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

• Published in: Journal of agricultural and food chemistry Vol. 57; no. 10; pp. 4030 - 4034
• Main Authors: Saraiva, Sérgio A, Cabral, Elaine C, Eberlin, Marcos N, Catharino, Rodrigo R
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 27.05.2009
• Subjects: adulterated products; Amazonia; analysis; Analytical Methods; Bertholletia; Bertholletia - chemistry; Biological and medical sciences; Brazil; chemistry; Fat industries; Fats; Fats - chemistry; fatty acid composition; Fatty Acids; Fatty Acids - analysis; Food Contamination; Food Contamination - analysis; Food industries; Fundamental and applied biological sciences. Psychology; General aspects; interspecific variation; lipid composition; mass spectrometry; methods; Methods of analysis, processing and quality control, regulation, standards; plant fats; Plant Oils; Plant Oils - chemistry; plant products; Plants; Plants - chemistry; product authenticity; Quality Control; species differences; spectral analysis; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization - methods; triacylglycerols; Triglycerides; Triglycerides - analysis; vegetable oil; Amazonia; Brazil; triacylglycerol; Amazonian oil; Amazonian fat; MALDI−TOF−MS fingerprinting; Vegetable fat; Lipids; Vegetable oil; Oils and fats; Matrix assisted laser desorption ionization; Profile; Triacylglycerol; Quality control; Fat; Mass spectrometry; MALDI―TOF―MS fingerprinting
• ISSN: 0021-8561; 1520-5118; 1520-5118
• DOI: 10.1021/jf900043u

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.