Artículos de revistas
Fingerprinting Of Propolis By Easy Ambient Sonic-spray Ionization Mass Spectrometry.
Registro en:
Talanta. v. 81, n. 1-2, p. 100-8, 2010-Apr.
1873-3573
10.1016/j.talanta.2009.11.043
20188894
Autor
Sawaya, Alexandra C H F
Abdelnur, Patrícia Verardi
Eberlin, Marcos N
Kumazawa, Shigenori
Ahn, Mok-Ryeon
Bang, Keuk-Seung
Nagaraja, Narayanappa
Bankova, Vassya S
Afrouzan, Houshang
Institución
Resumen
Chemical profiles of a representative set of 49 propolis ethanolic extracts collected worldwide (North and South America, Europe, Asia and Oceania) were obtained via easy ambient sonic-spray ionization mass spectrometry (EASI-MS). This simple and easily implemented fingerprinting technique analyses directly (without any pre-separation or sample manipulation) a tiny droplet of the ethanolic extract placed on a inert surface under ambient conditions. Data acquisition took about a minute per sample with no substantial sample carry-over. Extraction of propolis with ethanol by using an ultrasonic bath method gave EASI-MS data similar to the traditional maceration method, reducing total analysis time for the crude propolis resin from a week to just ca 1h. Principal component analysis of the EASI-MS data is shown to group samples according to the plant sources of their resins, which characterizes their geographical origin. 81 100-8