High-resolution magic angle spinning nuclear magnetic resonance in foodstuff analysis

Nuclear Magnetic Resonance (NMR) Spectroscopy in Food Science: A Comprehensive Review

“…NMR has the ability to serve as an invaluable tool for the compositional analysis of foods, not only due to its ability to provide important information for structural elucidation, but also for its quantitative nature. NMR has been effectively used for the analysis of several classes of compounds including lipids (Dais & Hatzakis, ; Monakhova & Diehl, , ; Siddiqui et al., ; Tsiafoulis et al., ), carbohydrates (Kazalaki et al., ; Merkx, Hong, Ermacora, & van, ; Singh, Kumar, Srivastava, Deepak, & Singh, ; Spraul et al., , ), amino acids (Belton et al., ), alcohols (Hatzakis, Archavlis, & Dais, ; Nilsson et al., ), organic acids (Berregi, del Campo, Caracena, & Miranda, ), polyphenols (Agiomyrgianaki & Dais, , ; Charisiadis, Exarchou, Troganis, & Gerothanassis, ), vitamins (Ackermann et al., ; Dais et al., ; Shumilina, Ciampa, Capozzi, Rustad, & Dikiy, ; Vaysse et al., ), terpenes (Dais, Plessel, Williamson, & Hatzakis, ), phospholipids (Hatzakis, Koidis, Boskou, & Dais, ; Kaffarnik, Ehlers, Gröbner, Schleucher, & Vetter, ), colorants (Englert, ; Scotter, ; Venkatachalam et al., ; Berké, Chèze, Vercauteren, & Deffieux, ), and contaminants (Lachenmeier et al., ) in a variety of foods, such as oils (Dais & Hatzakis, ; Siddiqui et al., ), beverages (Kidrič, ; Ryu, Koda, Miyaka, & Tanokura, ; Santos, Fonseca, Lião, Alcantara, & Barison, ; Zurriarrain et al., 2015), meats (García‐García et al., ), dairy products (Gangwar, Singh, & Deepak, ; Hu, Furihata, Ito‐Ishida, Kaminogawa, & Tanokura, ; Maher & Rochfort, ; Murgia, Mele, & Monduzzi, ; Scano et al., ; Tociu et al., ), and infant formula (Zhao et al., ). For the structural characterization of various food components, the application of 2D techniques is often required.…”

“…An excellent review about HR‐MAS applications in food analysis has been recently published by Santos et al. and provides detailed information about this promising technique (Santos et al., ).…”

Potential uses of LF‐NMR and MRI in the study of water dynamics and quality measurement of fruits and vegetables

“…NMR has been useful in evaluating the interior quality of fruits and vegetables (Arunyanart, Siripatrawan, Makino, & Oshita, ; Kotwaliwale, Curtis, Othman, Naganathan, & Subbiah, ). These studies did not merely demonstrate the use of NMR and MRI, but also the application of monitoring changes in foods from preharvest to postharvest storage and processing (Prasad, ; Santos, Fonseca, Lião, Alcantara, & Barison, ). Qiao, Tian, Song, He, and Song () applied LF‐NMR and MRI to analyze and detect the decayed blueberries during postharvest through establishing the BPNN model based on the features extracted from relaxation spectrum and images.…”

Important issues in plant tissues analyses by HR‐MAS NMR

“…It is based on the molecular mobility in the swollen samples, associated with fast spinning, from a rate of a few hundred hertz up to several kilohertz, at the magic angle (54.74°). This leads to drastically reduced line broadening effects due to dipolar couplings and chemical shift anisotropy, thus resulting in HR‐NMR spectra very similar to those obtained in solution . Moreover, HR‐MAS NMR allows the acquisition of quantitative NMR (qNMR) data for multiple components in a unique sampling without or with only minimal sample pretreatment .…”

“…biopsies) and monitoring treatment in brain, prostate, breast, and cervical cancers . Moreover, it has been especially used in the analysis of foodstuffs, such as the identification of lipids, carbohydrates, and small metabolites . This technique has several advantages in metabolomic studies, as it permits plant genotypes to be differentiated such as genetically modified organisms, different phenotypes, and chemotaxonomy identification .…”