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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The effect of operation parameters on derivatization reaction: (the yield of lactic acid—62 μg/g, glycolic acid—40 μg/g and malic acid—30 μg/g in the example sample). Temperature (a), Time (b), derivatization agent (MTBSTFA) (c). Results are expressed as means ± standard error (n = 6).