GC×GC-TOFMS Analysis of Essential Oils Composition from Leaves, Twigs and Seeds of Cinnamomum camphora L. Presl and Their Insecticidal and Repellent Activities

Abstract

Interest in essential oils with pesticidal activity against insects and pests is growing. In this study, essential oils from different parts (leaves, twigs and seeds) of Cinnamomum camphora L. Presl were investigated for their chemical composition, and insecticidal and repellent activities against the cotton aphid. The essential oils, obtained by hydrodistillation, were analyzed by GCˆGC-TOFMS. A total of 96 components were identified in the essential oils and the main constituents found in the leaves and twigs were camphor, eucalyptol, linalool and 3,7-dimethyl-1,3,7-octatriene. The major components found in the seeds were eucalyptol (20.90%), methyleugenol (19.98%), linalool (14.66%) and camphor (5.5%). In the contact toxicity assay, the three essential oils of leaves, twigs and seeds exhibited a strong insecticidal activity against cotton aphids with LC 50 values of 245.79, 274.99 and 146.78 mg/L (after 48 h of treatment), respectively. In the repellent assay, the highest repellent rate (89.86%) was found in the seed essential oil at the concentration of 20 µL/mL after 24 h of treatment. Linalool was found to be a significant contributor to the insecticidal and repellent activities. The results indicate that the essential oils of C. camphora might have the potential to be developed into a natural insecticide or repellent for controlling cotton aphids.

Behavioural response of green peach aphid Myzus persicae (Sulzer) to volatiles from different rosemary (Rosmarinus officinalis L.) clones

“…The lack of a repellent effect on M. persicae was also observed by Bruce et al () for linalol and by Hori () for α‐pinene, camphene, eucalyptol and borneol. Nevertheless, several studies demonstrated the effect of these VOCs on the behaviour of aphids and other insects (Chapman et al , ; Hori & Komatsu, ; Hori, ; Tomova et al , ; Rozman et al , ; Abdelgaleil et al , ; Halbert et al , ; Webster et al , ; Zhang et al , ; Lamy et al , ; Jiang et al , ). Such contradictions are not necessarily surprising and testify the difficulty of making comparisons without considering the experimental conditions.…”

The Chemical Composition of Essential Oils from Cinnamomum camphora and Their Insecticidal Activity against the Stored Product Pests

“…EL and EF both contained linalool (12.8%–22.9%), while safrole was retrieved only in EF. The prior paper also studied the chemical composition of the twigs and seeds of C. camphora in Jiangxi [25]. The main compounds of this essential oil were eucalyptol (17.2%), camphor (13.2%), and 3,7-dimethyl-1,3,7-octatriene (11.5%), while in seeds they were eucalyptol (20.9%), methyleugenol (20.0%), linalool (14.7%), and camphor (5.5%).…”

“…In previous works, powders and other parts of C. camphora essential oils have been evaluated for bioactivities against agricultural as well as stored product insects [12,13,14,17,18,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39]. The selected constituents also showed bioactivities and reflected the compositional complexity in bioactivity of natural mixtures [40].…”

A Review on Aroma Profile of Cinnamomum Species in North and North East India

“…The major components in the seed oil of C. amphora were eucalyptol (20.9%), methyleugenol (19.9%), linalool (14.7%) and camphor (5.5%). [47] According to Guo et al [48] , the bark oil of C. camphora from China was rich in D- In an another report from China, the main components of C. camphora leaves essential oil were D-camphor (40.5%), linalool (22.9%) and cineole (11.3%). [49] Fresh leaves of C.…”