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. 2020 Jan 21;25(3):454. doi: 10.3390/molecules25030454

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© 2020 by the authors.

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/).

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HPLC (high-performance liquid chromatography) chromatograms of epigallocatechin gallate (EGCG) standard (a), phenolic compounds from lipid extracted microalgae (LEM) extracted by water, (b) and by ethanol under optimized UAE condition (c). (a) Chromatogram of EGCG standard solution in water (0.1 mg/mL), (b) chromatogram of EGCG from LEM extracted by UAE using water (74.4 °C, 59.6 min, water), (c) chromatogram of EGCG from LEM extracted by UAE using ethanol (74.4 °C, 59.6 min, 55.4% ethanol).