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Subject: PIÑONES × Subject: FRUTOS SECOS ×

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Now showing 1 - 3 of 3
  • Artículo de revista
    Discriminant analysis of Mediterranean pine nuts (Pinus pinea L.) from Chilean plantations by near infrared spectroscopy (NIRS)
    Pinus pinea L. is one of the most important nut species in the world given the high nutritional and culinary value of its seed, the pine nuts, with increasing demand. The objective of this study was to assess the potential of visible and near infrared spectroscopy (VIS þ NIRS) to analyse different sample presentations and to discriminate geographical origins of Mediterranean pine nut grown in Chile. Pine nuts were collected from 76 adult trees in three growth macrozones previously defined for stone pine in Chile. Original spectroscopic data were obtained by means of a Foss NIRSystems 6500 SYII spectrophotometer using a transport module. Reflectance was employed in the wavelength range of 400e2500 nm. The best means of sampling for the pine nuts used in this study were also studied. After analysing the spectroscopic data, discriminant models were obtained by means of discriminant partial least square (DPLS) with all samples. For the three macrozones previously identified, 87.8% of samples was correctly classified in the cross validation stage with the best model for pine nuts spectra analysis, obtained with shelled intact pine nuts. Results indicate that NIRS technology is capable of differentiating between pine nut samples of different geographical origins with errors ranging between 12.2 and 9.2%, and demonstrate the potential of VIS þ NIRS technology as a rapid and accurate method for predicting the geographical origin of Mediterranean pine nuts.
    Loewe Muñoz, Verónica-Navarro-Cerrillo, Rafael María-García-Olmo, Juan-Riccioli, Cecilia-Sánchez-Cuesta, Rafael
    2017
  • Artículo de revista
    Mediterranean Pinus pinea L. nuts from Southern Hemisphere provenances
    Stone pine nuts, the most expensive dry fruit worldwide, have been characterized mostly for the main producer countries, located in the Northern Hemisphere. A proximate composition analysis of pine nuts harvested from seven areas located in the Southern Hemisphere (Argentina, Australia, Chile and New Zealand) was performed. Pine nuts showed significant differences in dietary fiber and minerals, probably due to the different climate and environmental conditions, confirming the species’ plasticity and adaptability. Australian pine nuts showed a different profile, with the highest values for protein, lipids and ashes, and the lowest for dietary fiber. Studied pine nuts showed values comparable to the ones reported for the species in its native habitat. Results confirmed that high-quality Mediterranean pine nuts might be produced in the areas included in this study, with practical implications for stone pine cropping in non-native habitats and for the later marketing of pine nuts.
    Loewe Muñoz, Verónica-Noel, David
    2021
  • Artículo de revista
    Chemical composition of pine nut (Pinus pinea L.) grown in three geographical macrozones in Chile
    El piñón de pino mediterráneo es reconocido por su elevado valor nutricional y saludable. El objetivo del trabajo fue analizar la composición de piñones de Pinus pinea L. cultivados en tres macrozonas geográficas de Chile. Se realizó análisis proximal, minerales, composición de ácidos grasos, fitoesteroles, tocoferoles, vitamina C, compuestos fenólicos y capacidad antioxidante. El principal componente fue grasa, seguida de proteína. El fitoesterol predominante fue β-sitosterol, y el principal isómero de vitamina E fue γ-tocoferol . Los polifenoles alcanzaron un promedio de 0.34±0.05 mg GAE/g. La vitamina C y ORAC fueron 27.7±1.4 mg/kg y 8.54±0.03 μmol TE/g, respectivamente. El ácido graso más abundante fue el linoleico, seguido del oleico. La composición química de piñones de pino cultivados en diferentes macrozonas chilenas muestra buenas propiedades nutricionales y potenciales beneficios saludables.
    Lutz, Mariane-Álvarez, Katherine-Loewe Muñoz, Verónica
    2017