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Characterization of free oligosaccharides from garden cress seed aqueous exudate using PGC LC-MS/MS and NMR
P Lijina1, J R Manjunatha2, B S Gnanesh Kumar1
1Department of Biochemistry, CSIR-Central Food Technological Research Institute (CFTRI), Mysuru, 570020, Karnataka, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
Abstract:
Garden cress seeds produces mucilage that has found various food applications, however, there is little information on the free oligosaccharides (FOS) contents in these seeds. Herein, we explored the presence of FOS in cress seed aqueous exudate. PGC-LC MS/MS analysis indicated the presence of mainly hexose containing oligosaccharides such as raffinose, stachyose and verbascose belonging to raffinose family of oligosaccharides (RFOs). In addition, minor fraction of planteose, isomeric tri- and tetrasaccharides were also observed. Further, the structural confirmation of the abundant tri- and tetrasaccharide were obtained through 1D and 2D NMR analysis. Thus, the RFOs presence in cress seeds would enhance its bio-functionalities.
