Nearly 70% of avocado oil samples were rancid or mixed with other oils, according to a US study

Researchers at the University of California, Davis, studied private label avocado oils. Almost 70% of the samples were rancid or mixed with other oils. Quality and purity results of avocado oils Thirty-six samples of avocado oils purchased from 19 different retail stores in the US and Canada were included in the study. The study concerned products sold under private labels. 23 out of 36 samples were found to be below quality standards and 25 out of 36 were found to be below purity standards. Quality referred to whether the oil was fresh or rancid due to aging, heat, exposure to light. For purity, the researchers examined the profiles of fatty acids, sterols and other components that set avocado oil apart from other oils. The origin of products, the impact of price on quality and purity Cheap products were more likely to be adulterated, although high cost did not guarantee purity and quality. Most of the oils came from Mexico, but the study also included oils from Spain, France, ...