Title Biorefining hemp processing by-products by supercritical CO2, pressurized liquid, and enzyme-assisted extractions for the recovery of value-added ingredients
Authors Imamou H., Mouandhe ; Juriene, Laura ; Venskutonis, Petras R
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Is Part of 3rd COST CA22134 FoodWaStop meeting “Sustainable network for agrofood loss and waste prevention, management, quantification and valorisation”: 5-6 February 2025, Zadar, Croatia: abstract book.. Zadar : University of Zadar. 2025, P4.28., p. 73
Keywords [eng] Valorization ; Agrifood ; Hemp ; Extraction ; Circular economy
Abstract [eng] After the extraction of cannabinoids and oil, the residual hemp herbs (HHBE and HHAE), hulls (HSH) are either discarded or used as fertilizers, while press cake (HPC) is used as protein source. This study aimed at using green technologies such as supercritical CO2 (SFE-CO2), pressurized liquid extraction (PLE), enzyme-assisted extraction (EAE) and food grade solvents to isolate value-added fractions. Antioxidant capacity of the products obtained was evaluated by in vitro assays, while fatty acid, tocopherols and phytosterols, and cannabinoids profiles were analysed by GC or HPLC. SFECO2 increased the amount of protein, moisture, ash, and carbohydrates in all samples, with HPC having the highest protein content. It was also confirmed that hemp by-products are good source of tocopherols and phytosterols. Ultrasound helped in reducing extraction time from 4 hours to 2.5 hours in HSH but did not have a significant effect on other samples. In addition, EAE helped in upcycling low protein samples into high protein products with HPC extract having 69.28±0.55 %. It can be concluded that the characterization of the recovered products demonstrated that hemp byproducts can be upcycled into various value-added products that could be used in various sectors such as functional foods, nutraceuticals and cosmeceuticals.
Published Zadar : University of Zadar
Type Conference paper
Language English
Publication date 2025