METHODS FOR RAPID DETERMINATION OF SPECIFIC GRAVITY OF SINGLE SEEDS AND SEED SAMPLES AND THE CORRELATION OF SPECIFIC GRAVITY WITH OIL CONTENT

1963 ◽  
Vol 43 (2) ◽  
pp. 151-156 ◽  
Author(s):  
S. H. Pawlowski
Keyword(s):  
Specific Gravity ◽  
Oil Content ◽  
Rapid Determination ◽  
Correlation Coefficients ◽  
Accurate Method ◽  
Flax Seed ◽  
Seed Particles ◽  
Oil Percentage ◽  
Single Seeds

The specific gravities of seed of 14 safflower varieties were determined by three methods and correlated with oil percentages. Displacing a weighed quantity of seed in. water or mercury proved to be an accurate method of determining the specific gravity of seed samples. However, displacement in mercury is a more rapid method. The specific gravity of individual seeds or seed particles was determined rapidly with a density gradient tube but this method was not practical with large seed samples.A correlation coefficient of r = − 0.91 (P < 0.01) was obtained between specific gravity and oil content of safflower embryos. The correlation coefficients between specific gravity and oil percentage in flax seed, rapeseed, and dehulled sunflowers were −0.90, −0.84, and −0.90 (P < 0.01), respectively.

Oil content of cotton seed in Northern Nigeria: 1. Assessment of nuclear magnetic resonance for the determination of the oil percentage of cotton seed

1977 ◽  
Vol 88 (3) ◽  
pp. 727-729 ◽  
Author(s):  
J. B. Smithson ◽  
H. E. Gridley
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Cotton Seed ◽  
Oil Content ◽  
Northern Nigeria ◽  
Local Varieties ◽  
Oil Percentage ◽  
Conventional Solvent Extraction ◽  
Nuclear Magnetic

SUMMARYThe oil content of a number of introduced and local varieties was determined using three nuclear magnetic resonance oil analysers at different centres and compared with results from conventional solvent extraction. Differences were evident between the three centres and between the techniques but in both cases the rankings were similar.

scholarly journals The rapid determination of carcass fat by the Foss-Let specific gravity technique

1976 ◽  
Vol 36 (3) ◽  
pp. 567-570 ◽  
Author(s):  
C. J. H. Woodward ◽  
P. Trayhurn ◽  
W. P. T. James
Keyword(s):  
Specific Gravity ◽  
Rapid Determination ◽  
Reference Method ◽  
New Method ◽  
Storage Lipid ◽  
Structural Lipid ◽  
Nutritional Studies

1. Carcass fat was determined by extraction with tetrachloroethylene and measurement of the solvent's change in density. The results were comparable in precision to those of a reference method; the new method extracted storage lipid but little structural lipid.2. The technique is simple, rapid and appropriate for many nutritional studies.

Rapid determination of Ti in TiO2 by ICP OES

2016 ◽  
Vol 8 (34) ◽  
pp. 6463-6467 ◽  
Author(s):  
E. J. Dos Santos ◽  
M. P. Dos Santos ◽  
A. B. Herrmann ◽  
R. E. Sturgeon
Keyword(s):  
Rapid Determination ◽  
Accurate Method ◽  
Icp Oes

An improved, precise and accurate method for the quantitation of Ti by ICP OES in TiO2 pigments and related materials is proposed.

Improved rapid assay of uric acid in serum by liquid chromatography.

1988 ◽  
Vol 34 (12) ◽  
pp. 2567-2568 ◽  
Author(s):  
M Tanaka ◽  
M Hama
Keyword(s):  
Uric Acid ◽  
High Performance ◽  
Rapid Determination ◽  
Correlation Coefficients ◽  
Gel Permeation Chromatography ◽  
Serum Samples ◽  
Step Procedure ◽  
One Step ◽  
Highly Porous

Abstract This improved method for rapid determination of uric acid in serum is based on high-performance liquid-gel-permeation chromatography, with hydrophilic and highly porous vinyl alcohol copolymer as packing material. It has the following advantages: no need for sample deproteinization or use of a precolumn, more than 500 serum samples can be analyzed without having to regenerate or recondition the analytical apparatus, and the analysis for uric acid is a one-step procedure. Correlation coefficients between this method and other methods are very good (r = 0.998, 0.999).

A New and Rapid Determination of Pyridinium Aldoximes in Blood and Urine

1969 ◽  
Vol 15 (1) ◽  
pp. 72-83 ◽  
Author(s):  
William A Groff ◽  
Robert I Ellin
Keyword(s):  
Standard Deviation ◽  
Transfer Rate ◽  
Rapid Determination ◽  
Accurate Method ◽  
Small Sample ◽  
Basic Solution ◽  
Pyridinium Oximes ◽  
Average Variation ◽  
The Mean

Abstract A rapid and accurate method for analyzing pyridinium oximes—N-methylpyridinium-2-aldoxime chloride, N,N'-trimethylene-(pyridinium-4-aldoxime) dihalide, and N,N'-oxydimethyl-(pyridinium-4-aldoxime) dichloride—in plasma, urine, and whole blood is described. The method is completely automated and requires small sample volumes. Concentrations ranging from 3 to 120 µEq./L. in biologic fluids can be determined at a rate of 40 samples per hour. This technic can be applied to oximes which are unstable in basic solution. The average variation of the oxime concentration used to establish calibration curves, as determined by the ratio of the standard deviation to the mean, was ± 1.5%. Plasma and albumin increase the transfer rate of the oximes through the dialyzing membrane. Theoretical concentrations to explain this phenomenon are presented.

A suspension weighing technique for the rapid determination of specific gravity of eggs

1969 ◽  
Vol 9 (37) ◽  
pp. 131 ◽  
Author(s):  
RAE Pym
Keyword(s):  
Specific Gravity ◽  
Breaking Strength ◽  
Rapid Determination ◽  
White Leghorn ◽  
Salt Solutions ◽  
Egg Weight ◽  
Closed Population ◽  
Impact Device ◽  
The Impact

A suspension weighing technique, developed for the rapid determination of the specific gravity of eggs, is described and compared with one using salt solutions of known density. A simple impact device was used to determine shell strength for correlation with the results of specific gravity determinations. Eggs were obtained from three strains of domestic fowl : White Leghorn, .Australorp, and Synthetic (a closed population in its eighth generation originally based on White Leghorn-Australorp crosses). The numbers of eggs examined in one hour by suspension weighing, salt solutions, and the impact device were 400, 200, and 100 respectively. Repeatabilities of specific gravity based on three eggs per hen were slightly higher for suspension weighing than for salt solutions. Correlations between specific gravity and breaking strength ranged from +0.72 to +0.78 for the three strains. Correlations between egg weight and specific gravity and between egg weight and breaking strength were effectively zero. It is concluded that for routine work, measurement of specific gravity by suspension weighing is a reliable and rapid method of estimating shell strength.

Rapid Determination of Oil Content in Seed of Jatropha Curcas by NMR

2010 ◽  
Vol 4 (4) ◽  
pp. 436-439
Author(s):  
Jun Wu ◽  
Yiran Guo ◽  
Yuan Liu ◽  
Fang Chen
Keyword(s):  
Jatropha Curcas ◽  
Oil Content ◽  
Rapid Determination
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