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微量元素对双孢蘑菇菌丝生长的影响 总被引:3,自引:0,他引:3
聋用固体平板和液体摇瓶培养试验方法,研究了Zn2+、Cu2+、Co2+、Mo(VI)、Mn2+等5种微量元素对双孢蘑菇2796菌丝生长的影响。通过测定各处理组的菌丝干重、胞内多糖、过氧化物酶活和菌丝生长势等生长参数表明,双孢蘑菇在添加上述5种浓度为20—40mg/L的微量元素时,对菌丝生长势、胞内多糖量和胞外蛋白量等都有促进作用,加入的浓度不同其促进程度也不同。加入Mn2+促进菌丝生长的效果最明显,使菌丝干重达最高值(200mg/100ml),胞内多糖量高达23mg/100ml,分别比对照组增加200%和400%,但添加高浓度的微量元素则会抑制菌丝的生长。 相似文献
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山苍籽油抑制黑曲霉生长的细胞学机制 总被引:2,自引:0,他引:2
采用电镜、多维显微、快速显微图像分析,并与计算机技术相结合,研究天然山苍籽香精油抗黑曲霉的机理,获得了单纯使用光学显微镜或电镜难以获得的结果,表明该香精油能直接通过损伤黑曲霉质膜,改变其膜的物理参数和选择通透性而进入细胞,诱发细胞的一系列因素,从而导致孢子失去萌发力,并抑制菌丝体生长.图2表1参12 相似文献
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以产黄青霉(Penicillium chrysogenum)菌丝体为原料,通过2步化学反应将含有大量氨基的聚乙烯亚胺(PEI)嫁接到菌丝体表面,优化反应条件,得到最佳的氨化菌丝体吸附剂.该氨化吸附剂的等电点为pH 10.2,是一种表面带正电荷的菌丝体吸附剂,能有效吸附水中的阴离子内分泌干扰物五氯酚钠(PCP)、2,4二氯苯氧乙酸(2,4-D)和全氟辛烷磺酸钾(PFOS).3种污染物的吸附等温线符合Langmuir方程,15℃时最大吸附量分别为342.9、234.1、1725.6 mg/g.热力学计算表明,3种污染物的吸附均是自发发生的,2,4-D和PFOS的吸附是吸热反应,而PCP是放热反应. 相似文献
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松针褐斑病的病原菌为Lecunosticta acicola,在病叶上或落叶上的病菌子实体和病组织中的菌丝体是初侵染源,病原菌通过雨水的溅散和风力而传播。通过室内药效测定和野外药剂防治湿地松褐斑病的试验,结果药效依次是多菌灵、抗菌素402、退菌特、抗菌素401、波尔多液。 相似文献
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本文介绍了对味精生产废液中菌丝体的聚沉分离的方法及其影响因素的研究。菌丝体的分离及其开发利用对味精生产废液的综合治理有实践意义。 相似文献
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The growth of Phanerochaete chrysosporium(ATCC 24725) in pellets was influenced by culture time,medium pH,C/N,surfactant concentration,spore number in inoculum,and shaking rate.The removal of Pb^2 from aqueous solution by this kind of mycelial pellets was studied.The results indicated that many factors affected biosorption.These factors included pH,Pb^2 concentration,co-ion,adsorption time, and chemical pretreatments of biomass.Under optimum biosorption conditions(pH4.5,27℃,16h),the highest lead uptake of 108 mg/g,was observed with mycelial pellets of 1.5-1.7 mm in diameter which were treated with 0.1 mol/L NaOH solution before adsorption.Pretreatment of biomass with NaOH further increased its biosorption capacity. 相似文献
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Great promotion to the reproduction of white rot fungus Phanerochaete chrysosporlum by adding natural lixiviums such as from wood, maize core and potato in liquid medium was found in this research. Incubated in the liquid medium contained 10 mg/L glucose as carbon source with natural lixiviums for three days, the production of myeelium pellet reaches more than 80 g/L, which is 5 times more than that of without natural lixiviums. Incubated in the liquid medium contained 5 mg/L glucose as carbon source with natural lixiviums for three days, the production of myeelium pellet can reach 69.5 g/L, while the production in the medium without natural lixiviums is very low. When the liquid medium contained 1-20 g/L glucose as carbon source, the production of myeelium pellet in 3 d can only reach 12.5 g/L to 14.5 g/L. The fungus in the medium with potato lixiviums are easily contaminated by other microorganisms and in the medium with maize core lixiviums are easily bulking, while in the medium with wood lixiviums are neither easily contaminated nor bulking. Medium with wood lixiviums can produce more pellet than other medium, endure contamination and keep better sedimentation capacity. So that, wood lixivium is borer additive to the culture of white rot fungi in liquid medium. Addition of the mixture of wood, maize core and potato lixiviums is of advantage to the productian of mycelium pellet. The difference of the production in the medium with different amount of wood lixiviums showed little in the first 3 d, while it esnanded after 3 d. Wood lixiviums stimulate the growth of P. chrysosporium instead of supply organies which fungi need. 相似文献