On the effect of the ratio of the distiler volume and that of the microwave cavity on the extraction of Cymbopogon nardus dried leaves by microwave hydrodistillation

Zuhdi Ma'sum*, Heri Septya Kusuma, Ali Altway, Mahfud Mahfud

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The production of essential oils as fragrances and aroma ingredients has been evolving towards an industrial scale for decades. One of the essential oils used in industry is a produce from citronella grass (Cymbopogon nardus). A study of a step up in capacity of Cymbopogon nardus microwave radiation treatment is undertaken. This research compares the effect of different parameters such as the microwave power and the ratio of distiler volume and that of the microwave cavity (D/C). With the aim to determine the relationship between the parameters, these research is performed using a microwave power of 700 W, 560 W, 430 W at D/C values of 0.08, 0.04, and 0.02 in case of a feed to solvent ratio (F/S) of 24 %. The results of these experiments indicate that the usage of microwave power and the increase of D/C ratio lead to an increase of the oil yields by up to 34 %, 25 %, and 34 %. The chemical composition of the citronella oil is analyzed by GC-MS. It is found containing mainly citronella, geraniol and citronellol of 40.54 %, 17.39 %, and 15.88 %, respectively. The results show that the increase of D/C ratio and the microwave power increase essentially the extraction yield. They also have significant implications for the continuing use of microwave radiation in extraction and could be compromised to scale up the capacity.

Original languageEnglish
Pages (from-to)778-786
Number of pages9
JournalJournal of Chemical Technology and Metallurgy
Volume54
Issue number4
Publication statusPublished - 2019

Keywords

  • Cymbopogon nardus
  • Distiller to cavity (D/C)
  • Microwave hydrodistillation
  • Microwave power (W)
  • Step up capacity

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