Comparison and evaluation of volatile oils from three different extraction methods for some Thai fragrant flowers

Abstract

Several tropical flowers have distinctive fragrances which are very appealing to use in perfumery, cosmetics and spa. However, to obtain a 'natural fragrance' from the flower is a challenge as the scent could change during the extraction process. The aim of the study is to find the suitable procedure for extraction of volatile oils from some Thai fragrant flowers. Three different methods: hydrodistillation, solvent extraction and enfleurage methods have been applied for the extraction of volatile oil from Jasminum sambac L. Aiton; Oleaceae (jasmine). The quantities and quality of jasmine volatile oils obtained from the different tested methods were compared. The solvent extraction method using 95% ethanol provided the greatest level of oil yield. However, sensory evaluation using preference test showed that the scents of the volatile oils from solvent extraction using diethyl ether and from enfleurage method were the closest to the fresh flowers compared with the volatile oils obtained from other methods. Their chemical constituents were analysed using gas chromatography coupled with mass spectrometer. Both volatile oils were then evaluated using a triangle discrimination test. From the triangle test, we found that 14 panellists from the total of 36 could not distinguish between the scents of jasmine oil from enfleurage and fresh jasmine flowers whereas only one panellist could not distinguish between the scent of jasmine oil from the solvent extraction and fresh jasmine flowers. These results suggest that the scent of the volatile oil obtained from the enfleurage method was the closest to fresh flowers compared with that obtained from other methods. This method was then successfully applied for extraction of volatile oils from three other Thai fragrant flowers, Michelia alba DC.; Magnoliaceae, Millingtonia hortensis L.; Bignoniaceae and Hedychium coronarium J. Konig; Zingiberaceae.

Prevention of Bacterial Biofilm Formation on Soft Contact Lenses Using Natural Compounds

“…Honey was purchased from Isis Company (Cairo, Egypt), Jasmine oil, Buddleja salviifolia leaves extract and Calendula officinalis flowers extract were prepared by Morgan chemicals company (Cairo, Egypt), upon authors request. Jasmine oil was extracted from Jasminum officinale petals by hydro-distillation [49] The powdered Calendula officinalis flowers were subjected to extraction with ethanol using soxhlet apparatus as described previously [50] The powdered leaves of Buddleja salviifolia were extracted with 20% aqueous methanol as reported previously [28]. …”

Volatile compounds profile of Bromeliaceae flowers

“…Volatile compounds also have significant importance in the food industry, cosmetics, perfumes, chemical and pharmaceutical industries (Dudareva & Pichersky, 2006;Cheng, 2010;Darjazi, 2011;Paibon et al, 2011), due to the increased preference for natural food additives and other compounds of biological origin (Huang, Lee, & Chou, 2001). These are mainly terpenoids, phenylpropanoids, hydrocarbons, alcohols, aldehydes, ketones, ethers and esters derived from fatty acids, representing approximately 1 % of the known secondary metabolites in plants (Dudareva, Pichersky, & Gershenzon, 2004).…”

Botanical, Phytochemical and Pharmacological Properties of Hedychium (Zingiberaceae) – A Review

“…Plant organs that contain natural volatile oils are flowers, leaves, barks, roots, seeds, fruits, rhizomes and gums or oleoresin exudate. This component can be accumulated on oils cells, secretion ducts or glandular hairs of plants, modified parenchymal cells, resin canals, oil tubes called vittae, lysigenous cavities, schizogenous passages or gum canals 12,13 . The rhizomes of Zingiberaceaeplants, included the genus of Hedychium, are the volatile oils sources.…”

“…The volatile oils from H. coronarium flower were extracted by enfleurage method with whale's fat-palm oil (1:1) as the solvent 13 . The result showed that the scent of the volatile oils obtained from enfleurage method was the closest to fresh flowers.The chemical compositions were identified by GC-MS as ethyl hexadecanoate, tetradecanol, benzyl alcohol, α-farnesene and linalool.…”