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北美的一些工厂(包括有或无氧脱木素段及采用多段漂的工厂)已经成功将丝状真菌瑞氏木霉产生的聚木糖酶用于浆料处理。北美工厂反映,在浆料漂白过程中增加酶处理,可提高浆料白度,降低漂白成本。南美工厂进行的实验室研究结果表明,采用真菌及细菌类聚木糖酶处理桉木浆可大幅降低漂白成本。南美某工厂利用商品真菌类聚木糖酶进行试验,从技术方面来说,此次试验是成功的;而南美至少4家工厂尝试用细菌类聚木糖酶进行浆料漂白试验,试验结果表明,酶处理明显增加了漂白成本。本研究旨在寻找南美工厂采用细菌类聚木糖酶进行浆料处理漂白效果不好,而北美工厂和南美另外一家工厂用真菌类聚木糖酶处理漂白效果好的原因。
Some North American plants, including or without oxygen delignification and multistage plants, have successfully used the xylanase produced by the filamentous fungus, T. reesei, for slurry treatment. The North American plant reports that increasing enzyme treatment during pulp bleaching increases the whiteness of the pulp and reduces bleaching costs. Laboratory studies conducted at South American facilities show that the use of fungi and bacterial xylanases for eucalyptus pulp can significantly reduce bleaching costs. South America, a factory using commercial fungal Xylanase test, from a technical point of view, the test was successful; and at least 4 factories in South America try bacteria pulp Xylanase bleaching test results show that , Enzyme treatment significantly increased bleaching costs. The aim of this study was to find out the poor bleaching effect of bacterial xylanases in South American factories while the bleaching effect of fungal xylanases in North American and South American factories was good.