Improving the prediction of the fatty acid profile of olive oils by considering statistically relevant harvests and agro-climatic variables.

The regression models using only Raman spectral information are clearly improved by the consideration of harvesting time and agro-climatic data, a useful result as trade standard applying to olive oils limits values for disaggregated fatty acids to authenticate olive oils. Nevertheless, the effect (or the statistical relevance) of these variables depends on the specific type of fatty acid, geographical region (province) or olive variety. © 2019 Society of Chemical Industry.