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Fig. 2 | Plant Methods

Fig. 2

From: Using Near-infrared reflectance spectroscopy (NIRS) to predict glucobrassicin concentrations in cabbage and brussels sprout leaf tissue

Fig. 2

Frequency distributions of the glucobrassicin (GBS) concentrations on a fresh weight basis (µmol·100 g−1) and a dry weight basis (µmol·g−1) for the training (n = 68) and testing (n = 24) data subsets used for calibration and cross validation respectively. Samples were derived from cabbage and Brussels sprouts leaf tissue purchased from grocery stores and natural food cooperatives in Minneapolis and Saint Paul, MN. Vegetables were purchased between August and October, 2019. Concentrations were determined using high-performance liquid chromatography and UV-spectroscopy. Plots show the number of samples within a range of GBS concentrations on a fresh weight basis from the a training data set and b the testing data set and frequency distributions of GBS concentrations on a dry weight basis from the c training data set and d the testing data set

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Plant Methods

ISSN: 1746-4811