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Faezeh Ghanati Parviz Abdolmaleki Majid Vaezzadeh Elham Rajabbeigi Mohammad Yazdani 《The Environmentalist》2007,27(4):429-434
In the present research, the effects of static magnetic field, with or without iron on the growth, the activity of certain
enzymes (like polyphenol oxidase and phenyle alanine ammonialyase), the content of phenolic compounds and the essential oil
composition of sweet basil (Ocimum basilicum) were studied. Treatment of plants with static magnetic field with or without iron led to decrease of the growth of plants
as well as decrease in the activity of phenyle alanine ammonialyase and of phenolic compounds content. In addition in those
plants exposed to magnetic field the amount of essential oils, notably of methyl chavicol, was increased. Exposure of plants
to the magnetic field decreased the activity of polyphenol oxidase, whereas treatment of plants with iron when exposed to
magnetic field increased polyphenol oxidase activity. In this group the content of essential oil was reduced. 相似文献
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以填埋场垃圾为研究对象,在土壤酶测定方法为基础上,对垃圾降解过程中多酚氧化酶活性测定方法进行优化.通过单因素实验和正交实验确定最优反应条件,并验证其精确度及稳定性.最终确定垃圾降解过程中多酚氧化酶活性测定的最优条件为基质取用10 mL、反应温度为30℃、缓冲液为8mL、反应时间为1.5h、萃取剂量为20 mL、萃取时间为50 min,且优化后测定条件实验结果的RSD小于2.22%,测定结果较传统方法提高了41% ~ 90%,说明优化后结果准确可靠,为垃圾中多酚氧化酶的活性测定提供了新的方法基础. 相似文献
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Michael K. Theodorou Alison H. Kingston-Smith Ana L. Winters Michael R. F. Lee Frank R. Minchin Phillip Morris John MacRae 《Environmental Chemistry Letters》2006,4(3):121-126
Polyphenols in plants can protect proteins from degradation and improve the efficiency of conversion of plant protein to animal protein (meat and milk), but can this be achieved in a way that is environmentally sustainable, profitable to the livestock farmer and is consistent with aspirations for improved livestock nutrition, health, welfare and product quality? Given that grazed and conserved forage is the bedrock of sustainable ruminant production, this paper attempts to consider what challenges are ahead in terms of enhancing productive efficiency, reducing the polluting footprint of livestock agriculture and alleviating the endemic parasitism that occurs with grazing animals. 相似文献
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Toxicity attenuation of olive mill wastewater in soil slurries 总被引:1,自引:0,他引:1
Maria Letizia Colarieti Giuseppe Toscano Guido Greco Jr 《Environmental Chemistry Letters》2006,4(2):115-118
Olive mill wastewaters are toxic for plants and microbes due to their high polyphenol content. We studied the effect of agricultural soil as a natural catalyst to promote polyphenol oxidation and polymerization, and in turn detoxify olive mill wastewaters. We show that model polyphenols are fully converted in soil slurries. Their products show no toxicity to the growth of a typical soil bacterium, Bacillus cereus, and reduced phytotoxicity in germination tests with English cress seeds. Those findings are promising for the sustainable treatment of olive wastewater in aerated soil slurries. 相似文献
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Jianmei Zou Jianzhi Huang Huichun Zhang Dongbei Yue 《Frontiers of Environmental Science & Engineering》2021,15(1):5
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植物多酚改性膨润土吸附重金属镉实验研究 总被引:1,自引:0,他引:1
对钙基膨润土、酸活化膨润土、自制单宁酸改性膨润土,通过表征测试研究了膨润土改性后的形态结构变化。结果表明:单宁酸改性膨润土较钙基膨润土结构未发生较大变化;并分别探讨了不同投加量、反应pH及不同初始浓度对单宁酸改性膨润土吸附镉的影响。实验表明:单宁酸改性膨润土对Cd2+的吸附性能优于钙基膨润土及酸活化膨润土,在材料用量越小及反应pH越低时,单宁酸对膨润土吸附Cd2+的促进作用越明显。单宁酸改性膨润土对Cd2+的吸附能用Langmuir吸附方程进行描述,其最大吸附量约为31.25mg/g,比钙基膨润土提高了20.6%。本研究将为非金属矿物在水体及土壤重金属污染修复方面的应用提供理论基础和科学依据。 相似文献
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