Can pale, soft, exudative pork be prevented by postmortem sodium bicarbonate injection?

Citation
Rg. Kauffman et al., Can pale, soft, exudative pork be prevented by postmortem sodium bicarbonate injection?, J ANIM SCI, 76(12), 1998, pp. 3010-3015
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Animal Sciences
Journal title
JOURNAL OF ANIMAL SCIENCE
ISSN journal
0021-8812 → ACNP
Volume
76
Issue
12
Year of publication
1998
Pages
3010 - 3015
Database
ISI
SICI code
0021-8812(199812)76:12<3010:CPSEPB>2.0.ZU;2-P
Abstract
Previous attempts at eliminating the problem of PSE pork by genetic selecti on or rapid postmortem cooling have been only partially successful. A new a pproach, namely, postmortem injection of sodium bicarbonate (SBC), was test ed on halothane-positive gilts. Sixteen pigs were used to establish a suita ble SBC concentration. At approximately 15 min after death, the longissimus of one side of the carcass was injected with 10% (by weight) of .2 to .4 M SBC solutions containing .7% NaCl (wt/vol). All concentrations resulted in a higher ultimate pH, improved muscle color, and reduced drip loss. In a s econd experiment, with 23 pigs, .3 M SBC was injected into the longissimus and the biceps femoris at either 15 min or 24 h after death and with or wit hout inclusion of .7% NaCl (wt/vol). Compared with controls, the 15-min SBC + NaCl injected samples had darker color (L* of 47 vs 53 in controls), hig her ultimate pH (5.6 vs 5.3), lower drip loss (5% vs 10%), and increased pr otein solubility (140 vs 115 mg/g). Injection at 24 h reduced drip loss (fr om 10% to 5.7%) but did not correct the color defect. The SEC alone and SEC + NaCl treatments had essentially the same effects in reducing drip loss, increasing ultimate pH, and improving color; but the SBC-NaCl injected samp les had improved juiciness and flavor compared with SBC. Early postmortem s odium bicarbonate injection seems to prevent the development of PSE pork wh en injected into carcasses of halothane-sensitive pigs.