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. 2016 Jan 11;11(1):e0146607. doi: 10.1371/journal.pone.0146607

Table 1. Identification of metabolites in methanol/water phase extracts of Dendrobium stems.

No. Retention time(min) Description from best library fit Similarity%
Fatty acids (6 compounds)
1 26.68 Oleate (3TMS) 85
2 25.95 Octadecanoate (2TMS) 96
3 24.11 n-Pentadecanoate (1TMS) 90
4 22.24 Tetradecanoate (1TMS) 86
5 24.17 Hexadecanoate (1TMS) 97
6 29.33 2-Monopalmitoylglycerol (1TMS) 72
Sugars and glycosides (26 compounds)
7 30.54 Trehalose (8TMS) 97
8 30.43 Mannobiose (8TMS) 87
9 29.94 Sucrose (8TMS) 96
10 29.41 Cellobiose (8TMS) 90
11 23.06 Glucose (5TMS) 95
12 22.98 Galactose (5TMS) 98
13 26.13 Mannose (5TMS) 87
14 20.50 Ribose (4TMS) 94
15 20.15 Lyxofuranose (4TMS) 90
16 22.83 Fructose (4TMS) 95
17 22.79 Sorbopyranose (5TMS) 97
18 21.48 Levoglucosan (3TMS) 89
19 20.51 Xylose (4TMS) 93
20 18.19 Erythrose (3TMS) 85
21 21.97 Arabinose (4TMS) 89
22 21.49 Sedoheptulose (6TMS) 90
23 27.68 Allose (5TMS) 89
24 30.19 Maltose (8TMS) 81
25 24.84 Tagatose (5TMS) 85
26 29.79 Turanose 87
27 24.24 Talose (5TMS) 93
28 26.19 Rhamnopyranose (4TMS) 81
29 27.45 Glucopyranoside (4TMS) 92
30 25.72 2-O-Glycerol-α-d-galactopyranoside (6TMS) 96
31 27.68 Mannopyranoside (4TMS) 86
32 25.09 Sorbopyranoside (4TMS) 98
Organic acids (35 compounds)
33 19.35 2-Keto-l-gluconate (5TMS) 92
34 24.10 Gluconate (5TMS) 92
35 27.78 Glucuronate (4TMS) 91
36 24.51 Glucarate (4TMS) 91
37 24.05 Galactarate (4TMS) 87
38 11.85 Pyruvate (2TMS) 85
39 16.37 Fumarate 94
40 19.35 2-ketoglutarate (3TMS) 92
41 19.26 Threonate (3TMS) 98
42 23.37 Mannonate (4TMS) 76
43 21.52 Ribonate (4TMS) 95
44 28.46 Benzoate 87
45 19.65 Phenylacetate 95
46 15.93 Succinate (2TMS) 97
47 19.74 Tartarate (2TMS) 86
48 13.26 Oxalate 90
49 13.88 Butanoate 82
50 12.72 Propanoate 89
51 19.34 Pentanoate 85
52 13.01 Hexanoate 90
53 12.02 Acetate 87
54 17.36 Nonanoate 85
55 14.72 Carbamate 90
56 29.27 Phthalate 87
57 32.50 Isophthalate 82
58 31.30 Terephthalate 90
59 26.05 1-Naphthalenesulfonate 99
60 20.81 2-Butenedioate (2TMS) 84
61 16.54 2-Butenoate 75
62 22.67 Glutarate 86
63 22.60 1-Cyclohexene-1-carboxylic acid (3TMS) 95
64 11.89 trans-2,3-Dimethylacrylic acid 85
65 22.70 Citrate (3TMS) 92
66 27.79 Galacturonate (5TMS) 90
67 22.99 Arabino-Hexonate (4TMS) 87
Amino acids (16 compounds)
68 12.75 Alanine 98
69 14.55 Valine 92
70 15.38 Norleucine 82
71 15.69 Isoleucine (1TMS) 87
72 29.19 Leucine 79
73 15.73 Proline (1TMS) 94
74 15.87 Glycine (2TMS) 94
75 16.65 Serine (2TMS) 89
76 17.01 Threonine (3TMS) 93
77 18.69 Aspartate (2TMS) 95
78 19.86 Glutamate (2TMS) 92
79 21.59 Glutamine (3TMS) 92
80 19.78 Asparagine 92
81 19.95 Phenylalanine (2TMS) 93
82 22.41 Methionine 91
83 22.55 Allylglycine 90
Amines and amides (8 compounds)
84 9.66 Ethanamine 80
85 10.66 Triethylamine 87
86 20.94 1,4-Butanediamine (4TMS) 74
87 18.90 Benzamide 87
88 14.88 Benzenesulfonamide 86
89 19.97 Lysergamide 89
90 26.33 Hexadecanamide 87
91 28.11 Octadecanamide 80
Alcohols (11 compounds)
92 15.44 Glycerol (3TMS) 93
93 18.62 Threitol (4TMS) 94
94 23.51 Galactitol (6TMS) 91
95 21.59 Arabitol 89
96 22.69 Myo-inositol (6TMS) 81
97 23.79 Glucitol 90
98 23.38 Mannitol (6TMS) 82
99 17.04 1,2-Propanediol 90
100 15.79 1,2-Butanediol (2TMS) 80
101 12.32 Benzenemethanol 94
102 28.12 Ethanol 88
Alkanes (19 compounds)
103 10.71 Ethane 87
104 9.53 Butane 89
105 22.85 Hexane 90
106 15.36 Heptane 87
107 10.82 Octane 90
108 11.24 Decane 86
109 12.07 Nonane 87
110 12.73 Undecane 89
111 16.41 Dodecane 85
112 16.51 Tridecane 85
113 16.03 Tetradecane 84
114 19.01 Pentadecane 87
115 20.72 Hexadecane 90
116 19.06 Heptadecane 92
117 19.62 Nonadecane 77
118 18.66 Eicosane 80
119 25.79 Heneicosane 84
120 24.21 Tetracosane 70
121 21.56 Heptacosane 86
Ketones (3 compounds)
122 20.76 Ethanone 98
123 23.98 Psicose (6TMS) 92
124 24.96 Propan-1-one 85
Others (15 compounds)
125 24.20 Sulfurous acid 75
126 16.05 Phosphate (3:1) 95
127 15.06 Benzene 86
128 14.91 Urea 93
129 20.63 Phenol 85
130 18.44 Piperidine 73
131 10.44 α-Pinene 87
132 18.72 Cadaverine (3TMS) 70
133 28.97 Oleanitrile 90
134 14.29 1-Piperidinecarboxaldehyde 82
135 11.47 Benzonitrile 95
136 30.94 Coumarin 83
137 29.46 1,2-Benzenediol 83
138 13.32 Quinoline 87
139 29.44 Thiophene 80