敦煌壁画色变中微生物因素的研究──Ⅲ.枝孢霉在石窟壁画铅丹变色中的作用  

STUDIES ON MICROBIAL FACTOR ON COLOR CHANGE OF DUNHUANG MURAL──Ⅲ. EFFECT OF CLADOSPORIUM SP.ON COLOR-CHANGE OF RED LEAD IN THE SURFACE OF MURAL

作　　者：冯清平[1] 张晓君[1] 马晓军[1] 杨玲[1] 

机构地区：[1]兰州大学生物系,兰州730000

出　　处：《微生物学报》1998年第5期365-370,共6页Acta Microbiologica Sinica

基　　金：国家自然科学基金

摘　　要：从敦煌莫高窟分离的枝孢霉在模拟壁画表面萌发的条件为：20℃，RH60％或30℃，RH50％。部分石窟在特定时间内可满足这一条件。骨胶对铅丹起到保护作用，而枝孢霉可以分解骨胶，并利用其生长和形成草酸等代谢产物。这些作用使铅丹处于一个特殊的化学环境，造成稳定性下降，并促进了铅丹向铅白的转变。The conditions isolated Cladosporium sp. from Mural of Dunhuang grottos germinated on the surface of imitated mural were as follows:20℃ an 60% or 30℃ RH 50%, which could be reached occasionally in some grottoes. Bone glue had protective function on red lead, while Cladosporium sp. could decompose bone glue and form some metabolite (such as oxalic acid, etc) as it grows. Then it could form a special chemical circumstance, which promoted the change from red lead to while lead.

关 键 词：枝孢霉 铅丹 铅白 骨胶 

分 类 号：Q939.9[生物学—微生物学] Q913[天文地球—古生物学与地层学]