Maria Valentina Aquilino’s research while affiliated with University of Salento and other places

... It should be noted an excessive amount of pentanoic acid (pink trace in Fig. 7) not referable to the typical oxidized fingerprint of olive oil, suggesting the presence of lipid organic material probably coming from other sources, like a mixture of olive oil with animal bones and charred elements, possibly used for preserving animal meat or for the preparation of medicamenta. In literary sources, in fact, there is evidence of the use of olive oil mixed with calf fat, dry and liquid pine pitch, beeswax and other ingredients to create a poultice used in the treatment of fractures, called Moschione's remedy [31]. Nevertheless, these findings implied that investigated amphorae (Spinella type and Keay LII type), may have contained vegetable lipid material such as olive oil, according to mono-carboxylic acids profiles observed in the pottery samples of such category. ...

Reference:

Study of oxidation products in aged olive oils by GC and HPLC techniques coupled to mass spectrometry to discriminate olive oil lipid substances in archaeological artifacts from ancient Taormina (Italy)