Abstract
Lamb carcasses were subjected to low-voltage electrical stimulation (ES; 28 V, 60 Hz) within 5 min postmortem (PM). After ES, the longissimus thoracis (LT) and semimembranosus (SM) muscles were removed to investigate subsequent biochemical changes. The pH values of the ES muscles declined rapidly until the 1(st) 3 h PM (p < 0.05). The activities of μ-calpain and calpastatin in ES muscles decreased significantly after 10 h PM (p < 0.05). Both ES LT and SM muscles tended to have lower shear-force values, which suggested ES might accelerate activation of calpains as well as glycolytic rate, thereby improving muscle tenderness. Differences in titin and troponin-T degradation between treatments were also observed with time PM.
| Original language | English |
|---|---|
| Pages (from-to) | 786-790 |
| Number of pages | 5 |
| Journal | Journal of Food Science |
| Volume | 65 |
| Issue number | 5 |
| Publication status | Published - 2000 Sep 30 |
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Keywords
- Calpains
- Glycolytic rate
- Low-voltage electrical stimulation
- Tenderness
- Titin
- Troponin-T
ASJC Scopus subject areas
- Food Science
Cite this
Low-voltage electrical stimulation effects on proteolysis and lamb tenderness. / Lee, S.; Polidori, P.; Kauffman, R. G.; Kim, Byoung-Chul.
In: Journal of Food Science, Vol. 65, No. 5, 30.09.2000, p. 786-790.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Low-voltage electrical stimulation effects on proteolysis and lamb tenderness
AU - Lee, S.
AU - Polidori, P.
AU - Kauffman, R. G.
AU - Kim, Byoung-Chul
PY - 2000/9/30
Y1 - 2000/9/30
N2 - Lamb carcasses were subjected to low-voltage electrical stimulation (ES; 28 V, 60 Hz) within 5 min postmortem (PM). After ES, the longissimus thoracis (LT) and semimembranosus (SM) muscles were removed to investigate subsequent biochemical changes. The pH values of the ES muscles declined rapidly until the 1(st) 3 h PM (p < 0.05). The activities of μ-calpain and calpastatin in ES muscles decreased significantly after 10 h PM (p < 0.05). Both ES LT and SM muscles tended to have lower shear-force values, which suggested ES might accelerate activation of calpains as well as glycolytic rate, thereby improving muscle tenderness. Differences in titin and troponin-T degradation between treatments were also observed with time PM.
AB - Lamb carcasses were subjected to low-voltage electrical stimulation (ES; 28 V, 60 Hz) within 5 min postmortem (PM). After ES, the longissimus thoracis (LT) and semimembranosus (SM) muscles were removed to investigate subsequent biochemical changes. The pH values of the ES muscles declined rapidly until the 1(st) 3 h PM (p < 0.05). The activities of μ-calpain and calpastatin in ES muscles decreased significantly after 10 h PM (p < 0.05). Both ES LT and SM muscles tended to have lower shear-force values, which suggested ES might accelerate activation of calpains as well as glycolytic rate, thereby improving muscle tenderness. Differences in titin and troponin-T degradation between treatments were also observed with time PM.
KW - Calpains
KW - Glycolytic rate
KW - Low-voltage electrical stimulation
KW - Tenderness
KW - Titin
KW - Troponin-T
UR - http://www.scopus.com/inward/record.url?scp=0033827806&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033827806&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033827806
VL - 65
SP - 786
EP - 790
JO - Journal of Food Science
JF - Journal of Food Science
SN - 0022-1147
IS - 5
ER -