Abstract
One of the biggest challenges for wine producing regions is to create alternatives to increase the added value of the large amount of vine-shoot wastes generated. The antioxidant, antifeedant and phytotoxic activities of vine-shoot aqueous extracts obtained by different extraction methods (Conventional Solid-Liquid Extraction, CSLE; Solid-Liquid Dynamic Extraction, SLDE-Naviglio; Microwave Extraction, ME) have been studied. Because of their higher content of phenolic compounds, CSLE and ME extracts showed a higher DPPH radical-scavenging activities compared with SLDE-Naviglio extracts. Significant antifeedant effects against Leptinotarsa decemlineata were observed for CSLE and ME. None of the extracts had phytotoxic effect against Lactuca sativa germination and radicle growth, but SLDE-Naviglio extracts stimulated the radicule elongation. ME extracts were the most active inhibitors of Lolium perenne germination. These results suggest some potential applications of vine-shoot extracts including cosmetics, nutraceuticals or pharmaceuticals linked to their antioxidant effects, or in organic agriculture because of their antifeedant and allelopathic activities.
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