The metabolic profile of lemon juice by proton HR-MAS NMR: the case of the PGI Interdonato Lemon of Messina

Abstract

We have studied by means of High Resolution Magic Angle Spinning Nuclear Magnetic Resonance (HR-MAS NMR) the metabolic profile of the famous Sicilian lemon known as 'Interdonato Lemon of Messina PGI'. The PGI Interdonato Lemon of Messina possesses high organoleptic and healthy properties and is recognised as one of the most nutrient fruits. In particular, some of its constituents are actively studied for their chemo-preventive and therapeutic properties. In this paper, we have determined by means of HR-MAS NMR spectroscopy the molar concentration of the main metabolites constituent the juice of PGI Interdonato Lemon of Messina in comparison with that of the not-PGI Interdonato Lemon of Turkey. Our aim is to develop an analytical technique, in order to determine a metabolic fingerprint able to reveal commercial frauds in national and international markets.

Fatty acids determination in Bronte pistachios by gas chromatographic method

“…Pistacia vera L. belonging to the Anacardiaceae family, is a small tree originally from Central Asia and the Middle east (Monastra et al 1987). The Mediterranean basin around the etna volcano is ideal for the cultivation of vegetable products and different studies on chemical characterisation of typical sicilian products have been conducted (Mallamace et al 2014;Cicero et al 2015;Corsaro et al 2015;Dugo et al 2015;Salvo et al 2015;Tuttolomondo et al 2015;Cacciola et al 2016). A high quality pistachio cultivar, which represents the 80% of the Italian production, is produced in Bronte (Sicily).…”

Statistical Analysis of Mineral Concentration for the Geographic Identification of Garlic Samples from Sicily (Italy), Tunisia and Spain

“…In the literature, there are many scientific reports of ICP-MS analysis for the determination of mineral concentration in food matrices including garlic [5,6,7,8,9,10,11]. Furthermore, nowadays there is great attention paid to the discrimination of protected foodstuffs [12,13,14]. We evaluated the statistically significant differences among the garlic samples using chemometric analyses.…”

Traceability of Opuntia ficus‐indica L. Miller by ICP‐MS multi‐element profile and chemometric approach

“…In particular, we used: RF power, 1500 W; plasma gas flow rate, 15 L min −1 ; auxiliary gas flow rate, 0.9 L min −1 ; carrier gas flow rate, 1.1 L min −1 ; helium collision gas flow rate, 4 mL min −1 ; spray chamber temperature, 2 ∘ C; sample depth, 9 mm; sample introduction flow rate, 1 mL min −1 ; nebulizer pump, 0.1 RPS; extract lens 1 voltage, 1.5 V. The instrument was used in no-gas mode for Mn, Pb, Zn, Mg, Ca, Na, K, and in helium mode for Ni, As, Se, Cd, Fe, Cu, to remove spectral interference. Monitored isotopes, chosen to maximize sensitivity and to minimize interferences due to the matrix, were 24 Mg, 23 Na, 39 Calibration standards were prepared at concentration ranges suitable for the analytes investigated: from 0.020 to 5 μg g −1 for the elements As, Cd, Pb, Se Cu, Fe, Ni; from 0.050 to 20 μg g −1 for Na, Mn, Zn; from 0.5 to 100 μg g −1 for Ca, K, Mg, preliminarily diluted (1:50).…”

“…18,19 The identification of geographic provenience of food represents, first, a current and global issue for consumers, who show increasing interest in the traceability of food supply, and, second, an important quality parameter to bring about the protected denomination of origin for some foods. 20 Several techniques are applied to the study of food quality and traceability, such as foodomic methods, chromatographic and spectroscopic techniques, among others, [21][22][23][24][25] but multi-elemental analysis (MEA) is the most commonly used. 26 MEA, in fact, represents an effective analytical approach to individuate the geographical origin of food products but also to analyze some different environmental and geological features, such as soil type, pH, porosity, humidity, rainfall and temperature, able to influence the element profile and provide the greatest discriminating power.…”