Yuan Wang,Jun Qi,Kexin Li,Qingyong Zhang,Saisai Wang,Guanhua Cai,Huiqi Yan,Shengmei Gai,Dengyong Liu
The aged braised broth (ABB) is crucial in determining the superior quality of braised chicken by enriching meat-derived flavor compounds. However, its effects on antioxidant activity and sensory attributes remain poorly understood. This study examined the impact of ABB on both antioxidant activity and sensory qualities of braised chicken. The chicken meat sample, compared to chicken broth, ABB increased total phenolic and flavonoid contents by 72.79 % and 206.04 %, respectively. Additionally, ABB boosted antioxidant activity and significantly reduced lipid oxidation (from 0.95 to 0.13 mg MDA/kg). ABB also improved moisture distribution, reduced cooking and centrifugal losses, and had minimal effects on color and texture. The flavor profile was analyzed using an electronic nose, GC-IMS, and GC–MS, confirming that ABB enhanced flavor characteristics. Chemometric analysis identified eugenol, estragole, anethole, 1-octen-3-ol, and hexanal as key aroma compounds. These findings highlight the effectiveness of ABB in improving the eating quality of braised chicken.
Membrane capacitive Li-extraction technology (MCLiE) emerges as a highly promising technology for extracting lithium from saline brines, catering to the surging demand for lithium resources. In this study, a positively charged polymeric membrane consisting of dopamine-polyethyleneimine is adhered to the surface of LiMn 1.9 Cr 0.1 O 4 @carbon cloth (LMC@CC/DA-PEI) via surface engineering strategy, which is then employed as a flexible electrode for Li-extraction assembled in the membrane capacitive deionization (MCDI) system. Experimental results confirm that the old brine from West Taijinar with high Li content and low Mg/Li ratio is proper for practical Li-extraction, and the initial discharge/absorption capacities of LMC@CC/DA-PEI-0.5 electrode are 105.9 mAh·g −1 /27.4 mg·g −1 . Following 200 cycles, capacity retentions of bare LMC@CC and LMC@CC/DA-PEI-0.5 are 43.40 % (13.5 mg·g −1 ) and 59.77 % (16.4 mg·g −1 ), respectively. Therefore, surface incorporation of DA-PEI mitigates structural degradation of LMC and stabilizes long-cycle (de)lithiation of Mn-based electrodes. Moreover, the high Li + selectivity (α Li/Mg = 156.7) is due to the spinel lattice of the LMC in combination with the electrostatic repulsion of the positively charged DA-PEI layer. Considering the strict environmental protection requirements and abundant new energy power supply in salt-lake areas, the assembled MCDI system with the DA-PEI-assisted LMC@CC electrode holds great potential for yielding enhanced Li + selectivity in the lithium recovery from old brine.
危险品化学品经营许可证（带存储）