Chemical composition and antioxidant activity of leaves of mycorrhized sea-buckthorn ( Hippophae rhamnoides L.)

Analysis of the bioavailability of tea species

“…Herbal tea is the leading source of ascorbic acid, which is 2-2.5 times higher than that of green and black teas. The content of ascorbic acid obtained by us for green and black teas is consistent with that of other authors [13,14]. Since the absorption of vitamin P and ascorbic acid is better in a complex, we should especially mention Mint Herbal Tea, which among the samples studied by us contained the maximum quantity of both rutin and ascorbic acid.…”

Impact of phenolic compounds and vitamins C and E on antioxidant activity of sea buckthorn (Hippophaë rhamnoides L.) berries and leaves of diverse ripening times

“…TPC contents in the majority of analyzed cultivars were higher than the published value of 1.75 g GAE.kg -1 fw in berries of Indian Summer cultivar from Canada (Araya-Farias et al, 2011). However, higher content of TPC of 8.58 g.kg -1 dw was published in sea buckthorn leaves from Poland (Jaroszewska & Biel, 2017). Such a variability of phenolic contents has been recorded due to the influence of number of factors, such as the type of locality and the year of harvest.…”

“…Sea buckthorn berries have been reported as a significant source of four to one-hundred times larger amounts of vitamin C than any other fruits (Makovics-Zsohár, Hegedus, Rédei, & Papp, 2014). Additionally, its other parts, such as leaves, twigs or roots, have been currently investigated to identify the content of important bioactive compounds and have been used for nutraceutical, pharmaceutical and cosmetic purposes (Jaroszewska & Biel, 2017; Makovics-Zsohár et al, 2014; Morgenstern, Ekholm, Scheewe, & Rumpunen, 2014; Perk, Ceylan, Yanar, Boztas, & Capanoglu, 2016). Nonetheless, significant differences in chemical composition of berries and leaves depending on the cultivar are known as well as the consequent composition changes caused by the environmental conditions.…”

Hippophae rhamnoides L. leaf and twig extracts as rich sources of nutrients and bioactive compounds with antioxidant activity

“…In another study Kallio et al described tocopherol contents in berries and seeds, and similarly, Madawala et al found α-tocopherols in the highest concentration in berry extracts 33 , 39 . Jaroszewska and Biel estimated the amount of tocopherol in leaves and found 40.98 mg/kg in leaf samples from plants growing in Poland 40 . Vitamins B are a group of water-soluble vitamins that can be found in plant extracts.…”