Occurrence and Estimation of trans-Resveratrol in One-Year-Old Canes from Seven Major Chinese Grape Producing Regions

The concentration of trans-resveratrol in 165 grape cane samples from three major grape production regions and four large distribution centers of Chinese wild Vitis species were determined by reversed-phase high-performance liquid chromatography (HPLC). Among the different genotype groups and purpose of uses; cultivars of V. vinifera had much higher amounts of trans-resveratrol than did the […]

Influence of ripeness and drying process on the polyphenols and tocopherols of Pistacia vera L

This paper highlights; for the first time; the changes in the phenolics fraction (anthocyanins; flavonoids and stilbenes) and tocopherols of unpeeled Pistacia vera L. var. bianca with ripening; and the effect of the sun-drying process. The total polyphenol levels in pistachios; measured as mg of Gallic Acid Equivalent (GAE); were: 201 +/- 10.1; 349 +/- […]