Journal
ANTIOXIDANTS
Volume 12, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/antiox12071390
Keywords
Cannabis sativa; antioxidant; cannabidiol; cannabigerol; oxidative stress
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Cannabis leaves contain a range of antioxidants that offer health benefits, and utilizing them can be cost-effective. This study aimed to assess the antioxidant activity of hemp leaves from different cultivars and analyze their cannabinoid profiles. The choice of extractant and extraction conditions significantly influenced the extraction efficiency and antioxidant activity of the active compounds. Ultrasonic-assisted extraction using methanol yielded the highest cannabinoid profile and antioxidant potential in Bialobrzeska leaf extracts.
Cannabis leaves contain a diverse range of antioxidants, including cannabinoids, flavonoids, and phenolic compounds, which offer significant health benefits. Utilising cannabis leaves as a source of antioxidants presents a cost-effective approach because they are typically discarded during the cultivation of cannabis plants for their seeds or fibres. Therefore, this presented study aimed to assess the antioxidant activity of the leaves of selected hemp cultivars, such as Bialobrzeska, Tygra, and Henola, based on the results obtained with the 2,2 & PRIME;-Azino-bis(3-ethylbenzthiazoline-6-sulfonic acid, ferric reducing antioxidant power, cupric reducing antioxidant capacity, and 2,2-Diphenyl-1-picrylhydrazyl assays. The cannabinoid profile was analysed for the antioxidant activity to the contents of cannabidiol (CBD), cannabigerol (CBG), & UDelta;(9)-tetrahydrocannabinol (& UDelta;(9)-THC), and cannabichromene (CBC), determined based on chromatographic assays. The following variables were tested: the impact of various extractants (methanol, ethanol, and isopropanol), and their mixtures (50:50, v/v, as well as extraction methods (maceration and ultra-sound-assisted extraction) significant in obtaining hemp extracts characterised by different cannabinoid profiles. The results revealed that the selection of extractant and extraction conditions significantly influenced the active compounds' extraction efficiency and antioxidant activity. Among the tested conditions, ultrasound-assisted extraction using methanol yielded the highest cannabinoid profile: CBD = 184.51 & PLUSMN; 5.61; CBG = 6.10 & PLUSMN; 0.21; & UDelta;9-THC = 0.51 & PLUSMN; 0.01; and CBC = 0.71 & PLUSMN; 0.01 & mu;g/g antioxidant potential in Bialobrzeska leaf extracts.
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