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排序方式: 共有132条查询结果,搜索用时 15 毫秒
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Ong LG Abd-Aziz S Noraini S Karim MI Hassan MA 《Applied biochemistry and biotechnology》2004,118(1-3):73-79
The oil palm sector is one of the major plantation industries in Malaysia. Palm kernel cake is a byproduct of extracted palm
kernel oil. Mostly palm kernel cake is wasted or is mixed with other nutrients and used as animal feed, especially for ruminant
animals. Recently, palm kernel cake has been identified as an important ingredient for the formulation of animal feed, and
it is also exported especially to Europe, South Korea, and Japan. It can barely be consumed by nonruminant (monogastric) animals
owing to the high percentages of hemicellulose and cellulose contents. Palm kernel cake must undergo suitable pretreatment
in order to decrease the percentage of hemicellulose and cellulose. One of the methods employed in this study is fermentation
with microorganisms, particularly fungi, to partially degrade the hemicellulose and cellulose content. This work focused on
the production of enzymes by Aspergillus niger and profiling using palm kernel cake as carbon source. 相似文献
3.
Development of a bionematicide with Paecilomyces lilacinus to control Meloidogyne incognita 总被引:1,自引:0,他引:1
Brand D Roussos S Pandey A Zilioli PC Pohl J Soccol CR 《Applied biochemistry and biotechnology》2004,118(1-3):81-88
Root-knot disease caused by Meloidogyne incognita is a matter of grave concern because it affects several economically important crop plants. The use of solid-state fermentation
(SSF) may help to elaborate efficient formulations with fungi to be employed in the biologic control of nematodes. Attempts
were made to select low-cost substrates for spore production of a strain of Paecilomyces lilacinus with known nematicide capacity. Coffee husks, cassava bagasse, and defatted soybean cake were utilized as substrates, and
sugarcane bagasse was used as support. Fermentations were carried out in flasks covered with filter paper at 28°C for 10 d.
The products obtained by SSF were evaluated for their nematicide activity in pot experiments containing one seedling of the
plant Coleus inoculated with the nematode M. incognita. The plants were evaluated 2 mo after inoculation. Fermented products showed a reduction in the number of nematodes. The
best results were obtained with defatted soybean cake, which showed almost 100% reduction in the number of nematodes; the
reduction with coffee husk was 80% and with cassava bagasse was about 60%. 相似文献
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Sabu A Sarita S Pandey A Bogar B Szakacs G Soccol CR 《Applied biochemistry and biotechnology》2002,102(1-6):251-260
Solid-state fermentation of coconut oil cake has been carried out with Rhizopus oligosporus for the production of phytase. Phytase is used commercially in the animal feed industry to improve animal performance because
there is a substantial and growing interest among swine and poultry producers in the application of phytase to improve the
nutritional quality in animal feeds. Demonstrated benefits include improved feed yield ratios and reduction in the environmental
costs associated with the disposal of animal wastes. We report the production of extracellular phytase by R. oligosporus under solid-state fermentation using coconut oil cake as substrate. Maximal enzyme production (14.29 U/g of dry substrate)
occurred at pH 5.3, 30°C, and 54.5% moisture content after 96 h of incubation. The addition of extra nutrients to the substrate
resulted in inhibition of product formation. The results indicate the scope for production of phytase using coconut oil cake
as solid substrate without additional nutrients. 相似文献
7.
马铃薯的预糊化试验结果表明,在各种加热方法中,马铃薯经蒸煮25 min后的糊化效果最好.正交试验结果表明,奶粉含量和黄油含量对冷冻调理马铃薯饼的感官指标有显著的影响.对冷冻调理马铃薯饼的油脂的测试结果显示,未经油炸的马铃薯饼的脂肪含量为4.24%,而经过油炸后的马铃薯饼的脂肪含量为11.18%.经过一个月的冻藏后,未经油炸的冷冻调理马铃薯饼的油脂的过氧化值为1.94%,而经过油炸的冷冻调理马铃薯饼的油脂的过氧化值为7.79%. 相似文献
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介绍了用MATLAB的Curve Fitting Toolbox计算解淀粉芽孢杆菌Q-426发酵液恒压过滤比阻的方法。通过在图形界面下导入恒压过滤实验数据及平滑处理、采用平滑样条拟合数据以及数值微分等操作,确定了解淀粉芽孢杆菌Q-426发酵液恒压过滤的滤饼比阻。研究表明,该方法运行可靠,无需编程,易于掌握。与传统计算方法相比,操作更为便捷,强有力的图形界面也使计算变得更加简单而直观。 相似文献
10.
正渗透膜生物反应器(OMBR)作为一种新兴的技术,有很好的应用前景,但是关于其膜污染的研究尚且不多。该文章研究了在OMBR运行过程中膜表面所形成滤饼层的性质。结果显示,在OMBR运行初期,大粒径颗粒先沉积在膜表面,随着运行,生物反应器内的颗粒变小,小的颗粒沉积在膜表面。滤饼层韧性比较强,很容易将其从膜表面冲刷下来。扫描电镜显示滤饼层与正渗透膜接触一侧很光滑,冲洗后的膜只有少量污染物残留。这是由于正渗透膜表面粗糙度小,孔隙小,污染物很难进入膜孔中,滤饼层与膜之间连接不紧密。滤饼层中51%重量组分的物质是有机物,其余是无机污染物。通过红外测定,主要的有机污染物是多糖和蛋白质,是生物聚合物的主要成分。通过能量散射X射线分析仪(EDX)显示主要无机元素是Si, Ca, Mg, Al和Fe。综上,正渗透膜生物反应器产生的膜污染易清洗,要减少其膜污染需要控制生物聚合物和无机污染物的量。 相似文献