“…Peak 1 gave the mass spectrum ion at 116.0702 (C 5 H 9 NO 2 ) with MS/MS fragment of 70.0647 (C 4 H 7 N) [M+H-HCOOH] + , which was detected to be D-proline [14][15][16] [25]. Peaks 18,21,23,24,25,29,31,32,33,39,42,43,49,50,52, ] − ) were the same regular, which were identified as gallic acid [20], protocatechuic acid [23], acetylsalicylic acid [26], caftaric acid [20], gentisic acid [23], 4-hydroxybenzoic acid [27], p-coutaric acid [28], m-coumaric acid [28], coutaric acid [28], vanillic acid [27], fertaric acid [28], caffeic acid [28], desaminotyrosine [29], 2-hydroxybenzoic acid [28], 3-hydroxy-4-methoxybenzoic acid [30,31], p-coumaric acid [28], homogentisic acid [23], ellagic acid [32] and dihydrocaffeic acid [33]. Peak 79 had the major first-order mass spectrum at m/z 270.0662 (C 11 H 12 O 4 ).…”