Article (Scientific journals)
Contribution of calpain to protein degradation, variation in myowater properties and the water-holding capacity of pork during postmortem ageing
Qian, Shuyi; Li, Xia; Wang, Hang et al.
2020In Food Chemistry, 324 (126892)
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Keywords :
Calpain; Water-holding capacity; Postmortem storage; Protease inhibitors; Myowater distribution and mobility
Abstract :
[en] To investigate calpain’s effect on protein degradation, myowater properties, and the water-holding capacity (WHC), porcine longissimus muscles were incubated with control buffer, PD150,606 (calpain-specific inhibitor) and MG-262 (multiple-protease inhibitor) and assigned to an ageing period of 1, 4 or 7 d. Over 7 d of storage, no significant differences (P > 0.05) were observed in desmin or integrin expression between the MG-262 and PD150,606 groups, which indicated that calpain played a major role in protein proteolysis. Compared to those in the control group, muscle samples subjected to PD150,606 and MG-262 exhibited higher water mobility and a poorer WHC. Additionally, there were no significant differences in myowater properties or the WHC between the two groups at 1 d postmortem (P > 0.05). Calpain regulated the distribution and mobility of myowater, which contributed to a higher WHC in the early postmortem period (before 4 d), but other proteases tended to take over at a later stage.
Disciplines :
Food science
Author, co-author :
Qian, Shuyi  ;  Université de Liège - ULiège > Terra
Li, Xia
Wang, Hang
Wei, Xiuli
Mehmood, Waris
Zhang, Chunhui
Blecker, Christophe ;  Université de Liège - ULiège > Département GxABT > SMARTECH
Language :
English
Title :
Contribution of calpain to protein degradation, variation in myowater properties and the water-holding capacity of pork during postmortem ageing
Publication date :
2020
Journal title :
Food Chemistry
ISSN :
0308-8146
eISSN :
1873-7072
Publisher :
Elsevier, Netherlands
Volume :
324
Issue :
126892
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 16 June 2020

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