CN116836820B - 一株耐铀产酸黄曲霉菌及其应用 - Google Patents
一株耐铀产酸黄曲霉菌及其应用 Download PDFInfo
- Publication number
- CN116836820B CN116836820B CN202311045031.4A CN202311045031A CN116836820B CN 116836820 B CN116836820 B CN 116836820B CN 202311045031 A CN202311045031 A CN 202311045031A CN 116836820 B CN116836820 B CN 116836820B
- Authority
- CN
- China
- Prior art keywords
- aspergillus flavus
- uranium
- culture medium
- soil
- fermentation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 241000228197 Aspergillus flavus Species 0.000 title claims abstract description 57
- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 35
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000002253 acid Substances 0.000 title claims abstract description 11
- 239000002689 soil Substances 0.000 claims abstract description 31
- 238000000855 fermentation Methods 0.000 claims abstract description 20
- 230000004151 fermentation Effects 0.000 claims abstract description 20
- 238000002386 leaching Methods 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 238000009629 microbiological culture Methods 0.000 claims abstract description 3
- 239000001963 growth medium Substances 0.000 claims description 26
- 235000002595 Solanum tuberosum Nutrition 0.000 claims description 10
- 244000061456 Solanum tuberosum Species 0.000 claims description 10
- 229920001817 Agar Polymers 0.000 claims description 9
- 239000008272 agar Substances 0.000 claims description 9
- 229930006000 Sucrose Natural products 0.000 claims description 8
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000005720 sucrose Substances 0.000 claims description 8
- 238000009630 liquid culture Methods 0.000 claims description 5
- 230000001954 sterilising effect Effects 0.000 claims description 5
- 238000012258 culturing Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 241000228212 Aspergillus Species 0.000 claims description 2
- 239000010413 mother solution Substances 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 238000005065 mining Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 7
- 230000000813 microbial effect Effects 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 238000011161 development Methods 0.000 abstract description 4
- 206010059866 Drug resistance Diseases 0.000 abstract description 2
- 244000052616 bacterial pathogen Species 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000002906 microbiologic effect Effects 0.000 abstract description 2
- 239000000447 pesticide residue Substances 0.000 abstract description 2
- 239000002609 medium Substances 0.000 description 11
- 230000005764 inhibitory process Effects 0.000 description 6
- 239000012452 mother liquor Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 150000007524 organic acids Chemical class 0.000 description 5
- 241000233866 Fungi Species 0.000 description 4
- 230000001580 bacterial effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 108090000623 proteins and genes Proteins 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000000877 morphologic effect Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- 108020004414 DNA Proteins 0.000 description 1
- 108091023242 Internal transcribed spacer Proteins 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000012408 PCR amplification Methods 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002053 acidogenic effect Effects 0.000 description 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000001630 malic acid Substances 0.000 description 1
- 235000011090 malic acid Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
- C12N1/145—Fungal isolates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/10—Reclamation of contaminated soil microbiologically, biologically or by using enzymes
- B09C1/105—Reclamation of contaminated soil microbiologically, biologically or by using enzymes using fungi or plants
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/14—Fungi; Culture media therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12R—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES C12C - C12Q, RELATING TO MICROORGANISMS
- C12R2001/00—Microorganisms ; Processes using microorganisms
- C12R2001/645—Fungi ; Processes using fungi
- C12R2001/66—Aspergillus
- C12R2001/67—Aspergillus flavus
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Genetics & Genomics (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Mycology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biomedical Technology (AREA)
- Botany (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Tropical Medicine & Parasitology (AREA)
- Virology (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明公开了一株耐铀产酸黄曲霉菌及其应用,该菌于2023年04月07日保藏于中国微生物菌种保藏管理委员会普通微生物中心(CGMCC),地址:北京市朝阳区北辰西路1号院3号,中国科学院微生物研究所,其保藏编号为CGMCC NO.40560。本发明还提供黄曲霉菌(Aspergillus flavus)ZJ‑6在制备用于淋洗铀污染土壤发酵修复液中的应用,发酵液能够有效的淋洗铀矿区场地土壤,生物安全性高,无污染,适合铀矿区土壤的修复。本发明为微生物淋滤技术修复实际铀矿区污染土壤的发展提供了良好的菌种资源。使用该微生物菌剂具有绿色环保、无农药残留的特点,生物安全性高,在使用后避免了致病菌产生抗药性。
Description
技术领域
本发明涉及微生物技术领域,具体涉及一株耐铀产酸黄曲霉菌及其应用。
背景技术
随着社会工业化的发展,核能作为一种低碳清洁能源,已成为我国重要的能源之一。随着核能的迅速发展,加速了铀矿的开采和冶炼,导致了铀矿周边环境污染问题日益严重,尤其是对土壤环境的污染。生物修复法既经济实用又无二次污染,是修复污染土壤的重要途径。
在此形势下寻找一种低成本、绿色环保、效率高的修复技术尤为关键,而微生物淋滤技术兼具以上优点,可以对铀矿区周边污染土壤进行治理。生物淋滤技术的核心在于筛选出耐重金属的产酸菌株,然后利用菌株产生的有机酸与土壤中的重金属发生络合反应,使得土壤中的重金属从固相进入液相,最终达到修复土壤的目的。但是目前运用生物淋滤技术修复实际铀矿区污染土壤的研究较少。因此,获得适用矿区铀污染土壤的生物淋洗技术具有积极意义。
发明内容
本发明的目的在于提供了一株耐铀产酸黄曲霉菌(Aspergillus flavus)ZJ-6,该菌于2023年04月07日保藏于中国微生物菌种保藏管理委员会普通微生物中心(CGMCC),地址:北京市朝阳区北辰西路1号院3号,中国科学院微生物研究所,其保藏编号为CGMCCNO.40560。
本发明的黄曲霉菌(Aspergillus flavus)ZJ-6是从铀矿区污染土壤中分离筛选出来的,为好氧真菌,菌落直径达2cm~3cm,结构疏松,边缘不规则,由分支状菌丝组成,菌丝生长初期为白色短绒状,向四周平铺生长,生长后期菌落中央长出大量黄绿色孢子,基内菌丝具有分隔,深入培养基内部;气生菌丝长在培养基上方的空气中,其顶端形成长而粗糙的分生孢子梗,分生孢子梗顶端膨大形成椭圆形的顶囊,由顶囊向外辐射长出1-2层小梗,最上层小梗顶端生成成串的圆形分生孢子(如图1和图2所示)。
本发明通过ITS rDNA序列方法对菌株进行了分类鉴定,将所得菌株序列通过Genebank序列比对,利用MEGA6建立系统发育树,结果表明:所述黄曲霉菌株基因序列与菌株Aspergillus flavus最为接近,同源性达到100%(如图3所示),确定属于黄曲霉菌属,将其命名为耐铀产酸黄曲霉菌(Aspergillus flavus)ZJ-6。
本发明的第二个目的是提供黄曲霉菌(Aspergillus flavus)ZJ-6在制备用于淋洗铀污染土壤发酵修复液中的应用,发酵液能够有效的淋洗铀矿区场地土壤,生物安全性高,无污染,适合铀矿区土壤的修复。
进一步的,所述用于淋洗铀污染土壤发酵修复液的制备方法,包括以下步骤:
1)制备马铃薯蔗糖琼脂培养基液体培养基,高温灭菌20-30min,备用;
2)在灭过菌的超净台内,以种量为2‰进行接种,用移液器取黄曲霉菌(Aspergillus flavus)ZJ-6母液加入到马铃薯蔗糖琼脂培养基液体培养基内,备用;
3)将步骤2)得到的接种后的培养基置于30℃的培养箱内培养72h,即得到用于淋洗铀污染土壤发酵修复液。
与现有技术相比,本发明有益效果如下:
本发明为微生物淋滤技术修复实际铀矿区污染土壤的发展提供了良好的菌种资源。使用该微生物菌剂具有绿色环保、无农药残留的特点,生物安全性高,在使用后避免了致病菌产生抗药性。
附图说明
图1为实施例1中黄曲霉菌ZJ-6在PSA培养基上培养3d后的菌落生长形态图;
图2为实施例1中黄曲霉菌ZJ-6菌株在光学显微镜下放大1000倍的孢子梗形态图;
图3为实施例1中黄曲霉菌ZJ-6系统发育树图;
图4为实施例2中黄曲霉菌ZJ-6的耐铀性能统计图;
图5为实施例2中黄曲霉菌ZJ-6pH值变化图;
图6为实施例2中黄曲霉菌ZJ-6发酵液在pH为4.35时有机酸色谱图;
图7为实施例4中黄曲霉菌ZJ-6在最佳产酸条件下的淋洗效果图。
具体实施方式
以下结合具体实施例对本发明作进一步详细说明。
实施例1:菌株的筛选与鉴定
1.菌株筛选
1)采集铀污染土壤样品,除去杂质、过100目筛、称取1g样品于紫外超净台备用;
2)无菌条件下,将1g样品移入装有99mL无菌水的三角瓶中,加入玻璃珠振荡使其均匀分散开,取1mL土壤悬液加入9mL无菌水内进行梯度稀释,以此类推,分别将土壤悬液样品稀释到10-2g/mL、10-3g/mL、10-4g/mL、10-5g/mL、10-6g/mL等不同浓度梯度的样品,备用;
3)马铃薯蔗糖琼脂培养基(PSA)培养基:将新鲜的土豆去皮洗净后称取200g,然后切成小块,加入1000ml蒸馏水煮沸20~30min,用8层纱布过滤得到土豆浸汁;称取20g蔗糖、15~20g琼脂(固体培养基加琼脂,液体不加),加入土豆浸汁中搅拌融化,最后加入蒸馏水补充至1000mL,充分溶解定容后于高温灭菌锅内121℃灭菌20min;
4)每个浓度样品取100μL涂布于马铃薯蔗糖琼脂培养基(PSA)固体培养基上,每组浓度设置三个平行,并设置对照组;
5)置于30℃的恒温培养箱中倒置培养3-5d;
6)反复划线纯化直至得到单菌落;
7)置于4℃保藏备用。
2.菌株ZJ-6的生物学鉴定
本实施例通过ITS rDNA序列方法对菌株进行了分类鉴定。
1)提取本实施例中分离得到的菌株的DNA,扩增ITS rDNA的序列。ITS rDNA基因PCR扩增中所使用的引物委托杭州美迪贝生物科技有限公司合成,其序列为:
ITS1:5'-TCCGTAGGTGAACCTGCGG-3';
ITS4:5'-TCCTCCGCTTATTGATATGC-3',扩增片段大小约500bp~1000bp;
2)扩增产物进行sanger双向测序,测序结果在Genebank上比对分析,利用MEGA6建立系统发育树,结果表明:所述黄曲霉菌株基因序列与菌株Aspergillus flavus最为接近,同源性达到100%(如图3所示)。
本实施例还结合形态学特征对所述黄曲霉菌株进行了分类鉴定。菌株ZJ-6在PSA培养基上培养3d后的菌落生长形态如图1所示。在光学显微镜下放大1000倍的孢子、孢子梗的形态如图2所示,呈现的形态学特征为:菌株生长迅速,菌落直径达2cm~3cm,结构疏松,边缘不规则,由分支状菌丝组成,菌丝生长初期为白色短绒状,向四周平铺生长,生长后期菌落中央长出大量黄绿色孢子,基内菌丝具有分隔,深入培养基内部;气生菌丝长在培养基上方的空气中,其顶端形成长而粗糙的分生孢子梗,分生孢子梗顶端膨大形成椭圆形的顶囊,由顶囊向外辐射长出1-2层小梗,最上层小梗顶端生成成串的圆形分生孢子。
结合菌株形态观察、培养特性及ITS rDNA的鉴定结果,将本发明所述黄曲霉菌命名为黄曲霉菌ZJ-6。
实施例2:黄曲霉菌ZJ-6的耐铀产酸活性
1.黄曲霉菌ZJ-6的耐铀活性
将PSA固体培养基经过121℃、20min高温灭菌后,分别加入不同体积的铀标准溶液(1g/L),混合均匀后倒入平板得到0mg/L、50mg/L、75mg/L、100mg/L、125mg/L、150mg/L铀浓度的固体培养基,每个浓度设置三个平行样,当含重金属的平板凝固后,在平板中央接入真菌母液并且设置未接种真菌母液的培养基作为空白对照,将培养基置于恒温培养箱中,培养温度设为30℃,等到无铀培养基上菌落的直径不再变化时,采用十字交叉的方法测定不同铀浓度培养基上菌落的直径,通过抑制率来表示真菌对于铀的耐受程度。计算公式为:
抑制率=(无铀培养基中菌落的直径-含铀培养基中菌落的直径)/无铀培养基中菌落的直径
黄曲霉菌ZJ-6在不同铀浓度固体培养基中所受到的抑制率如图4所示,随着铀浓度的不断上升,黄曲霉菌ZJ-6受到的抑制程度也在不断加深。当铀浓度为50mg/L时,对于黄曲霉菌ZJ-6的抑制程度为25.9%,当铀浓度为75mg/L和100mg/L时,对于黄曲霉菌ZJ-6的抑制程度分别为48.27%和67.18%,当铀浓度为125mg/L和150mg/L时,对于黄曲霉菌ZJ-6的抑制程度为87.16%和100%,此时抑制明显。
2.黄曲霉菌ZJ-6的产酸活性
向100ml PSA液体培养基中接种2‰的黄曲霉菌ZJ-6母液,培养基初始pH设置为7.0,然后置于恒温振荡培养箱中培养,转速设置为160rpm/min,培养温度设为30℃,每个样品设置3个平行,且设置空白对照,培养12h、24h、36h、48h、60h、72h取样并测定发酵液的pH。
黄曲霉菌ZJ-6发酵液pH的变化情况表明:黄曲霉菌ZJ-6在0-24h范围内pH保持稳定,24-60h范围内pH快速降低,60-84h范围内pH缓慢降低,84h以后pH保持稳定,黄曲霉ZJ-6在72h时pH降到最低为4.35(如图5所示)。说明黄曲霉菌ZJ-6在生长代谢过程中能够产生大量的有机酸,且黄曲霉菌ZJ-6能够快速适应酸性环境,不断代谢产生有机酸。
在最佳产酸条件下培养时,发酵液pH越低产生的有机酸种类越丰富,浓度越高。黄曲霉菌ZJ-6在培养72h后产生的有机酸浓度最高主要产生草酸(24.49μg/ml)、苹果酸(462.46μg/ml)、乳酸(14.60μg/ml)、柠檬酸(2493.42μg/ml)和琥珀酸(151.80μg/ml)(如图6所示)。
实施例3:黄曲霉菌ZJ-6发酵液的制备
1)制备马铃薯蔗糖琼脂培养基(PSA)液体培养基1000mL,高温灭菌20-30min,备用;
2)在灭过菌的超净台内,用移液器取黄曲霉菌ZJ-6母液2mL加入到PSA液体培养基内,定容至1000mL(即以种量为2‰进行接种),备用;
3)上述接种后的培养基置于30℃的培养箱内,培养72h,即为用于淋洗铀污染土壤发酵修复液。
实施例4:黄曲霉菌ZJ-6的生物淋洗效能
在30℃条件下,精确称量8.00g土样置于三角瓶中,固液比设置1g:10ml,加入黄曲霉菌ZJ-6发酵液,并置于恒温振荡培养箱中180rpm/min,30℃,淋洗0.17h、0.5h、1h、3h、6h、12h、24h、36h,48h,60h,72h和84h取样,测定铀浓度,铀浓度测定之前将样品置于离心管中,利用高速冷冻离心机离心4000rpm/min,10min,取上清液加入5%稀硝酸酸化,过0.22um滤膜,利用ICP测定,每个样品设置三个平行样和空白对照。
结果表面,黄曲霉ZJ-6发酵液淋洗率随时间的变化情况表明:黄曲霉ZJ-6发酵液淋洗率在0-1h内的淋洗率呈直线上升趋势,在1-12h内土壤中铀的淋洗率上升趋势变缓,12h之后土壤中铀的淋洗率趋于平稳。黄曲霉ZJ-6发酵液的最大淋洗率依此为56.76%(如图7所示),由此可以看出,黄曲霉ZJ-6发酵液具有淋洗铀污染土壤的作用,为之后深入探索铀污染土壤的修复研究提供重大意义。
Claims (3)
1.一株耐铀产酸黄曲霉菌(Aspergillus flavus)ZJ-6,其特征在于,黄曲霉菌(Aspergillus flavus)ZJ-6于2023年04月07日保藏于中国微生物菌种保藏管理委员会普通微生物中心,保藏号为CGMCC NO. 40560。
2.根据权利要求1所述的黄曲霉菌(Aspergillus flavus)ZJ-6在制备用于淋洗铀污染土壤发酵修复液中的应用。
3.一种用于淋洗铀污染土壤发酵修复液的制备方法,其特征在于,包括以下步骤:
1) 制备马铃薯蔗糖琼脂培养基液体培养基,高温灭菌20-30min,备用;
2) 在灭过菌的超净台内,以种量为2‰进行接种,用移液器取权利要求1中所述的黄曲霉菌(Aspergillus flavus)ZJ-6的母液加入到马铃薯蔗糖琼脂培养基液体培养基内,备用;
3)将步骤2)得到的接种后的培养基置于30℃的培养箱内培养72h,即得到用于淋洗铀污染土壤发酵修复液。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311045031.4A CN116836820B (zh) | 2023-08-18 | 2023-08-18 | 一株耐铀产酸黄曲霉菌及其应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202311045031.4A CN116836820B (zh) | 2023-08-18 | 2023-08-18 | 一株耐铀产酸黄曲霉菌及其应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN116836820A CN116836820A (zh) | 2023-10-03 |
CN116836820B true CN116836820B (zh) | 2024-01-26 |
Family
ID=88171064
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202311045031.4A Active CN116836820B (zh) | 2023-08-18 | 2023-08-18 | 一株耐铀产酸黄曲霉菌及其应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN116836820B (zh) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2712287A1 (de) * | 1977-03-21 | 1978-09-28 | Reuter Technologie Gmbh | Verfahren zur laugung von uranhaltigen phosphatmineralien |
CN1597923A (zh) * | 2004-08-13 | 2005-03-23 | 山东省食品发酵工业研究设计院 | 一株曲霉菌及利用其生产果酸钙的方法 |
CN113337409A (zh) * | 2021-07-26 | 2021-09-03 | 东华理工大学 | 一种黑曲霉菌株738y-15mj及其应用 |
-
2023
- 2023-08-18 CN CN202311045031.4A patent/CN116836820B/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2712287A1 (de) * | 1977-03-21 | 1978-09-28 | Reuter Technologie Gmbh | Verfahren zur laugung von uranhaltigen phosphatmineralien |
CN1597923A (zh) * | 2004-08-13 | 2005-03-23 | 山东省食品发酵工业研究设计院 | 一株曲霉菌及利用其生产果酸钙的方法 |
CN113337409A (zh) * | 2021-07-26 | 2021-09-03 | 东华理工大学 | 一种黑曲霉菌株738y-15mj及其应用 |
Non-Patent Citations (3)
Title |
---|
Aspergillus niger changes the chemical form of uranium to decrease its biotoxicity, restricts its movement in plant and increase the growth of Syngonium podophyllum;Zou Chao等;《Chemosphere》;参见全文 * |
黑曲霉浸铀过程中的形态特征及其对铀浸出的影响;李广悦等;《稀有金属》;参见全文 * |
黑麦草-根内球囊霉联合修复铀污染土壤;郭晨冉等;《有色金属(冶炼部分)》;参见全文 * |
Also Published As
Publication number | Publication date |
---|---|
CN116836820A (zh) | 2023-10-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110042061B (zh) | 高产赤霉素ga3的藤仓赤霉菌突变株及其应用 | |
CN108676755B (zh) | 一种含芽孢杆菌的微生物液体肥及其制备方法和应用 | |
CN106916765B (zh) | 一种利用微紫青霉菌吸附废水中重金属锌的方法 | |
CN104531537A (zh) | 一种黄曲霉菌株及其应用 | |
CN105802861A (zh) | 一种聚多曲霉及其应用 | |
CN105567575A (zh) | 一株紫孢菌新菌株f1及其应用 | |
CN116836820B (zh) | 一株耐铀产酸黄曲霉菌及其应用 | |
CN105505798B (zh) | 一种产麦角甾醇内生真菌及其应用 | |
CN105349481B (zh) | 一种红豆杉根际多环芳烃降解菌的筛选方法及应用 | |
CN107384804A (zh) | 赤霉菌nt‑1及其应用 | |
CN116200286B (zh) | 一株高效糖化纤维素的热纤梭菌及其应用 | |
CN104152358B (zh) | 一种耐辐射青霉及在吸附放射性锶90生物处理中的应用 | |
CN107603893B (zh) | 一种对镉具有高抗性的紫胞菌及提取方法和应用 | |
CN109868239A (zh) | 一种阿维菌素菌株及其筛选方法 | |
CN106591173A (zh) | 一种可活化土壤重金属镉的弯曲芽孢杆菌(Bacillus flexus)HL‑37及其应用 | |
CN116064248A (zh) | 一株溜曲霉及其在铅污染土壤修复中的应用 | |
CN117448169A (zh) | 一株耐铀产酸青霉菌及其应用 | |
CN109486698A (zh) | 一株高耐铅的肠杆菌及其应用 | |
CN116836819A (zh) | 一种微生物复合菌剂及其应用 | |
CN108277166B (zh) | 一株棘孢木霉及其在铅污染土壤修复中的应用 | |
CN105274013B (zh) | 汉逊德巴利酵母及其在处理高浓度硫酸铵的工业废水中的应用 | |
CN116925932B (zh) | 一株真菌贵州木霉及其应用 | |
CN105647812A (zh) | 一株裂褶菌菌株及其在普洱茶生产中的应用 | |
CN116103178B (zh) | 一种耐铜且高富集铜的毕赤酵母菌株及其应用 | |
CN117801966B (zh) | 一株真菌及其应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
CB02 | Change of applicant information |
Address after: 344000 No.56 Xuefu Road, Linchuan District, Fuzhou City, Jiangxi Province Applicant after: EAST CHINA INSTITUTE OF TECHNOLOGY Address before: No.330418, Guanglan economic and Technological Development Zone, Nanchang City, Jiangxi Province Applicant before: EAST CHINA INSTITUTE OF TECHNOLOGY |
|
CB02 | Change of applicant information | ||
GR01 | Patent grant | ||
GR01 | Patent grant |