Simple and rapid FTIR spectral data and chemometric analysis based method for evaluation of the quality of Indian Sandalwood oil

ABSTRACT

The authentication of Indian Sandalwood oil and the detection of adulterants are issues of increasing importance in the sandalwood oil-based industries such as food, perfumery, cosmetics and aromatherapy industries. In this paper, Fourier-Transform Infrared (FT-IR) spectral data combined with Principal Component Analysis (PCA) and Partial Least Square Regression (PLSR) were used for the authentication of pure and adulterated sandalwood oil. The pure Indian sandalwood oil was extracted by three different methods (i.e. solvent extraction, hydro-distillation and steam distillation) and blended with various proportion of diethyl phthalate (DEP) and diethylhexyl phthalate (DEHP) separately. The pure and adulterated oil samples were evaluated using FTIR-ATR (attenuated total reflection) spectroscopic technique. The results lead to the conclusion that FT-IR spectroscopy with chemometric techniques could be successfully used as a simple, rapid and non-destructive method for the quality assessment of the high-valued Indian Sandalwood oil.

KEYWORDS:

• Chemometric analysis
• FTIR
• GC/MS
• Indian Sandalwood oil
• quality

Acknowledgements

Authors are thankful to the Director and Group Co-ordinator (Research) IWST Bengaluru for their support and encouragement. Assistance received from colleagues and supporting staff of WPU division is gratefully acknowledged.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

We sincerely acknowledge the financial assistance from Indian Council of Forestry Research and Education (ICFRE), Dehradun, India.