顶空固相微萃取-气质联用法测定松口蘑发酵醪中挥发性化合物

Determination of volatile compounds from the cultured broth of Tricholoma matsatake Sing by HS-SPME with GC-MS

利用固相微萃取与气相一质谱联用的方法分析松1：2蘑发酵醪挥发性香味物质的组成。结果表明，松1：2蘑发酵醪含有松1：2蘑深层发酵醪中含有36种C2一C18化合物，包括醇11种、醛2种、酮3种、烯2种、酸5种、酯8种、烷2种及杂环类3种，其中，含量较多化合物为Dibutanoylmorphine（15．91％）、n一十六酸（14．28％）和十六酸甲酯（11．10％），并含有3一辛醇、1一辛烯一3一酮等蘑菇特征呈香物质味。

Etched-Al foils were, before or after hydration in boiling water, covered with ZrO2 film by DC-electrodeposition in Zr（ NO3 ）4 solution and following heat treatment at 500 ℃ , and then anodized in H3 BO4 solution to prepare Al2O3-ZrO2composite anodic oxide film. The time-variation in anode potential during anodization was recorded on a digital multimeter connected to a PC system. The surface morphology, composition and electrochemical properties of the film were examined by means of SEM, EDS and EIS/LCR digital bridge, respectively. The results show that comparing with only hydrated foil, the foil with ZrO2 prior to hydration can be anodized with higher efficiency by 20% and the formed film is rich in Zr, leading to a higher specific capacitance and a lower specific resistance. Whereas, the formation efficiency for the foil, deposited with ZrO2 posterior to hydration, is lower and the resulted film is poor in Zr, leading to a lower specific capacitance and a higher specific resistance.