RAPID DETERMINATION OF SEED GERMINATION POTENTIAL TO MEASURE QUALITY LOSS IN STORED WHEAT

A rapid method of determining wheat seed germination after 1 day (G1) of incubation was found. Germination of wheat seed stored at [Formula: see text] moisture content is estimated by adding 12% to G1; at <17% moisture content germination is not consistently predicted by G1.

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QUALITY ASSESSMENT OF STORED WHEAT DURING DRYING WITH NEAR-AMBIENT TEMPERATURE AIR

Canadian Journal of Plant Science ◽

10.4141/cjps85-111 ◽

1985 ◽

Vol 65 (4) ◽

pp. 849-866 ◽

Cited By ~ 7

Author(s):

R. N. SINHA ◽

W. E. MUIR ◽

D. B. SANDERSON

Keyword(s):

Seed Germination ◽

Moisture Content ◽

Ambient Temperature ◽

Quality Assessment ◽

Biological Agents ◽

Quality Loss ◽

Stored Wheat ◽

Aspergillus Glaucus ◽

Aspergillus Candidus

Quality loss of wheat at 19% moisture content, stored in six 1-m3 bins with three levels of ventilation, was determined during 286 days of storage in the autumn, winter and spring of 1983–1984 in Manitoba. The variables measured included: moisture content, temperature, CO2-O2 composition of intergranular air, seed germination, microflora and fat acidity. In the two high-airflow bins, 12.2 (L/sec)/m3, no spoilage occurred because the grain was dried to 13% moisture content in 28 days. In the two low-airflow bins, 0.8 (L/sec)/m3, some spoilage occurred after 30 days. In the two control bins, 0 (L/sec)/m3, grain began to spoil within 10 days. Fungi of the Aspergillus glaucus group and Aspergillus candidus appeared to be the main biological agents responsible for spoilage.Key words: Ventilation, Aspergillus, fat acidity, moisture, CO2

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Steel-shot method for measuring the density of soils

Canadian Geotechnical Journal ◽

10.1139/t10-034 ◽

2010 ◽

Vol 47 (11) ◽

pp. 1299-1304 ◽

Cited By ~ 1

Author(s):

Reed B. Freeman ◽

Chad A. Gartrell ◽

Lillian D. Wakeley ◽

Ernest S. Berney ◽

Julie R. Kelley

Keyword(s):

Moisture Content ◽

Rapid Determination ◽

Content Volume ◽

Test Method ◽

Unit Weight ◽

Soil Density ◽

Engineering Construction ◽

Steel Shot ◽

Time Requirements

The density of soil is crucial in engineering, construction, and research. Standard methods to determine density use procedures, equipment or expendable materials that limit their effectiveness in challenging field conditions. Some methods require burdensome logistics or have time requirements that limit their use or the number of tests that can be executed. A test method, similar to the sand-cone method, was developed that uses steel shot as the material to which a volume of soil is compared to calculate soil density. Steel shot is easily recovered and reused, eliminating the need for specialty sand and calibrated cones or containers, and allows rapid determination of the volume of displaced soil. Excavated soil also provides measurements of total mass and moisture content. Volume, mass, and moisture content are applied in simple calculations to determine wet and dry densities and unit weight of the soil. Proficiency in performing the test can be achieved with minimal training, and the required kit can be assembled for a reasonable cost. Field uses of the method in dry environments in a variety of soil types demonstrated that the method can produce repeatable results within 2% of the values of soil density determined by traditional methods, with advantages in logistics.

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Simple and Rapid Determination of Phytase Activity

Journal of AOAC International ◽

10.1093/jaoac/77.3.760 ◽

1994 ◽

Vol 77 (3) ◽

pp. 760-764 ◽

Cited By ~ 241

Author(s):

Adrianus J Engelen ◽

Fred C Van Der Heeft ◽

Peter H G Randsdorp ◽

Ed L C Smtt

Keyword(s):

Enzymatic Activity ◽

Rapid Method ◽

Rapid Determination ◽

Phytase Activity ◽

Sodium Phytate ◽

Microbial Phytase ◽

Hydrolysis Of

Abstract A simple and rapid method is described for determining the enzymatic activity of microbial phytase. The method is based on the determination of inorganic orthophosphate released on hydrolysis of sodium phytate at pH 5.5.

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Rapid Determination of Mono-, Di- and Tri-isopropyl Citrate in Foods by Gas Chromatography

Journal of Food Protection ◽

10.4315/0362-028x-49.11.914 ◽

1986 ◽

Vol 49 (11) ◽

pp. 914-916 ◽

Cited By ~ 2

Author(s):

SUMIKO TSUJI ◽

YASUHIDE TONOGAI ◽

YOSHIO ITO

Keyword(s):

Gas Chromatography ◽

Ethyl Acetate ◽

Rapid Method ◽

Rapid Determination ◽

Milk Powder ◽

Detection Limits ◽

Edible Oil ◽

Acid Condition

A simple and rapid method for determining mono-, di- and tri-isopropyl citrates in foods was developed. Isopropyl citrates in butter and milk powder were extracted with ethyl acetate under acid condition and in edible oil with hexane. The ethyl acetate containing isopropyl citrates was evaporated and the residue was taken up in hexane. The isopropyl citrates in hexane were extracted into acetonitrile. After evaporation of the solvent, isopropyl citrates were methylated with diazomethane, and they were determined by gas chromatography. Recoveries of mono-, di- and tri-isopropyl citrates from edible oil, butter and milk powder by this method were more than 92.9%, 95.7% and 94.8%, respectively. The detection limits of isopropyl citrates were 1 μg/g of sample.

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