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Table 1 Positive molecular ions analysis of HiPMO1 reaction products hydrolyzed by beta-glucuronidase and beta-glucosidase

From: Polysaccharide monooxygenase-catalyzed oxidation of cellulose to glucuronic acid-containing cello-oligosaccharides

m/z

Molecular ions of potential products

m/z

Molecular ions of potential products

102

180 + Na+ + H+/2

181

180 + H+

103

182 + Na+ + H+/2

184

192 + 174 + 2H+/2

106

210 + H+ + H+/2

185

194 + 174 + 2H+/2

120

192 + 2H+ + HCOOH/2

186

196 + 174 + 2H+/2

122

176 + 2NH4+ + CH3OH/2

187

180 + 192 + 2H+/2

123

210 + 2NH4+/2

191

174 + 174 + 2H+ + CH3OH/2

145

194 + 2NH4+ + CH3COOH/2

193

192 + H+

149

180 + 2NH4+ + HCOOH + 2H2O/2

195

194 + H+

194 + 2NH4+ + CH3OH + 2H2O/2

203

180 + Na+

152

180 + 2Na+ + CH3COOH + H2O/2

206

192 + 174 + 2Na+/2

194 + 2Na+ + HCOOH + H2O/2

210

192 + NH4+

153

210 + 2NH4+ + CH3COOH/2

212

194 + NH4+

192 + 2NH4+ + H2O + CH3COOH/2

214

196 + NH4+

158

210 + 2Na+ + CH3COOH/2

215

192 + Na+

192 + 2Na+ + H2O + CH3COOH/2

216

180 + NH4+ + H2O

161

180 + 2Na+ + CH3COOH + 2H2O/2

217

194 + Na+

194 + 2Na+ + HCOOH + 2H2O/2

228

210 + NH4+

163

196 + Na+ + H+ + CH3COOH + HCOOH/2

232

196 + NH4+ + H2O

210 + Na+ + H+ + 2HCOOH/2

233

210 + Na+

166

210 + 2H+ + 2CH3COOH/2

254

176 + NH4+ + CH3COOH

192 + 2H+ + H2O + 2CH3COOH/2

256

178 + NH4+ + CH3COOH

167

196 + 2Na+ + CH3COOH + CH3OH/2

192 + NH4+ + HCOOH

210 + 2Na+ + HCOOH + CH3OH/2

257

196 + H+ + CH3COOH

168

180 + 2NH4+ + 2CH3COOH/2

210 + H+ + HCOOH

194 + 2NH4+ + HCOOH + CH3COOH/2

264

210 + NH4+ + 2H2O

170

180 + 2NH4+ + 2HCOOH + CH3OH/2

265

210 + Na+ + CH3OH

194 + 2NH4+ + HCOOH + 2CH3OH/2

196 + Na+ + HCOOH

173

194 + 2Na+ + CH3COOH + HCOOH/2

267

174 + H+ + 2HCOOH

180 + 2Na+ + 2CH3COOH/2

272

194 + NH4+ + CH3COOH

174

156 + NH4+

273

194 + H+ + CH3COOH + H2O

175

174 + H+

274

196 + NH4+ + CH3COOH

178

180 + 174 + 2H+/2

210 + NH4+ + HCOOH

179

178 + H+

294

180 + NH4+ + CH3COOH + 2H2O

180

180 + 178 + 2H+/2

194 + NH4+ + HCOOH + 2H2O

  1. The products were analyzed by Full Scan LC–MS in positive mode. Data are from Additional file 1: Figure S5. Because of the presence of NH3, CH3OH, HCOOH, and CH3COOH in the sample solutions, the products formed adduct ions with them. Glucose (m/z 180+), gluconic acid (m/z 196+), gluconic acid lactone (m/z 178+), glucuronic acid (m/z 194+), glucuronic acid lactone (m/z 176+), saccharic acid (m/z 210+), saccharic acid lactone (m/z + 192), reduced Vc (m/z 176+), oxidized Vc (m/z 174+), oxidized and dehydrate Vc (m/z 156+)