scholarly journals A Modified Method to Estimate Total Carbonyl Compounds in Frying Oils Using 1-Butanol as a Solvent

2003 ◽  
Vol 52 (7) ◽  
pp. 353-358 ◽  
Author(s):  
Yasushi ENDO ◽  
Makoto TOMINAGA ◽  
Misako TAGIRI-ENDO ◽  
Kazuo KUMOZAKI ◽  
Hiroyuki KOUZUI ◽  
...  
Keyword(s):  
Carbonyl Compounds ◽  
Frying Oils ◽  
Total Carbonyl ◽  
Modified Method

A modified method for the estimation of total carbonyl compounds in heated and frying oils using 2-propanol as a solvent

2001 ◽  
Vol 78 (10) ◽  
pp. 1021-1024 ◽  
Author(s):  
Yasushi Endo ◽  
Chang Mo Li ◽  
Misako Tagiri-Endo ◽  
Kenshiro Fujimoto
Keyword(s):  
Carbonyl Compounds ◽  
Frying Oils ◽  
Total Carbonyl ◽  
Modified Method

Determination of total carbonyl compounds in aqueous media

1993 ◽  
Vol 70 (9) ◽  
pp. 881-884 ◽  
Author(s):  
Natsuko Yukawa ◽  
Hitoshi Takamura ◽  
Teruyoshi Matoba
Keyword(s):  
Carbonyl Compounds ◽  
Aqueous Media ◽  
Total Carbonyl

scholarly journals Estimation of Total Carbonyl Compounds in Roasted and Dried Foods by the Tentative Method Using 1-Butanol as a Solvent

2009 ◽  
Vol 58 (1) ◽  
pp. 23-25 ◽  
Author(s):  
Riichiro Usuki ◽  
Yuriko Shibata ◽  
Misako Tagiri-Endo ◽  
Yasushi Endo
Keyword(s):  
Carbonyl Compounds ◽  
Tentative Method ◽  
Total Carbonyl ◽  
Dried Foods

Proportion of Hexanal to Total Carbonyl Compounds in Soybean Extracts

1995 ◽  
Vol 59 (4) ◽  
pp. 723-724 ◽  
Author(s):  
Natsuko Yukawa ◽  
Hitoshi Takamura ◽  
Keisuke Kitamura ◽  
Teruyoshi Matoba
Keyword(s):  
Carbonyl Compounds ◽  
Total Carbonyl

Proposal for Objective Evaluation of the Performance of Various Functional APC-resistance Tests in Genotyped Patients

1997 ◽  
Vol 78 (05) ◽  
pp. 1360-1365 ◽  
Author(s):  
G Freyburger ◽  
S Javorschi ◽  
S Labrouche ◽  
P Bernard
Keyword(s):  
Protein S ◽  
Objective Evaluation ◽  
Original Method ◽  
Screening Methods ◽  
Factor Xii ◽  
Factor V ◽  
Likelihood Ratios ◽  
Modified Method ◽  
Apc Resistance ◽  
Two Parameters

SummaryThe aim of the present study was to evaluate the relative performance of five screening methods for APC resistance caused by the factor V:Q506 mutation: the original method Coatest® APC™ Resistance Chromogenix, a modified method using the same reagents but a predilution 1+4 of the plasma in a factor V deficient plasma from Stago (Stago deficient V) or from Chromogenix (V-DEF Plasma), the Coatest® APC™ Resistance V (Chromogenix), and Accelerimat™ from bioMérieux. Normalization was done against a pool of normal plasmas for the methods from Chromogenix. The study included 350 subjects, 219 were genotyped (174 FV:R506R, 42 FV:Q506R, 3 FV:Q506Q) and most of them were assessed by more than one method. Uncertainty in predicting the FV genotype was evaluated by statistical analysis, which provided a way to quantitate the performance of the different diagnostic approaches. Performance of each test was evaluated by its sensitivity, specificity, R.O.C. curves, positive and negative likelihood ratios (LR), and the overall performance was determined by two parameters derived from the LR curves : the maximum LR value obtained at the crossover of the two curves, and the distance between the two curves for LR = 10. Coatest® APC™ Resistance V and Accelerimat™ were proven to be the methods most able to discriminate for factor V:Q506, while normalization was not shown to improve the screening performance. The original method from Chromogenix was confirmed to undergo many influences (factor XII, PAI-1, thrombin- antithrombin complexes, antithrombin III, hematocrit). Although a very good improvement was provided by the newest methods, they were shown to be influenced by protein S and/or factor V levels in the sample plasma.

Silicon Assisted Sulfuration: Tetrachlorosilane-Sodium Sulfide-A New Potent Thionating Reagent for Carbonyl Compounds

2007 ◽  
Author(s):  
T. A. Salama ◽  
S. S. Elmorsy ◽  
A. M. Khalil ◽  
M. A. Ismail ◽  
A. S. El-Ahl
Keyword(s):  
Carbonyl Compounds ◽  
Sodium Sulfide

QUANTITATIVE ESTIMATION OF URINARY PREGNANETRIOL, PREGNANETRIOLONE, TETRAHYDRO S AND Δ5-PREGNENETRIOL IN THE INVESTIGATION OF ADRENOCORTICAL FUNCTION

1969 ◽  
Vol 60 (4) ◽  
pp. 657-668 ◽  
Author(s):  
Frances J. Thomas ◽  
A. W. Steinbeck
Keyword(s):  
Congenital Adrenal Hyperplasia ◽  
Cushing’S Syndrome ◽  
Adrenocortical Carcinoma ◽  
Quantitative Estimation ◽  
Cushing's Syndrome ◽  
Adrenocortical Function ◽  
Adrenal Hyperplasia ◽  
Ectopic Acth ◽  
Modified Method ◽  
Idiopathic Hirsutism

ABSTRACT A modified method for the estimation of urinary pregnanetriol, pregnanetriol, pregnanetriolone, Δ5-pregnenetriol and tetrahydro S was investigated. The steroids, separated by chromatography, were measured quantitatively, tetrahydro S by reaction with blue tetrazolium and the other three as acetaldehydogenic substances. The excretion of these steroids was studied in suspected instances of adrenal and/or ovarian disease. Urinary pregnanetriol and tetrahydro S levels were normal in Cushing's syndrome, secondary adrenocortical carcinoma, the Stein-Leventhal syndrome, idiopathic hirsutism and hypertension. Tetrahydro S was doubtfully elevated in an instance of ectopic ACTH Cushing's syndrome. Pregnanetriol excretion was elevated in untreated cases of congenital adrenal hyperplasia and after treatment in some. Pregnanetriolone was found in all patients with congenital adrenal hyperplasia, including those receiving cortisone. Pregnanetriolone was also detected in Cushing's syndrome, secondary adrenocortical carcinoma, the Stein-Leventhal syndrome, ectopic ACTH Cushing's syndrome and suspected congenital adrenal hyperplasia. Δ5-pregnenetriol was present as a glucuronide in the Stein-Leventhal syndrome and idiopathic hirsutism. The diagnostic implications of these results are discussed.

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