Izvorni znanstveni članak
https://doi.org/10.17508/CJFST.2018.10.1.12
The estimation of kinetic parameters of the solid-liquid extraction process of the lavender flower (Lavandula x hybrida L.)
ANA-MARIJA CVETKOVIĆ
; University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Process Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
TAMARA JURINA
orcid.org/0000-0002-1695-6766
; University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Process Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
DAVOR VALINGER
; University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Process Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
ANA JURINJAK TUŠEK
orcid.org/0000-0002-3032-903X
; University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Process Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
MAJA BENKOVIĆ
orcid.org/0000-0003-2167-6862
; University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Process Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
JASENKA GAJDOŠ KLJUSURIĆ
orcid.org/0000-0001-6657-7337
; University of Zagreb, Faculty of Food Technology and Biotechnology, Department of Process Engineering, Pierottijeva 6, 10000 Zagreb, Croatia
Sažetak
The use of medicinal plants has been well documented for the past several
decades. Plants from the Lavender genus are used for culinary purposes, but
also as a part of herbal medicine, owing its benefits to essential oils and
bioactive compounds. A detailed description of the extraction process
dynamics is required to obtain the highest possible amount of bioactive
compounds from lavender. In this study, a solid-liquid extraction of lavender
flowers, using water as solvent, was performed. Total polyphenols, dry matter,
conductivity, and total dissolved solids were determined in regular time
intervals and experimental data was further used for mathematical modelling.
Peleg’s, Page’s, and the logarithmic model were applied in order to describe
the kinetics of bioactive compounds in lavender during solid-liquid extraction.
The initial extraction rate and extraction capacity were determined for three
different extraction temperatures; T = 40, 60, and 80 °C. The obtained results
indicated that the initial extraction rate and the extraction capacity were the
highest at T = 80 °C. The adequacy of the applied mathematical models was
estimated based on R2 and SRMSE values, which indicated that the most
adequate model for solid-liquid extraction of lavender was the Peleg’s model
(R2 = 0.996, for total polyphenols at T = 40 ºC and R2 = 0.975 for dry matter
at T = 60 °C, respectively).
Ključne riječi
lavender; solid-liquid extraction; mathematical modelling
Hrčak ID:
200553
URI
Datum izdavanja:
25.5.2018.
Posjeta: 1.602 *