{"id":4684,"date":"2022-06-08T20:59:30","date_gmt":"2022-06-08T12:59:30","guid":{"rendered":"http:\/\/woodrefinery.com\/zhenfang\/?p=4684"},"modified":"2023-03-06T12:58:54","modified_gmt":"2023-03-06T04:58:54","slug":"%e5%a2%9e%e5%bc%ba%e4%ba%8c%e5%85%83%e9%86%87%e9%86%9a%e5%8c%96%e6%9c%a8%e8%b4%a8%e7%b4%a0enhancing-a-etherification-of-lignin-in-eucalyptus-diol-pretreatment-to-improve-lignin-monomer-production","status":"publish","type":"post","link":"https:\/\/woodrefinery.com\/zhenfang\/%e5%a2%9e%e5%bc%ba%e4%ba%8c%e5%85%83%e9%86%87%e9%86%9a%e5%8c%96%e6%9c%a8%e8%b4%a8%e7%b4%a0enhancing-a-etherification-of-lignin-in-eucalyptus-diol-pretreatment-to-improve-lignin-monomer-production\/","title":{"rendered":"<strong>\u589e\u5f3a\u4e8c\u5143\u9187\u919a\u5316\u6728\u8d28\u7d20Enhancing <\/strong>\u03b1<strong>-etherification of lignin in Eucalyptus diol pretreatment to improve lignin monomer production<\/strong>"},"content":{"rendered":"<p style=\"text-align: center;\"><strong>Enhancing <\/strong>\u03b1<strong>-etherification of lignin in Eucalyptus diol pretreatment to improve lignin monomer production<\/strong><\/p>\n<p style=\"text-align: justify;\">Recently, Dr. Chengyu Dong and Prof. <strong>Zhen Fang<\/strong>, collaborated with Prof. G Cravotto at University of Turin (Italy) and Dr. S-Y Leu at Hong Kong Polytechnic University published a paper about enhancing \u03b1-etherification of lignin in Eucalyptus diol pretreatment.<\/p>\n<p style=\"text-align: justify;\">In this work, \u03b1-etherification of lignin in diol pretreatment was selectively enhanced at mild temperature for lignin isolation and subsequent valorisation. More than 90% of lignin was removed from Eucalyptus at 120 \u00b0C in diol (ethylene glycol and 1,4-butanediol) pretreatment, resulting in &gt;90% cellulose conversion in 24 h at 7.5 FPU\/g glucan cellulase loading. Subsequent catalytic transfer hydrogenolysis of the isolated lignins with Ru\/C in ethanol gave 15% monomer yield on native lignin basis, 5 times of that from the technical ethanol process (170 \u00b0C). HSQC NMR analysis revealed that diol pretreated lignin (120 \u00b0C) contained ~23% \u03b1-etherified \u03b2-O-4 interunit bonds, indicating that lignin degradation (<em>i.e.<\/em> cleavage of \u03b2-O-4 bonds) was suppressed <em>via<\/em> etherification by grafting a hydroxyl group at the \u03b1 position of lignin. This finding was consistent with the isolated lignin (120 \u00b0C) had less number of phenolic OH and higher molecular weight <em>via<\/em> <sup>31<\/sup>P NMR and GPC analysis. <sup>31<\/sup>P NMR analysis also revealed that diol isolated lignin contained more numbers of aliphatic OH than ethanol-isolated lignin, which increased lignin solubility and maintained the high yield (&gt;80%) of isolated lignin from Eucalyptus at 120 \u00b0C as expected. In summary, diol pretreatment of woody biomass can effectively isolate more lignin for hydrogenolysis to valued-added monomers without compromising the isolated yield of lignin and hydrolysis yield of remained cellulose.<\/p>\n<p>Related results were published in Industry crops and products:<\/p>\n<p>CY Dong, XZ Meng, S-Y Leu, LJ Xu, ZL Wu, G Cravotto, <strong>Zhen Fang*, <\/strong>Enhancing a-Etherification of Lignin in Eucalyptus Diol Pretreatment to Improve Lignin Monomer Production, <u>Industrial Crops and Products<\/u>, 185, 115130, <a href=\"https:\/\/doi.org\/10.1016\/j.indcrop.2022.115130\">https:\/\/doi.org\/10.1016\/j.indcrop.2022.115130<\/a> (<strong>2022<\/strong>).<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-4988\" src=\"https:\/\/woodrefinery.com\/zhenfang\/wp-content\/uploads\/2022\/06\/dong-crop.png\" alt=\"\" width=\"1269\" height=\"496\" srcset=\"https:\/\/woodrefinery.com\/zhenfang\/wp-content\/uploads\/2022\/06\/dong-crop.png 1269w, https:\/\/woodrefinery.com\/zhenfang\/wp-content\/uploads\/2022\/06\/dong-crop-300x117.png 300w, https:\/\/woodrefinery.com\/zhenfang\/wp-content\/uploads\/2022\/06\/dong-crop-1024x400.png 1024w, https:\/\/woodrefinery.com\/zhenfang\/wp-content\/uploads\/2022\/06\/dong-crop-768x300.png 768w\" sizes=\"(max-width: 1269px) 100vw, 1269px\" \/><\/p>\n<p style=\"text-align: center;\">Enhancing \u03b1-etherification of lignin by diol pretreatment at mild temperature (120 \u00b0C) to isolate lignin for producing 5 times monomer yield of that from technical ethanol pretreatment (170 \u00b0C) by hydrogenolysis. (\u5728\u4e8c\u5143\u9187\u9884\u5904\u7406\u8fc7\u7a0b\u4e2d\uff0c\u6728\u8d28\u7d20\u7684\u03b1-\u919a\u5316\u5728\u6e29\u548c\u6e29\u5ea6(120 \u2103)\u4e0b\u589e\u5f3a\uff0c\u5176\u5206\u79bb\u6728\u8d28\u7d20\u6c22\u89e3\u5355\u4f53\u6536\u7387\u8fbe\u5230\u5de5\u4e1a\u4e59\u9187\u9884\u5904\u7406(170 \u2103)\u5355\u4f53\u6536\u7387\u76845\u500d)<\/p>\n<hr \/>\n<p style=\"text-align: center;\"><strong>\u8463\u6f84\u5b87\u535a\u58eb\u5728\u56fd\u9645\u5b66\u672f\u671f\u520a<\/strong><strong>Industry crops and products<\/strong><strong>\u53d1\u8868\u5b66\u672f\u8bba\u6587<\/strong><\/p>\n<p style=\"text-align: justify;\">\u6700\u8fd1\uff0c\u519c\u4e1a\u5de5\u7a0b\u671f\u520aIndustry crops and products (\u7b2c\u4e00\u7f72\u540d\u5355\u4f4d\u4e3a\u5357\u4eac\u519c\u4e1a\u5927\u5b66\uff0c\u7b2c\u4e00\u4f5c\u8005\u4e3a\u8463\u6f84\u5b87\u535a\u58eb\uff0c\u901a\u8baf\u4f5c\u8005\u4e3a<strong>\u65b9\u771f<\/strong>\u6559\u6388, \u5408\u4f5c\u5355\u4f4d\u610f\u5927\u5229\u90fd\u7075\u5927\u5b66G Cravotto\u6559\u6388\u548c\u9999\u6e2f\u7406\u5de5\u5927\u5b66S-Y Leu \u535a\u58eb)\u53d1\u8868\u4e86\u4e00\u7bc7\u5173\u4e8e\u63d0\u9ad8\u6849\u6811\u4e8c\u9187\u9884\u5904\u7406\u8fc7\u7a0b\u4e2d\u6728\u8d28\u7d20\u03b1-\u919a\u5316\u7684\u6587\u7ae0\u3002<\/p>\n<p style=\"text-align: justify;\">\u5728\u8be5\u7814\u7a76\u4e2d\uff0c\u4e8c\u5143\u9187\u9884\u5904\u7406\u4e2d\u6728\u8d28\u7d20a-\u919a\u5316\u5728\u6e29\u548c\u7684\u6e29\u5ea6\u4e0b\u88ab\u9009\u62e9\u6027\u5730\u589e\u5f3a\uff0c\u53ef\u9ad8\u6548\u5206\u79bb\u6728\u8d28\u7d20\u5e76\u5229\u4e8e\u6728\u8d28\u7d20\u7684\u9ad8\u503c\u5316\u5229\u7528\u3002\u5728120 \u2103\uff0c\u4e8c\u5143\u9187\uff08\u4e59\u4e8c\u9187\u548c1,4-\u9884\u5904\u7406\u7684\u6849\u6811\u6728\u8d28\u7d20\u53bb\u9664\u7387\u8fbe\u523090%\u4ee5\u4e0a\uff0c\u7ea4\u7ef4\u7d20\u572824\u5c0f\u65f6\u5185\u8f6c\u5316\u7387\u5373\u4e3a90%\u3002\u968f\u540e\u5728\u4e59\u9187\u4e2d\u7528\u948c\/\u78b3\u50ac\u5316\u6c22\u89e3\u6728\u8d28\u7d20\uff0c\u5355\u4f53\u4ea7\u7387\u4e3a15%\uff0c\u662f\u5de5\u4e1a\u4e59\u9187\u9884\u5904\u7406(170 \u2103)\u76845\u500d\u3002\u4e8c\u7ef4\u6838\u78c1\u5171\u632f\u5206\u6790\u8868\u660e\uff0c\u4e8c\u5143\u9187\u9884\u5904\u7406\u6728\u8d28\u7d20\uff08120 \u00b0C\uff09 \u5305\u542b23%\u03b1-\u919a\u5316\u03b2-O-4\u5316\u5b66\u952e\uff0c\u8868\u660e\u6728\u8d28\u7d20\u964d\u89e3\uff08\u5373\u03b2-O-4\u952e\u7684\u65ad\u88c2\uff09\u88ab\u5728\u6728\u8d28\u7d20\u03b1-\u919a\u5316\u6291\u5236\u3002\u8fd9\u4e2a\u7ed3\u679c\u4e0e\u6728\u8d28\u7d20\u7684\u6838\u78c1\u78f7\u8c31\u5206\u6790\u548c\u51dd\u80f6\u8272\u8c31\u7ed3\u679c\u5206\u6790\u6291\u5236\uff0c\u8be5\u6761\u4ef6\u4e0b\u5206\u79bb\u7684\u6728\u8d28\u7d20\u915a\u7f9f\u57fa\u542b\u91cf\u5c11\uff0c\u5206\u5b50\u91cf\u9ad8\u3002\u6838\u78c1\u78f7\u8c31\u5206\u6790\u8fd8\u8868\u660e\uff0c\u4e8c\u5143\u9187\u5206\u79bb\u7684\u6728\u8d28\u7d20\u6bd4\u4e59\u9187\u5206\u79bb\u7684\u6728\u8d28\u7d20\u542b\u6709\u66f4\u591a\u7684\u8102\u80aa\u65cf\u7f9f\u57fa\uff0c\u8fd9\u589e\u52a0\u4e86\u6728\u8d28\u7d20\u7684\u6eb6\u89e3\u5ea6\u5e76\u4fdd\u6301\u4e86\u8f83\u9ad8\u7684\u5206\u79bb\u6548\u7387(120 \u2103\u65f6\uff0c\u6849\u6811\u6728\u8d28\u7d20\u7684\u5206\u79bb\u7387\u4e3a80%)\u3002\u7efc\u4e0a\u6240\u8ff0\uff0c\u6728\u8d28\u751f\u7269\u8d28\u7684\u4e8c\u9187\u9884\u5904\u7406\u53ef\u4ee5\u6709\u6548\u5730\u5206\u79bb\u51fa\u66f4\u591a\u7684\u6728\u8d28\u7d20\u6c22\u89e3\u4e3a\u9ad8\u9644\u52a0\u503c\u7684\u5355\u4f53\uff0c\u800c\u4e0d\u5f71\u54cd\u6728\u8d28\u7d20\u7684\u5206\u79bb\u6548\u7387\u548c\u7ea4\u7ef4\u7d20\u7684\u6c34\u89e3\u6548\u7387\u3002<\/p>\n<p>\u7ed3\u679c\u53d1\u8868\u5728Industry crops and products\uff1a<\/p>\n<p>CY Dong, XZ Meng, S-Y Leu, LJ Xu, ZL Wu, G Cravotto, <strong>Zhen Fang*, <\/strong>Enhancing a-Etherification of Lignin in Eucalyptus Diol Pretreatment to Improve Lignin Monomer Production, <u>Industrial Crops and Products<\/u>, 185, 115130, <a href=\"https:\/\/doi.org\/10.1016\/j.indcrop.2022.115130\">https:\/\/doi.org\/10.1016\/j.indcrop.2022.115130<\/a> (<strong>2022<\/strong>).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Enhancing \u03b1-etherification of lignin in Eucalyptus diol [&hellip;]<\/p>\n","protected":false},"author":2,"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\/4684"}],"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\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/comments?post=4684"}],"version-history":[{"count":5,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/4684\/revisions"}],"predecessor-version":[{"id":4991,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/posts\/4684\/revisions\/4991"}],"wp:attachment":[{"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/media?parent=4684"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/categories?post=4684"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/woodrefinery.com\/zhenfang\/wp-json\/wp\/v2\/tags?post=4684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}