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Degradation Of Organic Pollutants Using A Photo-Enzymatic Cascade Process, Yu Xiao-Min, Pan Dai-Qing, Long Qing-Yun, Chen Xiao-Yang
Degradation Of Organic Pollutants Using A Photo-Enzymatic Cascade Process, Yu Xiao-Min, Pan Dai-Qing, Long Qing-Yun, Chen Xiao-Yang
Food and Machinery
Objective:A strategy of degrading organic pollutants using a photo-enzymatic cascade process was established, to avoid the problem caused by the use of H2O2 as oxidant in peroxidase-catalyzed reaction.Methods:After screening of photosensitizer, reaction pH and temperature, phenols and azo dyes can be degraded efficiently herein, by a combination of photo-catalytic H2O2 generation in situ and peroxidase-catalyzed oxidation.Results: 8 organic pollutions in different structure can be degraded with good to excellent degradation rate within 40 minutes. Moreover, the mechanism of this degradation process was proposed.Conclusion: Compared with classic methods of degrading organic pollutants, this photo-enzymatic cascade process …
Screening And Identification Of Biogenic Amine Degrading Strains, Du Xue, You Yan-Feng
Screening And Identification Of Biogenic Amine Degrading Strains, Du Xue, You Yan-Feng
Food and Machinery
Strains with biodegradability of biogenic amines were screened from lactic acid bacteria strains from different sources preserved in the laboratory, and their growth ability at different salt concentrations and pH values were determined. The results showed that three strains with the capability of degrading biogenic amines were screened out. Based on 16S rDNA sequence analysis, strain HM22 was identified as Lactobacillus fermentum, strain HM24 as Lactobacillus plantarum, and strain YF10042 as Enterococcus faecalis. Among them, Lactobacillus plantarum HM24 has the best degradation ability. The degradation rates of tryptamine, phenethylamine, putrescine, cadaverine, histamine, tyramine, spermidine and spermine are …
Research Progress On Degradation Technology Of Harmful Gases In Granary, Pan Di, Ma Ting-Jun, Kang Kai, Bai Shu-Pei
Research Progress On Degradation Technology Of Harmful Gases In Granary, Pan Di, Ma Ting-Jun, Kang Kai, Bai Shu-Pei
Food and Machinery
There were many harmful gases in the process of storing grain in large granaries, which can not only cause environmental pollutions, but also endanger people's health. Reducing harmful gases in granaries and ensuring grain quality had become the focus of food storage industry. In this paper, the sources, types and harms of harmful gases produced in the process of grain storage were briefly described, and the relative degradation methods, principles, advantages and disadvantages of phosphine, were also introduced in detail. Furthermore, the feasibility of degradation of harmful gases in granary by plasma technology was emphasized, and the problems to be …