CN1298847C - 电场强化的固态发酵生产纤维素酶方法 - Google Patents
电场强化的固态发酵生产纤维素酶方法 Download PDFInfo
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- 230000005684 electric field Effects 0.000 title claims abstract description 33
- 108010059892 Cellulase Proteins 0.000 title claims abstract description 23
- 229940106157 cellulase Drugs 0.000 title claims abstract description 23
- 230000004151 fermentation Effects 0.000 title claims abstract description 10
- 238000000855 fermentation Methods 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 5
- 238000000034 method Methods 0.000 title claims description 24
- 239000007787 solid Substances 0.000 title description 5
- 238000010563 solid-state fermentation Methods 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 235000015099 wheat brans Nutrition 0.000 claims abstract description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 5
- 235000009566 rice Nutrition 0.000 claims abstract description 5
- 241000609240 Ambelania acida Species 0.000 claims abstract description 4
- 239000010905 bagasse Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000010902 straw Substances 0.000 claims abstract description 4
- 240000007594 Oryza sativa Species 0.000 claims abstract 2
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 12
- 239000011159 matrix material Substances 0.000 claims description 12
- 239000012266 salt solution Substances 0.000 claims description 12
- 241000228212 Aspergillus Species 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 claims description 6
- 239000012978 lignocellulosic material Substances 0.000 claims description 6
- 239000010903 husk Substances 0.000 claims description 4
- 241000235527 Rhizopus Species 0.000 claims description 3
- 241000223259 Trichoderma Species 0.000 claims description 3
- 239000012153 distilled water Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 108090000790 Enzymes Proteins 0.000 abstract description 7
- 102000004190 Enzymes Human genes 0.000 abstract description 7
- 229940088598 enzyme Drugs 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005728 strengthening Methods 0.000 abstract 2
- 239000012267 brine Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 235000011148 calcium chloride Nutrition 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000012010 growth Effects 0.000 description 3
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 3
- 235000019341 magnesium sulphate Nutrition 0.000 description 3
- 239000007836 KH2PO4 Substances 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910000402 monopotassium phosphate Inorganic materials 0.000 description 2
- 235000019796 monopotassium phosphate Nutrition 0.000 description 2
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 2
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 241001557886 Trichoderma sp. Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000011169 microbiological contamination Methods 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
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- 239000002351 wastewater Substances 0.000 description 1
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Classifications
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- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Enzymes And Modification Thereof (AREA)
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Abstract
本发明公开了属于生物酶制备技术领域的一种电场强化的固态发酵生产纤维素酶方法。以稻壳、甘蔗渣或秸秆粉等木质纤维素原料、麸皮为固态发酵基质,在固态发酵基质中加入配制的无机盐水溶液,接入纤维素酶产生菌,采用电场强化发酵过程,电场的施加改善了纤维素酶的固态发酵过程,并使基质利用率显著提高,应用前景广阔。
Description
技术领域
本发明属于生物酶制备技术领域,特别涉及一种电场强化的固态发酵生产纤维素酶方法。
背景技术
纤维素酶是降解纤维素的一类酶的总称。目前纤维素酶的应用已扩展到医药、纺织、日用化工、造纸、食品发酵、工业洗涤、烟草、石油开采、废水处理及饲料等各个领域,应用前景十分广阔。
纤维素酶有固态发酵和深层液体发酵两种生产方法。与深层液体发酵相比,固态发酵模拟了微生物生长的自然环境,更适宜于微生物的生长、繁殖与代谢,同时固态发酵还具有无废水排放、生产效率高、设备投资少、能耗低、生产成本低等特点。然而,由于固态发酵过程是复杂的多相传递与反应过程的耦合,且适宜微生物生长的环境与强化通风、散热手段之间存在着一定的矛盾,因此导致传统的固态发酵存在着发酵工艺落后、底物利用率低、易染菌以及其中传质、传热困难等问题,这些问题在工业化规模生产中一直未能得到很好的解决,因此这在很大程度上制约了固态发酵技术的发展,同时也制约了适于固态发酵的产品的开发及生产。
发明内容
本发明的目的是提供一种电场强化的固态发酵生产纤维素酶方法,其特征在于:以稻壳、甘蔗渣或秸秆粉等木质纤维素原料、麸皮为固态发酵基质,加入配制的无机盐水溶液,固态发酵基质中木质纤维素原料和麸皮的质量比为(0.05-50)∶1,无机盐水溶液是1-50g的(NH4)2SO4、1-30g的KH2PO4、0.1-10g的CaCl2和0.1-10g的MgSO4溶于500-5000mL蒸馏水中配制而成,固态发酵基质和无机盐水溶液的质量比为(0.1-10)∶1,接入5-20%(指相对于发酵基质的种子液质量百分比)的纤维素酶产生菌,采用电场强化发酵过程,电场强度为0-20kv/cm,电场方向的变化频率为0-250Hz,施加电场的时间为发酵全过程,或间隔施加。
所述的纤维素酶产生菌为木霉(Trichoderma)、青霉(Penicillum)、曲霉(Aspergillus)或根霉(Rhizopus)。
本发明的有益效果是克服现有固态发酵生产纤维素酶工艺中,发酵基质不均匀、传质、传热困难,基质利用率低等缺点,本发明提供的电场强化的固态发酵生产纤维素酶方法改善了纤维素酶的固态发酵过程,提高发酵基质利用率,应用前景广阔。
具体实施方式
本发明提供一种电场强化的固态发酵生产纤维素酶方法。以稻壳、甘蔗渣或秸秆粉等木质纤维素原料、麸皮为固态发酵基质,加入配制的无机盐水溶液,固态发酵基质中木质纤维素原料和麸皮的质量比为(0.05-50)∶1,无机盐水溶液是1-50g的(NH4)2SO4、1-30g的KH2PO4、0.1-10g的CaCl2和0.1-10g的MgSO4溶于500-5000mL蒸馏水中配制而成,固态发酵基质和无机盐水溶液的质量比(0.1-10)∶1,菌种为纤维素酶产生菌,采用电场强化发酵过程,电场强度为0-20kv/cm,电场方向的变化频率为0-250Hz,施加电场的时间为发酵全过程,或间隔施加。
上述的纤维素酶产生菌为木霉(Trichoderma)、青霉(Penicillum)、曲霉(Aspergillus)或根霉(Rhizopus)等。
下面举例对本发明予以进一步说明。
实施例1
本发明按以下步骤实现电场强化的固态发酵生产纤维素酶方法,具体步骤如下:
按无菌操作将固态发酵基质与无机盐水溶液混合后,接入10%(指相对于发酵基质的种子液质量百分比)绿色木霉(Trichoderma sp.3.2942)菌种,并插入已灭菌的电极板,其固态发酵基质组成为:30%稻壳,70%麸皮;无机盐水溶液中按质量百分比浓度包括1%(NH4)2SO4、0.3%KH2PO4、0.5%MgSO4和0.5%CaCl2,发酵基质与无机盐水溶液的质量比为1∶2,pH自然;
在发酵过程的前48小时加入稳定的直流电场,电场强度为2.86v/cm,电场方向每12小时调换一次。实验结果表明与未施加电场的固态发酵过程相比,施加电场的发酵过程中每克底物可得到的纤维素酶酶活的最高值(滤纸酶活)可提高10%左右,每克底物可得到的还原糖的最高值可提高45%。
实施例2
依实施例1中的步骤,在发酵全过程120小时施加直流电场,电场强度为2.86v/cm,电场方向每12小时调换一次。实验结果表明与未施加电场的固态发酵过程相比,加入电场的发酵过程中每克底物可得到的纤维素酶酶活的最高值(滤纸酶活)可提高10%左右,每克底物可得到的还原糖的最高值可提高50%。
Claims (2)
1.一种电场强化的固态发酵生产纤维素酶方法,其特征在于:以稻壳、甘蔗渣或秸秆粉作为木质纤维素原料和麸皮一起构成固态发酵基质,加入配制的无机盐水溶液,固态发酵基质中木质纤维素原料和麸皮的质量比为(0.05-50)∶1;其中无机盐水溶液是由1-50g的(NH4)2SO4、1-30g的KH2PO4、0.1-10g的CaCl2和0.1-10g的MgSO4溶于500-5000mL蒸馏水中配制而成,固态发酵基质和无机盐水溶液的质量比为(0.1-10)∶1,接入相对于发酵基质质量百分比5-20%的纤维素酶产生菌种子液,采用电场强化发酵过程,电场强度为2.86v/cm-20kv/cm,电场方向的变化频率为0-250Hz,施加电场的时间为发酵全过程,或其中一个区段,或间隔施加。
2.根据权利要求1所述电场强化的固态发酵生产纤维素酶方法,其特征在于:所述的纤维素酶产生菌为木霉(Trichoderma)、青霉(Penicillum)、曲霉(Aspergillus)或根霉(Rhizopus)。
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CN105331521B (zh) * | 2015-10-30 | 2021-03-23 | 农业农村部规划设计研究院 | 一种应用水平电场的固态有机废物厌氧发酵箱 |
CN109593627B (zh) * | 2019-02-21 | 2021-10-22 | 卡登堡酒业(中国)有限公司 | 一种沙棘枸杞保健果酒的电场强化酿造工艺 |
CN115231701B (zh) * | 2022-07-29 | 2024-03-29 | 东北电力大学 | 可调静电场预处理强化厌氧消化产气装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN1036792A (zh) * | 1988-09-23 | 1989-11-01 | 山东大学 | 高活性纤维素酶的制造方法 |
CN1157853A (zh) * | 1996-11-13 | 1997-08-27 | 山东大学 | 高活性纤维素酶的制造方法 |
CN1327051A (zh) * | 2000-06-02 | 2001-12-19 | 唐山市冀东溶剂厂 | 一种生产纤维素酶的方法 |
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CN1036792A (zh) * | 1988-09-23 | 1989-11-01 | 山东大学 | 高活性纤维素酶的制造方法 |
CN1157853A (zh) * | 1996-11-13 | 1997-08-27 | 山东大学 | 高活性纤维素酶的制造方法 |
CN1327051A (zh) * | 2000-06-02 | 2001-12-19 | 唐山市冀东溶剂厂 | 一种生产纤维素酶的方法 |
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