PEG-2000液氮保藏混合浸礦菌對黃銅礦生物浸出的影響(英文)
發(fā)布時間:2021-11-29 00:54
首先,富集到具有浸礦能力的混合培養(yǎng)物,然后,以PEG-2000作為保護劑,對混合培養(yǎng)物液氮冷凍保藏6個月和12個月,對其保藏前、后黃銅礦的浸出能力、活性和多樣性進行比較。結(jié)果表明,當用原始培養(yǎng)物浸出黃銅礦時,20天內(nèi)銅的浸出率為95.7%。冷凍保藏6個月后,混合培養(yǎng)物的銅浸出率在25天內(nèi)為94.9%,保藏12個月后,在35天內(nèi)為93.6%。保藏6個月和12個月后,混合菌種的活性分別達到87%和41%。此外,對原始培養(yǎng)物進行生態(tài)學(xué)分析,鑒定得到Acidithiobacillus ferrooxidans, Acidithiobacillus caldus, Sulfobacillus thermotolerans和Pseudomonas aeruginosa。冷凍保藏12個月后,混合培養(yǎng)物的群落組成發(fā)生了變化,但優(yōu)勢菌群依然存在。
【文章來源】:Journal of Central South University. 2020,27(05)EISCICSCD
【文章頁數(shù)】:9 頁
【文章目錄】:
1 Introduction
2 Materials and methods
2.1 Culture medium and microorganisms
2.2 Minerals composition
2.3 Bioleaching experiments
2.4 Cell preservation,recovery and bioleaching
2.5 RFLP analysis from both original and preserved cultures
2.5.1 DNA extraction and purification
2.5.2 PCR amplification and cloning of 16S rDNA sequences
2.6 Statistical analysis
3 Results and discussion
3.1 Liquid nitrogen preservation of mixed culture using PEG-2000 as cryoprotectant
3.2 Bioleaching of chalcopyrite concentrate by original and preserved mixed culture
3.3 Variation of community structure after cryopreservation for 6 months and 12months
4 Conclusions
【參考文獻】:
期刊論文
[1]高絲氨酸內(nèi)酯衍生物的合成表征及在砷脅迫下對氧化亞鐵硫桿菌BY-3生物膜形成的影響(英文)[J]. 高啟禹,唐德平,宋鵬,周劍平,李紅玉. Journal of Central South University. 2020(01)
[2]基于16S-rDNA序列的核桃細菌性疫病病原菌遺傳多態(tài)性分析[J]. 傅本重,陳倩倩,魏蜜,朱潔倩,楊新河,李國元,鄒禮平,汪殿蓓. 河北農(nóng)業(yè)大學(xué)學(xué)報. 2016(05)
[3]一種浸礦混合菌種的篩選、鑒定及浸礦的研究[J]. 聶毅磊,陳宏,羅立津,賈緯,陳星偉. 生物技術(shù)通報. 2016(08)
[4]過程pH刺激對游離和吸附菌協(xié)同浸出黃銅礦的影響(英文)[J]. 彭堂見,石麗娟,余潤蘭,顧幗華,周丹,陳淼,邱冠周,曾偉民. Transactions of Nonferrous Metals Society of China. 2016(08)
[5]2003—2010年山東省食源性沙門菌血清分型及藥敏分析[J]. 陳玉貞,邵坤,關(guān)冰,侯配斌,張華寧,畢振旺. 中國食品衛(wèi)生雜志. 2012(01)
本文編號:3525505
【文章來源】:Journal of Central South University. 2020,27(05)EISCICSCD
【文章頁數(shù)】:9 頁
【文章目錄】:
1 Introduction
2 Materials and methods
2.1 Culture medium and microorganisms
2.2 Minerals composition
2.3 Bioleaching experiments
2.4 Cell preservation,recovery and bioleaching
2.5 RFLP analysis from both original and preserved cultures
2.5.1 DNA extraction and purification
2.5.2 PCR amplification and cloning of 16S rDNA sequences
2.6 Statistical analysis
3 Results and discussion
3.1 Liquid nitrogen preservation of mixed culture using PEG-2000 as cryoprotectant
3.2 Bioleaching of chalcopyrite concentrate by original and preserved mixed culture
3.3 Variation of community structure after cryopreservation for 6 months and 12months
4 Conclusions
【參考文獻】:
期刊論文
[1]高絲氨酸內(nèi)酯衍生物的合成表征及在砷脅迫下對氧化亞鐵硫桿菌BY-3生物膜形成的影響(英文)[J]. 高啟禹,唐德平,宋鵬,周劍平,李紅玉. Journal of Central South University. 2020(01)
[2]基于16S-rDNA序列的核桃細菌性疫病病原菌遺傳多態(tài)性分析[J]. 傅本重,陳倩倩,魏蜜,朱潔倩,楊新河,李國元,鄒禮平,汪殿蓓. 河北農(nóng)業(yè)大學(xué)學(xué)報. 2016(05)
[3]一種浸礦混合菌種的篩選、鑒定及浸礦的研究[J]. 聶毅磊,陳宏,羅立津,賈緯,陳星偉. 生物技術(shù)通報. 2016(08)
[4]過程pH刺激對游離和吸附菌協(xié)同浸出黃銅礦的影響(英文)[J]. 彭堂見,石麗娟,余潤蘭,顧幗華,周丹,陳淼,邱冠周,曾偉民. Transactions of Nonferrous Metals Society of China. 2016(08)
[5]2003—2010年山東省食源性沙門菌血清分型及藥敏分析[J]. 陳玉貞,邵坤,關(guān)冰,侯配斌,張華寧,畢振旺. 中國食品衛(wèi)生雜志. 2012(01)
本文編號:3525505
本文鏈接:http://sikaile.net/projectlw/yjlw/3525505.html
最近更新
教材專著