Amazonian vegetable oils and fats: fast typification and quality control via triacylglycerol (TAG) profiles from dry matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry fingerprinting

J Agric Food Chem. 2009 May 27;57(10):4030-4. doi: 10.1021/jf900043u. Epub 2009 Apr 9.

Abstract

Amazonian oils and fats display unique triacylglycerol (TAG) profiles and, because of their economic importance as renewable raw materials and use by the cosmetic and food industries, are often subject to adulteration and forgery. Representative samples of these oils (andiroba, Brazil nut, buriti, and passion fruit) and fats (cupuaçu, murumuru, and ucuúba) were characterized without pre-separation or derivatization via dry (solvent-free) matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Characteristic profiles of TAG were obtained for each oil and fat. Dry MALDI-TOF MS provides typification and direct and detailed information, via TAG profiles, of their variable combinations of fatty acids. A database from spectra could be developed and may be used for their fast and reliable typification, application screening, and quality control.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Bertholletia / chemistry
  • Brazil
  • Fats / chemistry*
  • Fatty Acids / analysis
  • Food Contamination / analysis*
  • Plant Oils / chemistry*
  • Plants / chemistry
  • Quality Control
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / methods*
  • Triglycerides / analysis*

Substances

  • Fats
  • Fatty Acids
  • Plant Oils
  • Triglycerides