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首页> 外文期刊>Modelling, Measurement & Control. Series C, Energetics, chemistry & chemical engineering, earth resources, environment, biomedical problems >Studies on The Seasonal Variations-of The Deteriorative Fungal Colonization at Air-Conditioners, Wallpapers and Old Painted Walls and Their Enzymes Activities
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Studies on The Seasonal Variations-of The Deteriorative Fungal Colonization at Air-Conditioners, Wallpapers and Old Painted Walls and Their Enzymes Activities

机译：空调器，墙纸和旧粉刷墙变质性真菌的季节性变化及其酶活性的研究

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摘要

During the four seasons of the year, the fungal colonization of air-conditioners, wallpapers and old painted walls were isolated from various sites in Cairo, Egypt and were identified. The total fungal counts and the frequency occurrence % of these fungal isolates and their exoenzymatic activities at the different locations were studied. The statistical analysis of the deteriorative fungal colonization at different sites showed a significant variations. Elaboration of cellulases and proteases were detected in these fungal isolates that affected various cellulosic materials badly. The humidity and temperature conditions of each season affect the fungal counts and also the level of both cellulase and protease activities. The fungal isolates of air conditioners produce high amount of cellulases and proteases during autumn followed by summer, spring and winter while in wallpapers high amounts of both enzymes were noticed in autumn and spring. The fungal isolates of old painted walls in damp houses produce high amount of cellulolytic and proteolytic enzymes in summer and autumn. A.flavus and A.niger are the most frequent isolates detected in all locations all over the year with high enzymatic activities and high frequency occurrence%. Maintenance of buildings, cleaning and overhaul of air-conditioners and all valuable objects as frescoes, paintings, books, museums,..etc should be carried out periodically. It is a basic prerequisite for safety and prevention of deleterious health effects of the microorganisms.
机译：在一年的四个季节中，从埃及开罗的不同地点隔离了空调，墙纸和粉刷过的墙壁的真菌定植并进行了鉴定。研究了这些真菌分离物的总真菌数量和发生频率％，以及它们在不同位置的外酶活性。对不同部位的真菌定殖恶化的统计分析显示出显着差异。在这些严重影响各种纤维素材料的真菌分离物中检测到了纤维素酶和蛋白酶的加工。每个季节的湿度和温度条件都会影响真菌数量以及纤维素酶和蛋白酶活性的水平。在秋季，其次是夏季，春季和冬季，空调的真菌分离物会产生大量的纤维素酶和蛋白酶，而在墙纸中，秋季和春季会发现大量的两种酶。在潮湿的房屋中，旧粉刷墙壁的真菌分离物在夏季和秋季产生大量的纤维素分解酶和蛋白水解酶。黄曲霉和黑曲霉是全年在所有地点检测到的最频繁的分离株，具有较高的酶活性和较高的发生频率％。建筑物的维护，空调的清洁和大修以及壁画，绘画，书籍，博物馆等所有贵重物品应定期进行。这是安全和预防微生物有害健康影响的基本前提。

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