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The enhancement of bioactive potential in Vitis vinifera leaves by application of microspheres loaded with biological and chemical agents
- Vinceković, Marko, Maslov Bandić, Luna, Jurić, Slaven, Jalšenjak, Nenad, Čaić, Ana, Živičnjak, Irena, Đermić, Edyta, Karoglan, Marko, Osrečak, Mirela, Topolovec-Pintarić, Snježana
- Journal of plant nutrition 2019 v.42 no.6 pp. 543-558
- Trichoderma viride, Vitis vinifera, alginates, antioxidant activity, beta-carotene, bioactive compounds, calcium, cations, chlorophyll, flowering, functional foods, grapes, leaves, magnesium, microparticles, polyphenols, small fruits, vines
- An overview of a research on Vitis vinifera plants treated with a chemical (calcium and magnesium ions) and biological (Trichoderma viride) agents simultaneously loaded in alginate microspheres was presented. Microspheres were applied at two growth stages: before flowering and berries pea-size. Physicochemical characteristics of leaves after the two growth stages and grapes were measured in terms of bioactive components content and antioxidant activity. After the treatments, vine leaves reached a significant increase in almost all measured parameters (polyphenols, antioxidant capacity, β-carotene, and chlorophyll) compared to the control. The highest total chlorophyll content was found after the treatment with microspheres containing Mg²⁺/Ca²⁺ cations, and T. viride. The treatments enhanced Vitis vinifera leaves in terms of bioactive potential and can be further used as a functional food. As compared to the control, somewhat elevated values of total polyphenols and antioxidant activity were found on the grape samples.