Characterization of Indian pine Oleoresin and Evidence for the existence of Silicon compounds

Jeisank Gourava


Herein we report the thermal behavior of the Indian pine oleoresin by thermogravimetric, differential thermal analysis (TG-DTA) and powder XRD studies. The natural oleoresin is amorphous as seen from powder XRD studies. However, when heated to a high temperature, it forms crystalline SiO2 with characteristic reflections of alpha-quartz (SiO2) as seen in powder XRD patterns. TG-DTA analysis shows that the amount of SiO2 obtained upon heating is about 75% of the initial resin mass, a huge proportion compared to a maximum of 20% reported in the literature from other plant sources. The FTIR spectra of the oleoresin and its organic extract show a band around 1013-1081 cm-1, indicating the presence of compounds containing Si-O or Si-O-R groups in oleoresin. Our results suggest that the oleoresin contains a substantial amount of dispersed biosilica and/or several organosilicon compounds, not reported till date.

Full Text:



S Maiti, SS Ray, AK Kundu; “Rosin: a renewable resource for polymers and polymer chemicals”, Prog. Polym. Sci;, 14, 297-338 (1989)

A. Farjon, Pinus roxburghii. The IUCN Red List of Threatened Species e.T42412A2978347, (2013).

Martín-Ramos P, Fernández-Coppel IA, Ruíz-Potosme NM, Martín-Gil J; “Potential of ATR-FTIR Spectroscopy for the Classification of Natural Resins”; BEMS Reports. 4, 03-06, (2018).

Jamille de Souza Correa, Rafaella Ribeiro dos Santos, and Fauze Jacó Anaissi; “Purification and Characterization of Colophony Extracted of Pinus elliottii (Engelm, var. elliottii)”; Orbital: The Electronic J Chemistry; 10(3), (2018) DOI:

Philip J. Launer, “Infrared analysis of organosilicon compounds: spectra-structure correlations”, Silicon Compounds: Silanes & Silicones, Gelest, Inc Morrisville, PA (2013)

Heather A. Currie Carole C. Perry; “Silica in Plants: Biological, Biochemical and Chemical Studies”; Ann Bot; 100:1383–1389 (2007).

Elizabeth Trembath-Reichert, Jonathan Paul Wilson, Shawn E. McGlynn, and Woodward W. Fischer; “Four hundred million years of silica biomineralization in land plants”; Proc Natl Acad Sci USA;112:5449–5454, (2015)

Ma JF1, Tamai K, Yamaji N, Mitani N, Konishi S, Katsuhara M, Ishiguro M, Murata Y, Yano M., “A silicon transporter in rice”; Nature;440:688–691, (2006)

Gea Guerriero, Jean-Francois Hausman, and Sylvain Legay; “Silicon and the Plant Extracellular Matrix”; Front Plant Sci. 7: 463, (2016). https://doi:org/10.3389/fpls.2016.00463


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

ISSN: 2394-3688

© Science Front Publishers