Aceite de Lupinus mutabilis obtenido por prensa expeller: Análisis de rendimiento, caracterización fisicoquímica, capacidad antioxidante, ácidos grados y estabilidad oxidativa

The oil of debittered and dehulled grains from two Andean lupins (Lupinus mutabilis) from Peru, Andenes and Común, was extracted by expeller press. The extraction yield and the proximal composition of both varieties were assessed. The oil and the cake, as well as the defatted flour from the variety with the highest extraction yield, were characterised for physico-chemical properties, total polyphenol content and antioxidant capacity. The oil shelf-life at 25 °C was extrapolated by Rancimat test. Andenes presented an oil yield of 22.1% (vs. 18.4% of Común), CIELAB colour coordinates of L* = 36.5, a* = 2.2, b* = 20, refractive index and density at 25 ºC of 1.469 and 0.903 g/mL, acid number of 3.2 mg KOH/g, free fatty acids content of 1.6%, peroxide number of 2.7 meqO2/kg, p-anisidine number of 1.3, unsaponificable content of 58%, total antioxidant capacity 21.4 µmol TE/g and total polyphenol content of 7.0 mg AGE/100 g. The predominant fatty acid, tocopherol and phytosterol in the oil were oleic acid (56.2%), γ-tocopherol (555 mg/kg) and β-sitosterol (41900 mg/100 g), respectively. The oil shelf-life at 25 ºC was 2.7 years. The Lupinus mutabilis oil extracted by expeller presented an acceptable quality with a lower environmental negative impact than the oils obtained by solvent extraction.Se extrajo por prensa expeller el aceite de los granos desamargados y descascarados de las variedades peruanas de tarwi (Lupinus mutabilis “Común” y “Andenes”). Se evaluó el rendimiento de extracción y, composición proximal de ambas variedades. Se caracterizaron propiedades fisicoquímicas, contenido total de polifenoles y capacidad antioxidante del aceite, la torta y la harina desengrasada para la variedad con el mayor rendimiento de extracción. Se extrapoló el tiempo de vida útil del aceite a 25 ºC por el test Rancimat. La variedad andenes presentó un rendimiento de 22,1% m/m (frente al 18,4% m/m de la variedad Común), color CIELAB L*= 36,5; a*= 2,2; b* = 20, índice de refracción a 25 ºC de 1,469, densidad a 25 ºC de 0,903 g/mL, índice de acidez de 3,2 mg KOH/g, ácidos grasos libres de 1,6% m/m, índice de peróxidos de 2,7 meq O2/kg, índice de p-Anisidina de 1,3, contenido de insaponificables del 58,0% m/m, capacidad antioxidante ABTS total de 21,4 µmol TE/g y, contenido de compuestos polifenólicos totales de 7,0 mg AGE/100g. El ácido graso, tocoferol y fitoesterol predominantes en el aceite fueron el ácido oleico (56,2% m/m), el γ-tocoferol (555 mg/kg) y el β-sitosterol (41900 mg/100g), respectivamente. A 25 ºC la vida útil del aceite fue de 2,7 años. El aceite de Lupinus mutabilis extraído por expeller presentó una calidad aceptable, pero con un menor impacto ambiental negativo, en comparación con la extracción de aceites utilizando solventes

Lupinus mutabilis oil obtained by expeller press: Yield, physicochemical characterization, antioxidant capacity, fatty acids and oxidative stability analyses

The oil of debittered and dehulled grains from two Andean lupins (Lupinus mutabilis) from Peru, Andenes and Común, was extracted by expellerpress. The extraction yield and the proximal composition of both varieties were assessed. The oil and the cake, as well as the defatted flour from thevariety with the highest extraction yield, werecharacterised for physico-chemical properties, total polyphenol content andantioxidant capacity. Theoil shelf-life at 25 °C was extrapolated by Rancimat test. Andenes presented an oil yield of 22.1% (vs. 18.4% of Común), CIELAB colour coordinates ofL* = 36.5, a* = 2.2, b* = 20, refractive index and density at 25 ºC of 1.469 and 0.903 g/mL, acid number of 3.2 mg KOH/g, free fatty acids content of1.6%, peroxide number of 2.7 meqO2/kg, p-anisidine number of 1.3, unsaponificable content of 58%, total antioxidant capacity 21.4 μmol TE/g and total polyphenol content of 7.0 mg AGE/100 g. The predominant fatty acid, tocopherol and phytosterol in the oil were oleic acid (56.2%), γ-tocopherol (555 mg/kg) and β-sitosterol (41900 mg/100 g), respectively. The oil shelf-life at 25 ºC was 2.7 years. The Lupinus mutabilis oil extracted by expeller presented an acceptable quality with a lower environmental negative impact than the oils obtained by solvent extraction

Estimation of composition of quinoa (Chenopodium quinoa Willd.) grains by Near-Infrared Transmission spectroscopy

The aim of this study was to develop robust chemometric models for the routine determination of dietary constituents of quinoa (Chenopodium quinoa Willd.) using Near-Infrared Transmission (NIT) spectroscopy. Spectra of quinoa grains of 77 cultivars were acquired while dietary constituents were determined by reference methods. Spectra were subjected to multiplicative scatter correction (MSC) or extended multiplicative signal correction (EMSC), and were (or not) treated by Savitzky-Golay (SG) filters. Latent variables were extracted by partial least squares regression (PLSR) or canonical powered partial least squares (CPPLS) algorithms, and the accuracy and predictability of all modelling strategies were compared. Smoothing the spectra improved the accuracy of the models for fat (root mean square error of cross-validation, RMSECV: 0.3190.327%), ashes (RMSECV: 0.2240.230%), and particularly for protein (RMSECV: 0.5180.564%) and carbohydrates (RMSECV: 0.5420.559%), while enhancing the prediction performance, particularly, for fat (root mean square error of prediction, RMSEP: 0.2480.335%) and ashes (RMSEP: 0.1370.191%). Although the highest predictability was achieved for ashes (SG-filtered EMSC/PLSR: bootstrapped 90% confidence interval for RMSEP: [0.3760.512]) and carbohydrates (SG-filtered MSC/CPPLS: 90% CI RMSEP: [0.6510.901]), precision was acceptable for protein (SG-filtered MSC/CPPLS: 90% CI RMSEP: [0.6500.852]), fat (SG-filtered EMSC/CPPLS: 90% CI RMSEP: [0.4780.654]) and moisture (non-filtered EMSC/PLSR: 90% CI RMSEP: [0.6580.833]).Mr. Encina-Zelada acknowledges the financial aid provided by the Peruvian National Programme of Scholarships and Student Loans (PRONABEC) in the mode of PhD grants (Presidente de La República Grant Number 183308). Dr. Gonzales-Barron wishes to acknowledge the financial support provided by the Portuguese Foundation for Science and Technology (FCT) through the award of a five-year Investigator Fellowship (IF) in the mode of Development Grants (IF/00570)

Effect of partial substitution of wheat flour by quinoa (Chenopodium quinoa Willd.) and tarwi (Lupinus mutabilis Sweet) flours on dough and bread quality

Bread is the main important food product worldwide. In this study, eleven bread formulations were developed by partial substitution of wheat flour with quinoa and tarwi flours, to evaluate the effect on the rheological and pasting properties of mixtures, as well as on the physicochemical and textural properties of the final product. Partial substitution with quinoa flour generated similar thermomechanical and textural properties in the dough, and similar bread technological characteristics related to the control bread (100% wheat). In the case of tarwi, the increase in the concentration of this legume showed a negative effect on the bread quality parameters (specific volume, crumb porosity, textural properties, etc.). A negative technological impact of high percentages of wheat flour substitution by the mixture of both Andean flours was found, but it was contrasted with a positive effect on nutritional quality, particularly evidenced by a high content of proteins and dietary fiber. An optimal formulation considering technological and nutritional quality was obtained, presenting the maximum analyzed substitution level (13.35% quinoa flour and 6.65% tarwi flour). This study showed that these Andean grains are suitable for developing bread of good technological quality and improved nutritional profile, adding value to these underused ancestral flours.Fil: Gutierrez Castillo, Carla. Universidad Nacional Agraria La Molina; PerúFil: Alcázar Alay, Sylvia. Universidad Nacional Agraria La Molina; PerúFil: Vidaurre Ruiz, Julio. Universidad Nacional Agraria La Molina; PerúFil: Correa, María Jimena. Universidad Nacional Agraria La Molina; Perú. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; ArgentinaFil: Cabezas, Dario Marcelino. Universidad Nacional de Quilmes; Argentina. Universidad Nacional Agraria La Molina; PerúFil: Repo Carrasco Valencia, Ritva. Universidad Nacional Agraria La Molina; PerúFil: Encina Zelada, Christian R.. Universidad Nacional Agraria La Molina; Per

Sprouted Andean grains: an alternative for the development of nutritious and functional products

The Andean grains such as quinoa (Chenopodium quinoa), kiwicha (Amaranthus caudatus), kañiwa (Chenopodium pallidicaule), and tarwi (Lupinus mutabilis) are known for their exceptional nutritional properties. However, germination appears as an economical option to modify and even improve the nutritional qualities of grains. This work presents a literature review about the impact of germination on the content of nutrients, bioactive compounds, and antinutrients of Andean grains and their homologues. In addition, the use of sprouted Andean grains to develop cereal-based healthy products is described. Thus, this work provides an updated reference framework of this growing area of study.Fil: De La Cruz Yoshiura, Shigeki. UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (UNALM);Fil: Vidaurre Ruiz, Julio. UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (UNALM);Fil: Alcázar Alay, Sylvia. UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (UNALM);Fil: Encina Zelada, Christian R.. UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (UNALM);Fil: Cabezas, Dario Marcelino. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (UNALM);Fil: Correa, María Jimena. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigación y Desarrollo en Criotecnología de Alimentos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Centro de Investigación y Desarrollo en Criotecnología de Alimentos; ArgentinaFil: Repo Carrasco Valencia, Ritva. UNIVERSIDAD NACIONAL AGRARIA LA MOLINA (UNALM)