Cod liver oil is rich in polyunsaturated fatty acids (PUFAs) like EPA and DHA, which support good cold flow properties but reduce oxidative stability of the biodiesel. This composition enables efficient conversion into biodiesel, but the final fuel may require antioxidants for longer shelf life. The high iodine value can also slightly reduce cetane numbers. The GlobeCore USB plant ensures precise reaction conditions, enabling high conversion rates while maintaining fuel quality through optional additives or blending with more saturated biodiesels.