Quality analysis of Yak Qula in different areas

In order to investigate the quality characteristics and give a comprehensive evaluation of Yak Qula in different areas. Yak Qula as the research materials collected from main producing areas,and the absorbance,chromaticity,nutrition and antioxidant index were measured and analyzed.The result showed that there was a big difference in colored,nutrition and oxidation index of Yak Qula in different areas. The color of Qula from Sichuan,Xinjiang and Tibet were better than others,while the a*and b*value from Tibet were 3.4 and 31.3,which were the lowest; More than 70% protein and low fat were contented of Qula from Yunnan,Xinjiang,Qinghai and Gansu,which showed that they had better nutritional quality; The peroxide value( POV) and thiobarbituric acid reactive substances value( TBARS) from Sichuan,Xinjiang and Zangnan were lower than any other regions and the oxidation was lower. The Qula from different regions of Gansu were also measured and analyzed,the color and nutritional quality from Xiahe were better than others,Qula from Luqu had low oxidation and the POV and TBARS value were 0.46 meq / kg and 1.42 mg / kg.Therefore,comprehensive evaluated,Qula from Sichuan,Hezuo and Xiahe had an optimal color quality,and Tibet,Yunan,Xijiang,Qinghai and Xiahe had a better nutritional quality,Zangnan and Luqu had a low oxidation.