京畿地区香菇中甲醛含量检测及分析

Determining and analyzing on the formaldehyde content in the Lentinula edodes from region of the capital city and its environs

中文关键词:  香菇  甲醛  京畿地区

英文关键词:lentinula edodes  formaldehyde  the capital city and its environs

中文摘要:

      目的 通过分析京畿地区产地香菇和市场香菇中的甲醛含量, 揭示不同种类、干湿形态、生长阶段、培育方式的香菇中甲醛含量变化, 为香菇中的甲醛本底含量研究提供数据支持。方法 利用乙酰丙酮分光光度法测定香菇甲醛含量。结果 (1)鲜香菇中甲醛含量差异较大, 部分高达200倍左右; (2)鲜香菇中中菇含量最高, 总体呈中菇>大菇>小菇趋势; (3)不同生长阶段的香菇中3潮或4潮的甲醛含量较高, 与香菇发育完全、代谢旺盛有关; (4)地栽方式培育的香菇其甲醛含量一般是架栽的2倍左右; (5)参照出口香菇中甲醛限量标准, 部分鲜香菇中的甲醛含量会对出口造成一定影响。结论 栽培工艺、菌种类型对香菇中内生甲醛含量有着决定性影响, 应加强对比，进行交叉试验, 优化培育方式, 遴选香菇菌种, 降低香菇内生甲醛的含量。

英文摘要:

      Objective To lay the foundation of basement content of the formaldehyde in the Lentinula edodes by studying their kinds, dried and fresh status, different growth phases and methods of cultivation，which were collected from the production bases and the markets around the capital city and its environs. Methods The acetylacetone spectrophotometry was used to detect the formaldehyde content in Lentinula edodes. Results It showed that the content of formaldehyde could be 200 times different in the fresh Lentinula edodes; the effects order of the content of formaldehyde in the fresh Lentinula edodes was middle mush-room> big mushroom>small mushroom; the content of formaldehyde in the fresh Lentinula edodes at 3-phase or 4-phase were the most greatest compared to that of other growth-phase, which could be relevant to the degree of maturity and metabolism; the content of formaldehyde whcihcultivating in the field was 2 times more than that on the frames; according to the limit standard for export, the content in Lentinula edodes from the capital region could had some effect to exportation. Conclusion The methods of cultivation and the kinds of Lentinula edodes play a decisive role in its content of formaldehyde. Some actions should be done to enhance the comparative trial, to optimize the cultivating methods and select mushroom strains to reduce the content of formaldehyde in Lentinula edodes.