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Advisor(s)
Abstract(s)
Mono fl oral Lavandula spp. honey is very appre -
ciated by consumers due to its characteristic and pleasant
aroma and fl avor. Given the economic importance of this
type of honey, it is important to develop a rapid and non -
expensive methodology that allows certifying its quality.
In this context, this study aimed to compare the applic -
ability and accuracy of FTIR - ATR and FT - Raman techni -
ques for the quality evaluation of Lavandula spp. honey.
Calibration models, with PLS regression models, were
obtained for both methodologies concerning the following
parameters: total acidity, reducing sugars, hidroximetil -
furfural ( HMF ) , electrical conductivity, ash, proline con -
tent, diastase activity, apparent sucrose, total fl avonoids,
and total phenolic contents. The calibration models had
high regression coe ffi cients, r
2 ( FTIR - ATR: 0.965 – 0.996;
FT - Raman: 0.983 – 0.999 ) , high ratios of performance to
deviation, RPD ( FTIR - ATR: 5.4 – 15.7; FT - Raman: 7.6 – 53.7 ) ,
and low root mean square errors ( RMSEs; FTIR - ATR:
0.005 – 3.0; FT - Raman: 0.004 – 1.02 ) . These results corrobo -
rate the potentiality of FTIR - ATR and FT - Raman for quality
evaluation and evaluation of the chemical properties of Lavandula spp. honey even though FT - Raman technique
provided more accurate models.
Description
Keywords
Vibrational spectroscopy Lavender honey Chemical composition Quality evaluation
Citation
Anjos O, Guiné RPF, Santos AJA, Paula VB, Pereira H, Estevinho LM (2021) Evaluation of FT - Raman and FTIR – ATR spectroscopy for the quality evaluation of Lavandula spp. Honey. Open Agriculture, 6(1), 47-56.