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RISS 인기검색어
- 검색키워드
- 저자 : Yadong Zheng (검색결과 4 건)
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Xu, Peng,Zheng, Yadong,Zhu, Xiaoxu,Li, Shiyi,Zhou, Cunliu Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.6
Objective: To evaluate the effects of L-lysine (Lys)/L-arginine (Arg) on lipid and protein oxidation of emulsion sausage during storage and its possible mechanism. Methods: Four samples were prepared based on the presence or absence of additional sodium isoascorbate, Lys, or Arg: sample A (control), sample B (0.05 g of sodium isoascorbate), sample C (0.4 g of Lys), and sample D (0.4 g of Arg). Peroxide value (POV), thiobarbituric reactive substances (TBARS), protein carbonyls and thiols were measured. 2,2-Diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radical-scavenging, ferrous ion-chelating ability were also measured. Results: Compared with the control, the sample treated with sodium isoascorbate, Lys or Arg had significantly lower POV during the initial 20 days, TBARS during the initial 15 days. Protein carbonyls were significantly lower compared Sample B, C, and D with A during the later storage (10 to 25 days); basically, protein thiols became lower during storage when the samples were treated with sodium isoascorbate, Lys, or Arg. Both Lys and Arg had weak reducing power but strong ferrous ion-chelating activity and DPPH radical- and hydroxyl radical-scavenging activity. Conclusion: Both Lys and Arg effectively inhibited the oxidation of lipids and proteins in emulsion sausage by scavenging free radicals and chelating ferrous ions. The results obtained may be favorable for the prevention of lipid and protein oxidation during processing and storage of meat products.
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Effects of L-lysine on thermal gelation properties of chicken breast actomyosin
Zhen Lei,Yuan Fu,Yadong Zheng,Peng Xu,Cunliu Zhou 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.3
The effects of L-lysine (L-Lys) on the water holding capacity (WHC) and texture of actomyosin (AM) gel and the possible mechanisms were investigated. L-Lys increased the WHC and hardness of the AM gel. These effects may be related to the even and continuous microstructure of the gel according to the scanning electron microscopy analysis. Furthermore, L-Lys increased the surface hydrophobic residues and the reactive sulfhydryl groups. L-Lys decreased the storage modulus at the first transition temperature but increased it at the second transition temperature and the third transition enthalpy. These results suggested that L-Lys varied the thermal behaviors and the microstructure of the AM gel by increasing the surface hydrophobicity and reactive sulfhydryl groups, ultimately contributing to the increased WHC and hardness. The changes in pH did not fully explain the results from the present study. The results were useful for understanding previous findings and may serve as a reference for the preparation of reduced-sodium and phosphate-free meat products.
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Wei-Li Luo,Hui Wang,Yadong Li,Xing Liang,Tongyi Zheng 국제구조공학회 2022 Steel and Composite Structures, An International J Vol.42 No.5
In this paper, a vibration-based method using the change ratios of modal data and the experience-based learning algorithm is presented for quantifying the position, size, and interface layer of delamination in laminated composites. Three types of objective functions are examined and compared, including the ones using frequency changes only, mode shape changes only, and their combination. A fine three-dimensional FE model with constraint equations is utilized to extract modal data. A series of numerical experiments is carried out on an eight-layer quasi-isotropic symmetric (0/-45/45/90)s composited beam for investigating the influence of the objective function, the number of modal data, the noise level, and the optimization algorithms. Numerical results confirm that the frequency-and-mode-shape-changes-based technique yields excellent results in all the three delamination variables of the composites and the addition of mode shape information greatly improves the accuracy of interface layer prediction. Moreover, the EBL outperforms the other three state-of-the-art optimization algorithms for vibration-based delamination detection of composites. A laboratory test on six CFRP beams validates the frequency-and-mode-shape-changesbased technique and confirms again its superiority for delamination detection of composites.
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Yong Zhu,Tao Lu,Xin Chen,Zeng Wu,Yixuan Zheng,Yadong Chen,Weifang Tang 대한약학회 2012 Archives of Pharmacal Research Vol.35 No.10
A series of diaryl ether hydroxamic acids were synthesized for the first time and evaluated for the HDAC biology and antiproliferative activity. The structures of these new hydroxamic acids derivatives were confirmed by IR, 1H-NMR and mass spectrum. Some of these compounds showed micro molar activity in the HDAC inhibitory assay and against four cancer cell lines.
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