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Streptomyces thermocerradoensisStreptomyces thermocerradoensis I3 secretes a novel bifunctional xylanase/endoglucanase under solid‐state fermentation

机译:Streptomyces Thermocerradoensis Streptomyces Thermocerradoensis I3在固态发酵下分泌新的双官能木聚糖酶/内葡聚糖酶

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Abstract > Lignocellulosic wastes can be potentially converted into several bioproducts such as glucose, xylo‐oligosaccharides, and bioethanol. Certain processes, such as enzymatic hydrolysis, are generally needed to convert biomass into bioproducts. The present study investigated the production of xylanases and cellulases by Streptomyces thermocerradoensis I3 under solid‐state fermentation (SSF), using wheat bran as a low‐cost medium. The activities of xylanase and carboxymethyl cellulase (CMCase) were evaluated until 96?hr of incubation. The highest enzyme activity was observed after 72?hr of incubation. The crude enzyme extract was sequentially filtered, first using a 50?kDa filter, followed by a 30?kDa filter. Fraction 3 (F3) exhibited activities of both xylanase and CMCase. Xylanase and CMCase showed optimum activity at 70°C and pH 6.0 and 55°C and pH 6.0, respectively. The zymogram analysis showed a single activity band with a molecular mass of approximately 17?kDa. These findings provide strong evidence that the enzyme is a bifunctional xylanase/endoglucanase. This enzyme improved the saccharification of sugarcane bagasse by 1.76 times that of commercial cellulase. This enzyme has potential applications in various biotechnological procedures. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译:</span><Abstract Type =“Main”XML:Lang =“en”> <标题类型=“main”>抽象</ title> > 可以将木质纤维素废物潜在地转化为几种生物制作,例如葡萄糖,木龙 - 寡糖和生物乙醇。通常需要某些方法,例如酶水解,以将生物质转化为生物制作。本研究研究了木聚糖酶和纤维素酶的产生 链霉菌热radoensis </ i> I3在固态发酵(SSF)下,使用小麦麸载作为低成本介质。评价木聚糖酶和羧甲基纤维素酶(CMCase)的活性,直至96℃孵育。在72℃孵育后观察到最高的酶活性。依次过滤粗酶提取物,首先使用50ΩkDa过滤器,然后用30?KDA过滤器。级分3(F3)表现出木聚糖酶和CMCase的活性。木聚糖酶和CMCase分别在70℃和pH6.0和55℃和pH 6.0时显示出最佳活性。 ZyMogram分析显示单个活动带,其分子量约为17ΩkDa。这些发现提供了强有力的证据表明酶是双官能的木聚糖酶/内葡聚糖酶。这种酶改善了商业纤维素酶的甘蔗囊糖的糖化。该酶具有各种生物技术手术的潜在应用。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-15005/'>《Biotechnology Progress》</a> <b style="margin: 0 2px;">|</b><span>2020年第2期</span><b style="margin: 0 2px;">|</b><span>共8页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Gama Aline Rodrigues&option=202" target="_blank" rel="nofollow">Gama Aline Rodrigues;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Brito‐Cunha Carolina Candida Q.&option=202" target="_blank" rel="nofollow">Brito‐Cunha Carolina Candida Q.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Campos Ivan T. N.&option=202" target="_blank" rel="nofollow">Campos Ivan T. N.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Souza Guilherme Rocha L.&option=202" target="_blank" rel="nofollow">Souza Guilherme Rocha L.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Carneiro Lilian Carla&option=202" target="_blank" rel="nofollow">Carneiro Lilian Carla;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Bataus Luiz Artur Mendes&option=202" target="_blank" rel="nofollow">Bataus Luiz Artur Mendes;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Departament of Biochemistry and Molecular BiologyFederal University of GoiásGoiania Brazil;</p> <p>Departament of Biochemistry and Molecular BiologyFederal University of GoiásGoiania Brazil;</p> <p>Departament of Biochemistry and Molecular BiologyFederal University of GoiásGoiania Brazil;</p> <p>Departament of Biochemistry and Molecular BiologyFederal University of GoiásGoiania Brazil;</p> <p>Institute of Tropical Pathology and Public HealthFederal University of GoiásGoiania Brazil;</p> <p>Departament of Biochemistry and Molecular BiologyFederal University of GoiásGoiania Brazil;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/15.html" title="生物科学">生物科学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=lignocellulosic wastes&option=203" rel="nofollow">lignocellulosic wastes;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=saccharification&option=203" rel="nofollow">saccharification;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sugarcane bagasse&option=203" rel="nofollow">sugarcane bagasse;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=wheat bran&option=203" rel="nofollow">wheat bran;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=xylo‐oligosaccharides&option=203" rel="nofollow">xylo‐oligosaccharides;</a> </p> <div class="translation"> 机译:木质纤维素粪便;糖化;甘蔗棒;小麦麸皮;Xylo-Oligosaccharides; 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Shengnan Shi1</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yazhou Tao1&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,Yazhou Tao1</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wenxi Liu1&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,Wenxi Liu1</a> <span> <a href="/journal-cn-55888/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 应用微生物学进展 </a> </span> <span> . 2018</span><span>,第001期</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06130411566548.html">Bifunctional endoglucase having endoglucanase and xylanase activities method of degrading xylan containing material and method of producing a product using the bifunctional endoglucase</a> <b>[P]</b> . <span> 外国专利: <!-- 韩国专利: --> KR101572445B1 </span> <span> . 2015-11-27</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译:具有内切葡聚糖酶和木聚糖酶活性的双功能内切酶降解含有木聚糖的材料的方法和使用该双功能内切酶生产产品的方法 </span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06130414263513.html">BIFUNCTIONAL ENDOGLUCASE HAVING ENDOGLUCANASE AND XYLANASE ACTIVITIES, METHOD OF DEGRADING XYLAN CONTAINING MATERIAL AND METHOD OF PRODUCING A PRODUCT USING THE BIFUNCTIONAL ENDOGLUCASE</a> <b>[P]</b> . <span> 外国专利: <!-- 韩国专利: --> KR20150010008A </span> <span> . 2015-01-28</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译:具有内切葡聚糖酶和木聚糖酶活性的功能性内切葡聚糖酶,降解含木聚糖的材料的方法以及使用该内切葡聚糖酶生产产品的方法 </span> </p> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130455382464.html">Streptomyces sp. NOVEL PROCESS FOR THE ISOLATION OF CLAVULANIC ACID AND OF PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF FROM THE FERMENTATION BROTH OF STREPTOMYCES SP. 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