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公开(公告)号：US20210002334A1
公开(公告)日：2021-01-07
申请号：US17026814
申请日：2020-09-21
发明人： Ju Young LEE , In Seung JANG , Seohyun KIM , Sun-Chang KIM , Suk Chea JUNG , Jong Geon JEGAL
IPC分类号： C07K14/395 , C12P19/56 , C12P33/20 , C12N15/81
摘要： Provided are a recombinant yeast having improved ability to produce ginsenoside, which is prepared by overexpressing INO2 and INO4 or deleting OPT1 in a yeast having ability to produce ginsenoside, a method of preparing the yeast, and a method of producing ginsenoside by using the yeast.
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公开(公告)号：US20200216660A1
公开(公告)日：2020-07-09
申请号：US16625260
申请日：2018-06-20
发明人： Dong Yeop OH , Jong Geon JEGAL , Sung Yeon HWANG , Je Young PARK , Tae Ho KIM , Hyeon Yeol JEON
摘要： A polybutylene succinate (PBS) nanocomposite material includes a matrix comprising polybutylene succinate chains, and nanocelluloses dispersed between the polybutylene succinate chains. The PBS composite material may be produced by polymerizing 1,4-butanediol and succinic acid or a derivative thereof in a mixture of 1,4-butanediol and succinic acid or a derivative thereof with nanocelluloses. The PBS nanocomposite material and the method have improved properties, which does not require a surface hydrophobization pretreatment process of cellulose, melt kneading, and solution mixing processes.
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3.发明申请公开(公告)号：US20190032094A1
公开(公告)日：2019-01-31
申请号：US16150760
申请日：2018-10-03
发明人： Ju Hyun YU , Chan Duck JUNG , In Yong EOM , Seung Hwan LEE , Kyung Sik HONG , In Chul KIM , Jong Geon JEGAL , Bong Keun SONG
IPC分类号： C12P7/14 , C12P19/56 , C12P7/06 , C07H1/06 , C12P19/14 , C13K1/02 , C12P7/56 , C12P7/10 , C07H3/02 , C12P19/02
摘要： The present invention relates to a method for preparing bioethanol from lignocellulosic biomass. The method of the present invention is capable of: minimizing the impurity content of an enzymatic saccharification raw material, by extracting biomass using hot water, before pretreatment, and removing extractable substances such as inorganic salts; suppressing, to the greatest extent, the production of overdecomposition products of sugar, by pretreating the biomass, from which the hot water extractable substances have been removed, in a condition for maximizing xylan yield; preparing fermentable sugar at a low cost, without washing a pretreated solid obtained from subsequent solid-liquid separation, but by only concentrating a sugar solution obtained after enzymatic saccharification, using a separation film; and preparing bioethanol therefrom in high yield.
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公开(公告)号：US20180319852A1
公开(公告)日：2018-11-08
申请号：US15880838
申请日：2018-01-26
发明人： Ju Young LEE , In Seung JANG , Seohyun KIM , Sun-Chang KIM , Suk Chea JUNG , Jong Geon JEGAL
IPC分类号： C07K14/395 , C12P33/20 , C12P19/56
CPC分类号： C07K14/395 , C12N15/81 , C12N2501/60 , C12P19/56 , C12P33/20
摘要： Provided are a recombinant yeast having improved ability to produce ginsenoside, which is prepared by overexpressing INO2 and INO4 or deleting OPT1 in a yeast having ability to produce ginsenoside, a method of preparing the yeast, and a method of producing ginsenoside by using the yeast.
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公开(公告)号：US20170342204A1
公开(公告)日：2017-11-30
申请号：US15534274
申请日：2015-12-01
发明人： Jae Chang LEE , Jong Geon JEGAL , Bong Keun SONG
IPC分类号： C08G63/08 , C08G63/85 , C08G63/91 , C08L101/00
CPC分类号： C08G63/08 , C08G63/78 , C08G63/85 , C08G63/91 , C08L101/00 , C09D167/04
摘要： The present invention relates to a method for preparing a stereoblock polylactide, comprising: a step of obtaining a first reaction mixture with a monomer conversion rate of 80 to 95% by adding a catalyst to a D-lactide and growing a PDLA chain; a step of obtaining a second reaction mixture with a monomer conversion rate of 80 to 95% by adding an L-lactide to the first reaction mixture and growing a racemic PDLLA chain at the end of the PDLA chain; and a step of further adding an L-lactide to the second reaction mixture and growing a PLLA chain at the end of the PDLLA chain through a polymerization reaction. The preparation method is capable of providing a more convenient synthesis by skipping a process of removing residual monomers in the middle of the reaction, and also of preventing multi-blocking and oligomerization of polymer chains due to a mixture of chains by gradually adding polymerizable monomers while controlling the monomer conversion rate in a one-port synthesis, thereby reducing chain transfer during the polymerization.
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公开(公告)号：US20210238348A1
公开(公告)日：2021-08-05
申请号：US17056981
申请日：2019-03-19
发明人： Jeyoung PARK , Dong Yeop OH , Sung Yeon HWANG , Hyun Gil CHA , Jong Geon JEGAL , Ho Jun KIM , Seul A PARK
摘要： The present disclosure relates to a method for preparing an aramid nanofiber dispersion. More specifically, the present invention relates to a method for preparing aramid nanofibers in a short time from aromatic polyamide-based polymers other than fibers, and to aramid nanofibers prepared therefrom.
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公开(公告)号：US20150353977A1
公开(公告)日：2015-12-10
申请号：US14655158
申请日：2013-12-26
发明人： Ju Hyun YU , Chan Duck JUNG , Seung Hwan LEE , In-Chul KIM , Kyung Sik HONG , In Yong EOM , Jong Geon JEGAL , Bong Keun SONG
CPC分类号： C12P19/02 , C12N1/20 , C12P19/14 , C12P2201/00
摘要： The present invention relates to a method for preparing, from wood-based biomass, a high concentration of fermentable sugar which can be effectively used in culturing various industrial fermented bacteria. According to the method of the present invention, biomass can be extracted by hot water prior to a pre-treatment so as to remove extractible substances such as mineral salts to thus minimize the content of impurities in raw materials for an enzymatic saccharification. The biomass from which substances extractible by hot water are removed is pre-treated in the condition where xylan yield rate is maximized, thus achieving maximum inhibition of the generation of over-decomposed products of sugar. Subsequently, fermentable sugar for culturing various industrial fermented bacteria can be prepared in an inexpensive manner by only concentrating, using a separator membrane, the sugar solution obtained by an enzymatic saccharification of the pre-treated solid content obtained by a solid-liquid separation without washing the solid content with water.
摘要翻译： 本发明涉及一种从木质生物质制备高浓度可发酵糖的方法，可发酵糖可有效用于培养各种工业发酵细菌。 根据本发明的方法，可以在预处理之前用热水提取生物质，以除去无机盐等可萃取物质，从而使用于糖化的原料中的杂质含量最小化。 去除由热水提取的物质的生物质在木聚糖产率最大化的条件下进行预处理，从而达到产生过度分解的糖的最大抑制。 随后，可以以便宜的方式制备用于培养各种工业发酵细菌的可发酵糖，其仅通过使用隔膜将通过酶固化获得的糖溶液浓缩得到的预处理固体含量通过固液分离而不洗涤 固体含量与水。
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公开(公告)号：US20220282048A1
公开(公告)日：2022-09-08
申请号：US17597430
申请日：2020-05-28
发明人： Sung Yeon HWANG , Jeyoung PARK , Dong Yeop OH , Tae Ho KIM , Si Gyeong LEE , Myung Suk SHIN , Jong Geon JEGAL
摘要： A biodegradable composite material which is produced by polymerizing a mixture of an aqueous dispersion of a natural polymer nanofiber including any one or more of a chitin nanofiber and a cellulose nanofiber, a dicarboxylic acid or a derivative thereof, and a diol. The biodegradable composite material has excellent biodegradable and mechanical properties.
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公开(公告)号：US20200157271A1
公开(公告)日：2020-05-21
申请号：US16618582
申请日：2018-07-11
发明人： Sung Yeon HWANG , Jeyoung PARK , Dong Yeop OH , Jong Geon JEGAL , Seon Mi KIM , Hyeon Yeol JEON
IPC分类号： C08G18/38 , C08G18/48 , C08G18/66 , C08G18/75 , C08G18/24 , C08G18/73 , C08J5/18 , C08G18/72
摘要： A self-restoring polyurethane-based polymer obtained by polymerization of a composition containing an aromatic disulfide diol represented by Chemical Formula, HO—Ar1—S—S—Ar2—OH, an alicyclic polyisocyanate, and a polyol. Ar1 and Ar2 each are independently a substituted or unsubstituted C6-C30 arylene group. The composition satisfies Equation, 0.1≤M[disulfide]/M[OH]. M[disulfide] is a total mole number of the aromatic disulfide diol in the composition, and M[OH] is a total mole number of the aromatic disulfide diol and the polyol in the composition.
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10.发明申请METHOD FOR PREPARING SUGAR, BIOETHANOL OR MICROBIAL METABOLITE FROM LIGNOCELLULOSIC BIOMASS 审中-公开从细菌生物量制备蔗糖，生物柴油或微生物代谢物的方法公开(公告)号：US20160298142A1
公开(公告)日：2016-10-13
申请号：US14991209
申请日：2014-06-09
发明人： Ju Hyun YU , Chan Duck JUNG , In Yong EOM , Seung Hwan LEE , Kyung Sik HONG , In Chul KIM , Jong Geon JEGAL , Bong Keun SONG
CPC分类号： C12P7/14 , C07H1/06 , C07H3/02 , C12P7/065 , C12P7/10 , C12P7/56 , C12P19/02 , C12P19/14 , C12P19/56 , C12P2201/00 , C13K1/02 , Y02E50/16 , Y02E50/17
摘要： The present invention relates to a method for preparing bioethanol from lignocellulosic biomass. The method of the present invention is capable of: minimizing the impurity content of an enzymatic saccharification raw material, by extracting biomass using hot water, before pretreatment, and removing extractable substances such as inorganic salts; suppressing, to the greatest extent, the production of overdecomposition products of sugar, by pretreating the biomass, from which the hot water extractable substances have been removed, in a condition for maximizing xylan yield; preparing fermentable sugar at a low cost, without washing a pretreated solid obtained from subsequent solid-liquid separation, but by only concentrating a sugar solution obtained after enzymatic saccharification, using a separation film; and preparing bioethanol therefrom in high yield.
摘要翻译： 本发明涉及从木质纤维素生物质制备生物乙醇的方法。 本发明的方法能够：通过在预处理之前用热水提取生物质，除去无机盐等可萃取物质，使酶糖化原料的杂质含量最小化。 在最大限度地抑制糖的过度分解产物的生产，通过在使木聚糖产率最大化的条件下预处理从其中除去热水可提取物质的生物质; 以低成本制备可发酵糖，而不洗涤从随后的固液分离得到的预处理固体，而仅通过使用分离膜浓缩酶糖化后获得的糖溶液; 并以高产率从其制备生物乙醇。
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