Benefits of using protic ionic liquids to analyze the antioxidant capacity of acerola (Malpighia emarginata DC)


The purpose of this study is to evaluate the antioxidant activity of the fruit Acerola (Mapighia emarginata) and study the extraction of bioactive compounds in the fruit using Ionic Liquids protic (PIL´s), recognized green solvents . The usual organic solvents are environmentally aggressive and cause problems to human health. There is great interest in new technologies that reduce these problems. Our main interest is to examine the effect of the addition of ionic liquids mixed with protic organic solvents generally used in these analyzes. Therefore, three analytical methods were initially used: DPPH, ABTS and FRAP. For the extraction solvents methanol and mixtures of methanol with 10% (w / v) of various protic Ionic Liquids were used: (2HEAA, 2HEAPr; 2HDEAA, 2HDEAPr, 2HDEABe and 2HDEASa). High levels of antioxidant activity (AOA) were obtained from the ABTS method, which is considered an excellent method of evaluation. the antioxidant action of the fruits of Acerola (Malpighia emarginata) was confirmed by all the methods used. Future work should include new protic ionic liquids with different characteristics. The purpose of this is to assess if other solvents have better results. Also, increase the percentage of green solvent may be interesting to reduce environmental risks in extractions.


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