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期刊论文 4

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2017 1

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2003 1

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不稳定型心绞痛 1

丙酸睾丸酮 1

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The role of lipids in fermentative propionate production from the co-fermentation of lipid and food waste

《环境科学与工程前沿(英文)》 2023年 第17卷 第7期 doi: 10.1007/s11783-023-1686-0

摘要:

● Lipid can promote PA production on a target from food waste.

关键词: Acidogenic fermentation     Microbial community     Volatile fatty acid     Propionate     Food waste     Lipid    

A syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatment

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

《环境科学与工程前沿(英文)》 2016年 第10卷 第4期 doi: 10.1007/s11783-016-0856-8

摘要: Syntrophic propionate-oxidizing microflora B83 was enriched from anaerobic sludge. The bioaugmentation of microflora B83 were evaluated from wastewater treatment. Methane yield and COD removal were enhanced by bioaugmentation of microflora B83. Hydrogen-producing acetogensis was a rate-limiting step in methane fermentation. Methane fermentation process can be restricted and even destroyed by the accumulation of propionate because it is the most difficult to be anaerobically oxidized among the volatile fatty acids produced by acetogenesis. To enhance anaerobic wastewater treatment process for methane production and COD removal, a syntrophic propionate-oxidizing microflora B83 was obtained from an anaerobic activated sludge by enrichment with propionate. The inoculation of microflora B83, with a 1:9 ratio of bacteria number to that of the activated sludge, could enhance the methane production from glucose by 2.5 times. With the same inoculation dosage of the microflora B83, COD removal in organic wastewater treatment process was improved from 75.6% to 86.6%, while the specific methane production by COD removal was increased by 2.7 times. Hydrogen-producing acetogenesis appeared to be a rate-limiting step in methane fermentation, and the enhancement of hydrogen-producing acetogens in the anaerobic wastewater treatment process had improved not only the hydrogen-producing acetogenesis but also the acidogenesis and methanogenesis.

关键词: Anaerobic wastewater treatment     Methane production     Hydrogen-producing acetogenesis     Methanogenesis     Rate-limiting step     Bioaugmentation    

丙酸睾丸酮治疗不稳定型心绞痛临床研究

马建芳,曾爱萍,谢德辉,邱凤英,张宁,陈宏

《中国工程科学》 2003年 第5卷 第4期   页码 70-72

摘要:

研究了丙酸睾丸酮治疗不稳定型心绞痛的疗效,给48例不稳定型心绞痛患者加用丙酸睾丸酮50 mg肌肉注射,每周2次,12周后观察临床疗效及血液指标变化,并与对照组比较。结果显示治疗组显效32例,有效14例,无效2例,总有效率95.84%,与对照组比较有显著差异(P<0.01)。治疗组治疗后血清总胆固醇(TC)、低密度脂蛋白(LDL)、C-反应蛋白(CRP)明显下降,甘油三酯(TG)轻度下降,高密度脂蛋白胆固醇(HDL-C)轻度升高,对照组无明显变化。认为丙酸睾丸酮具有调脂、减少炎症反应及扩血管作用,能显著改善临床症状及预后。

关键词: 不稳定型心绞痛     丙酸睾丸酮    

Investigation of polyhydroxyalkanoates (PHAs) biosynthesis from mixed culture enriched by valerate-dominant hydrolysate

Jiuxiao Hao, Xiujin Wang, Hui Wang

《环境科学与工程前沿(英文)》 2017年 第11卷 第1期 doi: 10.1007/s11783-017-0896-8

摘要: Valerate-hydrolysate enriched culture showed great ability to produce 3HV and 3H2MV. Valerate-hydrolysate enriched culture had more in the community. Mixed iso-/n-valerate was effective at balancing microbial growth and PHAs synthesis. Co-substrates of valerate and propionate raised the fraction of 3HV and 3H2MV. The production of polyhydroxyalkanoates (PHAs) with a high fraction of 3-hydroxyvalerate (3HV) and 3-hydroxy-2-methylvalerate (3H2MV) from mixed culture enriched by valerate-dominant hydrolysate was evaluated in this study. After long-term enrichment, the culture showed strong ability to synthesize 3HV and 3H2MV, even with acetate-dominant substrate. The ultilization of single or mixed iso-/n-valerate by the enriched culture showed that the mixture of iso-valerate and n-valerate was more efficient substrate than any single in terms of balancing microbial growth and PHAs synthesis. Besides, through comparing the kinetics and stoichiometry of the tests supplying valerate and propionate, the enriched culture with equivalent valerate and propionate (1:1 molar ratio) exhibited superior PHAs production performances to pure valerate or propionate, attaining more than 70 mol% of 3HV and 3H2MV. The above findings reveal that valerate-dominant hydrolysate is a kind of suitable substrate to enrich PHAs producing culture with great capability to synthesize 3HV and 3H2MV monomers, thus improving product properties than pure poly(3-hydroxybutyrate) (P3HB); also 3HV and 3H2MV production behaviors can be regulated by the type of odd-carbon VFAs in the substrate.

关键词: Polyhydroxyalkanoates (PHAs)     Valerate     Mixed culture     3-hydroxyvalerate (3HV)     Propionate    

标题 作者 时间 类型 操作

The role of lipids in fermentative propionate production from the co-fermentation of lipid and food waste

期刊论文

A syntrophic propionate-oxidizing microflora and its bioaugmentation on anaerobic wastewater treatment

Chong Liu, Jianzheng Li, Shuo Wang, Loring Nies

期刊论文

丙酸睾丸酮治疗不稳定型心绞痛临床研究

马建芳,曾爱萍,谢德辉,邱凤英,张宁,陈宏

期刊论文

Investigation of polyhydroxyalkanoates (PHAs) biosynthesis from mixed culture enriched by valerate-dominant hydrolysate

Jiuxiao Hao, Xiujin Wang, Hui Wang

期刊论文