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以‘808’香菇为试材,研究了1-MCP处理、肉桂精油结合1-MCP处理对香菇采后褐变和感官品质的影响。结果表明:随着贮藏时间的延长,对照组(未处理)香菇感官品质下降,表面L*值降低、褐变严重,开伞度增加;从不同浓度1-MCP处理的保鲜效果来看,与对照(未处理)、0.5 mg·L-1和10.0 mg·L-1 1-MCP相比,2.0 mg·L-1 1-MCP处理保鲜效果最好,菇体开伞少,质地硬度大、色泽好;从肉桂精油结合1-MCP处理来看,以5μL·L-1肉桂精油结合2.0 mg·L-1的1-MCP处理效果最好,延迟了香菇褐变和开伞的发生,维持了香菇表面较高的L*值高,感官得分最高。 相似文献
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Zhou O Fleming RM Murphy DW Chen CH Haddon RC Ramirez AP Glarum SH 《Science (New York, N.Y.)》1994,263(5154):1744-1747
Previous high-resolution electron microscopy (HREM) observations of the carbon nanotubes have led to a "Russian doll" structural model that is based on hollow concentric cylinders capped at both ends. The structures of the carbon nanotubes and particles were characterized here by bulk physical and chemical property measurements. The individual nanostructure is as compressible as graphite in the c axis, and such nanostructures can be intercalated with potassium and rubidium, leading to a saturation composition of "MC(8)." These results are counter to expectations that are based on a Russian doll structure. HREM after intercalation with potassium and deintercalation indicates that individual nanoparticles are a "paper-mache" of smaller graphite layers. Direct current magnetization and electron spin resonance measurements indicate that the electronic properties of the nanostructures are distinctly different from those of graphite. Although the nanostructures have distinct morphologies and electronic properties, they are highly defective and have a local structure similar to turbostratic graphite. 相似文献