search for




 

Determination of Water-holding Capacity of Porcine Musculature Based on Released Water Method Using Optimal Load
Korean J. Food Sci. An. 2018;38:823-828
Published online August 31, 2018;  https://doi.org/10.5851/kosfa.2018.e18
© 2018 Korean Society for Food Science of Animal Resources

Seon-Tea Joo1,2,*

1Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea
2Division of Applied Life Science (BK21+), Gyeongsang National University, Jinju 52828, Korea
Correspondence to: Seon-Tea Joo
Division of Applied Life Science (BK21+), Gyeongsang National University, Jinju 52828, Korea
Tel: +82-55-772-1943
Fax: +82-55-772-1949
E-mail: stjoo@gnu.ac.kr
Received July 10, 2018; Revised July 17, 2018; Accepted July 19, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The purpose of this study was to evaluate the suitability of the released water (RW) method for measuring water-holding capacity (WHC) by pressure and filter-paper absorption within two thin plastic films. One hundred fifty pork loins with considerable variations in WHC (three pork qualities: PSE, pale, soft, and exudative; RFN, reddish-pink, firm, and nonexudative; and DFD, dark, firm, and dry; 50 pork loins in each pork quality group) were used to measure drip loss (DL)% and RW % after applying different loads (1.5, 2.0, 2.5, 3.0 and 3.5 kg). Percentages of DL and RW were significantly (p<0.05) different among pork quality groups. The RW % of 2.5 kg load sample was significantly (p<0.05) higher than that of 2.0 kg or 1.5 kg load sample. However, there were no significant (p>0.05) differences in RW % among 2.5 kg, 3.0 kg, and 3.5 kg load samples for all three pork quality groups. The RW % was highly and positively correlated (r>0.95; p<0.001) with DL %. The highest correlation was observed between DL % and RW % of 2.5 kg load sample (r=0.97; p<0.001). Among all RW loads within each quality groups, the highest correlation between DL % and RW % was observed for 2.5 kg load sample (r=0.43, 0.66, and 0.46 for PSE, RFN and DFD quality groups, respectively, p<0.001). These results imply that applying 2.5 kg load is the best for determination of RW %. It is recommended as a reference method to assess DL % of pork muscles.
Keywords : released water, filter-paper absorption water, water-holding capacity, drip loss, pork quality


October 2018, 38 (5)