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Comparison of the Nutritional Composition of Bullfrog Meat from Different Parts of the Animal
Yanli Zhu,Min Bao,Chong Chen,Xiaoli Yang,Wenliang Yan,Fazheng Ren,Pengjie Wang,Pengcheng Wen 한국축산식품학회 2021 한국축산식품학회지 Vol.41 No.6
The objective of this study was to evaluate the nutritional content of bullfrog meat from different parts of the animal, including fore-chest, thigh and calf. Bullfrog meat was found to be a rich source of proteins, essential amino acids and minerals, but with a low fat content, compared with other aquatic meat products. There was no significant difference (p>0.05) between thigh and calf in mineral content (K, P, Na, Mg, Ca, Zn, Fe, Cu, and Mn), but the contents of K, P, and Mg were higher in thigh and calf than in the fore-chest (p<0.05). The salt-soluble, water-soluble and insoluble protein bands in sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) electrophoresis, from fore-chest, thigh and calf were similar, with the most abundant bands being 35 kDa (salt-soluble protein), 35-48 kDa (water-soluble protein) and 48 kDa (insoluble protein). The results showed that the insoluble protein content in the fore-chest meat was higher than that in the thigh meat and calf meat, but the salt-soluble protein fraction was the most abundant in thigh meat. These results showed that the nutrients in different parts of bullfrog meat were different.
Wenliang Jiang,Tian Tian,Yan Chen,Xin Wang,Jingfa Zhang 한국지질과학협의회 2020 Geosciences Journal Vol.24 No.5
The Tan-Lu fault zone (TLFZ) is one of the most important active faults in the eastern Chinese mainland, and the seismic activity of the Su-Lu segment is most prominent. The fault structures of the Su-Lu section are very complex and intersect with many other NW-striking and NE-striking fault zones, resulting in the extreme complexity of the crustal structure in this area. In this study, Bouguer gravity and aeromagnetic data are used to invert the crustal structures surrounding the Su-Lu segment and to construct a three-dimensional model. Our results indicate that the TLFZ presents obvious high anomalies in gravity and aeromagnetic fields, cuts through the Moho interface and acts as an upwelling passage for high-density materials from the uppermost mantle and asthenosphere. The gravity and aeromagnetic anomalies are greatly influenced by the crustal structures. Both the Moho and Curie interfaces are characterized by substantial undulations. The NW-striking and NE-striking faults intersect the TLFZ with different relations—for example, the Wuxi-Suqian fault and Cangshan-Nishan fault cut off the TLFZ with distinct gravity and aeromagnetic anomalies, and the Xintai-Mengyin fault and Mengshan piedmont fault cut off the western part of the TLFZ. In addition, most faults cut to the middle crust, and the lower crust is ductilely deformed because of magmatic underplating, reforming, remelting and thinning of the eastern North China block. Most earthquakes occur in the northern part of the Su-Lu segment, where magmatic activity is intense.