Phenolics from the culms of five bamboo species in the Tangjiahe and Wolong Giant Panda Reserves,Sichuan, China |
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| Authors: | Sarita Keski-Saari Vladimir Ossipov Riitta Julkunen-Tiitto Jingbo Jia Kjell Danell Timo Veteli Zhang Guiquan Xiong Yaowu Pekka Niemelä |
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| Institution: | 1. Faculty of Forest Sciences, University of Joensuu, Box 111, FI-80101 Joensuu, Finland;2. Department of Chemistry, University of Turku, FI-20014 Turku, Finland;3. Natural Product Research Laboratories, Faculty of Biosciences, University of Joensuu, Box 111, FI-80101 Joensuu, Finland;4. College of Wildlife Resources, Northeast Forestry University, Hexing Road 26, 150040 Harbin, China;5. Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-90183, Umeå, Sweden;6. Panda Breeding Center, Wolong Nature Reserve, Sichuan 623006, China;g Tangjiahe National Nature Reserve, Sichuan 628109, China;h Department of Biology, University of Turku, FI-20014 Turku, Finland |
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| Abstract: | Phenolic compounds were studied in the culms of five bamboo species collected in China: Yushania chungii, Fargesia robusta, Fargesia denudata, Fargesia rufa and Fargesia scabrida. All the species are eaten by giant panda (Ailuropoda melanoleuca). The culms contained phenolic acids and flavonoids in small concentrations, except for F. robusta, which did not contain flavonoids in detectable amounts. The species differed from each other in their phenolic composition. For example, F. rufa with the highest number of compounds clearly differed from other species. There were also differences among sampling sites, which reflect the differences among genotypes. Furthermore, there were clear ontogenetic differences in the culms: some compounds were present in mature culms but not in young (1–2 year old) culms, while the concentrations of other compounds decreased with increasing age. Over all, the composition and concentrations of soluble phenolic compounds in the bamboo culms were affected by species, age and site. |
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| Keywords: | Ailuropoda melanoleuca Yushania chungii Fargesia robusta Fargesia denudata Fargesia rufa Fargesia scabrida Bamboo (Poaceae: Bambusoideae) Phenolic compounds |
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