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Wysłany: Pon 7:59, 06 Gru 2010
Temat postu: true religion jeans Glucosinolate retention mechan
RP chromatography glucosinolate Quantum Chemical Study of Retention Mechanism
Density of hydrogen as a measure of the size parameters. That the greater the electron density of its ability to provide greater electronic,
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, and mobile phase to form the greater force. At the same time the coefficients from the equation can be seen in the coefficient of hydrogen bonds is 30.5 times the dipole moment coefficients, the total energy coefficient is 83.013 times. This paper argues that glucosinolates in the polar reverse phase chromatography in methanol / water solution as mobile phase volume, the role of hydrogen bonding is the most prominent. 3 Conclusion This article glucosinolates and c. 8 alkanes as a super-molecular system to study the AM1 quantum chemistry method, its level from the electronic structure,
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, we find the glucosinolates in the RP-HPLC retention capacity of the total energy not only with the system, but also to dipole moment and hydrogen related. In particular, the size of hydrogen retention time of glucosinolates greater impact. Because glucosinolate extraction and separation factors, currently available data retention time is limited, so regression equation obtained in the quantitative limitations still exist, but the mechanism of retention and the ability to predict the size of reserves has some significance. Although the model results also larger error, but with quantum chemistry methods Retention mechanism of the research there was still a great prospect. References: 11: Wang L, Han Shuo stare. Quantitative structure-activity relationships of organic [M]. Beijing: China Environmental Science Press ,1993:301-331 .2: Wang L, support is good, high Songjeong, et al. Molecular structure and retention [M]. Beijing: Chemical Industry Press ,1994:213-298. : 3: DewarMJS, ZoebischEG, HealyEF, eta1. Developmentanduseofquantummechanicalmolecularmodel [J]. JAmChemSoc. , 1985,107 (13) :3902 -3909. L4DuncanAJG. IntoxicsubstancesincropplantslJj. TheRoyalSocietyofChemistry, Cambridge ,1991:126-147 .5 a GrifiqthsDW, BirchANE, HillmanJR. Antinutritionalcompoundsinthebrassicaceae: analysis, biosynthesis, chemistryanddietaryeffectslJJ. JournalofHorticulturalScienceandBiotechnology, 1998,
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,73: l-l8.6LinCM, KimJ, DuwX, eta1. Bactericidalactivityofisothicyantesagainstpathogensonfreshproduce [J]. JournalofFoodProtec-tion. 2000,63:25-30. QuantumresearchforglucosinolatesonRP-HPLCWANGZhi-gang, YUANLi ・ feng, GUOWei-qiang (Dept.ofChemistry, Zh ~ iangUniversity, Hangzhou310028,
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, China) Abstract: UsingAM1semiempiricalquantummethodforglucosinolateandCl8,
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, thequantitativestructive-propertyrelationship (QSRR) equationsofglucosinolateWaSestablishedbaSedontheoryenergydipolemomenthydrogenbondbyforwardstepwisemultipleregressionmethodology. Keywords: glucosinolates; structive-propertyrelationship (QSRR); AM1; relativeretentiontime
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