Sterilization of mycete attached on the unearthed silk fabrics by an atmospheric pressure plasma jet

The sterilization of the simulated unearthed silk fabrics using an atmospheric pressure plasma jet（APPJ） system employing Ar/O2 or He/O2 plasma to inactivate the mycete attached on the silk fabrics is reported. The effects of the APPJ characteristics（particularly the gas type and discharge power） on the fabric strength, physical-chemical structures,and sterilizing efficiency were investigated. Experimental results showed that the Ar/O2 APPJ plasma can inactivate the mycete completely within 4.0 min under a discharge power of 50.0 W. Such an APPJ treatment had negligible impact on the mechanical strength of the fabric and the surface chemical characteristics. Moreover, the Ar ions, O and OH radicals were shown to play important roles on the sterilization of the mycete attached on the unearthed silk fabrics.

赤霉菌的培養与赤霉素酸的提煉結晶

一、赤霉菌的生物学特征赤霉菌Gibberella fujikuroi又叫做稻惡苗病,日人謂之稻馬鹿苗病,是屬于真菌的子囊菌綱Asco-mycetes,以肉座菌目Hypocreales在所有栽培水稻的国家里都曾经报导过,是一种由土壤帶来的病害。我国裘潘氏曾于1939年在南京金陵学报首次报导过。初时研究者們以共有性世代——子囊体,名之为赤霉菌Gibberella fujikuroi,以其无性世代——分生孢子,謂珠鐮刀菌Fusarium monilifome,乃由于最初研究者观察时未能窺其全豹,各定一名所致。赤霉菌与其他子囊菌相似,营养体为茂盛分枝的菌丝(图1),菌丝具有横隔。