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. 2018 Sep 1;10(9):1204. doi: 10.3390/nu10091204

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© 2018 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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Representative high-performance liquid chromatography (HPLC) chromatograms of the Metabolaid^® (MetA). HPLC chromatograms of two extract mixtures at 320 and 520 nm. Delphinidin-3-o-sambubioside, cyanidin-3-o-sambubioside, verbascoside, and isoverbascoside appeared at retention times of 7.1, 8.8, 13.4, and 14.5 min, respectively.