Abstract
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 cultivars of both V. labrusca or V. labrusca and V. vinifera hybrids, and within the V. vinifera species, significantly higher amounts of trans-resveratrol were found in wine grapes compared to table ones. No significant differences were observed between V. labrusca and its hybrids from crosses with V. vinifera, and between red cultivars and white ones (P < 0.05 or P < 0.01). The contents of trans-resveratrol, as a normal constituent occurring in grape canes, in Chinese wild species of V. amurensis, V. pentagona, and V. davidii from their native habitats were also relatively high.
Highlights
Introduction transResveratrol (3,5,4′-trihydroxystilbene) is a phytoalexin synthesized naturally by several plants in response to pathogen infection, traumatic damage, ultraviolet (UV) irradiation, and other stresses [1,2,3]
The frequency distribution and median of amounts of trans-resveratrol in one-year-old canes were similar in the two repositories (Figures 2 and 3)
The trans-resveratrol concentrations posted by wine grape cultivars of V. vinifera varied significantly with their genetic backgrounds
Summary
Introduction transResveratrol (3,5,4′-trihydroxystilbene) is a phytoalexin synthesized naturally by several plants in response to pathogen infection, traumatic damage, ultraviolet (UV) irradiation, and other stresses [1,2,3]. Trans-resveratrol has been produced by chemical synthesis and is sold as a nutritional supplement derived primarily from the Chinese and Japanese folk medicine giant knotweed rhizome [10]. It has gained significant global attention due to its promising biological and pharmacological properties including antioxidant, anticancer, cardioprotective, anti-inflammatory, antiplatelet, antiviral action and life span extension in diverse organisms, from yeast to vertebrates [4,11,12,13,14,15,16,17]. Grapes and wine are the primary dietary sources of resveratrol in the human diet. All the cultivated grape cultivars in China are mainly grown in three major regions, indicated as C1, C2, and
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