排序方式: 共有3条查询结果,搜索用时 0 毫秒
1
1.
BIODEGRADATION OF REGENERATED CELLULOSE FILMS BY FUNGI 总被引:1,自引:0,他引:1
The biodegradability of Aspergillus niger (A. niger), Mucor (M-305) and Trichoderma(T-311) strains on regenerated cellulose films in media was investigated. The results showedthat T-311 strain isolated from soil adhered on the cellulose film fragments has strongerdegradation effect on the cellulose film than A. niger strain. The weights, molecular weightsand tensile strengths of the cellulose films in both shake culture and solid media decreasedwith incubation time, accompanied by producing CO_2 and saccharides. HPLC, IR and re-leased CO_2 analysis indicated that the biodegradation products of the regenerated cellulosefilms mainly contain oligosaccharides, cellobiose, glucose, arabinose, erythrose, glycerose,glycerol, ethanal, formaldehyde and organic acid, the end products were CO_2 and water.After a month, the films were completely decomposed by fungi in the media at 30℃. 相似文献
2.
模拟污水中氮、磷对水稻幼苗过氧化氢酶和乙醇酸氧化酶的影响 总被引:2,自引:0,他引:2
以水稻为材料,研究了不同浓度的模拟污水中N、P对幼苗过氧化氢酶(Catalase,CAT,EC1.11.1.6)、乙醇酸氧化酶(Glecolateoxidase,GO,EC1.3.3.1)、过氧化物酶(Peroxidase,POD,EC1.11.1.7)和叶绿素含量的影响.结果表明:低浓度N、P(分别;在0~4.28mmol·L-1、0~0.2mmol·L-1范围)可诱导CAT活性增大,而后下降,N、P浓度分别超过8.56mmol·L-1和0.4mmol·L-1后,活性又升高;POD的活性变化与CAT变化很相似.N、P浓度分别在0~6.42mmol·L-1、0~0.3mmol·L-1范围,GO活性随N、P浓度增高而活性下降,超过6.42mmol·L-1、0.3mmol·L-1后,则随N、P浓度增大而增大.这可能是高浓度N、P可提高水稻的光呼吸的结果.另外,污水中N、P抑制叶绿素的合成,使叶绿素的含量降低;低浓度污水N、P促进根生长,高浓度N、P抑制根生长 相似文献
3.
采用好氧真菌降解和受控堆肥化试验分别测试了 3种改性塑制餐盒的生物降解性及可堆肥性 .试验结果显示 ,聚苯乙烯 -淀粉共混餐盒的生物降解性与其淀粉添加量密切相关 ,并且餐盒中淀粉的生物降解率随其添加量的减少而降低 .热塑性淀粉餐盒易于生物降解 ,其生物降解率可达 6 7.0 % .这种餐盒具有良好的可堆肥性 ,经堆肥化处理后能被完全消纳 . 相似文献
1