Flavour characterization of fresh and processed pennywort (Centella asiatica L.) juices

Wongfhun, P., Gordon, M. H. and Apichartsrangkoon, A. (2010) Flavour characterization of fresh and processed pennywort (Centella asiatica L.) juices. Food Chemistry, 119 (1). pp. 69-74. ISSN 0308-8146 doi: 10.1016/j.foodchem.2009.05.072

Abstract/Summary

The flavour characteristics of fresh and processed pennywort juices treated by pasteurization, sterilization and high pressure processing (HPP) were investigated by using solid-phase micro-extraction combined with gas chromatography-mass spectrometry. Sesquiterpene hydrocarbons comprised the major class of volatile components present and the juices had a characteristic smell due to the presence of volatile compounds including β-caryophyllene, humulene, E-β-farnesene, α-copaene, alloaromadendrene and β-elemene. All processing operations caused a reduction in the total volatile concentration, but HPP caused more volatile acyclic alcohols, aldehydes and oxygenated monoterpenoids to be retained than pasteurization and sterilization. Ketones were not present in fresh pennywort juice, but 2-butanone and 3-nonen-2-one were generated in all processed juices, and 2-nonanone and 2-hexanone were present in pasteurized and sterilized juices. Other chemical changes including isomerization were also reduced by HPP compared to pasteurization, and sterilization.

Item Type	Article
URI	https://reading-clone.eprints-hosting.org/id/eprint/4634
Item Type	Article
Refereed	Yes
Divisions	Life Sciences > School of Chemistry, Food and Pharmacy > Department of Food and Nutritional Sciences > Human Nutrition Research Group
Uncontrolled Keywords	Aroma; Flavour; Headspace volatiles; Centella asiatica; High pressure
Publisher	Elsevier
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