CN116496911A - 一种米卡芬净中间体fr901379高产菌株及其应用 - Google Patents
一种米卡芬净中间体fr901379高产菌株及其应用 Download PDFInfo
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- CN116496911A CN116496911A CN202310455004.8A CN202310455004A CN116496911A CN 116496911 A CN116496911 A CN 116496911A CN 202310455004 A CN202310455004 A CN 202310455004A CN 116496911 A CN116496911 A CN 116496911A
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- 230000004151 fermentation Effects 0.000 claims abstract description 59
- 238000004321 preservation Methods 0.000 claims abstract description 11
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- 239000001963 growth medium Substances 0.000 claims description 21
- 239000000843 powder Substances 0.000 claims description 21
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- 239000008103 glucose Substances 0.000 claims description 15
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 14
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- 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 12
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- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 7
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Classifications
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- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K7/00—Peptides having 5 to 20 amino acids in a fully defined sequence; Derivatives thereof
- C07K7/50—Cyclic peptides containing at least one abnormal peptide link
- C07K7/54—Cyclic peptides containing at least one abnormal peptide link with at least one abnormal peptide link in the ring
- C07K7/56—Cyclic peptides containing at least one abnormal peptide link with at least one abnormal peptide link in the ring the cyclisation not occurring through 2,4-diamino-butanoic acid
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P21/00—Preparation of peptides or proteins
- C12P21/02—Preparation of peptides or proteins having a known sequence of two or more amino acids, e.g. glutathione
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Abstract
本发明提供一种菌株HQ‑MK‑011,拉丁学名为Colephoma empetri,保藏编号为CGMCC No.40516,于2023年03月06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。本发明菌株HQ‑MK‑011为诱变得到的高产菌株,发酵单位较高,且能稳定生产FR901379。通过本发明菌株HQ‑MK‑011得到的发酵液粘度明显减少,有利于溶氧的传递,使得发酵罐得到相同产量的周期明显缩短,相同周期的发酵单位明显提高,最高可达约4g/L。通过本发明菌株的得到的发酵液的杂质比例下降,使下游提取工艺成本减少,有利于工业化生产。
Description
技术领域
本发明属于微生物发酵领域,具体涉及一种产米卡芬净中间体FR901379的高产菌株及其制备方法和应用。
背景技术
FR901379是合成米卡芬净类药的重要前体物质,通过脱酰化作用后得到米卡芬净母核FR179642,米卡母核化学合成得到的新型棘白菌素类抗真菌药物米卡芬净;它对念珠菌如白念珠菌、光滑念珠菌、热代念珠菌、克柔念珠菌和近平滑念珠菌有较好的抑制活性,对于曲霉也有良好的体外抑制活性,但对于新生隐球菌、镰刀菌、接合菌和白吉利毛孢子菌等无抑制活性。
米卡芬净(Micafungin)商品名为Fungusrd,可以用于治疗食道念珠菌感染、骨髓移植及ADS患者中性粒细胞减少症的预防治疗。
FR901379可以通过发酵菌株进行生产。
中国专利CN202210496769.1中公开了一株高产FR901379的菌株,所述菌株为岩高兰鞘茎点霉(Coleophoma empetri)H40-23,所述菌株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),保藏编号为CGMCC No.40075,保藏日期为2022年1月29日,该发明还提供了上述菌株在生产FR901379中的应用。该菌株FR901379产量为587.8mg/L,比对照菌株(365.2mg/L)高222mg/L,比诱变前提高了60.8%。但其产量对于实际生产仍有较大的提升空间。
中国专利CN201810536315.6中公开了一种FR179642的制备方法,该方法包括:1)发酵FR901379的培养基的制备;2)将菌株Coleophoma empetri种子培养液接种于发酵培养基进行发酵;3)在发酵培养24-72h后,向发酵液中补加棕榈酸甲酯和二甲基硅油混合物;4)当发酵160h后,FR901379的浓度不再增长时,发酵结束;5)将上一步得到的FR901379与脱酰酶交联酶聚体反应,转化为FR179642。其方法中FR901379放罐浓度为3.40g/L。虽然FR901379产量有所提升,但其适用的培养基粘度会偏高,不利于溶氧传递。此外,该专利中的菌株发酵通过补加棕榈酸甲酯和二甲基硅油来提高FR901379的产素水平,使发酵成本增加且工艺更加复杂化。因此,获得更优良的种质资源对于FR901379的生产十分必要。
发明内容
为了解决上述问题,本发明提供了提供了一种菌株HQ-MK-011,通过对其进行发酵,可以大量生产FR901379,能够为米卡芬净类药的生产提供大量原料,解决临床需求问题。
一方面,本发明提供了一种菌株HQ-MK-011。
所述的菌株HQ-MK-011的拉丁学名为Coleophoma empetri,保藏编号为CGMCCNo.40516,于2023年03月06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。
所述的菌株HQ-MK-011的菌落颜色为灰黑色,表面有凹痕。
另一方面,本发明提供了前述的菌株HQ-MK-011在制备FR901379中的应用。
再一方面,本发明提供了一种生产FR901379的方法。
所述的方法中包括将权利要求1所述的菌株HQ-MK-011接种于培养基后进行发酵。
具体地,所述的培养基为含有可同化的碳源和氮源的营养培养基。
优选地,所述的可同化碳源选自糊精、淀粉、蔗糖、麦芽糖、葡萄糖、甘油、乳糖、海藻糖、木糖醇、山梨醇之一或者上述物质的组合。
优选地,所述的可同化氮源选自大豆蛋白胨、酵母蛋白胨、酵母粉、酵母抽提物、黄豆饼粉、花生饼粉、麸质粉、棉籽饼粉、玉米浆干粉、牛肉浸膏、酵母膏、尿素、铵盐之一或者上述物质的组合。
优选地,所述的培养基中还包括无机盐,所述的无机盐选自柠檬酸三钠、磷酸二氢钾、磷酸氢二钾、氯化钾、硫酸镁、硫酸亚铁、碳酸钙、硫酸锌、硫酸铵、氯化钙、硫酸铜之一或者组合。
具体地,所述的发酵为有氧发酵。
优选地,所述的有氧发酵的温度为22-30℃,优选为24-28℃;培养基pH4-9,优选为5-8;培养时间为144-264h,优选为168-240h。
进一步优选地,所述的营养培养基包括蔗糖5-30g/L、玉米淀粉10-50g/L、葡萄糖10-40g/L、山梨醇20-100g/L、麦芽糊精10-40g/L、棉籽饼粉5-30g/L、麸质粉10-50g/L、酵母粉10-40g/L、黄豆饼粉5-30g/L、碳酸钙1-10g/L、磷酸二氢钾2-10g/L、硫酸铵5-40g/L、硫酸镁1-5g/L、硫酸锰0.1-1g/L、硫酸亚铁0.1-1g/L、硫酸锌0.01-0.1g/L。
具体地,所述的菌株HQ-MK-011先制备种子液再接种于培养基进行发酵。
所述的种子液由菌株HQ-MK-011接种于种子培养基进行培养得到。
所述的种子培养基的组成可以是:可溶性淀粉10-40g/L、蔗糖10-40g/L、葡萄糖10-50g/L、棉籽饼粉10-50g/L、黄豆饼粉10-40g/L、磷酸二氢钾1-5g/L、碳酸钙1-8g/L。
所述的种子液的培养温度22-30℃,优选为23-28℃;培养基pH4-9,优选为pH5-8;培养时间32-64h,优选为培养时间为40-54h。
优选地,所述方法中包括:将菌株HQ-MK-011在固体培养中进行菌落培养,然后接种于种子培养基进行种子培养,再移种于发酵培养基进行发酵培养。
本发明同时提供了前述的菌株HQ-MK-011的发酵液。
所述的发酵液可以通过上述的方法制备得到。
本发明菌株HQ-MK-011与现有技术中FR901379产生菌相比具有以下优点:
(1)本发明菌株HQ-MK-011为诱变得到的高产菌株,发酵单位较高,且能稳定生产F901379。
(2)通过本发明菌株HQ-MK-011得到的发酵液,粘度明显减少,有利于溶氧的传递,使得发酵罐得到相同产量的周期明显缩短,相同周期的发酵单位明显提高,最高可达4g/L。
(3)通过本发明菌株的得到的发酵液的杂质比例下降,使下游提取工艺成本减少,有利于工业化生产。
保藏说明
菌株名称:HQ-MK-011;
拉丁学名:Coleophoma empetri;
保藏编号:CGMCC No.40516;
保藏时间:2023年03月06日;
保藏单位:中国微生物菌种保藏管理委员会普通微生物中心(CGMCC);
保藏地址: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。
附图说明
图1为诱变前原始菌落照片。
图2为诱变菌株HQ-MK-011菌落照片。
图3为原始菌株发酵的HPLC图谱。
图4为诱变菌株HQ-MK-011的HPLC图谱。
需要说明的是,图3-4为仪器直出图,重叠数字部分不影响结果认定。
具体实施方式
下面结合具体实施例,对本发明作进一步详细的阐述,下述实施例不用于限制本发明,仅用于说明本发明。以下实施例中所使用的实验方法如无特殊说明,实施例中未注明具体条件的实验方法,通常按照常规条件,下述实施例中所使用的材料、试剂等,如无特殊说明,均可从商业途径得到。
下述实例中调节培养基料液pH所用的试剂均为氢氧化钠或盐酸。
实施例1菌株来源
本发明菌株HQ-MK-011系通过诱变自然界筛选的原始菌株得到的突变菌株。原始菌株自浙江台州的河面腐烂物中分离得到。
具体诱变方法如下:
(1)从-80℃冰箱取出一支原始菌株冻存管,吸取0.2mL原始菌株菌悬液到PDA斜面上,用钢签涂匀后,放于25℃培养箱培养,7天后,在无菌条件下用接种铲将菌丝体刮到无菌水管中,打散后菌丝体悬浮于无菌水中,制得菌悬液供NTG(亚硝基胍)诱变处理。
(2)称取10mg NTG,加入2-4滴胺甲醇溶液,于水浴充分溶解,加入5mL蒸馏水,使NTG浓度为2mg/mL。取5mL菌悬液,加入5mL NTG溶液,30℃保温处理一定时间后,离心收集菌体,用无菌水离心洗涤数次,以终止NTG诱变作用。
(3)单菌落的制备
平板培养基采用马铃薯葡萄糖琼脂培养基(PDA):马铃薯200g/L,葡萄糖20g/L,琼脂20g/L,pH自然。121℃灭菌30分钟,等冷却至50-60℃倒入无菌平皿中备用。将处理过的菌悬液经适当稀释后,吸0.1mL菌悬液到PDA平板上,涂布均匀后放于25℃培养箱培养。未经处理的菌悬液经适当稀释后涂布于PDA平板上作为对照,放于25℃培养箱培养。单菌落培养7-9天。
(4)种子液的制备
种子培养基配方:可溶性淀粉10g/L、蔗糖20g/L、葡萄糖10g/L、棉籽饼粉15g/L、黄豆饼粉10g/L、磷酸二氢钾3g/L、碳酸钙5g/L。自来水溶解定溶后,pH调至6.5,摇瓶装量为25mL/250mL,121℃灭菌30分钟。每个摇瓶接入一个单菌落,培养温度23-27℃,培养湿度35-65%,放于250rpm摇床培养,培养周期48小时。
(5)发酵液的制备
发酵培养基配方:蔗糖5g/L、玉米淀粉10g/L、葡萄糖10g/L、山梨醇100g/L、棉籽饼粉20g/L、麸质粉10g/L、酵母粉10g/L、黄豆饼粉15g/L、碳酸钙5g/L、磷酸二氢钾2g/L、硫酸铵5g/L、硫酸镁1g/L、硫酸锰0.1g/L、硫酸亚铁0.1g/L、硫酸锌0.01g/L。自来水溶解定溶后,pH调至6.5,摇瓶装量为25mL/250mL,121℃灭菌30分钟。种子液按10%(体积百分比)接入发酵培养基中,培养温度23-27℃,培养湿度35-65%,放于250rpm摇床培养,培养周期9天。
经过NTG诱变后,挑出了600个菌落进行摇瓶初筛发酵,发酵周期结束后,吸1mL发酵液和4mL无水乙醇到离心管中震荡半小时后,4000rpm离心10分钟,上清液经膜过滤后进行HPLC检测。通过摇瓶初筛筛选到了产FR901379的高产突变菌株即菌株HQ-MK-011。
原始菌株(图1)在PDA培养皿中长出的菌落颜色为黑色,表面无凹痕,生长速度较快。而诱变菌株HQ-MK-011(图2)菌落颜色为灰黑色,表面有凹痕,生长速度较慢。
诱变菌株HQ-MK-011于2023年03月06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,分类命名为Colephoma empetri,保藏编号为CGMCCNo.40516。
实施例2摇瓶发酵制备FR901379的方法
包括以下步骤:
(1)斜面的制备
斜面培养基采用马铃薯葡萄糖琼脂培养基(PDA):马铃薯200g/L,葡萄糖20g/L,琼脂20g/L,pH自然。121℃灭菌30分钟,冷却至50-60℃倾斜放置冷却凝固后备用。从冰箱里取出菌株冻存管,吸0.2mL菌悬液到斜面上,涂匀后放于25℃培养箱培养7天。
(2)种子液的制备
种子培养基配方:可溶性淀粉10g/L、蔗糖20g/L、葡萄糖10g/L、棉籽饼粉15g/L、黄豆饼粉10g/L、磷酸二氢钾3g/L、碳酸钙5g/L。自来水溶解定容后,pH调至6.5,摇瓶装量为25mL/250mL,121℃灭菌30分钟。每个摇瓶接入1/20支斜面的菌体量,培养温度25±1℃,培养湿度35%-65%,放于250rpm摇床培养,培养周期48小时。
(3)发酵液的制备
发酵培养基配方:蔗糖5g/L、玉米淀粉10g/L、葡萄糖10g/L、山梨醇100g/L、棉籽饼粉20g/L、麸质粉10g/L、酵母粉10g/L、黄豆饼粉15g/L、碳酸钙5g/L、磷酸二氢钾2g/L、硫酸铵5g/L、硫酸镁1g/L、硫酸锰0.1g/L、硫酸亚铁0.1g/L、硫酸锌0.01g/L。自来水溶解定容后,pH调至6.5,摇瓶装量为25mL/250mL,121℃灭菌30分钟。种子液按10%(体积百分比)接入发酵培养基中,培养温度23-27℃,培养湿度35%-65%,放于250rpm摇床培养,培养周期9天。对发酵液进行HPLC检测,FR901379的HPLC的检测条件:
色谱柱:Unitary C18(4.6×250mm,5μm);
流速:1mL/min;
检测波长:210nm;
进样体积:20μL;
温度:35℃;
分析时长:17min;
流动相为乙腈:缓冲液=50:50(V/V);
缓冲液:1%磷酸二氢铵水溶液。
原始菌株与诱变菌株HQ-MK-011的FR901379发酵能力结果如下:
原始菌 | HQ-MK-011 | |
FR901379发酵单位 | 654mg/L | 3790mg/L |
实施例3 50L发酵罐制备FR901379
(1)斜面的制备
斜面培养基采用马铃薯葡萄糖琼脂培养基(PDA):马铃薯200g/L,葡萄糖20g/L,琼脂20g/L,pH自然。121℃灭菌30分钟,冷却至50-60℃倾斜放置冷却凝固后备用。从冰箱里取出菌株HQ-MK-011的冻存管,吸0.2mL菌悬液到斜面上,涂匀后放于25℃培养箱培养7天。
(2)摇瓶种子制备
种子培养基配方:可溶性淀粉10g/L,蔗糖20g/L,葡萄糖10g/L,棉籽饼粉15g/L,黄豆饼粉10g/L,磷酸二氢钾3g/L,碳酸钙5g/L。自来水溶解定容后,pH调至6.5,摇瓶装量为25mL/250mL,121℃灭菌30分钟。每个摇瓶接入1/20支斜面的菌体量,培养温度25±1℃,培养湿度35%-65%,放于250rpm摇床培养,培养周期48小时。
(3)种子罐种子制备
种子培养基配方:可溶性淀粉10g/L,蔗糖20g/L,葡萄糖10g/L,棉籽饼粉15g/L,黄豆饼粉10g/L,玉米浆干粉10g/L,磷酸二氢钾3g/L,碳酸钙5g/L,THIX-298 0.5g/L,pH调至6.5,121℃灭菌30分钟。接种量0.25%±0.05%,培养温度25±1℃,搅拌转速200-500rpm,空气流量0.5-1vvm,培养时间43-50h。
(4)50L发酵罐发酵液的制备
发酵培养基配方(g/L):蔗糖5g/L、玉米淀粉10g/L、葡萄糖10g/L、山梨醇100g/L、棉籽饼粉20g/L、麸质粉10g/L、酵母粉10g/L、黄豆饼粉15g/L、碳酸钙5g/L、磷酸二氢钾2g/L、硫酸铵5g/L、硫酸镁1g/L、硫酸锰0.1g/L、硫酸亚铁0.1g/L、硫酸锌0.01g/L,THIX-2980.5g/L。pH调至6.5,121℃灭菌30分钟。移种量2%-2.5%,培养温度25±1℃,搅拌转速150-550rpm,空气流量0.5-1vvm,发酵周期在24h左右,开始补氨水,维持发酵液pH在6.0-6.5,后期pH自然回升则停止;山梨醇含量<4.0%时开始补50%的山梨醇,维持山梨醇含量在1.0%-4.0%之间。培养周期10±1天,放罐效价为3.8-4.2g/L。
实施例4发酵液检测
对实施例3中的发酵液进行检测,具体包括发酵液粘度和杂质比例。
(1)发酵液粘度
对原始菌株和HQ-MK-011制备的菌液分别进行发酵粘度检测,具体方法为:分别从原始菌株和HQ-MK-011的发酵液中取10mL到塑料试管中,把数显粘度计(NDJ-5S)的旋转叶片放入装有发酵液的试管中,保证粘度计放入发酵液中间,等显示数据不再跳动后,读出相应的粘度值。
结果如下:
原始菌 | HQ-MK-011 | |
粘度值 | 3500mpa.s | 800mpa.s |
结果表明:HQ-MK-011的发酵液粘度明显低于原始菌的发酵液粘度,很好地解决了发酵液因为粘度高溶氧传递不好的问题,使FR901379的发酵水平明显提高。
(2)杂质比例
对原始菌株和HQ-MK-011制备的菌液分别进行发酵杂质比例检测,具体方法为:各取发酵液1mL,分别加4mL乙醇进行混匀震荡15分钟,4000rpm离心10分钟后取上清进行HPLC检测,HPLC检测条件参照实施例2。
结果见图3-4:原始菌的图谱中8.6分钟有一个很高的杂质峰,而菌株HQ-MK-011在此位置附近杂质峰很少。
Claims (10)
1.一种菌株HQ-MK-011,其特征在于,拉丁学名为Colephoma empetri,保藏编号为CGMCC No.40516。
2.权利要求1所述的菌株HQ-MK-011在制备FR901379中的应用。
3.一种生产FR901379的方法,其特征在于,包括将权利要求1所述的菌株HQ-MK-011接种于培养基后进行发酵。
4.根据权利要求3所述的方法,其特征在于,所述的培养基为含有可同化的碳源和氮源的营养培养基。
5.根据权利要求4所述的方法,其特征在于,所述的发酵为有氧发酵。
6.根据权利要求4所述的方法,其特征在于,所述的可同化碳源选自糊精、淀粉、蔗糖、麦芽糖、葡萄糖、甘油、乳糖、海藻糖、木糖醇、山梨醇之一或者上述物质的组合。
7.根据权利要求4所述的方法,其特征在于,所述的可同化氮源选自大豆蛋白胨、酵母蛋白胨、酵母粉、酵母抽提物、黄豆饼粉、花生饼粉、麸质粉、棉籽饼粉、玉米浆干粉、牛肉浸膏、酵母膏、尿素、铵盐之一或者上述物质的组合。
8.根据权利要求4所述的方法,其特征在于,所述的培养基中还包括无机盐,所述的无机盐选自柠檬酸三钠、磷酸二氢钾、磷酸氢二钾、氯化钾、硫酸镁、硫酸亚铁、碳酸钙、硫酸锌、硫酸铵、氯化钙、硫酸铜之一或者组合。
9.根据权利要求4所述的方法,其特征在在于,所述的有氧发酵的温度为22-30℃,培养基pH4-9,培养时间为144-264h。
10.根据权利要求3-9任一项所述的方法,其特征在于,所述的营养培养基包括蔗糖5-30g/L、玉米淀粉10-50g/L、葡萄糖10-40g/L、山梨醇20-100g/L、麦芽糊精10-40g/L、棉籽饼粉5-30g/L、麸质粉10-50g/L、酵母粉10-40g/L、黄豆饼粉5-30g/L、碳酸钙1-10g/L、磷酸二氢钾2-10g/L、硫酸铵5-40g/L、硫酸镁1-5g/L、硫酸锰0.1-1g/L、硫酸亚铁0.1-1g/L、硫酸锌0.01-0.1g/L。
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