Document details

Evaluation of FT-Raman and FTIR-ATR spectroscopy for the quality evaluation of Lavandula spp. Honey

Author(s): Anjos, O. ; Guiné, Raquel P.F. ; Santos, António J. ; Paula, Vanessa Branco ; Pereira, Helena ; Estevinho, Letícia M.

Date: 2021

Persistent ID: http://hdl.handle.net/10400.11/7563

Origin: Repositório Científico do Instituto Politécnico de Castelo Branco

Subject(s): Vibrational spectroscopy; Quality evaluation; Lavender honey; Chemical composition,; Vibrational spectroscopy; Vibrational spectroscopy; Quality evaluation; Quality evaluation; Lavender honey; Lavender honey; Chemical composition,; Chemical composition,


Description

Monofloral Lavandula spp. honey is very appreciated by consumers due to its characteristic and pleas antaroma and flavor. Given the economic importance of this ype of honey, it is important to develop a rapid and nonexpensive methodology that allows certifying its quality. In this context, this study aimed to compare the applicability and accuracy of FTIR-ATR and FT-Raman techniques 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, hidroximetilfurfural (HMF), electrical conductivity, ash, proline content, diastase activity, apparent sucrose, total flavonoids, and total phenolic contents. The calibration models had high regression coefficients, 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 corroborate 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.

Document Type Journal article
Language English
Contributor(s) Repositório Científico do Instituto Politécnico de Castelo Branco
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