which are formed during the heat processing of foods. These chemical contaminants have received much attention due to their suspected health hazards and heat damage indicators. The aim of the present study was extraction and determination of F and HMF in baby-foods using dispersive liquid-liquid micro...

2017
Michael T. Guarnieri Mary Ann Franden Christopher W. Johnson Gregg T. Beckham

The sugar dehydration products, furfural and 5-(hydroxymethyl)furfural (HMF), are commonly formed during high-temperature processing of lignocellulose, most often in thermochemical pretreatment, liquefaction, or pyrolysis. Typically, these two aldehydes are considered major inhibitors in microbial conversion processes. Many microbes can convert these compounds to their less toxic, dead-end alco...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Frank Koopman Nick Wierckx Johannes H de Winde Harald J Ruijssenaars

The toxic fermentation inhibitors in lignocellulosic hydrolysates pose significant problems for the production of second-generation biofuels and biochemicals. Among these inhibitors, 5-(hydroxymethyl)furfural (HMF) and furfural are specifically notorious. In this study, we describe the complete molecular identification and characterization of the pathway by which Cupriavidus basilensis HMF14 me...

Journal: :nutrition and food sciences research 0
maryam jalili sri, karaj, iran farzaneh ansari sri, karaj, iran

5-hydroxymethylfurfural (5-hmf) is known as an indicator of quality deterioration in a wide range of foods. the current study covered 70 samples taken from domestically produced foods and drinks available on the iranian markets (including honey, jam, fruit cakes tomato paste, ketchup, syrup, fruit juice, canned fruit, uht milk, instant coffee and jelly powder). hmf levels were determined using ...

2007
Jian-Ping Yuan Feng Chen

An HPLC method was developed for the simultaneous separation and identification of furanic compounds as the possible degradation products of sugars and ascorbic acid on heating. 5-(Hydroxymethyl)furfural (5-HMF), furfural, 2-furoic acid, 2,5-dimethyl-4-hydroxy-3(2H)-furanone (DMHF), 2-acetylfuran, and six unknown compounds were separated and detected in fruit juice concentrates with or without ...

Journal: :Quality Assurance and Safety of Crops & Foods 2022

The heat treatment process usually affects the quality and safety of milk could produce different compounds, including furosine furfurals. To help evaluate effect heating temperatures on furfurals, a method based gas chromatography-mass spectrometry (GC-MS) combined with QuEChERS (quick, easy, cheap, effective, rugged, safe) extraction technology was used to detect four furfural furfural, 2-ace...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید