Changes in concentration of aflatoxin M₁ during manufacture and storage of skim milk powder

• Published in: Journal of food protection Vol. 69; no. 3; pp. 682 - 685
• Main Authors: Deveci, O, Sezgin, E
• Format: Journal Article
• Language: English
• Published: Des Moines, IA International Association of Milk, Food and Environmental Sanitarians 01.03.2006
• Subjects: aflatoxin M1; Aflatoxin M1 - isolation & purification; Animals; Biological and medical sciences; Cattle; Consumer Product Safety; Dose-Response Relationship, Drug; dried milk; food analysis; food contamination; Food Contamination - analysis; Food Handling - methods; Food industries; food processing; food storage; Fundamental and applied biological sciences. Psychology; Humans; Milk - chemistry; Milk and cheese industries. Ice creams; pasteurization; processing stages; skim milk; spray drying; storage time; Time Factors; Toxin; Aflatoxin M1; Warehousing; Dried milk; Dairy product; Food preservation; Concentration; Skimmilk
• ISSN: 0362-028X; 1944-9097
• DOI: 10.4315/0362-028x-69.3.682

In this study, skim milk powder was produced from cow's milk contaminated artificially with aflatoxin M1 (AFM1) at two different levels, 1.5 and 3.5 microgram/liter (ppb), and the effects of process stages on the AFM1 contents were investigated. Pasteurization, concentration, and spray drying caused losses of about 16, 40, and 68%, respectively, in AFM1 content of the milk contaminated with 1.5 microgram/liter AFM1, and losses of 12, 35, and 59%, respectively, in the milk contaminated with 3.5 microgram/liter AFM1. These losses were found to be statisticially significant at the level of P < 0.01. After 3- and 6-month storage periods, AFM1 content of the skim milk powder produced from milk with 1.5 microgram/liter AFM1 decreased by 2 and 5%, respectively, whereas these rates were 2 and 4%, respectively, for the skim milk powders made from milk with 3.5 microgram/liter AFM1 (after adjustment for sample weight). Changes in AFM1 content of milk powder samples were found statistically insignificant (P > 0.05 and P > 0.01) for 3- and 6-month storage periods.