Chemical composition of skeletal muscle

Abstract

MATERIAL AND METHODSDuring necropsy, 53 fragments of muscles were excised from 41 corpses, less than 24 hours after death. Os these samples, 29 were of anterior tibial muscle (26 males and 3 females: 19 white, 9 mulattoes and 1 negro, ages varying from 4 to 63 years); the remaining 12 samples comprised deltoid and pectoral major muscles (10 males and 2 females: 7 white and 5 mulattoes, ages ranging from 9 to 60 years).The causes of death included: craniocerebral trauma of several types (21 cases), polytrauma (9), drowning (4), post-traumatic internal hemorrhage (4), heart attack (1), asphyxia (1) and lesions in the neck produced by shot-gun (1).The muscle samples were dried in an oven at 105°C until constant weight. These dry tissues were incinerated in a furnace regulated potentiometrically at 550 D C during approximately 12 hours (overnight). Ash solutions were prepared using 2N hydrochloric acid.

Growth in marine mammals: a review of growth patterns, composition and energy investment

“…Tissues are primarily comprised of protein, lipid, water and carbohydrates. For most vertebrates, the chemical composition of skeletal muscle is about 70–80% water, 20–30% protein and 1–2% lipid ( Anghihan et al, 1969 ; Kim, 1974 ; Listrat et al, 2016 ). The protein content of marine mammal muscle is on par with those reported for other vertebrates, ranging between approximately 18.2–26.9% (fin whale [ Balaenoptera physalus ], sei whale [ Balaenoptera borealis ] and minke whale [ Balaenoptera acutorostrata ]; Lockyer et al, 1985 ; Víkingsson et al, 2013 ; bowhead whale [ B. mysticetus ]; O’Hara et al, 2004 ; sperm whale; Watanabe and Suzuki, 1950 ; harp seal [ Pagophilus groenlandicus ] and hooded seal [ Cystophora cristata ]; Brunborg et al, 2006 ; Cape fur seal [ Arctocephalus pusillus ]; Koep et al, 2007 ).…”