PMID: 15382866Sep 24, 2004Paper

Solid-state NMR characterization of pyrene-cuticular matter interactions

Environmental Science & Technology
Joseph R SachlebenPatrick G Hatcher

Abstract

One- and two-dimensional nuclear magnetic resonance (NMR) experiments were performed on Agave americana cutan and tomato cutin to examine the interactions between a hydrophobic pollutant, pyrene, and cuticular material. Variable-temperature NMR experiments show that cutan, an acid- and base-resistant cuticular biopolymer, undergoes the characteristic melting behavior of "polyethylene-like" crystallites, while the tomato cutin does not. The melting point of A. americana cutan was found to be approximately 360 K, which is consistent with the thickness of the polyethylene crystallites of 30-40 methylene units. Sorption models predict that the sorption behavior of hydrophobic pollutants should depend on the phase of the cuticular material. 13C NMR experiments on labeled pyrene were performed. The 13C T1 of pyrene decreases significantly from that of crystalline pyrene upon sorption to both tomato fruit cutin and A. americana cutan, indicating that the pyrene is mobile upon sorption. Magic angle spinning experiments at low spinning frequencies (2-4 kHz) provided the chemical shift anisotropy (CSA) parameters delta, the anisotropy, and eta, the asymmetry parameter, for crystalline and sorbed pyrene. For crystalline pyrene, two types ...Continue Reading

References

May 25, 2002·Environmental Science & Technology·Myrna J SalloumPatrick G Hatcher
Oct 14, 2003·Environmental Toxicology and Chemistry·Benny Chefetz

❮ Previous
Next ❯

Citations

Aug 23, 2012·Environmental Science & Technology·Andre J SimpsonRonald Soong
Dec 5, 2012·Environmental Science & Technology·Perry J Mitchell, Myrna J Simpson
Apr 12, 2012·Journal of Visualized Experiments : JoVE·Subhasish ChatterjeeRuth E Stark
May 10, 2008·The European Journal of Contraception & Reproductive Health Care : the Official Journal of the European Society of Contraception·Shareen Y El-Ibiary, Jennifer M Cocohoba
Dec 20, 2007·Nursing for Women's Health·Jill M Fuller
Oct 14, 2008·Phytochemistry·Ruth E StarkJoel R Garbow
Mar 5, 2011·The New Phytologist·Eva DomínguezAntonio Heredia
Oct 21, 2016·Culture, Health & Sexuality·Waltraud Maierhofer, Emanuella Israel
Sep 11, 2009·Health Care for Women International·Sadia HaiderSuellen Miller
Feb 28, 2009·The Journal of Law, Medicine & Ethics : a Journal of the American Society of Law, Medicine & Ethics·Toby L SchonfeldChristopher J Kratochvil
Apr 30, 2008·Environmental Science & Technology·Naser M ElayanRobert L Cook
Mar 15, 2011·Progress in Nuclear Magnetic Resonance Spectroscopy·André J SimpsonMyrna J Simpson
Apr 17, 2009·Environmental Science & Technology·Benny Chefetz, Baoshan Xing
Mar 21, 2008·Environmental Science & Technology·Michal Shechter, Benny Chefetz
May 25, 2006·Environmental Science & Technology·Alexandra Ter HalleClaire Richard
Nov 22, 2005·Environmental Science & Technology·Baoliang Chen, Baoshan Xing
Sep 28, 2006·Journal of Agricultural and Food Chemistry·Michal ShechterBenny Chefetz

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.