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Improvement of physicochemical quality of fresh pork loin during storage by natural polyphenol diet supplementation

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Oregano oil and ground cranberry pulp supplements were added to the diets of finishing pigs to determine their physicochemical effects on fresh loin during storage. Two concentrations of oil (250 and 500 mg/kg) and three of cranberry (5, 10 and 20 g/kg) were tested according to a factorial experimental design. The control group did not receive any supplements. The meat was vacuum packed and analyzed after 0, 23, 45 and 60 days of storage at < 4°C. Samples were re-packaged under aerobic conditions after 0 or 23 days and then analyzed after 4, 8 and 12 days. The pH was determined on the Longissimus dorsi muscle between the 3rd and 4th last ribs, 45 min and 24 h after slaughter. Color was also analyzed for each sample and drip loss evaluated only on day 0. The results showed that no treatment had any effect on the pH of the meat, whether at 45 min or 24 h after slaughter (P>0.05). The evaluation of the color showed, during the 60 days of storage, a significant difference between the control and the different treatments for L*, a*, b* (P<0.05) for samples stored under anaerobic conditions. The lowest drip loss was obtained with 10 g/kg of cranberry pulp (P <0.05).

58th International Congress of Meat Science and Technology, (2012)
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Oregano oil , Cranberry , Meat quality
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article dans une conférence