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Evaluation of the biogenic amines in low-salt shrimp paste cooked under various conditions
BaoZhu Shi,김시우,문보경 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.8
Shrimp paste, a type of traditional Chinese food prepared from shrimp fermented with salt, contains biogenic amines (BAs). In this study, the BA content, salinity, and pH of eight commercial low-salt shrimp pastes were analyzed. In addition, the influences of various cooking conditions on the BA content of it were evaluated by HPLC. The total BA amount per product ranged between 32.39 and 1051.16 mg/kg. The salinity and pH were found significantly inversely correlated with the total BA amount. Of the cooking methods tested, after microwave heating and stir-frying, the total BA amount of shrimp paste, which showed the highest BA amount among 8 samples, declined from 1051.16 to 598.48 and 650.49 mg/kg, respectively; however, boiling or steaming showed no significant effects on the total BA amount. These results indicated possible health risk of low-salt shrimp paste whereas the risk could be reduced by choosing appropriate cooking method.
Xiaofa Su,Yan Qi,Baozhu Shi,Yanqun Lv,Lecheng Tian 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2018 NANO Vol.13 No.08
The CuInS2 quantum dots sensitization of TiO2 nanonails (NNs) array was successfully carried out by a successive ionic layer absorption and reaction (SILAR) method using CuCl2 · 2H2O, InCl3 · 4H2O and Na2S · 9H2O as precursors. The morphology, elemental composition and crystalline structure of the CuInS2 quantum dots sensitized TiO2 NNs array heterojunction nanostructures were characterized by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), energy dispersive X-ray analysis (EDX), X-ray diffraction (XRD) and X-ray-photoelectron spectroscopy (XPS). The above characterization results could unanimously reveal that the nanoparticles successfully loaded on the TiO2 NNs array can be assigned as CuInS2 quantum dots. UV-Vis absorption measurements indicated that the CuInS2 quantum dots sensitization extended the visible light absorption. The largest short-circuit photocurrent density of 17.7 mA/cm2 was obtained, which indicated that the CuInS2 was a promising material in activating visible light functionalities and enhancing photoelectrochemical performance.