نتایج جستجو برای: furan

تعداد نتایج: 3475  

Journal: :journal of sciences, islamic republic of iran 2012
l. lokwani

a new series of noncyclic ionophores containing two to four furan units (ia to iiib) i.e. 1,1-difurylethane (ia), 2,5-bis(methylfurfuryl)furan (iia) and 1,1’ ethyledenebis[5-(methylfurfuryl)furan] (iiia), 2,2-difurylpropane (ib), 2,5-bis (dimethylfurfuryl)furan(iib), 2,2’-isopropylidenebis[5-(dimethylfurfuryl)furan] (iiib) have been synthesized by the condensation of furan with acetaldehyde and...

L. Lokwani

A new series of noncyclic ionophores containing two to four furan units (Ia to IIIb) i.e. 1,1-difurylethane (Ia), 2,5-bis(methylfurfuryl)furan (IIa) and 1,1’ ethyledenebis[5-(methylfurfuryl)furan] (IIIa), 2,2-difurylpropane (Ib), 2,5-bis (dimethylfurfuryl)furan(IIb), 2,2’-isopropylidenebis[5-(dimethylfurfuryl)furan] (IIIb) have been synthesized by the condensation of furan with acetaldehyde and...

G. O. Oyeleke I. O. Abdulsalami K. A Alabi M. D. Adeoye,

The synthesis and characterization of 1, 3-bis [(furan-2-yl) methylene] urea (BFMU) and 1, 3-bis [furan-2-yl) methylene] thiourea (BFMT) have been reported by our research team. The effects of solvents polarity on their electronic transition energies (HOMO-LUMO) and associated qualitative structure activity relationship parameters (i.e. log P, ionization energies and global hardness) were inves...

Journal: :Molecules 2017
Liang-Liang Chen Pei Wang Hui-Qin Chen Zhi-Kai Guo Hao Wang Hao-Fu Dai Wen-Li Mei

Six new furan derivatives, named 5-(3-methoxy-3-oxopropyl)-furan-2-carboxylic acid (1), 1-(5-(2-hydroxypropanoyl)-furan-2-yl)-pentan-3-one (2), 2-hydroxy-1-(5-(1-hydroxypentyl)-furan-2-yl)-propan-1-one (3), 1-(5-(1,2-dihydroxypropyl)-furan-2-yl)-pentan-1-one (4), 5-(1-hydroxypent-4-en-1-yl)-furan-2-carboxylic acid (5) and 5-(3-hydroxypentyl)-furan-2-carboxylic acid (6), together with two new na...

Journal: :international journal of environmental research 2013
h. hoveidi h. sid kalal g. nabi bidhendi h. rashedi d. vafaei mehr

furan is a possible human carcinogen in many types of foods. a new and sensitive electroanalytical method for determination of furan has been developed and validated. the best condition forelectrochemical response was obtained with 0.1 m britton-rabinson buffer solution (ph=5) a glassy carbonelectrode (gce) was used as the working electrode, a ag/agcl/ kcl(sat.) electrode served as the referenc...

Journal: :Journal of food science 2008
X Fan K J B Sokorai

Furan, a possible carcinogen, is commonly induced by thermal processing in a wide variety of foods. The possible formation of furan from fresh-cut fruits and vegetables due to irradiation was studied. Nineteen fresh-cut fruits and vegetables were irradiated by 5 kGy gamma rays at 4 degrees C. Furan was analyzed from the irradiated samples using a number of preparation methods. The results showe...

Journal: :Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association 2008
Hee-jin Jun Kwang-Geun Lee Yun-Kyung Lee Gun-Jo Woo Young Sig Park Sung-Joon Lee

Furan is a colorless, volatile compound that is found in heat-treated foods, such as canned and jarred foods, at levels up to 100 ppb. When animals ingest high doses, furan metabolites, such as cis-2-butene-1,4-dial, cause severe hepatotoxicity and carcinogenicity. However, the levels and effects of furan on humans are not known. Therefore, we measured urinary furan in 100 healthy individuals c...

2006
XUETONG FAN CHRISTOPHER H. SOMMERS

Besides meat as the major component, ready-to-eat (RTE) meat and poultry products often contain ingredients such as Na-ascorbate, Na-erythorbate, glucose, honey, corn syrup, and Na-nitrite. Furan is a potential carcinogen and information is needed on its formation in irradiated RTE products. In the present study, we investigated the generation of irradiation-induced furan in aqueous solutions o...

2014
Leah A. Gates Martin B. Phillips Brock A. Matter Lisa A. Peterson

Furan is a liver toxicant and carcinogen in rodents. Although humans are most likely exposed to furan through a variety of sources, the effect of furan exposure on human health is still unknown. In rodents, furan requires metabolism to exert its toxic effects. The initial product of the cytochrome P450 2E1-catalyzed oxidation is a reactive a,b-unsaturated dialdehyde, cis-2-butene-1,4-dial (BDA)...

Journal: :international journal of environmental research 0
h. hoveidi graduate faculty of environment, university of tehran, tehran, iran h. sid kalal nfcrs, nuclear science and technology research institute, aeoi, p.o. box 11365-3486, tehran, iran g. nabi bidhendi graduate faculty of environment, university of tehran, tehran, iran h. rashedi biotechnology group school of chemical engineering college of engineering, university of tehran p.o.box:11155-4563,tehran, iran d. vafaei mehr university of tehran, aras international campus, aras, iran

furan is a possible human carcinogen in many types of foods. a new and sensitive electroanalytical method for determination of furan has been developed and validated. the best condition forelectrochemical response was obtained with 0.1 m britton-rabinson buffer solution (ph=5) a glassy carbonelectrode (gce) was used as the working electrode, a ag/agcl/ kcl(sat.) electrode served as the referenc...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید