Composition and Antimicrobial Activity of the Leaf and Twig Oils of Litsea Mushaensis and L. linii from Taiwan

Abstract

The hydrodistilled essential oils of the leaves and twigs of Litsea mushaensis and L. linii were analyzed. Sixty-nine and ninety compounds were identified in the leaf and twig oils, respectively, of L. mushaensis. The main components of the leaf oil were β-eudesmol (24.2%), τ-cadinol (10.2%), α-humulene (10.1%), α-pinene (9.7%), and trans-β-ocimene (6.5%), whereas the main components of the twig oil were trans-β-ocimene (19.5%), α-pinene (12.8%) and cis-β-ocimene (7.7%). With L. linii, 72 and 78 compounds were respectively identified in the leaf and twig oils. The main components of the leaf oil were β-selinene (15.7%), α-selinene (15.5%), β-caryophyllene (12.2%), α-humulene (7.2%), and δ-cadinene (5.6%), and of the twig oil trans-β-ocimene (20.8%), β-selinene (11.4%), α-cadinol (6.0%), δ-cadinene (5.8%), τ-cadinol (5.4%) and β-eudesmol (5.2%). L. mushaensis leaf oil was shown to have excellent antimicrobial and anti-wood-decay fungal activity, superior to the other oils.

Composition of Essential Oils from <i>Litsea acutivena</i> Hayata

“…The main components of the leaf oil of L. linii were β-eudesmol, τ-cadinol and α-humulene [16]. However, L. mushaensis leaf oil contained higher amounts of β-selinene, α-selinene and β-caryophyllene [16]. As usual, the identities of the major sesquiterpene components of the individual species differed from one another.…”

“…Previously the sesquiterpenes β-eudesmol, γ-eudesmol and δ-selinene were identified in L. kostermansii [14] while L. acuminata [15] contained β-caryophyllene, τ-cadinol, α-cadinol and α-humulene. The main components of the leaf oil of L. linii were β-eudesmol, τ-cadinol and α-humulene [16]. However, L. mushaensis leaf oil contained higher amounts of β-selinene, α-selinene and β-caryophyllene [16].…”

“…As usual, the identities of the major sesquiterpene components of the individual species differed from one another. Also, mixture of monoterpene and sesquiterpene compounds (trans-βocimene and β-selinene) characterized the essential oil of the twig of L. mushaensis [16]. The compositions of essential oil of L. coreana leaf was domainted mainly by mixture of sesquiterpene compounds and fatty acids namely n-decanal, (2E, 6E)-farnesol, β-eudesmol and ethyl n-dodecanoate [17].…”

Composition, in vitro Cytotoxicity, Anti-mildew and Anti-wood-decay Fungal Activities of the Fruit Essential Oil of Liquidambar formosana from Taiwan

“…Previous studies support the contention that these compounds have significant activity for suppressing microbial growth [22][23].  [24], M. philippinensis [25], Litsea mushaensis [26], Lit. coreana [27], Lit.…”

“…acutivena [28], and Lit. linii [26], the fruit essential oil of L. formosana was superior. The results verified that L. formosana fruit essential oil has excellent anti-wood-decay fungal activities.…”