Influence of malic acid marination on characteristics of connective tissue and textural properties of beef Semitendinosus muscle

文献类型： 外文期刊

第一作者： Wang, Fulong

作者： Wang, Fulong;Tang, Honggang

作者机构：

关键词： Malic acid; IMCT; microstructure; DSC; decorin; secondary structure

期刊名称：CYTA-JOURNAL OF FOOD （ 影响因子：2.255； 五年影响因子：2.381 ）

ISSN： 1947-6337

年卷期： 2018 年 16 卷 1 期

页码：

收录情况： SCI

摘要： Semitendinosus muscle marinated in 0.5% acid showed a significant decrease in the shear force. To explore the possible reasons responsible for tenderness of acid-treated beef, the changes in intramuscular connective tissue (IMCT) were taken into consideration. The thicknesses of primary perimysium (PP) and secondary perimysium (SP) decreased to 19.86 and 34.99 mu m, respectively. Denaturations of IMCT were exhibited by decreased onset (To) and peak (Tp) temperature, and by the increase in collagen heat solubility. A significant increase in intensity ratios between 3 and 24 h group (p < 0.05) meant that the dissociation of decorin (DCN) enhanced gradually along with marinating time. Meanwhile, limited transitions between 310-helix, anti aggregated strands, and turn were observed, especially a significant decrease (p < 0.05) in turn. The dissociation of DCN and the changes in second structures could partially contribute to the initial denaturation of collagen and reduce TO and TP, resulting in the decrease in shear force.

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