title: [Isolation and mass spectrometric analysis of antioxidant peptides from enzymatic hydrolysates of roasted pills of Asini Corii Colla].
abstract: A fraction named GFC-1 with high antioxidant activities in vitro was isolated from the enzymatic hydrolysates of roasted pills of Asini Corii Colla, and the peptides in this fraction were identified. The enzymatic hydrolysates were isolated and purified with anion exchange chromatography and Sephadex G-25 filtration chromatography successively. GFC-1, a fraction isolated from the hydrolysates, exhibited the highest DPPH and ABTS scavenging capacity (DPPH 47. 95% at 2.0 g x L(-1) and ABTS 97.20% at 0.40 g x L(-1). Nine peptides from GFC-1 were identified by LC-ESI-MS/MS coupled with TurboSEQUEST search software and Swiss-Prot data base, and a high repetition core sequence GPAGPP*GPP* was also found.
authors.affiliation: School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China.
authors.forename: Xiao-Chen
authors.initials: XC
authors.lastname: Li
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Yan
authors.forename: Zhi-Min
authors.initials: ZM
authors.lastname: Wang
authors.forename: Qi-Wei
authors.initials: QW
authors.lastname: Zhang
authors.forename: Jian-Ping
authors.initials: JP
authors.lastname: Gao
authors.forename: Liang-Mian
authors.initials: LM
authors.lastname: Chen
authors.forename: Jin-Yu
authors.initials: JY
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Tong
authors.forename: Gui-Feng
authors.initials: GF
authors.lastname: Zhang
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000737:chemistry* / Q000302:isolation & purification; D018397:Equidae; D006868:Hydrolysis; D013058:Mass Spectrometry; D010455:Peptides / Q000737:chemistry* / Q000302:isolation & purification; D011492:Protein Hydrolysates / Q000737:chemistry*; D012867:Skin / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010455:Peptides; D011492:Protein Hydrolysates