| evaluation of chemical variability of cured vanilla beans (vanilla tahitensis and vanilla planifolia). | in order to establish a chemical fingerprint of vanilla diversity, thirty samples of v. planifolia j. w. moore and v. tahitensis g. jackson cured beans from seven producing countries were examined for their aroma and fatty acid contents. both fatty acid and aroma compositions were found to vary between vanilla species and origins. vanillin was found in higher amounts in v. planifolia (1.7-3.6% of dry matter) than in v. tahitensis (1.0-2.0%), and anisyl compounds were found in lower amounts in v. ... | 2009 | 19911578 |
| vanilla mosaic virus isolates from french polynesia and the cook islands are dasheen mosaic virus strains that exclusively infect vanilla. | sequence was determined for the coat protein (cp) gene and 3' non-translated region (3'ntr) of two vanilla mosaic virus (vanmv) isolates from vanilla tahitensis, respectively from the cook islands (vanmv-ci) and french polynesia (vanmv-fp). both viruses displayed distinctive features in the n-terminal region of their cps; for vanmv-ci, a 16-amino-acid deletion including the aphid transmission-related dag motif, and for vanmv-fp, a stretch of gtn repeats that putatively belongs to the class of na ... | 2006 | 16421638 |
| long-chain aliphatic beta-diketones from epicuticular wax of vanilla bean species. synthesis of nervonoylacetone. | analysis of the neutral lipids from vanilla fragrans and vanilla tahitensis (orchidaceae) without saponification resulted in the isolation and identification of a new product family in this plant: beta-dicarbonyl compounds. the compound structures are composed of a long aliphatic chain with 2,4-dicarbonyl carbons and a cis double bond at the n-9 position. they represent approximately 28% of the neutral lipids, that is, 1.5%, in immature beans, and approximately 10% of the neutral lipids, that is ... | 2000 | 11052727 |
| neotropical roots of a polynesian spice: the hybrid origin of tahitian vanilla, vanilla tahitensis (orchidaceae). | absent in the wild, tahitian vanilla (v. tahitensis) is a gourmet spice restricted in distribution to cultivated and feral stands in french polynesia and papua new guinea. its origins have been elusive. our objective was to test the purported hybrid derivation and parentage of v. tahitensis from aromatic, neotropical progenitors. nucleotide sequences from v. tahitensis and neotropical vanilla were assayed for phylogenetic relatedness in two independently inherited genomic regions, the nuclear it ... | 2008 | 21632424 |