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  • Title: Elicitation effect of Saccharomyces cerevisiae yeast extract on main health-promoting compounds and antioxidant and anti-inflammatory potential of butter lettuce (Lactuca sativa L.).
    Author: Złotek U, Świeca M.
    Journal: J Sci Food Agric; 2016 May; 96(7):2565-72. PubMed ID: 26265467.
    Abstract:
    BACKGROUND: This paper presents a study on changes in the main phytochemical levels and antioxidant and anti-inflammatory activity of lettuce caused by different doses and times of application of yeast extracts. RESULTS: Elicitation with yeast extract caused an increase in the total phenolic compounds and chlorophyll content, which varied according to the dose and time of spraying, but it did not have a positive impact on vitamin C, flavonoid and carotenoid content in lettuce. The best effect was achieved by double spraying with 1% yeast extract and by single spraying with 0.1% yeast extract. The increase in phytochemical content was positively correlated with the antioxidant and anti-inflammatory activity of the studied lettuce leaves. Chicoric acid seems to be the major contributor to these antioxidant activities. CONCLUSION: Yeast extract may be used as a natural, environmentally friendly and safe elicitor for improving the health-promoting qualities of lettuce. © 2015 Society of Chemical Industry.
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