title: Effect of low voltage electrical stimulation on biochemical and quality characteristics of Longissimus thoracis muscle from one-humped Camel (Camelus dromedaries).
abstract: The effects of electrical stimulation (90V) 20min post mortem on meat quality and muscle fibre types of four age group camels (1-3, 4-6, 7-9, 10-12 years) camels were assessed. Quality of the Longissimus thoracis at 1 and 7 days post mortem ageing was evaluated using shear force, pH, sarcomere length, myofibrillar fragmentation index, expressed juice, cooking loss and L(∗), a(∗), b(∗) colour values. Age of camel and electrical stimulation had a significant effect on meat quality of L. thoracis. Electrical stimulation resulted in a significantly (P<0.05) more rapid pH fall in muscle during the first 24h after slaughter. Muscles from electrically-stimulated carcasses had significantly (P<0.05) lower pH values, longer sarcomeres, lower shear force value, higher expressed juice and myofibrillar fragmentation index than those from non-stimulated ones. Electrically-stimulated meat was significantly (P<0.05) lighter in colour than non-stimulated based on L(∗) value. Muscles of 1-3 year camels had a significantly (P<0.05) lower shear force value, and pH, but longer sarcomere, and higher myofibrillar fragmentation index, expressed juice, and lightness colour (L(∗)) than those of the 10-12 years camels. The proportions of Type I, Type IIA and Type IIB were 25.0, 41.1 and 33.6%, respectively were found in camel meat. Muscle samples from 1-3 year camels had significantly (P<0.05) higher Type I and lower Type IIB fibres compared to those from 10-12 year camel samples. These results indicated that age and ES had a significant effect on camel meat quality.
authors.affiliation: Department of Animal and Veterinary Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Muscat, Oman.
authors.forename: I T
authors.initials: IT
authors.lastname: Kadim
authors.forename: Y
authors.initials: Y
authors.lastname: Al-Hosni
authors.forename: O
authors.initials: O
authors.lastname: Mahgoub
authors.forename: W
authors.initials: W
authors.lastname: Al-Marzooqi
authors.forename: S K
authors.initials: SK
authors.lastname: Khalaf
authors.forename: R S
authors.initials: RS
authors.lastname: Al-Maqbaly
authors.forename: S S H
authors.initials: SS
authors.lastname: Al-Sinawi
authors.forename: I S
authors.initials: IS
authors.lastname: Al-Amri