Article(id=1321170264017191638, tenantId=1146029695717560320, journalId=1260987677001138203, issueId=1321170163563614210, articleNumber=null, orderNo=null, doi=10.13386/j.issn1002-0306.2024120221, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1734364800000, receivedDateStr=2024-12-17, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1792921137097, onlineDateStr=2026-10-25, pubDate=1769875200000, pubDateStr=2026-02-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792921137097, onlineIssueDateStr=2026-10-25, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792921137097, creator=13701087609, updateTime=1792921137097, updator=13701087609, issue=Issue{id=1321170163563614210, tenantId=1146029695717560320, journalId=1260987677001138203, year='2026', volume='47', issue='3', pageStart='1', pageEnd='497', issueExtLink='null', onlineDate='null', pubDate='1769875200000', pubDateStr='2026-02-01', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792921113148, creator='13701087609', updateTime=1792921113148, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=156, endPage=162, ext={EN=ArticleExt(id=1321170264205935319, articleId=1321170264017191638, tenantId=1146029695717560320, journalId=1260987677001138203, language=EN, title=Efficient Recombinant Expression and Characterization of
β-Mannanase from
Aspergillus niger and Its Application in the Hydrolysis of Coffee Grounds, columnId=1261336275769016441, journalTitle=Science and Technology of Food Industry, columnName=Bioengineering, runingTitle=null, highlight=null, articleAbstract=
Coffee grounds, the major by-product generated during the production of instant coffee, are rich in galactomannan. Mannanase can hydrolyze this compound into mannose and manno-oligosaccharides with various functional activities, thereby effectively increasing the added value of coffee grounds. In this study, the β-mannanase gene (AnMan26) from Aspergillus niger was recombinantly expressed in the engineered A. niger strain FBL-B. The enzymatic properties of the enzyme were characterized, and it was then employed to hydrolyze coffee grounds for the production of mannose and manno-oligosaccharides. The results showed that the recombinant A. niger produced mannanase at an expression level of 1830 U/mL after high-density fermentation for 168 h. The optimum pH of the enzyme was 5.0 and the optimum temperature was 45 ℃. The enzyme remained stable within a pH range of 3.0~7.0 and at temperatures below 45 ℃. A combination of AnMan26 and α-galactosidase was used to hydrolyze the microwave-treated coffee grounds. After 8 h of hydrolysis, the hydrolysis rate of galactomannan in the coffee grounds reached 42.3%, with a hydrolysate yield of 20.3% coffee grounds. The main components of the hydrolysate were mannose (44.1%), mannobiose (2.5%), mannotriose (10.9%), and mannohexaose (1.5%). The excellent properties of AnMan26 enable the effective hydrolysis of coffee grounds to produce mannose and manno-oligosaccharides, providing both theoretical and practical basis for the high-value utilization of coffee grounds.
, authors=Qi YAO
1, Danyang SUN
2, Qiaojuan YAN
1, Yanxiao LI
1, 3, *, Zhengqiang JIANG
2, 4, authorsList=Qi YAO, Danyang SUN, Qiaojuan YAN, Yanxiao LI, Zhengqiang JIANG, authorCompany=null, correspAuthors=Yanxiao LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Science and Technology of Food Industry. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1321170265271288544, articleId=1321170264017191638, tenantId=1146029695717560320, journalId=1260987677001138203, language=CN, title=黑曲霉
β-甘露聚糖酶的高效重组表达、表征及在水解咖啡渣中的应用, columnId=1261336277547401341, journalTitle=食品工业科技, columnName=生物工程, runingTitle=null, highlight=null, articleAbstract=
咖啡渣是速溶咖啡生产过程中产生的主要副产物,含有丰富的半乳甘露聚糖,利用甘露聚糖酶能够将其水解为具有多种功能活性的甘露糖和甘露寡糖,有效提高产品附加值。本研究将黑曲霉(Aspergillus niger)来源的β-甘露聚糖酶基因(AnMan26)在黑曲霉工程菌(FBL-B)中进行重组表达,表征了该酶的酶学性质,进而将其用于水解咖啡渣制备甘露糖和甘露寡糖。结果表明:重组黑曲霉经168 h高密度发酵后,甘露聚糖酶产酶水平达1830 U/mL。该酶的最适pH为5.0,最适温度为45 ℃,在pH3.0~7.0和45 ℃以下保持稳定。将AnMan26和α-半乳糖苷酶复配水解微波处理后的咖啡渣,水解8 h后咖啡渣中甘露聚糖的水解率为42.3%,水解产物得率为20.3%,主要成分为甘露糖(44.1%)、甘露二糖(2.5%)、甘露三糖(10.9%)和甘露六糖(1.5%)。该酶具有优良的酶学性质,能够有效水解咖啡渣制备甘露糖和甘露寡糖,为咖啡渣的高值化利用提供了理论和实践基础。
, authors=姚琪
1, 孙丹阳
2, 闫巧娟
1, 李延啸
1, 3, *, 江正强
2, 4, authorsList=姚琪, 孙丹阳, 闫巧娟, 李延啸, 江正强, authorCompany=null, correspAuthors=李延啸, authorNote=
, correspAuthorsNote=
, copyrightStatement=版权所有 © 2026《食品工业科技》编辑部, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=1pMTj+SPZ65ZMvZK1GL+Rg==, magXml=sduPjqrC1Qqu2t5iCP5aWQ==, pdfUrl=null, pdf=fITadOA3blpEZfA6rB5UZQ==, pdfFileSize=2041534, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=49zhWdAJNXHCrRKGZrOagQ==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=VtdllvEEfSFsBlBHoWzQAA==, mapNumber=null, fund=null)}, authors=[Author(id=1321170267460715246, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=S20233071534@cau.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1321170267552989936, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170267460715246, language=EN, stringName=Qi YAO, firstName=Qi, middleName=null, lastName=YAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1College of Engineering, China Agricultural University, Beijing 100083, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1321170267645264625, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170267460715246, language=CN, stringName=姚琪, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1中国农业大学工学院,北京 100083, bio={"content":"
姚琪(2001−),女,硕士研究生,研究方向:农产品生物加工,E-mail:S20233071534@cau.edu.cn
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姚琪(2001−),女,硕士研究生,研究方向:农产品生物加工,E-mail:S20233071534@cau.edu.cn
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2Key Laboratory of China National Light Industry and Food Bioengineering, College of Food Science and Nutrition Engineering, China Agricultural University, Beijing 100083, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1321170268077277942, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170267716567795, language=CN, stringName=孙丹阳, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2中国农业大学食品科学与营养工程学院,中国轻工业食品生物工程重点实验室,北京 100083, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1321170265543918308, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, xref=2, ext=[AuthorCompanyExt(id=1321170265548112613, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, companyId=1321170265543918308, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Key Laboratory of China National Light Industry and Food Bioengineering, College of Food Science and Nutrition Engineering, China Agricultural University, Beijing 100083, China), AuthorCompanyExt(id=1321170265556501222, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, companyId=1321170265543918308, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2中国农业大学食品科学与营养工程学院,中国轻工业食品生物工程重点实验室,北京 100083)])]), Author(id=1321170268169552632, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1321170268295381754, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170268169552632, language=EN, stringName=Qiaojuan YAN, firstName=Qiaojuan, middleName=null, lastName=YAN, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1College of Engineering, China Agricultural University, Beijing 100083, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1321170268442182395, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170268169552632, language=CN, stringName=闫巧娟, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1中国农业大学工学院,北京 100083, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1321170265455837921, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, xref=1, ext=[AuthorCompanyExt(id=1321170265464226530, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, companyId=1321170265455837921, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1中国农业大学工学院,北京 100083)])]), Author(id=1321170268731589373, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=liyanxiao2012@cau.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1321170268832252673, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170268731589373, language=EN, stringName=Yanxiao LI, firstName=Yanxiao, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 3, *, address=
1College of Engineering, China Agricultural University, Beijing 100083, China
3College of Food Science and Engineering/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing University of Finance and Economics, Nanjing 210023, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1321170268899361539, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, authorId=1321170268731589373, language=CN, stringName=李延啸, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 3, *, address=
1中国农业大学工学院,北京 100083
3南京财经大学食品科学与工程学院/江苏省现代粮食流通与安全协同创新中心,江苏南京 210023, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1321170265455837921, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, xref=1, ext=[AuthorCompanyExt(id=1321170265464226530, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, companyId=1321170265455837921, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2, 4, address=
2Key Laboratory of China National Light Industry and Food Bioengineering, College of Food Science and Nutrition Engineering, China Agricultural University, Beijing 100083, China
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2, 4, address=
2中国农业大学食品科学与营养工程学院,中国轻工业食品生物工程重点实验室,北京 100083
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2中国农业大学食品科学与营养工程学院,中国轻工业食品生物工程重点实验室,北京 100083)]), AuthorCompany(id=1321170267297137386, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, xref=4, ext=[AuthorCompanyExt(id=1321170267313914603, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, companyId=1321170267297137386, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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High density fermentation of β-mannanase (AnMan26) (a) and SDS-PAGE analysis (b), figureFileSmall=cONPegkfdST92iYJyDlbOQ==, figureFileBig=49zhWdAJNXHCrRKGZrOagQ==, tableContent=null), ArticleFig(id=1321170272292553494, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, language=CN, label=图1, caption=
β-甘露聚糖酶(AnMan26)高密度发酵历程(a)及SDS-PAGE分析(b)注:M:低相对分子质量标准蛋白质;泳道1~8分别为0、24、48、72、96、120、144、168 h的发酵上清液。
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SDS-PAGE analysis of the purification of β-mannanase (AnMan26), figureFileSmall=k9AvtmHym8l7n2GYY2IK+w==, figureFileBig=6GzIxxueyGZPDwnTM0fU3Q==, tableContent=null), ArticleFig(id=1321170272674235160, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, language=CN, label=图2, caption=
β-甘露聚糖酶(AnMan26)的纯化电泳图注:M:低相对分子质量标准蛋白质;泳道1:粗酶液;泳道2:纯酶液;泳道3:AnMan26去糖基化。
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AnMan26 optimum pH (a) and pH stability (b), optimal temperature (c) and temperature stability (d), figureFileSmall=H5aA1BCxQ2R3zkXnluhdLg==, figureFileBig=KVH3IkCDflSroPGjAkFwyQ==, tableContent=null), ArticleFig(id=1321170272900727578, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, language=CN, label=图3, caption=
AnMan26的最适pH(a)及pH稳定性(b)、最适温度(c)及温度稳定性(d), figureFileSmall=H5aA1BCxQ2R3zkXnluhdLg==, figureFileBig=KVH3IkCDflSroPGjAkFwyQ==, tableContent=null), ArticleFig(id=1321170272976225051, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, language=EN, label=Fig.4, caption=
Effect of treatment power and time on hydrolysate yield, figureFileSmall=2SnW7OB7pnOirmDceczA+w==, figureFileBig=tF5IZR/oZy1Dl8i14t66yg==, tableContent=null), ArticleFig(id=1321170273043333916, tenantId=1146029695717560320, journalId=1260987677001138203, articleId=1321170264017191638, language=CN, label=图4, caption=
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Purification of β-mannanase (AnMan26)
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| 纯化步骤 | 总酶活力(U) | 总蛋白含量(mg) | 比酶活力(U/mg) | 纯化倍数 | 回收率(%) |
|---|
| 粗酶液 | 21325.0±873.0 | 132.1±1.6 | 161.4±9.4 | 1.0 | 100.0 |
| Q-Sepharose阴离子交换层析(纯酶) | 6948.0±159.8 | 31.8±1.8 | 218.5±23.8 | 1.4 | 32.6 |
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β-甘露聚糖酶(AnMan26)的纯化
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| 纯化步骤 | 总酶活力(U) | 总蛋白含量(mg) | 比酶活力(U/mg) | 纯化倍数 | 回收率(%) |
|---|
| 粗酶液 | 21325.0±873.0 | 132.1±1.6 | 161.4±9.4 | 1.0 | 100.0 |
| Q-Sepharose阴离子交换层析(纯酶) | 6948.0±159.8 | 31.8±1.8 | 218.5±23.8 | 1.4 | 32.6 |
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Content of mannose and manno-oligosaccharides (DP≤6) in the hydrolysate of coffee grounds
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| 水解时间(h) | 含量(%) |
|---|
| M1 | M2 | M3 | M4 | M6 |
|---|
| 0.5 | 17.2±0.1 | 3.6±0.1 | 7.6±0.0 | 2.4±0.1 | 0.9±0.1 |
| 1 | 30.8±0.0 | 3.6±0.0 | 9.3±0.0 | 3.0±0.0 | 1.5±0.1 |
| 2 | 41.4±0.1 | 2.4±0.1 | 10.4±0.0 | 1.7±0.1 | 2.0±0.1 |
| 4 | 42.5±0.0 | 2.8±0.1 | 10.9±0.1 | 1.7±0.0 | 1.9±0.0 |
| 8 | 44.1±0.0 | 2.5±0.0 | 10.9±0.0 | 0.5±0.1 | 1.5±0.0 |
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甘露糖和甘露寡糖(DP≤6)各组分在咖啡渣水解物中含量
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| 水解时间(h) | 含量(%) |
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| M1 | M2 | M3 | M4 | M6 |
|---|
| 0.5 | 17.2±0.1 | 3.6±0.1 | 7.6±0.0 | 2.4±0.1 | 0.9±0.1 |
| 1 | 30.8±0.0 | 3.6±0.0 | 9.3±0.0 | 3.0±0.0 | 1.5±0.1 |
| 2 | 41.4±0.1 | 2.4±0.1 | 10.4±0.0 | 1.7±0.1 | 2.0±0.1 |
| 4 | 42.5±0.0 | 2.8±0.1 | 10.9±0.1 | 1.7±0.0 | 1.9±0.0 |
| 8 | 44.1±0.0 | 2.5±0.0 | 10.9±0.0 | 0.5±0.1 | 1.5±0.0 |
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