Characterization and authentication of commercial cleaning products formulated with biobased surfactants by stable carbon isotope ratio

Talanta ◽  
2020 ◽  
Vol 219 ◽  
pp. 121256 ◽  
Author(s):  
Concetta Pironti ◽  
Oriana Motta ◽  
Maria Ricciardi ◽  
Federica Camin ◽  
Raffaele Cucciniello ◽  
...  
Keyword(s):  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio ◽  
Cleaning Products

Stable carbon isotope ratio variations of organic matter in Orca Basin sediments

1981 ◽  
Vol 45 (2) ◽  
pp. 257-260 ◽  
Author(s):  
Mark A Northam ◽  
David J Curry ◽  
Richard S Scalan ◽  
Patrick L Parker
Keyword(s):  
Organic Matter ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio ◽  
Orca Basin

Increase in soil stable carbon isotope ratio relates to loss of organic carbon: results from five long-term bare fallow experiments

Oecologia ◽  
2014 ◽  
Vol 177 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Lorenzo Menichetti ◽  
Sabine Houot ◽  
Folkert van Oort ◽  
Thomas Kätterer ◽  
Bent T. Christensen ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio ◽  
Bare Fallow

Detection of Beet Sugar Adulteration of Honey

1986 ◽  
Vol 69 (4) ◽  
pp. 652-654
Author(s):  
Jonathan W White ◽  
Robert W Meloy ◽  
Jerry L Probst ◽  
William F Huser
Keyword(s):  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Galactose Oxidase ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio ◽  
Beet Sugar ◽  
Additional Testing ◽  
The Mean

Abstract Quantitation of oligosaccharide-bound galactose by galactose oxidase treatment of the higher sugar fraction is useful to screen honeys with normal stable carbon isotope ratio values for the presence of beet sugar products. For 23 beet sugar products tested, the mean bound galactose value was 30.1 mg/100 g (as galactose); for 81 honeys, the mean was 3.1 mg/100 g, s = 4.4. Nine percent of the honey samples tested had values in the beet sugar range, so additional testing by other procedures is required for confirmation of adulteration, i.e., samples with 8-80 mg/100 g bound galactose should be further tested.

Diet selection by steers using microhistological and stable carbon isotope ratio analyses.

1999 ◽  
Vol 77 (8) ◽  
pp. 2252 ◽  
Author(s):  
L L Bennett ◽  
A C Hammond ◽  
M J Williams ◽  
C C Chase ◽  
W E Kunkle
Keyword(s):  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Carbon Isotope Ratio ◽  
Diet Selection ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio

Honey Protein as Internal Standard for Stable Carbon Isotope Ratio Detection of Adulteration of Honey

1989 ◽  
Vol 72 (6) ◽  
pp. 907-911 ◽  
Author(s):  
Jonathan W White ◽  
Kenneth Winters
Keyword(s):  
Carbon Isotope ◽  
Isotope Ratio ◽  
Stable Carbon Isotope ◽  
Internal Standard ◽  
Carbon Isotope Ratio ◽  
Objective Evaluation ◽  
Cane Sugar ◽  
Official Method ◽  
Stable Carbon ◽  
Stable Carbon Isotope Ratio

Abstract Using the difference in stable carbon isotope ratio between a honey and its protein fraction permits objective evaluation of possible adulteration of honey with small amounts (7-20%) as well as larger amounts of corn or cane sugar. The present uncertainty in interpretation of results from pure honeys with 5,3C values outside the generally accepted limits for pure honey of —27.5%o to —23.5%o is eliminated; likewise TLC testing to resolve questionable samples with 5n C values between —23.5 and —21.5%o is not needed. Fifty certified samples of pure honey were used to establish criteria for purity, and 38 other samples with δ13C values in the “questionable” or “adulterated” range for the AOAC official method were tested. A difference of 1.0%o or more between honey and protein fractions is proposed to indicate adulteration.

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