{"id":5408,"date":"2025-05-02T17:13:26","date_gmt":"2025-05-02T09:13:26","guid":{"rendered":"https:\/\/woodrefinery.com\/zhenfang\/?p=5408"},"modified":"2025-05-02T17:13:26","modified_gmt":"2025-05-02T09:13:26","slug":"%e7%a7%b8%e7%a7%86%e5%8f%91%e9%85%b5%e4%b9%99%e9%86%87enhancing-xylose-fermentation-to-maximize-net-energy-gain-of-lime-pretreated-wheat-straw-by-delayed-fed-batch-simultaneous-saccharification-and-fe","status":"publish","type":"post","link":"https:\/\/woodrefinery.com\/zhenfang\/%e7%a7%b8%e7%a7%86%e5%8f%91%e9%85%b5%e4%b9%99%e9%86%87enhancing-xylose-fermentation-to-maximize-net-energy-gain-of-lime-pretreated-wheat-straw-by-delayed-fed-batch-simultaneous-saccharification-and-fe\/","title":{"rendered":"\u79f8\u79c6\u53d1\u9175\u4e59\u9187Enhancing xylose fermentation to maximize net energy gain of lime-pretreated wheat straw by delayed fed-batch simultaneous saccharification and fermentation"},"content":{"rendered":"

Enhancing xylose fermentation to maximize net energy gain of lime-pretreated wheat straw by delayed fed-batch simultaneous saccharification and fermentation<\/strong><\/p>\n

Recently, master student Miss Wan-ying Qiu supervised by Dr. DC Dong and Prof. Zhen Fang<\/strong> published a research article in Biomass and Bioenergy (Q2, IF 5.8) about increasing net energy gain through delayed fed-batch simultaneous saccharification and fermentation of wheat straw.<\/p>\n

Delayed fed-batch simultaneous saccharification and fermentation (SSF) of lime-pretreated wheat straw was carried out with a wild type yeast (i.e., Candida shehatae<\/em>) to produce high titer ethanol. Calcium ions in lime-pretreated wheat straw were precipitated by\u00a0pH<\/em>\u00a0controlling agent (i.e.,<\/em>\u00a0sulfuric acid) to reduce inhibition of inorganic ions on yeast fermentation. It was found that ethanol concentration (\u223c35\u00a0g\/L) did not increase as solid loading of substrate increased from 15\u00a0% to 20\u00a0% in batch SSF. However, in delayed fed-batch SSF, the feeding time of substrate (96\u00a0h) was postponed until after the inoculation time (18\u00a0h) resulting in a 74% reduction in residual xylose concentration and a 54.3% increase in ethanol concentration (54\u00a0g\/L). Compared to batch SSF, separation energy of ethanol was decreased by 32.3% to 977.3 MJ\/ton wheat straw in delayed fed-batch SSF, and net energy gain was increased by 20.1% to 3525.7 MJ\/ton wheat straw.<\/p>\n

Related results were published in Biomass and Bioenergy:<\/p>\n

WY Qiu, CY Dong*, JJ Guo, B Xia, LJ Xu, Zhen Fang*<\/strong>. Enhancing xylose fermentation to maximize net energy gain of lime-pretreated wheat straw by delayed fed-batch simultaneous saccharification and fermentation, Biomass and Bioenergy (IF 5.8), 198 (2025<\/strong>), 107865. https:\/\/doi.org\/10.1016\/j.biombioe.2025.107865<\/a><\/p>\n

\"\"<\/p>\n

Ethanol concentration was increased by 54.3% by xylose fermentation in delayed fed-batch SSF. <\/strong>\uff08\u91c7\u7528\u5ef6\u8fdf\u8865\u6599\u5f0f\u540c\u6b65\u7cd6\u5316\u53d1\u9175\uff0c\u53d1\u9175\u6728\u7cd6\u4f7f\u4e59\u9187\u6d53\u5ea6\u63d0\u9ad8\u4e86<\/strong>54.3%<\/strong>\uff09<\/strong><\/p>\n

\u00a0—————————————————————<\/strong><\/p>\n

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\u5229\u7528\u4f11\u54c8\u5854\u5047\u4e1d\u9175\u6bcd\uff08Candida shehatae<\/em>\uff09\u5bf9\u6c22\u6c27\u5316\u9499\u9884\u5904\u7406\u5c0f\u9ea6\u79f8\u79c6\u8fdb\u884c\u5ef6\u8fdf\u8865\u6599\u5f0f\u540c\u6b65\u7cd6\u5316\u53d1\u9175\uff0c\u4ee5\u751f\u4ea7\u9ad8\u6d53\u5ea6\u4e59\u9187\u3002\u4f7f\u7528\u786b\u9178\u4f5c\u4e3apH<\/em>\u8c03\u8282\u5242\u6c89\u6dc0\u6c22\u6c27\u5316\u9499\u9884\u5904\u7406\u5c0f\u9ea6\u79f8\u79c6\u4e2d\u7684\u9499\u79bb\u5b50\uff0c\u51cf\u5c11\u65e0\u673a\u79bb\u5b50\u5bf9\u9175\u6bcd\u53d1\u9175\u7684\u6291\u5236\u4f5c\u7528\u3002\u5728\u5206\u6279\u8865\u6599\u5f0f\u540c\u6b65\u7cd6\u5316\u53d1\u9175\u4e2d\uff0c\u5e95\u7269\u56fa\u8f7d\u91cf\u4ece15%\u63d0\u9ad8\u81f320%\u65f6\uff0c\u4e59\u9187\u6d53\u5ea6\u5747\u7ea6\u4e3a35 g\/L\uff0c\u5e76\u672a\u663e\u8457\u589e\u52a0\u3002\u7136\u800c\uff0c\u5728\u5ef6\u8fdf\u8865\u6599\u5f0f\u540c\u6b65\u7cd6\u5316\u53d1\u9175\u4e2d\uff0c\u8865\u6599\u65f6\u95f4\uff0896 h\uff09\u63a8\u8fdf\u81f3\u63a5\u79cd\u65f6\u95f4\uff0818 h\uff09\u4e4b\u540e\uff0c\u4f7f\u6728\u7cd6\u6b8b\u7559\u6d53\u5ea6\u964d\u4f4e74%\uff0c\u4e59\u9187\u6d53\u5ea6\u589e\u52a054.3%\uff08\u8fbe\u523054 g\/L\uff09\u3002\u4e0e\u5206\u6279\u8865\u6599\u5f0f\u540c\u6b65\u7cd6\u5316\u53d1\u9175\u76f8\u6bd4\uff0c\u5ef6\u8fdf\u8865\u6599\u5f0f\u540c\u6b65\u7cd6\u5316\u53d1\u9175\u4e2d\u4e59\u9187\u7684\u84b8\u998f\u8017\u80fd\u4e3a977.3 MJ\uff0c\u964d\u4f4e32.3%\uff0c\u4e14\u6bcf\u5428\u5c0f\u9ea6\u79f8\u79c6\u7684\u51c0\u80fd\u91cf\u6536\u76ca\u8fbe\u52303525.7 MJ\uff0c\u589e\u52a020.1%\u3002<\/p>\n

\u7ed3\u679c\u53d1\u8868\u5728Biomass and Bioenergy\uff1a<\/p>\n

WY Qiu, CY Dong*, JJ Guo, B Xia, LJ Xu, Zhen Fang*<\/strong>. Enhancing xylose fermentation to maximize net energy gain of lime-pretreated wheat straw by delayed fed-batch simultaneous saccharification and fermentation, Biomass and Bioenergy (IF 5.8), 198 (2025<\/strong>), 107865. https:\/\/doi.org\/10.1016\/j.biombioe.2025.107865<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Enhancing xylose fermentation to maximize net energy ga […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/5408"}],"collection":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/comments?post=5408"}],"version-history":[{"count":1,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/5408\/revisions"}],"predecessor-version":[{"id":5410,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/5408\/revisions\/5410"}],"wp:attachment":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/media?parent=5408"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/categories?post=5408"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/tags?post=5408"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}