期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 51, 期 5, 页码 1208-1214出版社
AMER CHEMICAL SOC
DOI: 10.1021/jf020939z
关键词
HPLC-DAD-MS-MS; piceatannol; postharvest; resveratrol; stilbene; traditional maceration; UV-C irradiation; viniferin; wine; wine grape
The use of postharvest controlled irradiation by UV pulses is proposed as a potential method to produce stilbene-enriched red wine. Monastrell grapes were UV-C-irradiated to increase stilbene content. The main inducible stilbenes were resveratrol and piceatannol, which are molecules with reported health-beneficial activities. The evolution of both compounds was followed in the different steps of an analytical traditional maceration wine-making process. The final wine made from UVC-irradiated grapes was enriched about 2- and 1.5-fold in resveratrol and piceatannol, respectively, when compared to the control wine. In addition, no difference was detected regarding the standard enological parameters (color, acidity, etc.). It is strongly suggested that, with the use of more susceptible wine grapes to induce bioactive stilbenes upon UV-C irradiation, the stilbene-enrichment of wine can be much higher.
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