Recently, there is a growing interest in the recovery of agri-food waste in the context of circular economy. In this study, the nutritional, phytochemical and biological features of cold-pressed seed oil (SO) and the hemp meal (HM) of two non-psychotropic Cannabis sativa varieties (Uso 31 and Futura 75) were evaluated. Cannabis SOs showed a high total phenols and flavonoids content, which were confirmed by LC-DAD-MS analysis with rutin as the most abundant compound (56.93-77.89 µg/100 FW). Moreover, they have also proved to be a rich source of tocopherols (81.69-101.45 mg/100 g FW) and of well-balanced ω-6 to ω-3 fatty acid ratio (3:1) with USO 31, which showed the best phytochemical profile and consequently the best antioxidant activity. HMs still retain part of the phytochemicals identified in the SOs (polyphenols, tocopherols and fatty acids, whose ω-6/ω-3 ratio is preserved) and a modest antioxidant activity. Moreover, they show a very interesting nutritional profile being very rich in proteins (29.88-31.44 g/100 g FW), fibers (18.39-19.67 g/100 g), essential and non-essential aminoacids. Finally, HMs showed a restrained amount of anti-nutritional factors (trypsin inhibitors, phytic acid and condensed tannins) suggesting a promising re-use of these products in the nutraceutical field.
Comparative evaluation of phytochemical profile and antioxidant properties of two hemp seed oil and their byproducts
Cristina Occhiuto;Gianluigi Aliberto;Domenico Trombetta;Clara Circosta;Antonella Smeriglio
2022-01-01
Abstract
Recently, there is a growing interest in the recovery of agri-food waste in the context of circular economy. In this study, the nutritional, phytochemical and biological features of cold-pressed seed oil (SO) and the hemp meal (HM) of two non-psychotropic Cannabis sativa varieties (Uso 31 and Futura 75) were evaluated. Cannabis SOs showed a high total phenols and flavonoids content, which were confirmed by LC-DAD-MS analysis with rutin as the most abundant compound (56.93-77.89 µg/100 FW). Moreover, they have also proved to be a rich source of tocopherols (81.69-101.45 mg/100 g FW) and of well-balanced ω-6 to ω-3 fatty acid ratio (3:1) with USO 31, which showed the best phytochemical profile and consequently the best antioxidant activity. HMs still retain part of the phytochemicals identified in the SOs (polyphenols, tocopherols and fatty acids, whose ω-6/ω-3 ratio is preserved) and a modest antioxidant activity. Moreover, they show a very interesting nutritional profile being very rich in proteins (29.88-31.44 g/100 g FW), fibers (18.39-19.67 g/100 g), essential and non-essential aminoacids. Finally, HMs showed a restrained amount of anti-nutritional factors (trypsin inhibitors, phytic acid and condensed tannins) suggesting a promising re-use of these products in the nutraceutical field.Pubblicazioni consigliate
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