Chemometric Evaluation of Discrimination of Aromatic Plants by Using NIRS, LIBS
- PDF / 2,185,438 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 109 Downloads / 159 Views
Chemometric Evaluation of Discrimination of Aromatic Plants by Using NIRS, LIBS Elif Ercioglu 1 & Hasan Murat Velioglu 2 & Ismail Hakki Boyaci 1 Received: 18 May 2017 / Accepted: 3 January 2018 # Springer Science+Business Media, LLC, part of Springer Nature 2018
Abstract Aromatic plants have different chemical compositions that give them specific properties such as colour, aroma and taste and can be classified based on differentiation of various chemical constituents such as protein, vitamins, minerals, volatile and nonvolatile oil, carbohydrates and the presence of adulterants. The aim of the present study was to develop a fast, simple and nondestructive method for discrimination of aromatic plants, juniper (Juniperus communis), rosemary (Rosmarinus officinalis), laurel (Laurus nobilis), sweet basil (Ocimum basilicum), black pepper (Piper nigrum), thyme (Origanum majorana), lavender (Lavandula latifolia), spearmint (Mentha spicata) and ginger (Zingiber officinale), commonly used. In order to discriminate aromatic plants, chemometric methods, namely principal component analysis (PCA), were used together with spectroscopic methods. Analysis of plant samples was carried out using Raman spectroscopy (RS), near-infrared spectroscopy (NIRS) and laser-induced breakdown spectroscopy (LIBS). Although Raman spectra of aromatic plant samples could not be obtained due to problems with sample degradation and fluorescence effect, satisfying classification of aromatic plant samples was accomplished by LIBS and NIRS. PCA models developed using NIRS data showed that the first two principal components explained 82.56% of the total variance. Elemental composition of the aromatic plant samples was investigated using LIBS, and the first two principal components explained 77.97% of the total variance in the PCA model generated by using the LIBS data. The ability to rapidly discriminate various culinary herbs makes these spectroscopic methods available to use by the aromatic plant industry in order to perform a fast quality control of incoming raw materials. Keywords Aromatic plants . Raman spectroscopy . NIRS . LIBS . Chemometrics
Introduction Aromatic plants have been used since ancient times as preservatives, colorants and flavour enhancers. Nowadays, aromatic plants and their bioactive components are mostly used in medicines, cosmetics and perfumes as well as in the production of many additives and chemicals. For all cultures, aromatic plants have a significant role in human nutrition. They reduce Electronic supplementary material The online version of this article (https://doi.org/10.1007/s12161-018-1145-x) contains supplementary material, which is available to authorized users. * Ismail Hakki Boyaci [email protected] 1
Department of Food Engineering, Faculty of Engineering, Hacettepe University, Beytepe, 06800 Ankara, Turkey
2
Department of Agricultural Biotechnology, Faculty of Agriculture, Namik Kemal University, 59030 Tekirdag, Turkey
the need for salt, add flavour to foods and their essential oils provide extra antiox
Data Loading...
