Elemental composition of Brazilian rice grains from different cultivars and origins

Mineral profile exploratory analysis for rice grains traceability

“…In this present study, 25 elements and As org and As inorg were measured in 70 rice grain, and husk samples from two varieties (IRGA424 and Puita) from nine different cities in the state of Rio Grande do Sul. The mean concentrations of major elements were similar from those obtained in previous studies of Brazilian rice (Borges et al, 2015;Kato et al, 2018). Inorganic composition and characterization of soil samples were also determined, and the obtained results were similar to previous studies results (Althaus et al, 2018).…”

“…4) was closely matched with the As rice grain and husk content, and therefore matched with the quadrant discrimination obtained by F1 × F2 on the grain and husk PCA. Other authors reported the As discriminating power for rice origin (Cheajesadagul et al, 2013;Chung et al, 2018;Kato et al, 2018).…”

“…No discrimination was obtained among varieties, except IRGA424 variety in Pelotas region. Recently, Kato et al (2018) reported a study of geographical discrimination of rice from 4 regions of the state of Rio Grande do Sul by determining 11 chemical elements (As, Br, Cd, Co, Cs, Fe, K, Mo, Na, Rb and Zn) in 4 different varieties (IRGA424, IRGA424 RI, Guri Inta, Puita Inta). These authors concluded that As, Br, Co, Cs, Na, Rb, and Zn presented potential to be used to distinguish rice grains from different regions, while no discrimination was obtained amongst varieties.…”

“…In one hand, other countries such as Taiwan (Wang, Hsu, & Lu, 2011), Spain (Gonzálvez, Armenta, & Guardia, 2011), Thailand (Kukusamude & Kongsri, 2018) and Italy (Brandolini et al, 2006) traceability of rice is under development, and for some kinds of rice, it has already been adopted. On the other hand, few studies were developed in Brazil (Borges, Gelinsky, Souza, Barbosa, & Batista, 2015;Kato, Fernandes, Bacchi, & Sarriés, 2018;Maione, Batista, Campiglia, Barbosa, & Barbosa, 2016). In all these studies, PCA proved to be a suitable tool to identify geographical origin (Brandolini et al, 2006;Cheajesadagul et al, 2013;Chung, Kim, Lee, & Kim, 2015), to discriminate organic and conventional grains (Borges et al, 2015;Brandolini et al, 2006), to find association maps of rice physiological disorders (Agrama & Yan, 2009).…”

Tracing the Geographical Origin of Thai Hom Mali Rice in Three Contiguous Provinces of Thailand Using Stable Isotopic and Elemental Markers Combined with Multivariate Analysis

“…Therefore, rice has unique elemental profiles reflecting the geochemistry of the soil origin [14]. The determination of rice's geographical origin can be performed using a combination of chemometric approaches with several reliable analytical techniques such as instrumental neutron activation analysis (INAA) [2,15,16], isotope ratio mass spectrometry (IRMS) [13,[17][18][19][20], inductively coupled plasma optical emission spectrometry (ICP-OES) [21][22][23][24][25], inductively coupled plasma mass spectrometry (ICP-MS) [1,23,24,[26][27][28][29], LA-ICP-MS [30], and high resolution inductively coupled plasma mass spectrometry (HR-ICP-MS) [5,25,31]. However, the combination of multi-elemental and isotopic techniques with chemometric approaches has been developed for tracing the geographical origin of foodstuffs [32].…”