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vanilla_tahitensis_j.w._moore [2017/10/30 09:51]
andreas 		vanilla_tahitensis_j.w._moore [2017/10/30 10:16]
andreas
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 Vanilla tahitensis J.W. Moore - Orchidaceae  - Tahitian vanilla, **Tahiti-Vanille** Vanilla tahitensis J.W. Moore - Orchidaceae  - Tahitian vanilla, **Tahiti-Vanille**
  
-Evergreen vine, native (only known in cultivation) to Tahiti, cultivated elsewhere. +Evergreen vine, native (only known in cultivation) to Tahiti, cultivated elsewhere; stems zizagging; leaves alternate, short-petioled, up to 20cm long; flowers in lateral spikes, pale yellowish-green, petals and sepals narrow, lip fringe-edged, inside striped yellow-orange, shorter than petals. [[http://cookislands.bishopmuseum.org/species.asp?id=14082]]
  
 "In the literature there is contradictory information on the compounds of Tahiti vanilla, particularly concerning the piperonal content. Because of this, Tahitian beans and Tahiti vanilla resinoid were analysed by HPLC. Compared with results obtained on Vanilla planifolia, the Tahitian beans contained relatively low amounts of vanillin and vanillic acid, relatively high amounts of p-hydroxybenzoic acid and considerable amounts of anisic acid and anisyl alcohol. Furthermore, although anisaldehyde was detectable, 3-ethoxy-4-hydroxy-benzaldehyde (“ethylvanillin”), coumarin and piperonal were not. The resinoid contained the same compounds as the beans in the expected amounts and ratios. It has to be supposed that reports of positive piperonal results refer to research on adulterated vanilla beans." \\ "In the literature there is contradictory information on the compounds of Tahiti vanilla, particularly concerning the piperonal content. Because of this, Tahitian beans and Tahiti vanilla resinoid were analysed by HPLC. Compared with results obtained on Vanilla planifolia, the Tahitian beans contained relatively low amounts of vanillin and vanillic acid, relatively high amounts of p-hydroxybenzoic acid and considerable amounts of anisic acid and anisyl alcohol. Furthermore, although anisaldehyde was detectable, 3-ethoxy-4-hydroxy-benzaldehyde (“ethylvanillin”), coumarin and piperonal were not. The resinoid contained the same compounds as the beans in the expected amounts and ratios. It has to be supposed that reports of positive piperonal results refer to research on adulterated vanilla beans." \\
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 {{http://cookislands.bishopmuseum.org/MM/MX1-4/4Q466_Vani-tahi_RR1_GM_MXa.jpg}} \\ {{http://cookislands.bishopmuseum.org/MM/MX1-4/4Q466_Vani-tahi_RR1_GM_MXa.jpg}} \\
-McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. \\+Vanilla tahitensis; McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. \\
 Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org. Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org.
vanilla_tahitensis_j.w._moore.txt · Zuletzt geändert: 2018/03/31 10:32 von andreas

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