Incidence of Aflatoxin M1 in Thai Milk Products
1Department of Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Henri Dunand Road, Bangkok 10330, Thailand.
Abstract:
Two hundred seventy samples of raw milk and off-the-shelf milk products were examined for aflatoxin M1 content using a radioimmunoassay. Aflatoxin M1 was found in the majority of milk samples except 1 sample of raw milk and 11 samples of imported powdered milk. All cases of aflatoxin M1 content greater than 0.5 ppb were found in 18% (48) of the samples including raw milk (17/67), pasteurized milk (20/63), ultra high temperature milk (7/60), sterilized milk (3/60), and pelleted milk (1/7). All powdered milk samples were negative for aflatoxin M1 except two samples with less than 0.1 ppb. The positive aflatoxin M1 test results for five of the raw milk samples were confirmed by HPLC.
Insights
Aflatoxin M1 contamination was prevalent in most milk products, with 18% exceeding safety limits. Raw and processed milk samples showed higher contamination than powdered milk, necessitating continued monitoring of dairy products for aflatoxin M1.
Area of Science:
- Food Safety
- Analytical Chemistry
- Toxicology
Background:
- Aflatoxins are toxic metabolites produced by certain fungi.
- Aflatoxin M1 is a major metabolite found in milk from animals exposed to aflatoxin B1.
- Milk and dairy products are significant sources of human exposure to aflatoxin M1.
Purpose of the Study:
- To determine the prevalence and levels of aflatoxin M1 in various milk products.
- To assess the risk posed by aflatoxin M1 contamination in the dairy supply chain.
Main Methods:
- Radioimmunoassay (RIA) was used for initial screening of 270 milk samples.
- High-Performance Liquid Chromatography (HPLC) was employed for confirmation of positive RIA results.
Main Results:
- Aflatoxin M1 was detected in the majority of milk samples analyzed.
- 18% of samples (48/270) exceeded the acceptable limit of 0.5 ppb.
- Raw milk (17/67) and pasteurized milk (20/63) showed significant contamination levels.
Conclusions:
- Widespread aflatoxin M1 contamination in milk products poses a public health concern.
- Powdered milk generally exhibited lower contamination levels compared to raw and liquid milk products.
- Regulatory monitoring and control measures are crucial to ensure milk safety.
More Related Videos
09:21Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
Published on: February 15, 2019
07:38Milk Collection in the Rat Using Capillary Tubes and Estimation of Milk Fat Content by Creamatocrit
Published on: December 16, 2015
Related Concept Videos
01:08Prevalence and Incidence
Prevalence indicates the proportion of individuals in a population who have a specific disease or health...
01:21Types of Reports II: Incident or Occurrence Report
Purposes:
In the healthcare industry, reports play a crucial role in documenting incidents within an agency. The primary objective of these reports is to ensure patient safety, uphold the...
01:11Scalar Product (Dot Product)
The scalar product of two vectors is obtained by multiplying...
01:17Vector Product (Cross Product)
Consider the cross product of two vectors. Imagine rotating the first vector about...
01:21Wood Products
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
01:29Dot Product
In engineering, the dot product of any two vectors is the product of the magnitudes of the vectors and the cosine of the angle between them. It is denoted by a dot symbol between the two vectors.
Consider a vehicle pulling an object along the ground using a rope. If the rope makes an angle with the horizontal axis, the work done can be calculated using the dot product of the force applied and the object's displacement.
The dot...