Acid Detergent Fiber Analysis in Oilseed Brassicas by Near-Infrared Spectroscopy

Abstract

The potential of near infrared spectroscopy (NIRS) for determining the acid detergent fiber (ADF) in the seed of oilseed Brassica (fam. Brassicaceae) was assessed. One hundred and fifty accessions belonging to the species Indian mustard (Brassica juncea L. Czern.& Coss.), Ethiopian mustard (B. carinata A. Braun) and rapeseed (B. napus L.) were scanned by NIRS as intact and ground seed, and their ADF values were regressed against different spectra transformations by modified partial least squares regression. The coefficients of determination in the external validation (r(2)) for intact and ground seed were 0.83 and 0.85, respectively. The standard deviation to standard error of prediction ratio and range to standard error of prediction ratio were 2.40 and 10.75 for intact seed and 2.62 and 11.76 for ground seed. No significant differences in the prediction were found for both sample presentations. Effects of the C-H and O-H groups of lipids and water, respectively, as well as protein and chlorophyll, were most important in modeling these equations.

Defence mechanisms of Brassicaceae: implications for plant-insect interactions and potential for integrated pest management. A review

“…The worldwide production of cabbages and kale-like brassicas in 2007 was 69 Mio t/3.1 Mio ha area, rapeseed 50 Mio t/30.2 Mio ha, cauliflowers and broccolis 19 Mio/1.0 Mio ha, and mustard seed 0.4 Mio t/0.7 Mio ha (FAOSTAT, 2009). Due to the increased oilseed production of B. rapa, B. juncea, B. napus and B. carinata in the past three decades, the oilseed brassicas have become an important source of oil and protein among cultivated brassicas (Font et al, 2003). Oilseed Brassica species are the major oilseed crops cultivated in India and around the world, and India produces about 11.3% of the world's rapeseed mustard (Damodaram and Hegde, 2002 as cited by Chattopadhyay et al, 2005).…”

Análisis del contenido en minerales en nabizas y grelos (Brassica rapaL. var.rapa) mediante reflectancia en el infrarrojo cercano

“…En segundo lugar se realizó una evaluación de las ecuaciones de calibración seleccionadas con muestras que no intervinieron en la calibración (colectivo de validación, n = 69 en nuestro trabajo), proceso que se denomina validación externa (Bagchi, Sharma, & Chattopadhyay, 2016;Font, Del Río, Fernández, & De Haro, 2003;Kim, Lee, Shin, & Shin, 2014;Lee, Hwang, Lee, & Choung, 2014;Martínez et al, 2014;Sánchez, Garrido-Varo, Guerrero, & Pérez-Marín, 2013;Shenk & Westerhaus, 1991). Las estadísticas de la validación externa incluyen el coeficiente de determinación de la validación (r 2 ve ), el error estándar de predicción (SEP), el RPD ve (que es la relación SD/SEP) y el RER (Williams & Sobering, 1996) que es la relación entre el intervalo de los datos de cada mineral y el error estándar de la predicción.…”

“…En base a los valores de la relación SEP/SEL se puede decir que la precisión de las ecuaciones para los distintos minerales se puede clasificar como de excelente exactitud para K (SEP/SEL = 1,65), Ca (SEP/ SEL = 1,48), Zn (SEP/SEL = 1,38) y Cu (SEP/SEL = 1,79); de buena exactitud para P (SEP/SEL = 3,58), Mg (SEP/SEL = 2,29), Fe (SEP/SEL = 2,71) y Mn (SEP/SEL = 2,36); y de baja exactitud para Na (SEP/SEL = 5,25) (Font et al, 2003). Los resultados obtenidos tanto en la validación cruzada como en la validación externa confirman la fiabilidad y capacidad de las ecuaciones de calibración desarrolladas para predecir de forma exacta y precisa el contenido en Ca y Fe en muestras de nabizas y grelos a partir de sus espectros de reflectancia en el infrarrojo cercano.…”

A Review of Optical Nondestructive Visual and Near-Infrared Methods for Food Quality and Safety

“…The coefficients of determination were over 0.8 for all other except for 4-hydroxyglucobrassicin which was only 0.33. Font et al [102] measured intact and ground seed of Indian mustard, Ethiopian mustard, and rapeseed and applied modified partial least-square regression to combine near-infrared spectra and acid detergent fiber values. The sample type did not have any significance on the evaluation.…”