scholarly journals Full 1 H and 13 C NMR spectral assignment of conjugated valerolactone metabolites isolated from urine of black tea consumers by means of SPE-prepLC-MS-LC-MS-NMR

2019 ◽  
Vol 57 (9) ◽  
pp. 548-557
Author(s):  
Niels de Roo ◽  
Sanne M. J. Wilmsen ◽  
Velitchka V. Mihaleva ◽  
Doris M. Jacobs ◽  
John P. M. van Duynhoven
Keyword(s):  
Black Tea ◽  
Spectral Assignment ◽  
C Nmr

scholarly journals 1H and13C NMR spectroscopic studies of half-esters from monohydrolysis of dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates

2004 ◽  
Vol 18 (3) ◽  
pp. 469-483
Author(s):  
Yoshikazu Hiraga ◽  
Satomi Niwayama
Keyword(s):  
Nmr Spectra ◽  
Chemical Shifts ◽  
2D Nmr ◽  
Spectroscopic Studies ◽  
Carboxyl Group ◽  
1H And13c Nmr ◽  
Nmr Chemical Shifts ◽  
2D Nmr Spectra ◽  
Spectral Assignment ◽  
C Nmr

The structures of the half-esters from the monohydrolysis of (exo,exo)-, (endo,endo)-, and (endo,exo)-dialkyl bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylates were determined by1H and13C NMR as well as 2D NMR spectra, and the complete spectral assignment has been made. After conversion of one of the carboalkoxy groups to a carboxyl group, different tendencies were observed for the differences in1H and13C NMR chemical shifts between half-esters and the corresponding diesters.

1 H and 13 C NMR spectral assignment of 29 N ′‐(3‐([1,1′‐biphenyl]‐4‐yl)‐1‐phenyl‐1 H ‐pyrazol‐4‐yl)acylhydrazones

2020 ◽  
Vol 59 (6) ◽  
pp. 648-662
Author(s):  
Jihyun Park ◽  
Seunghyun Ahn ◽  
Youngshim Lee ◽  
Dongsoo Koh ◽  
Yoongho Lim
Keyword(s):  
Spectral Assignment ◽  
C Nmr

scholarly journals A revision of the13C NMR spectral assignment of globulol

1999 ◽  
Vol 14 (2) ◽  
pp. 61-66 ◽  
Author(s):  
Masao Toyota ◽  
Masami Tanaka ◽  
Yoshinori Asakawa
Keyword(s):  
Nmr Spectra ◽  
Nmr Spectrum ◽  
Sesquiterpene Alcohol ◽  
Complete Assignment ◽  
Spectral Assignment ◽  
C Nmr

Complete assignment of the13C NMR spectrum of the aromadendrane‒type sesquiterpene alcohol, globulol was reported, however, it still remained to be ambiguous. We report here the unambiguous and complete assignment of the1>H and13C NMR spectra of (+)‒globulol, which was isolated from the liverwortsPlagiochila ovalifolia,Neotrichocolea bissetiiandPallavicinia subciliata

Complete 1 H and 13 C NMR spectral assignment of benzo[d ]isothiazole derivatives and of an isoindole isoster

2008 ◽  
Vol 46 (12) ◽  
pp. 1175-1179 ◽  
Author(s):  
Matteo Incerti ◽  
Domenico Acquotti ◽  
Paola Vicini
Keyword(s):  
Spectral Assignment ◽  
C Nmr

On the cross-sectional shape of the cellulose crystallites in the tunicate Halocynthia papillosa

1990 ◽  
Vol 48 (3) ◽  
pp. 566-567
Author(s):  
J.-F. Revol ◽  
Y. Van Daele ◽  
F. Gaill
Keyword(s):  
Contrast Imaging ◽  
Animal Kingdom ◽  
Bright Field ◽  
Field Mode ◽  
Cross Sectional ◽  
Ultrathin Sections ◽  
The Cross ◽  
Sectional Shape ◽  
Valonia Ventricosa ◽  
C Nmr

The only form of cellulose which could unequivocally be ascribed to the animal kingdom is the tunicin that occurs in the tests of the tunicates. Recently, high-resolution solid-state l3C NMR revealed that tunicin belongs to the Iβ form of cellulose as opposed to the Iα form found in Valonia and bacterial celluloses. The high perfection of the tunicin crystallites led us to study its crosssectional shape and to compare it with the shape of those in Valonia ventricosa (V.v.), the goal being to relate the cross-section of cellulose crystallites with the two allomorphs Iα and Iβ.In the present work the source of tunicin was the test of the ascidian Halocvnthia papillosa (H.p.). Diffraction contrast imaging in the bright field mode was applied on ultrathin sections of the V.v. cell wall and H.p. test with cellulose crystallites perpendicular to the plane of the sections. The electron microscope, a Philips 400T, was operated at 120 kV in a low intensity beam condition.

Effects of green tea, black tea and rooibos on angiotensin-converting enzyme activity in healthy volunteers

Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
IAL Persson ◽  
K Persson ◽  
S Hägg ◽  
RGG Andersson
Keyword(s):  
Enzyme Activity ◽  
Angiotensin Converting Enzyme ◽  
Healthy Volunteers ◽  
Green Tea ◽  
Black Tea ◽  
Converting Enzyme ◽  
Angiotensin Converting Enzyme Activity

Effect of Catechins Extract of Green Tea on Quality Protection of Black Tea-bag During Storage

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
M Mizani ◽  
S Noori ◽  
A Gerami
Keyword(s):  
Green Tea ◽  
Black Tea

Microarray reveals positive effects of green and black tea polyphenols on TNF[alpha]-induced changes of gene expression

2013 ◽  
Author(s):  
Husna Zulkipli ◽  
Norita Salim ◽  
Gabriele Anisah Froemming ◽  
Aletza Mohd Ismail ◽  
Hapizah Nawawi
Keyword(s):  
Gene Expression ◽  
Black Tea ◽  
Tea Polyphenols ◽  
Tnf Alpha ◽  
Positive Effects ◽  
Black Tea Polyphenols ◽  
Green And Black Tea ◽  
Induced Changes
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