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Most microorganisms capable of degrading cellulose and xylan synthesize a range of isoenzymes with very similar substrate specificities (1). However, xylan present in cell wall and also in the middle of lamella of plant cells is heterogeneous in structure and not degradable by a single enzyme but by a xylanolytic enzyme complex (4). Among these enzymes, endo-1,4-β-xylanase and β-D-xylosidase have been extensively studied. Others such as those containing acetylxylan esterase, arabinase, R-glucuroni-discovered during recent years (5). Since xylan hydrolysates such as xylose and xylo-oligosaccharides can be good for animal feeds and pharmaceutical, chemical, and health food industries (5), many scientists are attracted to investigate xylanases (6). |
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之前让一硕士生水了7个发明专利，现在这7个获批发明专利的维护费可从哪儿支出哈？
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