摘要
香蕉茎杆的粗纤维含量较高,一直以来却未得到较好的利用。由于纤维素在环境中难以自然降解,随着香蕉种植面积的增大,其对环境的影响也日益增大。通过微生物对香蕉茎秆进行降解,可以实现香蕉杆的资源化和无害化利用。该研究通过CMC酶活、FPA酶活及粗纤维降解率三个指标综合评定了五种高效纤维素降解菌纯培养及组合培养时对香蕉茎秆的降解能力。结果表明:单独培养时,效果较好的菌种为无花果曲霉和康宁木霉,其CMC酶活、FPA酶活、粗纤维降解率分别为699.8 U/mL、30.48 U/mL、22.39%和332.02 U/mL、59.20 U/mL、20.89%。此外,通过菌群构建,得到一个效果较好的组合(康宁木霉和无花果曲霉组合)。该组合的三种指标测定值分别为:947.41 U/mL、115.27 U/mL和29.08%。
Using indicators such as CMC enzyme activity（CMC）,filter paper enzyme activity（FPA） and crude fiber digestibility,this study evaluated the abilities of five cellulose-decomposing microorganisms in degradation of banana stems by use of pure culture and combinative culture respectively.The study found that Fig Aspergillus and Trichoderma Koningii possessed higher digestive rates of crude fiber in the case of pure culture.Besides,with Fig Aspergillus and Trichoderma Koningii,a composite microbial system was constructed,which showed better enzyme activities and fiber digestive rate.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第3期46-49,共4页
Environmental Science & Technology
基金
中央级公益性科研院所基本科研业务费专项"热区几种农业固体废弃物肥料化/基质化利用技术研究"(2009hzs1j021)
关键词
香蕉茎秆
粗纤维
CMC酶活
FPA酶活
banana stem
crude fiber
CMC enzyme activity
FPA enzyme activity
