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. 2019 Oct 29;24(21):3898. doi: 10.3390/molecules24213898

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© 2019 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 gas chromatography flame-ionisation detection (GC-FID) chromatogram of amino acids standard mixture (100 umol/L) (A); Apis honey (B) and starfruit honey (C). For peak identification, 1 = Alanine; 2 = sarcosine; 3 = glycine; 4 = α-Aminobutyric acid; 5 = Valine; 6 = β-Aminoisobutyric acid; 7 = IS; 8 = Leucine; 9 = Allo-isoleucine; 10 = Isoleucine; 11 = Threonine; 12 = Serine; 13 = Proline; 14 = Asparagine; 15 = Aspartic acid; 16 = Methionine; 17 = 3-hydroxyproline; 18 = glutamic acid; 19 = Phenylalanine; 20 = α-Aminoadipic acid; 21 = Glutamine; 22 = Ornithine; 23 = Lysine; 24 = Histidine; 25 = Tyrosine; 26 = Tryptophan; 27 = Cysteine.