Constituents, Antibacterial and Antioxidant Activities of Essential Oils from Trachelospermum jasminoides Flowers

Abstract

The present work reports the chemical compositions, antibacterial and antioxidant activities of essential oils from T. jasminoides flowers collected from two different geographical areas, Chiang Rai and Chiang Mai, Thailand. The essential oil of T. jasminoides from the Chiang Rai area had 99 compounds representing 97.9% of the total oil composition, with E-nerolidol and -phellandrene as the major constituents. In contrast, the essential oil of T. jasminoides collected from the Chiang Mai area contained 93 components representing 94.8% of the total oil, with trans-linalool oxide and citronellol as the major compounds. Flower oils of T. jasminoides exhibited greater antibacterial activities against Gram-negative bacteria than Gram-positive bacteria. Both oils displayed antioxidant activities.

Anti-inflammatory Constituents from Caulis Trachelospermi

“…Twenty known compounds were identified as tracheloside (4) [22], 2-hydroxy-2-(3′,4′-dihydroxyphenyl)methyl-3-(3″,4″-dimethoxyphenyl) methyl-γ-butyrolactone (5) [23], nortrachelogenin (6) [24], nortracheloside (7) [25], matairesinol (8) [26], arctigenin (9) [24], traxillagenin (10) [27], dysosmarol (11) [28], odoratisol C (12) [29], (−)-7′R*-O-methyl-7-epi-tanegool (13) [30], (7R/S,8R)-7,8-dihydro-9′-hydroxyl-3′-methoxyl-8-hydroxymethyl-7-(4-hydroxy-3-methoxyphenyl)-1′-benzofuranpropanol 9′-O-β-D-glucopyranoside (14) [31,32], trachelosperoside B1 (15) [33], rhoifolin (16) [34], luteolin (17) [35], apigenin (18) [36], apigenin-7-O-β-D-rutinoside (19) [37], afzelin (20), quercitrin (21), quercetin (22) [38], and 1-hexadecanoyl propan-2,3-diol ( 23) [21] by comparison of their physical and spectral data with those reported in the literature. Among these, compounds 4-14 are lignans, 16-22 are flavonoids, 1, 2, and 15 are triterpenes, 3 and 23 are glycerides.…”

“…According to the Chinese pharmacopoeia, the stems with leaves of T. jasminoides have been used traditionally for treating rheumatic arthralgia, aching of the thighs and knees, and traumatic injuries [2,3]. Natural constituents such as lignans [4], flavonoids [5], triterpenoids [6], and alkaloids [7] from this species exhibited antioxidant [8], anti-inflammatory [3], antifatigue [9], and cytotoxic effects [10].…”