Detection of Pesticides and Other Contaminants in Horticultural Crops

The presence of pesticide residues and other contaminants poses a significant risk to both human health and the environment, particularly in horticultural crops. Thus, there is a pressing need to develop effective detection methods to ensure the safety and quality of food. Given that fruits and vegetables are often consumed raw, the potential health implications of these residues are especially concerning. Consequently, it is imperative to regularly employ various analytical techniques to scrutinize fruits and vegetables for pesticide residues and other pollutants. Understanding maximum residue levels (MRLs) is crucial for determining contamination levels in produce. This chapter outlines current detection technologies utilized for examining pollutants in horticultural crops, focusing on pesticide residue detection. Techniques such as mass spectrometry coupled with chromatography (including liquid and gas chromatography) have been instrumental in identifying and quantifying pesticide residues with remarkable sensitivity and selectivity. However, these methods necessitate expensive equipment, skilled personnel, and time-intensive sample preparation. To enhance detection accuracy and streamline analysis, high-selectivity and sensitivity methods such as enzyme inhibition, immunoassays, and DNA hybridization-based biosensors are employed. Integration of different detection technologies with advanced data analysis techniques such as chemometrics and machine learning algorithms facilitates improved detection accuracy and expedites the analysis of large datasets. Consequently, these technologies significantly reduce the time and cost associated with standard laboratory analysis, enabling quick screening of a large number of samples. In recent years, there has been notable progress in the development and application of detection technologies for investigating pollutants, particularly pesticide residues in horticultural crops. By combining traditional analytical methods with rapid, nondestructive techniques, biosensors, and advanced data analysis tools, the identification of pesticide residues and other contaminants has become more accurate and efficient. These advancements not only safeguard food safety and quality but also promote environmentally friendly gardening practices and protect public health.