International Mycotoxin Check Sample Program: Part II. Report on Laboratory Performance for Determination of Aflatoxin M1 in Milk

1982 ◽  
Vol 65 (4) ◽  
pp. 864-868
Author(s):  
Marlin D Friesen ◽  
Liliane Garren
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Aflatoxin M1 ◽  
Check Sample ◽  
Sufficient Data ◽  
Statistical Comparison ◽  
Significant Difference ◽  
Aoac Method

Abstract A sample of aflatoxin M1-contaminated lyophilized cow's milk was analyzed by 80 laboratories in 30 countries. Sufficient data were obtained to permit a statistical comparison of the performance of laboratories using AOAC methods I and II and those using high performance liquid chromatography for quantitation. A significant difference was noted between means for laboratories using AOAC method I as opposed to those using HPLC methods. Overall reproducibility (between- plus within-laboratory precision) was best for laboratories using HPLC methods and poorest for those using AOAC method II.

International Mycotoxin Check Sample Program: Part I. Report on Laboratory Performance for Determination of Aflatoxins B1, B2, G1, and G2 in Raw Peanut Meal, Deoiled Peanut Meal, and Yellow Corn Meal

1982 ◽  
Vol 65 (4) ◽  
pp. 855-863
Author(s):  
Marlin D Friesen ◽  
Liliane Garren
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Peanut Meal ◽  
Check Sample ◽  
Corn Meal ◽  
Sufficient Data ◽  
Statistical Comparison ◽  
Yellow Corn

Abstract Three aflatoxin-contaminated samples (raw peanut meal, deoiled peanut meal, and yellow corn meal) were analyzed by 121 laboratories in 31 countries. Sufficient data were obtained to permit a statistical comparison of the performance of laboratories using the BF, CB, and EEC methods and those using high performance liquid chromatography (HPLC) for quantitation. No significant differences were found between means for laboratories using these 4 methods for the analysis of raw peanut meal or yellow corn meal. However, for deoiled peanut meal, means were significantly different for laboratories using the BF method compared with the CB or EEC methods for B1 and B2, and for laboratories using the CB method compared with HPLC methods for G2.

International Mycotoxin Check Sample Program. Part I. Report on the Performance of Participating Laboratories

1980 ◽  
Vol 63 (5) ◽  
pp. 1057-1066
Author(s):  
Marlin D Friesen ◽  
Ernest A Walker ◽  
Marcel Castegnaro
Keyword(s):  
High Performance Liquid Chromatography ◽  
High Performance ◽  
Peanut Butter ◽  
Peanut Meal ◽  
Check Sample ◽  
Corn Meal ◽  
Sufficient Data ◽  
Meal Sample ◽  
Statistical Comparison ◽  
Significant Difference

Abstract Three aflatoxin-contaminated samples, raw peanut meal, finished peanut butter, and white corn meal, were analyzed by 139 laboratories in 34 countries. Sufficient data were obtained to permit a statistical comparison of the performance of laboratories using the BF, CB, and Pons methods and those using high performance liquid chromatography for quantification. A raw peanut meal sample showed no significant differences among means for laboratories using the four methods, and a white corn meal sample showed only one such significant difference; however, a finished peanut butter sample containing less than 10 μg total aflatoxins/kg showed 10 significant differences among means for laboratories using the 4 methods considered

scholarly journals Determination of aflatoxin M1 in bovine milk from the Alagoas/Brazil State dairy belt by high performance liquid chromatography (HPLC)

2018 ◽  
Vol 12 (25) ◽  
pp. 580-586
Author(s):  
Matilde da Silva Alves Angela ◽  
Henrique de Souza Lima Pabllo ◽  
Alberto Santos da Costa Mario ◽  
Bernardo da Silva Cristian ◽  
dos Santos Sousa Jonas ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Bovine Milk ◽  
Aflatoxin M1

scholarly journals Determination of acrolein, ethanol, volatile acidity, and copper in different samples of sugarcane spirits

2012 ◽  
Vol 32 (3) ◽  
pp. 568-572 ◽  
Author(s):  
José Masson ◽  
Maria das Graças Cardoso ◽  
Lidiany Mendonça Zacaroni ◽  
Jeancarlo Pereira dos Anjos ◽  
Adelir Aparecida Sackz ◽  
...  
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
High Performance ◽  
Minas Gerais ◽  
Volatile Acidity ◽  
Legal Limits ◽  
Brazilian Legislation ◽  
Significant Difference ◽  
Average Size

Seventy-one samples of sugarcane spirits from small and average size stills produced in the northern and southern Minas Gerais (Brazil) were analyzed for acrolein using HPLC (High Performance Liquid Chromatography). Ethanol and copper concentrations and volatile acidity were also determined according to methods established by the Ministry of Agriculture, Livestock and Supply (MAPA). A total of 9.85% of the samples tested showed levels of acrolein above the legal limits, while the copper concentrations of 21.00% of the samples and the volatile acidity of 8.85% of the samples were higher than the limits established by the Brazilian legislation. The concentration of acrolein varied from 0 to 21.97 mg.100 mL-1 of ethanol. However, no significant difference at 5% of significance was observed between the samples produced in the northern and southern Minas Gerais. The method used for determination of acrolein in sugarcane spirits involved the formation of a derivative with 2,4-dinitrophenylhydrazine (2,4-DNPH) and subsequent analysis by HPLC.

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