Abstract
The aim of this study was to analyze the effect of dehulling white lupine seeds (Lupinus albus, cultivar Amiga) on the raw chemical composition and nutritional profile of lipids. There was no significant differences (p ˃ 0.05) between whole and dehulled lupine seeds in respect of their content in dry matter, ether extract, crude ash and nitrogen-free extract. However, the dehulled lupine seeds had a higher (p ˂ 0.05) crude protein level (51.69% of DM) than whole seeds (43.16% of DM), and a lower (p ˂ 0.05) crude fiber content (4.35% of DM) compared to that of whole seeds (14.15% of DM). The fatty acids profile is not affected (p ˃ 0.05) by the dehulling process. Oleic acid (C18:1 cis-9) is the main fatty acid in lupine seeds, and the level of monounsaturated fatty acids (MUFA) is slightly higher in whole seeds. The n-3 / n-6 report is adequate in both whole (0.88) and dehulled (0.94) seeds, and the favorable polyunsaturated index (PI) indicates the high content of polyunsaturated fatty acids (PUFA), which indicates that lupine seeds are a valuable source of essential fatty acids. Also, lupine seeds are characterized by favorable values of the thrombogenic (0.18) and atherogenic (0.14) indexes, and an appropriate hypocholesterolemic/hypercholesterolemic index value, features considered important for human health and animal nutrition.
Highlights
In the Central and Eastern Europe, lupine species (Lupinus spp.) from low-alkaloid varieties are widely cultivated and are considered an optimum alternative to reduce the dependence on soybeen imports [1]
The UFA/saturated fatty acids (SFA) report highlights the degree of lipids unsaturation, and our results reveal favorable values for lupine seeds (LWS and Lupin Dehulled Seeds (LDS))
According to the results obtained in this study, dehulling lupine seeds influences (p 0.05) the level of crude protein and crude fibre, but does not affect (p0.05) the content of ether extract, crude ash and nitrogen-free extract
Summary
In the Central and Eastern Europe, lupine species (Lupinus spp.) from low-alkaloid varieties are widely cultivated and are considered an optimum alternative to reduce the dependence on soybeen imports [1] This is due to the suitability for sustainable production, nutritional qualities of seeds, potential health benefits and well acceptability to the consumers [2]. New sweet lupine cultivars from low-alkaloid varieties (less 0.02%) do not require heat treatment of the seeds in order to eliminate thermolabile compounds, like in the case of soybeans, because of their low content of protease inhibitors, tannins, saponins, lectins. It does not raise ethical issues, as they do not originate from genetically modified organisms [6, 7]. The high content of cellulose and non-starch polysaccharides represent antinutritional factors for monogastric animals [8]
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