Two proteins prepared from defatted Antarctic krill (Euphausia superba) powder: Composition, structure and functional properties

Novel Ca-Chelating Peptides from Protein Hydrolysate of Antarctic Krill (Euphausia superba): Preparation, Characterization, and Calcium Absorption Efficiency in Caco-2 Cell Monolayer Model

“…By Protein/Peptide Sequencer, the fourteen Ca-chelating peptide (ACP1-ACP14) sequences were identified as Ala-Lys (AK, ACP1), Glu-Ala-Arg (EAR, ACP2), Ala-Glu-Ala (AEA, ACP3), Val-Glu-Arg-Gly (VERG, ACP4), Val-Ala-ESr (VAS, ACP5), Gly-Pro-Lys (GPK, ACP6), Ser-Pro (SP, ACP7), Gly-Pro-Lys-Gly (GPKG, ACP8), Ala-Pro-Arg-Gly-His (APRGH, ACP9), Gly-Val-Pro-Gly (GVPG, ACP10), Leu-Glu-Pro-Gly-Pro (LEPGP, ACP11), Leu-Glu-Lys-Gly-Ala (LEKGA, ACP12), Phe-Pro-Pro-Gly-Arg (FPPGR, ACP13), and Gly-Glu-Pro-Gly (GEPG, ACP14), and their MWs were determined as 217. 27 3).…”

“…Antarctic krill (Euphausia superba) is considered the world's largest resource of animal proteins due to its huge biomass (342-356 million tons) and high biological value [24,25]. Therefore, Antarctic krill proteins are thought of as a high-quality resource for future marine healthy foods and functional products, and the studies on the preparation and activity of BPs from Antarctic krill proteins have gathered wide attention [26,27]. For example, phosphorylated peptides from Antarctic krill could ameliorate osteoporosis and alleviate liver fibrosis [25,28]; Antioxidant peptides, such as EYEA, SNVFDMF, QYPPMQY, AMVDAIAR, and LQP, could scavenge radical, protect liver cells, and liver organism against oxidative stress [29][30][31]; VLGYIQIR and LVDDHFL could be appropriate for novel mineral supplements [32,33]; SSDAFFPFR and SNVFDMF could ameliorate the memory impairment of mice induced by scopolamine [34]; WF, FAS, KVEPLP, and PAL presented strong ACE and/or DPP-IV inhibitory ability [35,36].…”