Characterization and effect of year of harvest on the nutritional properties of three varieties of white lupine (Lupinus albus L.)
2015
Calabrò, Serena | Cutrignelli, Monica I | Lo Presti, Vittorio | Tudisco, Raffaella | Chiofalo, Vincenzo | Grossi, Micaela | Infascelli, Federico | Chiofalo, Biagina
BACKGROUND: Three cultivars of Lupinus albus L. (Lutteur, Lublanca and Multitalia) were assessed for proximate composition, fatty acids, alkaloids and in vitro fermentation characteristics over three harvest years. RESULTS: The chemical composition varied greatly during the three harvest years. Crude protein content ranged from 353 to 456 g kg⁻¹ dry matter (DM), neutral detergent fiber content from 209 to 321 g kg⁻¹ DM and lignin content from 3.0 to 63.9 g kg⁻¹ DM. Lublanc showed the highest crude protein (417 g kg⁻¹ DM) and lignin (35 g kg⁻¹ DM) contents. High levels of lipids (89.9 g kg⁻¹ DM) and starch (93.3 g kg⁻¹ DM) were found in all samples. Alkaloid content ranged from 3.63 to 165 mg per 100 g. Lutteur and Lublanc showed more favorable n‐3/n‐6 polyunsaturated fatty acid ratios (from 0.44 to 0.73) and lower values of the anti‐quality factor ‘erucic acid’ (from 5.8 to 20.9 g kg⁻¹) than Multitalia. Lutteur showed higher degradability (897 g kg⁻¹), gas production (330 mL g⁻¹ organic matter (OM)) and volatile fatty acid production (117 mmol g⁻¹ OM) than the other varieties. CONCLUSION: The present data suggest L. albus L. cv. Lutteur to be a promising crop as food thanks to its high nutritive traits and most constant yield over time. © 2014 Society of Chemical Industry
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