|
KMID : 0613820150250070740
|
|
Journal of Life Science
2015 Volume.25 No. 7 p.740 ~ p.747
|
|
|
Changes of Meat Quality and Antioxidation Activity in the Loin and Ham of Korean Native Black Pigs during Frozen Storage
|
|
Gil Ju-Ae
Kim Dong-Wook
Kim Hee-Jin
Yoon Ji-Yeol
Pak Jae-In
Park Beom-Young
Ham Jun-Sang
Im Sung-Guk
|
|
|
Abstract
|
|
|
|
This study was carried out to evaluate changes in the meat quality and antioxidation activity in the loin and ham of Korean Native Black Pigs (KNBP) during frozen storage at -18℃ for 150 days. The pH value of the loin was decreased as storage days progressed, while the pH value of the ham showed no consistent changes with storage days. The lightness (L*) of the loin did not show any significant reduction until day 120, whereas L* of the ham was significantly declined throughout the storage period (p<0.05). The redness (a*) values of the loin and ham were significantly decreased as storage progressed. The water holding capacity of the loin was decreased by day 30 and that value was maintained until the end of storage. The initial total numbers of microorganisms in the loin and ham were 4.88 and 5.16 Log CFU/g, respectively and these numbers were significantly decreased by day 30 (p<0.05). The levels of 2-thiobarbituric acid reactive substances (a measurement of lipid oxidation) in the loin and ham ranged from 0.057-0.069 and 0.052-0.087 mg MDA/kg meat, respectively, until storage day 150. Volatile basic nitrogen values of the loin and ham ranged from 15.13-16.55 and 16.05-16.23 mg%. Oxygen radical absorbance capacities and carnosine contents of the loin and ham were significantly decreased during frozen storage for 3 months (p<0.05). In summary, the meat quality of the loin and ham from KNBP was somewhat decreased during frozen storage. However, the levels of antioxidants and dipeptides with antioxidant activity were significantly decreased in pork loin and ham during frozen storage.
|
|
|
KEYWORD
|
|
|
Antioxidation, carnosine, frozen storage, Korean Native Black Pigs (KNBP), quality
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|