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Jasminum grandiflorum L. - Oleaceae - Catalonian jasmine, Spanish jasmine, Royal jasmine, Chinesischer Tee-Jasmin

Twining deciduous shrub , up to 4m high, native from Northeast Africa to India, occasionally naturalized in tropics, cultivated widely as ornamental.

Subspecies:
Jasminum grandiflorum subsp. floribundum = Jasminum floribundum R. Br. ex Fresen.: native to Africa, Arabia
Jasminum grandiflorum subsp. grandiflorum: South Asia, cultivars and naturalized populations
http://en.wikipedia.org/wiki/Jasminum_grandiflorum

„By method of solvent extraction the Jasmine flowers are converted into Jasmine Concrete and Jasmine Oleoresin (sold as Jasmine Absolute). Both products have a huge demand in the fragrance industry.“ https://en.wikipedia.org/wiki/Jasminum_grandiflorum

The comparative headspace analysis of living vs. picked J.grandiflorum flowers showed interesting varaiation of constituents (living/picked): 6-methyl-5-hepten-2-one (0.2/0%), (Z)-3-hexenyl acetate (0.2/0%), (Z,E)-ocimene (0.2/1.1%), benzyl alcohol (0/4%), benzyl acetate (60/40%), linalool (3/30%), indole (11/2%), cis-jasmone (3/0%), 3,5-dimethyl 2-ethylpyrazine (0/0.5%), methyl jasmonate (0.3/0%).
[The chemistry of flowers, fruits and spices: live vs. dead-a new dimension in fragrance research., Mookherjee, B.D., Trenkle, R.W., Wilson, R.A., Pure and Applied Chemistry, Vol.62(7), 1990, 1357-1364] http://media.iupac.org/publications/pac/1990/pdf/6207x1357.pdf

J.grandiflorum flowers yield 0.2% concrete and from that, 0.1% absolute. Main components are benzyl acetate (34%), benzyl benzoate (24%), benzyl alcohol (5%), linalool (8%), cis-jasmone (3%), and 1H-indole (2.5%), which together total more than 75% (as shown by works from Albert Hesse and Friedrich Müller 1899-1904). Additional 94 trace compounds that contribute to the typical odor of jasmine absolute have been identified, like p-cresol, geraniol, (E,E)-farnesol, (+)-(R,E)-nerolidol, α-terpineol, and vanillin; The methyl jasmonates (-)-methyl jasmonate (1.7%) and (+)-epi-methyl jasmonate (0.2%; 400 times more potent then the former) comprise the odorous principle of jasmine. δ-Jasmolactone (1.5%) contributes with pleasant sweet floral fruity notes to the character of jasmine absolute.
[Scent and Chemistry, Günther Ohloff, Wilhelm Pickenhagen, Philip Kraft, Wiley-VCH, 2012, 259-266]

Jasminum grandiflorum L., Malati, Botanical Register, vol. 2: t. 91 (1816) [S. Edwards]
http://www.plantillustrations.org/illustration.php?id_illustration=96958