Milk is a key element for household food security and provides a stable income to farmers including women, who are usually in charge of taking care of the milk-producing animals in the low-income countries. Currently pathogen growth in milk is managed with refrigeration or with chemicals.
Although bacterial growth in milk is managed with refrigeration in the high-income countries, a high cost of infrastructure and a demand for a permanent electricity supply prevent milk refrigeration in the rural areas in the low-income countries.
Moreover, certain pathogens, for example Listeria monocytogenes, are less sensitive to low temperature; therefore, they can proliferate at refrigeration during transportation and storage.