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Published on: December 25, 2016
Chemical property, bioactive constituent and volatile compound changes of beef tallow during an improved
Li Zhou1, Meiyu Zheng1, Tianyu Zhang1
1Key Laboratory of Edible Oil Quality and Safety, State Administration for Market Regulation, School of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China; Grain and Oil Resources Comprehensive Exploitation and Engineering Technology Research Center of State Administration of Grain, College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, 430023, China.
Abstract:
Beef tallow, prized for its unique aroma, is subjected to essential refining procedures to generate high-quality tallow by eliminating impurities and preserving the flavor profile. An innovative refining technique for beef tallow was introduced in this study, with a focus on flavor preservation through the utilization of enzymatic degumming, alkali deacidification, and adsorbent bleaching technologies. These methods led to reductions in phospholipid levels (< 45 mg/kg), free fatty acids (93.0 %), and pigments (up to 85.6 %). Alterations in fatty acid profiles were observed, accompanied by a significant 41.1 % reduction in tocopherol antioxidants, resulting in a decreased oxidation induction time of 2.58 h during beef tallow refining. Following refinement, cholesterol content decreased by 34.2 % to 30.4 mg/100 g. Minimal alterations in the flavor profile of beef tallow were identified through further assessment using electronic nose and HS-SPME-GC-MS methodologies, offering valuable insights into beef tallow refining techniques and its distinctive flavor characteristics.
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