Abstract
Due to the content of biologically active substances, sea buckthorn (Hippophae rhamnoides L.) has become the object of great interest of both, experts and the general public. It is appreciated particularly for the high content of vitamins and other biologically active substances, not only in berries but also in leaves and bark. The aim of the study was to evaluate the nutritional quality of sea buckthorn juice prepared from different varieties of sea buckthorn based on the content of total carotenoids, polyphenols and antioxidant activity. In this study we used varieties Hergo, Tytti, Vitaminaja, Raisa, Askola, Dorana, Slovan, Leikora, Bojan, Terhi and Masličnaja. Content of different components was quantified using spectrophotometry. The total carotenoids content expressed as β-carotene content in juice ranged from 50.63 mg.100 g-1 DM to 93.63 mg.100 g-1 DM, the highest content was in variety Askola and the lowest one in Terhi. Total polyphenols content determined by Folin-Ciocalteu method ranged from 13.03 mg GAE. dm-3 DM to 25.35 mg GAE. dm-3 DM. The highest content was identified in juice of variety Dorana and the lowest one in Raisa. The antioxidant activity quantified by the FOMO method ranges from 45.11 g AA. dm-3 DM to 108.77 g AA. dm-3 DM. The highest antioxidant activity was determined in juice of Dorana and the lowest in variety Bojan
Highlights
The first remarks about sea buckthorn are several centuries old
High levels of carotenoids content over 70 mg.100 g-1 dry matter we found in samples of juices from German varieties Dorana, Leikora, Hergo
Sea buckthorn (Hippophae rhamnoides L.) has become a product of interest thanks to its content of biologically active substances. It is appreciated especially for the high content of vitamins in fruit and in its leaves or bark which are characterized by healing effects
Summary
The first remarks about sea buckthorn are several centuries old. Sea buckthorn caught considerable attention in Russia, where it has been seen as a very important plant for its healing and regenerative effects (Bajer, 2014). Nowadays the public interest in sea buckthorn as a special dietary supplement is growing, mainly for its nutritional and health-related effects (Yang and Kallio, 2002). Sea buckthorn is native to Asia and very large Eurasian area at different altitudes. It is a unique plant that is currently domesticated in different countries, in particular China, Russia, Germany, Finland, Romania, France, Nepal, Pakistan and India (Selvamuthukumaran et al, 2007). The most suitable for its growth is light sandy clay soil but it thrives in arid, semi-arid and fragile mountain areas. From the temperature point of view, it withstands high daytime temperatures in summer and severe winter frosts (Letchamo et al, 2007)
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