ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (3): 388-394.doi: 10.11843/j.issn.0366-6964.2015.03.006

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The Quality Evaluation of Different Muscles from Plateau Yak

BAO Shan-ke1,ZHANG Li2,3,KONG Xiang-ying1,WANG Li3,ZHOU Yu-chun3,SUN Bao-zhong2*,YU Qun-li3,WANG Fu-ning4,XIE Peng2,LI Hai-peng2   

  1. (1.Animal Husbandry and Scientific Research Institute of Qinghai Province,Haibei 810200,China;2.Institute of Animal Science, Chinese Academy of Agricultural Sciences,Beijing 100193,China;3.College of Food Science and Engineering,Gansu Agricultural University,Lanzhou 730070,China;4.The Farm of Unit 96351 of Chinese People’s Liberation Army,Haiyan 812200,China)
  • Received:2014-06-25 Online:2015-03-23 Published:2015-03-23

Abstract:

In order to investigate quality characteristic of different muscles from plateau yak,the cooking loss,drip loss,Warner-Bratzler shearing force,pH value,L* value,a* value and b* value of supraspinatus (SU),psoas major (PM),latissimus dorsi (LA),longissimus dorsi (LD),biceps femoris (BF),semitendinosus (ST),semimembranosus (SM) and quadriceps femoris (QF) from yak carcass were determined.It was found that there were significant differences between different muscles in quality traits except a* value (P<0.05).The PM,LA and ST had significantly higher tenderness comparing to other muscles (P<0.05) with lower shearing force values than 6 kg,while the water holding capacity of LA,ST,SM was poorer than other muscles.The ST had highest lightness and yellowness (L* values and b* values) among all muscles.The LD and ST had similar quality characteristic,while the BF,SM and QF had similar quality characteristic.There was significantly negative correlation between pH values and cooking loss,which indicated that the difference of water holding capacity among different muscles could be related to level of acidification.It was shown that different parts of muscle had significant effect on yak beef quality,and difference of water holding capacity could be attributed to level of acidification.

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