A rapid and non-invasive method for authenticating the origin of pistachio samples by NIR spectroscopy and chemometrics

Abstract

Elsevier Vitale, R.; Bevilacqua, M.; Bucci, R.; Magrì, A.; Magri, A.; Marini, F. (2013). A rapid and noninvasive method for authenticating the origin of pistachio samples by NIR spectroscopy and chemometrics. Chemometrics and Intelligent Laboratory Systems. 121:90-99. doi:10.1016/j.chemolab.2012.11.019. sensitivity and specificities, the only exception being the two categories Turkey and Iran, whose 36! heterogeneity resulted in a poorer specificity (anyway higher than 80%). In particular, the results 37!obtained for the samples coming from Bronte (Sicily), the only PDO pistachio production in Europe 38! -95.5% non error rate in PLS-DA, 90% sensitivity and 97% specificity in SIMCA, as evaluated on 39! the external test set -are very promising from the viewpoint of the authentication of this product. 40!In general, the results show that the coupling of NIR spectroscopy to chemometric classification 41! techniques can be a valuable tool for tracing the origin of pistachio nuts, providing a reliable 42! authentication in a rapid, relatively cheap and non invasive way.

Near-infrared spectroscopy for detection of hailstorm damage on olive fruit

“…However, reflectance in that region is also correlated with aliphatic esters, alkyl groups and alkenes ($1100-1375 nm), water and alcohol ($1460 nm) as well as fatty acids and triglycerides ($1600-1850 nm) (Hourant et al, 2000;Fernández-Espinosa, 2016;Jha, 2016;Schaich, 2016). Finally, the 1920 nm and 2000-2220 nm bands can be associated with the OÀ ÀH bond and the combination of CÀ ÀC/CÀ ÀH, CÀ ÀH/C¼O, and NÀ ÀH/C¼O groups, which are associated with water, lipids and proteins (Workman and Weyer, 2008;Vitale et al, 2013). Differences between classes in reflectance in the water, phenols, protein/amino acid regions could be related to external damage as consequences of water loss, oxidative processes, microbial growth and/or fruit processes to repair damaged tissue.…”

Fast UPLC/PDA determination of squalene in Sicilian P.D.O. pistachio from Bronte: Optimization of oil extraction method and analytical characterization

“…the Sicilian municipalities of Bronte, Adrano and Biancavilla), and production, the harvesting and labelling practices; thus protecting not only product but also consumer. Annual production of pistachio from Bronte with its 30 tons, which represents 80% of the total Sicilian production (Gentile et al, 2007), is very poor in comparison to Asian and American ones; however, it is compensated by the very high quality of the product (Vitale et al, 2013).…”

“…The pistachio tree is mainly cultivated in Iran, Turkey, USA, Greece, Syria, Italy and Spain. In Italy, only a single pistachio variety (Bianca) is grown (Bellomo & Fallico, 2007;Fabbri & Valenti, 1998;Vitale et al, 2013) and its cultivation is concentrated mainly around Mount Etna, in the area of Bronte (Sicily), where the lava-rich soil and climate allow the production of a nut with intense green colour and aromatic taste that is very appreciated for its high quality in international markets. Given its singular traits, its nutritional and organoleptic properties, as well as its gorgeous taste and smell, on 9 June 2009 the European Union (EU) publishes the specification which gives to the ''Green pistachio of Bronte" the Protected Designation of Origin (P.D.O.)…”

Application of near infrared spectroscopy for authentication of Picea abies seed provenance

“…The absorption bands typically observed in the NIR region correspond to bonds containing light atoms, such as C-H, O-H, N-H and S-H, which in turn are the major molecular moieties in all biological samples. Previous studies have demonstrated the capability of NIR spectroscopy combined with multivariate modelling for differentiating among sets of similar biological materials, including identification of seed sources and parents of Scots pine (Tigabu et al 2005), geographical origin of olive oils (Woodcock et al 2008;Casale et al 2009;Bevilacqua et al 2012) and pistachio (Vitale et al 2013), as well as discrimination of pure and hybrid larch seeds (Farhadi et al 2016). To our knowledge, there is no study that attempted to apply NIR spectroscopy for authenticating P. abies seed provenances.…”