Tinkturenpresse

Trachelospermum jasminoides (Lindl.) Lem. - Apocynaceae - 络石 luo shi, star jasmine, Confederate jasmine, Chinesischer Sternjasmin

Evergreen woody liana 2-10m high, native to China, Japan, Korea, Vietnam, grown elsewhere as ornamental; stem brownish, lenticellate; leaves petioled, ovate to obovate or narrowly elliptic, 2-10cm long, papery, glabrous or sometimes sparsely pubescent abaxially; cymes paniculate, terminal and axillary; sepals narrowly oblong, 2-5mm; corolla white, tube dilated at middle, 5-10mm, throat glabrous or pilose facing stamens; lobes obovate, as long as tube. http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=200018484

„The fragrant flowers, which are borne in spring to early summer, are white, 1-2 cm (3⁄8–3⁄4 in) diameter, with a tube-like corolla opening out into five petal-like lobes. The white, rotate actinomorphic flowers have a calyx formed by five narrow, smooth, reflexed sepals 2-5 mm, much shorter than the corolla tube. The latter has a dilated tube in the middle, 5-10 mm long, terminating in 5 obliquely bypassed lobes, all curved, resembling a helix turning counterclockwise.“ https://en.wikipedia.org/wiki/Trachelospermum_jasminoides

(E)-4-prop-1-enyl phenol (anol) has been found in the headspace of Trachelospermum jasminoides (~4%).
[The composition of the headspace from fragrant flowers: Further results., Joulain D., Flavour and Fragrance J 1987; 2: 149-155]

The essential oils from T. jasminoides flowers collected from two different geographical areas of Thailand, Chiang Rai and Chiang Mai, showed very different composition. The essential oil from the Chiang Rai area had (E)-nerolidol and α-phellandrene as the major constituents. In contrast, the essential oil of T. jasminoides collected from the Chiang Mai area contained trans-linalool oxide and citronellol as the major compounds. Olfactory interesting minor components were (E,E)-2,4-nonadienol, indole, (E/Z)-jasmone, (E)-jasmonyl acetate, and (Z)-methyl jasmonate (0.2-0.5%) e.g.
[Pansanit, Acharavadee, and Patcharee Pripdeevech. „Constituents, antibacterial and antioxidant activities of essential oils from Trachelospermum jasminoides flowers.“ Natural Product Communications 9.12 (2014): 1934578×1400901234]

Main compounds found in the headspace of the picked flowers were linalool, limonene, (E)-β-ocimene, myrcene, the linalool oxides, isoeugenol, (E)-4-prop-1-enyl phenol (anol), and indole e.g.
[Schuhfried, Erna, et al. „Withering of plucked Trachelospermum jasminoides (star jasmine) flowers–time-dependent volatile compound profile obtained with SPME/GC–MS and proton transfer reaction-mass spectrometry (PTR-MS).“ Postharvest Biology and Technology 123 (2017): 1-11]