Accepted Article This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as doi: 10.1111/php.12131 This article is protected by copyright. All rights reserved. Received Date : 12-Mar-2013 Accepted Date : 01-Jul-2013 Article type : Symposium-in-Print: Research Article Spectroscopy, Microscopy and Fluorescence Imaging of Origanum vulgare L. Basis for Non-destructive Quality Assessment † . Johanna Mendes Novo 1 , Analia Iriel 2 , M. Claudia Marchi 1,3 , M. Gabriela Lagorio* 1 . 1 . INQUIMAE / Dpto. de Química Inorgánica, Analítica y Química Física. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Ciudad Universitaria. Pabellón II, 1er piso, C1428EHA, Buenos Aires, Argentina, 2 . Centro de Estudios Transdisciplinarios del Agua, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Av. Chorroarín 280, C1427CWO, Buenos Aires, Argentina, 3 . Centro de Microscopías Avanzadas. Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Ciudad Universitaria. Pabellón I, 1er piso, C1428EHA, Buenos Aires, Argentina *Corresponding author e-mail: mgl@qi.fcen.uba.ar (María Gabriela Lagorio)