Showing 1-30 of 31 resultados for "04623"
Furfural.
IARC monographs on the evaluation of carcinogenic risks to humans, 63, 409-429 (1995-01-01)
F Monlau et al.
Bioresource technology, 187, 379-386 (2015-04-13)
The robust supramolecular structure of biomass often requires severe pretreatments conditions to produce soluble sugars. Nonetheless, these processes generate some inhibitory compounds (i.e. furans compounds and aliphatic acids) deriving mainly from sugars degradation. To avoid the inhibition of the biological...
Reetta Karinen et al.
ChemSusChem, 4(8), 1002-1016 (2011-07-06)
Furfurals are important intermediates in the chemical industry. They are typically produced by homogeneous catalysis in aqueous solutions. However, heterogeneously catalyzed processes would be beneficial in view of the principles of green chemistry: the elimination of homogeneous mineral acids makes...
Sofia Tallarico et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 250, 119367-119367 (2021-01-06)
Chemocatalytic conversion of cellulose into lactic acid is a valuable alternative to simple sugar fermentation. Nevertheless, the procedures still need optimization to be translated to the industrial scale. Such translation would benefit by on-line monitoring of reaction parameters by fast...
Danielle Szczerbowski et al.
Carbohydrate polymers, 114, 95-101 (2014-09-30)
Two fractions of sugarcane, namely bagasse and straw (or trash), were characterized in relation to their chemical composition. Bagasse presented values of glucans, hemicelluloses, lignin and ash of 37.74, 27.23, 20.57 and 6.53%, respectively, while straw had 33.77, 27.38, 21.28...
Rosa Perestrelo et al.
Journal of chromatography. A, 1381, 54-63 (2015-01-27)
An improved, reliable and powerful analytical strategy based on digitally controlled microextraction by packed sorbent (MEPS) combined with ultrahigh pressure liquid chromatography (UHPLC) was validated for the simultaneous identification and quantification of major furanic derivatives, namely 5-hydroxymethyl-2-furaldehyde (5HMF), 5-methyl-2-furaldehyde (5MF)...
Johan O Westman et al.
Applied and environmental microbiology, 80(22), 6908-6918 (2014-08-31)
Yeast has long been considered the microorganism of choice for second-generation bioethanol production due to its fermentative capacity and ethanol tolerance. However, tolerance toward inhibitors derived from lignocellulosic materials is still an issue. Flocculating yeast strains often perform relatively well...
Abdul Azis Ariffin et al.
Food chemistry, 154, 102-107 (2014-02-13)
For the first time 5-hydroxymethyl-2-furaldehyde (HMF) was separated from crude palm oil (CPO), and its authenticity was determined using an RP-HPLC method. Separation was accomplished with isocratic elution of a mobile phase comprising water and methanol (92:8 v/v) on a...
Yu Shen et al.
Journal of industrial microbiology & biotechnology, 41(11), 1637-1645 (2014-09-30)
The phenolic compounds present in hydrolysates pose significant challenges for the sustainable lignocellulosic materials refining industry. Three Saccharomyces cerevisiae strains with high tolerance to lignocellulose hydrolysate were obtained through ethyl methanesulfonate mutation and adaptive evolution. Among them, strain EMV-8 exhibits...
Victor Ujor et al.
Applied microbiology and biotechnology, 99(8), 3729-3740 (2015-02-19)
In addition to glucans, xylans, and arabinans, lignocellulosic biomass hydrolysates contain significant levels of nonsugar components that are toxic to the microbes that are typically used to convert biomass to biofuels and chemicals. To enhance the tolerance of acetone-butanol-ethanol (ABE)-generating...
Jan Hintzpeter et al.
FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 29(1), 263-273 (2014-11-08)
The purpose of this study was to investigate the origin and function of the aldo-keto reductase (AKR) superfamily as enzymes involved in the detoxification of xenobiotics. We used the cyanobacterium Synechocystis sp. PCC 6803 as a model organism and sequence...
Huiling Li et al.
Bioresource technology, 176, 242-248 (2014-12-03)
The conversion of xylose, water-insoluble hemicelluloses (WIH) and water-soluble fraction (WSF) of corncob to furfural was performed using montmorillonite with tin ions (Sn-MMT) containing double acid sites as a solid acid catalyst. The co-existence of Lewis acids and Brønsted acids...
Pingxi Xu et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(46), 16592-16597 (2014-10-29)
Insect repellents are important prophylactic tools for travelers and populations living in endemic areas of malaria, dengue, encephalitis, and other vector-borne diseases. DEET (N,N-diethyl-3-methylbenzamide) is a 6-decade-old synthetic repellent, which is still considered the gold standard of mosquito repellents. Mosquitoes...
Yan Zhang et al.
Journal of industrial microbiology & biotechnology, 41(10), 1505-1516 (2014-08-03)
Fermentation of liquid hot water (LHW) pretreated Miscanthus giganteus (MG) by Clostridium beijerinckii NCIMB 8052 was investigated towards understanding the toxicity of lignocellulose-derived inhibitors to solventogenic Clostridium species vis-à-vis butanol production. While C. beijerinckii NCIMB 8052 did not grow in...
Chandan Kundu et al.
Bioresource technology, 178, 28-35 (2014-09-11)
In order to produce ethanol from yellow poplar, deacetylation was performed using sodium hydroxide (NaOH). Optimal deacetylation conditions were determined by a response surface methodology. The highest acetic acid concentration obtained was 7.06 g/L when deacetylation was performed at 60...
[HYGIENIC PROBLEMS OF FURFURAL].
I KLUCIK
Bratislavske lekarske listy, 43, 488-496 (1963-01-01)
Danielle Miller et al.
Biochemistry, 53(28), 4635-4647 (2014-07-01)
We have established the biosynthetic pathway and the associated genes for the biosynthesis of the 5-(aminomethyl)-3-furanmethanol (F1) moiety of methanofuran in the methanogenic archaeon Methanocaldococcus jannaschii. The recombinant enzyme, derived from the MJ1099 gene, was shown to readily condense glyceraldehyde...
Rui Xie et al.
Bioresource technology, 186, 106-113 (2015-03-31)
Carbonyl compounds generated in biomass pretreatment hinder the biochemical conversion of biomass hydrolysates to biofuels. A novel approach of detoxifying hydrolysates with amino acids for ethanol production was developed. Among the 20 amino acids assessed for their detoxification efficiency and...
Tim Ståhlberg et al.
ChemSusChem, 4(4), 451-458 (2011-01-29)
The synthesis of 5-(hydroxymethyl)furfural (HMF) in ionic liquids is a field that has grown rapidly in recent years. Unique dissolving properties for crude biomass in combination with a high selectivity for HMF formation from hexose sugars make ionic liquids attractive...
Rosario Sánchez-Gómez et al.
Journal of agricultural and food chemistry, 62(45), 10861-10872 (2014-10-23)
Vine-shoots are an important waste in all viticulture areas that should be re-used with innovative applications. The aim of this work was to produce Airén waste vine-shoot aqueous extracts by four solid-liquid extraction techniques such as conventional solid-liquid extraction (CSLE)...
Jean-Paul Lange et al.
ChemSusChem, 5(1), 150-166 (2012-01-04)
Furfural offers a promising, rich platform for lignocellulosic biofuels. These include methylfuran and methyltetrahydrofuran, valerate esters, ethylfurfuryl and ethyltetrahydrofurfuryl ethers as well as various C(10)-C(15) coupling products. The various production routes are critically reviewed, and the needs for improvements are...
Xiang-Ling Tan et al.
Natural product communications, 9(4), 529-532 (2014-05-30)
Eucommiae Cortex (Eucommia ulmoides Oliver Bark) has been used for anti-osteoporosis usually as an ethnic drug for hundred years in China. In this study, a bioactive compound, 5-(hydroxymethyl)-2-furaldehyde (5-HMF), was isolated from Eucommiae Cortex. We found that after rat bone...
Jae Won Lee et al.
Bioresource technology, 182, 296-301 (2015-02-24)
The objectives of this study were to explore the feasibility of applying sequential dilute acid and alkali pretreatment into the hydrolysis of corn stover and to elucidate the effects of structural changes in the biomass on its enzymatic digestibility. H2SO4...
Maryam Chaichi et al.
Food additives & contaminants. Part B, Surveillance, 8(1), 73-80 (2014-10-31)
In this study, the levels of furan, 2-methylfuran, 2,5-dimethylfuran, vinyl furan, 2-methoxymethyl-furan and furfural in different coffee products were evaluated. Simultaneous determination of these six furanic compounds was performed by a head space liquid-phase micro-extraction (HS-LPME) method. A total of...
Wenju Wang et al.
Bioresource technology, 183, 188-194 (2015-03-07)
Direct catalytic transformation of xylan-type hemicelluloses to furfural in the aqueous system and the biphasic system were comparatively investigated under mild conditions. Screening of several promising chlorides for conversion of beech xylan in the aqueous system revealed the Lewis acid...
Wei Qi et al.
Journal of industrial microbiology & biotechnology, 41(10), 1553-1562 (2014-08-03)
As one of the major microbes in the soy sauce fermentation, Candida versatilis enriches the flavor and improves the quality of soy sauce. In this study, a combination of five different GC-MS and LC-MS-based metabolome analytical approaches was used to...
Charlotte van Rooijen et al.
Journal of agricultural and food chemistry, 62(35), 8883-8891 (2014-08-05)
During processing of pet food, the Maillard reaction occurs, which reduces the bioavailability of essential amino acids such as lysine and results in the formation of advanced Maillard reaction products (MRPs). The aim of this study was to quantitate MRPs...
Production of 5-hydroxymethylfurfural and furfural by dehydration of biomass-derived mono-and poly-saccharides.
Chheda JN, et al.
Green Chemistry, 9(4), 342-350 (2007)
Taeheon Lee et al.
Nanoscale, 7(15), 6745-6753 (2015-03-26)
We synthesized poly((furfuryl methacrylate)-co-(2-(dimethylamino)ethyl methacrylate)) (p(FMA-co-DMAEMA)) for the dispersion of single-walled carbon nanotubes (SWCNTs) while maintaining their high aspect ratios. The nanotubes' length and height were 2.0 μm and 2 nm, as determined by transmission electron microscopy and atomic force...
T B Adams et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 35(8), 739-751 (1997-08-01)
The Expert Panel of the Flavor and Extract Manufacturers' Association (FEMA) has assessed the safety of furfural for its continued use as a flavour ingredient. The safety assessment takes into account the current scientific information on exposure, metabolism, pharmacokinetics, toxicology...

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