51
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Tsuge Y, Yamamoto S, Kato N, Suda M, Vertès AA, Yukawa H, Inui M. Overexpression of the phosphofructokinase encoding gene is crucial for achieving high production of D-lactate in Corynebacterium glutamicum under oxygen deprivation. Appl Microbiol Biotechnol 2015; 99:4679-89. [DOI: 10.1007/s00253-015-6546-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 03/12/2015] [Accepted: 03/14/2015] [Indexed: 12/26/2022]
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52
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Recent advances in the metabolic engineering of Corynebacterium glutamicum for the production of lactate and succinate from renewable resources. ACTA ACUST UNITED AC 2015; 42:375-89. [DOI: 10.1007/s10295-014-1538-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 11/06/2014] [Indexed: 02/02/2023]
Abstract
Abstract
Recent increasing attention to environmental issues and the shortage of oil resources have spurred political and industrial interest in the development of environmental friendly and cost-effective processes for the production of bio-based chemicals from renewable resources. Thus, microbial production of commercially important chemicals is viewed as a desirable way to replace current petrochemical production. Corynebacterium glutamicum, a Gram-positive soil bacterium, is one of the most important industrial microorganisms as a platform for the production of various amino acids. Recent research has explored the use of C. glutamicum as a potential cell factory for producing organic acids such as lactate and succinate, both of which are commercially important bulk chemicals. Here, we summarize current understanding in this field and recent metabolic engineering efforts to develop C. glutamicum strains that efficiently produce l- and d-lactate, and succinate from renewable resources.
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53
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Tran HT, Ajiro H, Akashi M. Thermally stable polylactides by stereocomplex formation and conjugation of both terminals with bio-based cinnamic acid derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra16867h] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A series of polylactide stereocomplexes with conjugation of both terminals showed high thermal stability and photoreactivity, and are useful as high performance polymers and photoreactive polymers based on natural products.
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Affiliation(s)
- Hang Thi Tran
- Faculty of Chemical Technology
- Viet Tri University of Industry
- Phu Tho
- Vietnam
| | - Hiroharu Ajiro
- Department of Applied Chemistry
- Osaka University
- Suita
- Japan
- The Center for Advanced Medical Engineering and Informatics
| | - Mitsuru Akashi
- Department of Applied Chemistry
- Osaka University
- Suita
- Japan
- The Center for Advanced Medical Engineering and Informatics
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54
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Thermal and Mechanical Properties of Biodegradable Star-Shaped/Linear Polylactide Stereocomplexes. J CHEM-NY 2015. [DOI: 10.1155/2015/206123] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The 6-arm star-shaped poly(L-lactide) (6PLL)/linear poly(D-lactide) (1PDL) stereocomplex films were prepared by the solvent casting method. The influences of the 6PLL/1PDL blend ratios (75/25, 50/50, and 25/75 w/w) and 1PDL molecular weights (15,000, 30,000, and 60,000 g/mol) on the thermal and mechanical properties of the stereocomplex films were investigated. The 6PLL and 1PDLs had a single melting temperature (Tm) of homocrystallites at 174°C and 167°C, respectively. The 6PLL/1PDL blends had twoTms: a lowerTmof homocrystallites (160–173°C) and a higherTmof stereocomplex crystallites (219–228°C). The stereocomplex crystallinity and mechanical properties of the 6PLL/1PDL blend films were higher than those of 6PLL and 1PDL and were the highest in the 50/50 (w/w) blend ratio. However, the stereocomplex crystallinity of the 50/50 (w/w) 6PLL/1PDL blend films decreased and the mechanical properties increased as the molecular weight of 1PDL increased.
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55
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Feng X, Ding Y, Xian M, Xu X, Zhang R, Zhao G. Production of optically pure d-lactate from glycerol by engineered Klebsiella pneumoniae strain. BIORESOURCE TECHNOLOGY 2014; 172:269-275. [PMID: 25270041 DOI: 10.1016/j.biortech.2014.09.074] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Revised: 09/14/2014] [Accepted: 09/15/2014] [Indexed: 05/16/2023]
Abstract
In this study, glycerol was used to produce optically pure d-lactate by engineered Klebsiella pneumoniae strain. In the recombinant strain, d-lactate dehydrogenase LdhA was overexpressed, and two genes, dhaT and yqhD for biosynthesis of main byproduct 1,3-propanediol, were knocked out. To further improve d-lactate production, the culture condition was optimized and the results demonstrated that aeration rate played an important role in d-lactate production. In microaerobic fed-batch fermentation, the engineered strain accumulated 142.1g/L optically pure d-lactate with a yield of 0.82g/g glycerol, which represented the highest d-lactate production from glycerol so far. This study showed that K. pneumoniae strain has high efficiency to convert glycerol into d-lactate and high potentiality in utilization of crude glycerol from biodiesel industry.
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Affiliation(s)
- Xinjun Feng
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yamei Ding
- Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
| | - Mo Xian
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Xin Xu
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Rubing Zhang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
| | - Guang Zhao
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
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56
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Shao J, Tang Z, Sun J, Li G, Chen X. Linear and four-armed poly(l-lactide)-block-poly(d-lactide) copolymers and their stereocomplexation with poly(lactide)s. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/polb.23597] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jun Shao
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
- College of chemistry and chemical engineering; JiangXi Normal University; Nanchang 330022 China
| | - Zhaohui Tang
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Jingru Sun
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Gao Li
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences; Changchun 130022 China
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57
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Sun J, Wang Y, Wu B, Bai Z, He B. Enhanced production of d-lactic acid by Sporolactobacillus sp.Y2-8 mutant generated by atmospheric and room temperature plasma. Biotechnol Appl Biochem 2014; 62:287-92. [PMID: 24980609 DOI: 10.1002/bab.1267] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 06/25/2014] [Indexed: 11/08/2022]
Abstract
To improve the production of d-lactic acid, atmospheric and room temperature plasma (ARTP) was used to generate mutations in Sporolactobacillus sp. Y2-8. An efficient mutant YBS1-5 was rapidly isolated by implanting ARTP twice with a 100 W radio-frequency power input, 10 standard liters per minute of the helium flow, and a 2 mm treatment distance. Significant improvement of d-lactic acid productivity (1.39 g L(-1) H(-1) ) by YBS1-5 was achieved, and it was 41.84% higher than the productivity (0.98 g L(-1) H(-1) ) of Y2-8. Moreover, the dry cell weight of YBS1-5 was 16.7% higher than that of Y2-8. Metabolic activities of concerned substrates related with key enzymes of d-lactic acid fermentation were analyzed by Biolog approach. Results showed that the activities of the key enzymes glucokinase and d-lactate dehydrogenase in mutant YBS1-5 were increased by approximately 45% and 66%, respectively, in comparison with those of the strain Y2-8. Fed-batch fermentation further improved the productivity; 127 g L(-1) d-lactic acid in 74 H by YBS1-5 with higher productivity (1.72 g L(-1) H(-1) ) was achieved. The subculture experiments indicated that YBS1-5 was genetically stable after eight generations.
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Affiliation(s)
- Jiaduo Sun
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Technology University, Nanjing, Jiangsu, People's Republic of China
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58
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Genome Sequence of Sporolactobacillus terrae DSM 11697, the Type Strain of the Species. GENOME ANNOUNCEMENTS 2014; 2:2/3/e00465-14. [PMID: 24874673 PMCID: PMC4038878 DOI: 10.1128/genomea.00465-14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Sporolactobacillus terrae DSM 11697 is the type strain of S. terrae. Here, we present a 3.2-Mb assembly of its genome sequence. As S. terrae is one of the important lactic acid bacteria, the genome sequence may provide insights into the molecular mechanism for its further microbial investigation.
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59
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Kanno T, Oyama HT, Usugi S. Effects of molecular weight and catalyst on stereoblock formation via solid state polycondensation of poly(lactic acid). Eur Polym J 2014. [DOI: 10.1016/j.eurpolymj.2014.02.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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60
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Tsuge Y, Kawaguchi H, Sasaki K, Tanaka T, Kondo A. Two-step production of d-lactate from mixed sugars by growing and resting cells of metabolically engineered Lactobacillus plantarum. Appl Microbiol Biotechnol 2014; 98:4911-8. [DOI: 10.1007/s00253-014-5594-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 02/03/2014] [Accepted: 02/04/2014] [Indexed: 12/20/2022]
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61
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Bai H, Liu H, Bai D, Zhang Q, Wang K, Deng H, Chen F, Fu Q. Enhancing the melt stability of polylactide stereocomplexes using a solid-state cross-linking strategy during a melt-blending process. Polym Chem 2014. [DOI: 10.1039/c4py00700j] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective cross-linking of PLLA and PDLA chain couples in the amorphous phase allows for the formation of stereocomplex (sc) crystallites in the continuous melting and recrystallization process to be perfectly reversible.
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Affiliation(s)
- Hongwei Bai
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
- College of Light Industry
- Textile and Food Engineering
| | - Huili Liu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
| | - Dongyu Bai
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
| | - Qin Zhang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
| | - Ke Wang
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
| | - Hua Deng
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
| | - Feng Chen
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
| | - Qiang Fu
- College of Polymer Science and Engineering
- State Key Laboratory of Polymer Materials Engineering
- Chengdu 610065, P. R. China
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62
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d- and l-lactic acid production from fresh sweet potato through simultaneous saccharification and fermentation. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.10.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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63
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Kobayashi S. Green Polymer Chemistry: Recent Developments. ADVANCES IN POLYMER SCIENCE 2013. [DOI: 10.1007/12_2013_236] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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64
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Purnama P, Kim SH. Biodegradable blends of stereocomplex polylactide and lignin by supercritical carbon dioxide-solvent system. Macromol Res 2013. [DOI: 10.1007/s13233-014-2004-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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65
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Purnama P, Hyun Kim S. Stereocomplex formation of polylactide using microwave irradiation. POLYM INT 2013. [DOI: 10.1002/pi.4581] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Purba Purnama
- Biomaterials Research Center; Korea Institute of Science and Technology; Seoul 136-791 Korea
| | - Soo Hyun Kim
- Biomaterials Research Center; Korea Institute of Science and Technology; Seoul 136-791 Korea
- KU-KIST Graduate School of Converging Science and Technology; Korea University; Seoul 136-701 Korea
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66
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Li Y, Wang L, Ju J, Yu B, Ma Y. Efficient production of polymer-grade D-lactate by Sporolactobacillus laevolacticus DSM442 with agricultural waste cottonseed as the sole nitrogen source. BIORESOURCE TECHNOLOGY 2013; 142:186-191. [PMID: 23735801 DOI: 10.1016/j.biortech.2013.04.124] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 04/29/2013] [Accepted: 04/30/2013] [Indexed: 06/02/2023]
Abstract
In this study, we show that Sporolactobacillus laevolacticus DSM442 can produce d-lactate by using cottonseed as the sole nitrogen source. The cottonseed was enzymatically hydrolyzed and simultaneously utilized during d-lactate fermentation. Under optimal conditions, a high d-lactic acid concentration (144.4 g/L) was obtained in a fed-batch fermentation within 35 h, with an average productivity of 4.13 g/(Lh) and a yield of 0.96 g/g glucose. The optical purity of d-lactic acid in the broth was 99.3%, which meets the requirement for use in lactic acid polymerization. Our study represents a cost-effective method for polymer-grade d-lactate production using cheap agricultural wastes.
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Affiliation(s)
- Yuan Li
- Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China
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67
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Green polymer chemistry: lipase-catalyzed synthesis of bio-based reactive polyesters employing itaconic anhydride as a renewable monomer. Polym J 2013. [DOI: 10.1038/pj.2013.62] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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68
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Tsuge Y, Yamamoto S, Suda M, Inui M, Yukawa H. Reactions upstream of glycerate-1,3-bisphosphate drive Corynebacterium glutamicum (D)-lactate productivity under oxygen deprivation. Appl Microbiol Biotechnol 2013; 97:6693-703. [PMID: 23712891 DOI: 10.1007/s00253-013-4986-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 05/06/2013] [Accepted: 05/07/2013] [Indexed: 11/25/2022]
Abstract
We previously demonstrated the simplicity of oxygen-deprived Corynebacterium glutamicum to produce D-lactate, a primary building block of next-generation biodegradable plastics, at very high optical purity by introducing heterologous D-ldhA gene from Lactobacillus delbrueckii. Here, we independently evaluated the effects of overexpressing each of genes encoding the ten glycolytic enzymes on D-lactate production in C. glutamicum. We consequently show that while the reactions catalyzed by glucokinase (GLK), glyceraldehyde 3-phosphate dehydrogenase (GAPDH), phosphofructokinase (PFK), triosephosphate isomerase (TPI), and bisphosphate aldolase had positive effects on D-lactate productivity by increasing 98, 39, 15, 13, and 10 %, respectively, in 10 h reactions in minimal salts medium, the reaction catalyzed by pyruvate kinase had large negative effect by decreasing 70 %. The other glycolytic enzymes did not affect D-lactate productivity when each of encoding genes was overexpressed. It is noteworthy that all reactions associated with positive effects are located upstream of glycerate-1,3-bisphosphate in the glycolytic pathway. The D-lactate yield also increased by especially overexpressing TPI encoding gene up to 94.5 %. Interestingly, overexpression of PFK encoding gene reduced the yield of succinate, one of the main by-products of D-lactate production, by 52 %, whereas overexpression of GAPDH encoding gene increased succinate yield by 26 %. Overexpression of GLK encoding gene markedly increased the yield of dihydroxyacetone and glycerol by 10- and 5.8-fold in exchange with decreasing the D-lactate yield. The effect of overexpressing glycolytic genes was also evaluated in 80 h long-term reactions. The variety of effects of overexpressing each of genes encoding the ten glycolytic enzymes on D-lactate production is discussed.
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Affiliation(s)
- Yota Tsuge
- Research Institute of Innovative Technology for the Earth (RITE), 9-2, Kizugawadai, Kizugawa-shi, Kyoto, 619-0292, Japan
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69
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Purnama P, Jung Y, Kim SH. Melt stability of 8-arms star-shaped stereocomplex polylactide with three-dimensional core structures. Polym Degrad Stab 2013. [DOI: 10.1016/j.polymdegradstab.2013.02.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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70
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Kang MK, Jung Y, Kim SH. Biodegradable stereocomplex polylactide having flexible ɛ-caprolactone unit. Macromol Res 2013. [DOI: 10.1007/s13233-013-1120-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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71
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Wieschalka S, Blombach B, Bott M, Eikmanns BJ. Bio-based production of organic acids with Corynebacterium glutamicum. Microb Biotechnol 2012. [PMID: 23199277 PMCID: PMC3917452 DOI: 10.1111/1751-7915.12013] [Citation(s) in RCA: 133] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
The shortage of oil resources, the steadily rising oil prices and the impact of its use on the environment evokes an increasing political, industrial and technical interest for development of safe and efficient processes for the production of chemicals from renewable biomass. Thus, microbial fermentation of renewable feedstocks found its way in white biotechnology, complementing more and more traditional crude oil-based chemical processes. Rational strain design of appropriate microorganisms has become possible due to steadily increasing knowledge on metabolism and pathway regulation of industrially relevant organisms and, aside from process engineering and optimization, has an outstanding impact on improving the performance of such hosts. Corynebacterium glutamicum is well known as workhorse for the industrial production of numerous amino acids. However, recent studies also explored the usefulness of this organism for the production of several organic acids and great efforts have been made for improvement of the performance. This review summarizes the current knowledge and recent achievements on metabolic engineering approaches to tailor C. glutamicum for the bio-based production of organic acids. We focus here on the fermentative production of pyruvate, L- and D-lactate, 2-ketoisovalerate, 2-ketoglutarate, and succinate. These organic acids represent a class of compounds with manifold application ranges, e.g. in pharmaceutical and cosmetics industry, as food additives, and economically very interesting, as precursors for a variety of bulk chemicals and commercially important polymers.
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Affiliation(s)
- Stefan Wieschalka
- Institute of Microbiology and Biotechnology, University of Ulm, Ulm, Germany
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72
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Ishimoto K, Arimoto M, Okuda T, Yamaguchi S, Aso Y, Ohara H, Kobayashi S, Ishii M, Morita K, Yamashita H, Yabuuchi N. Biobased Polymers: Synthesis of Graft Copolymers and Comb Polymers Using Lactic Acid Macromonomer and Properties of the Product Polymers. Biomacromolecules 2012; 13:3757-68. [DOI: 10.1021/bm301212a] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | | | | | | | | | | | | | - Masahiko Ishii
- Vehicle Engineering Group, Toyota, Paint & Finishing Design Department, Toyota Motor Co., Aichi 471-8572, Japan
| | - Koji Morita
- Basic Technologies
Division,
Nippon Bee Chemical Co., Shodai-Ohtani, Hirakata, Osaka 573-1153,
Japan
| | - Hirofumi Yamashita
- Basic Technologies
Division,
Nippon Bee Chemical Co., Shodai-Ohtani, Hirakata, Osaka 573-1153,
Japan
| | - Naoya Yabuuchi
- Basic Technologies
Division,
Nippon Bee Chemical Co., Shodai-Ohtani, Hirakata, Osaka 573-1153,
Japan
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73
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D-lactic acid production from dry biomass of Hydrodictyon reticulatum by simultaneous saccharification and co-fermentation using Lactobacillus coryniformis subsp. torquens. Biotechnol Lett 2012; 34:2235-40. [PMID: 22932931 PMCID: PMC3486992 DOI: 10.1007/s10529-012-1023-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Accepted: 07/16/2012] [Indexed: 11/22/2022]
Abstract
d-Lactic acid production from dry biomass of the microalga, Hydrodictyon reticulatum, was carried out in a 5-l jar fermentor (initial pH 6, 34 °C using CaCO3 as a neutralizing agent) through simultaneous saccharification and co-fermentation using the Lactobacillus coryniformis subsp. torquens. After 36 h, 36.6 g lactic acid/l was produced from 80 g H. reticulatum/l in the medium containing 3 g yeast extract/l and 3 g peptone/l in the absence of mineral salts. The maximum productivity, average productivity and yield were 2.38 g/l h, 1.02 g/l h and 45.8 %, respectively. The optical purity of d-Lactic acid ranged from 95.8–99.6 %. H. reticulatum is thus a promising biomass material for the production of d-Lactic acid.
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74
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Purnama P, Jung Y, Kim SH. Stereocomplexation of Poly(l-lactide) and Random Copolymer Poly(d-lactide-co-ε-caprolactone) To Enhance Melt Stability. Macromolecules 2012. [DOI: 10.1021/ma202814c] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Purba Purnama
- Biomaterials
Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
- University of Science and Technology,
113 Gwahangno, Yuseong-gu, Daejeon 305-333, Korea
| | - Youngmee Jung
- Biomaterials
Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
| | - Soo Hyun Kim
- Biomaterials
Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
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75
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Okuda T, Ishimoto K, Ohara H, Kobayashi S. Renewable Biobased Polymeric Materials: Facile Synthesis of Itaconic Anhydride-Based Copolymers with Poly(l-lactic acid) Grafts. Macromolecules 2012. [DOI: 10.1021/ma300387j] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Tomoya Okuda
- Department of Biobased Materials
Science, Kyoto Institute of Technology,
Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Kiyoaki Ishimoto
- Department of Biobased Materials
Science, Kyoto Institute of Technology,
Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Hitomi Ohara
- Department of Biobased Materials
Science, Kyoto Institute of Technology,
Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shiro Kobayashi
- Center for Nanomaterials and
Devices, Kyoto Institute of Technology,
Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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76
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Purnama P, Hyun Kim S. Rapid stereocomplex formation of polylactide using supercritical fluid technology. POLYM INT 2012. [DOI: 10.1002/pi.4162] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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77
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78
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Nakano S, Ugwu CU, Tokiwa Y. Efficient production of D-(-)-lactic acid from broken rice by Lactobacillus delbrueckii using Ca(OH)2 as a neutralizing agent. BIORESOURCE TECHNOLOGY 2012; 104:791-794. [PMID: 22093977 DOI: 10.1016/j.biortech.2011.10.017] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2011] [Revised: 10/04/2011] [Accepted: 10/06/2011] [Indexed: 05/31/2023]
Abstract
Effects of Ca(OH)(2), NH(4)OH, and NaOH as neutralizing agents for efficient recovery of lactic acid was investigated. Lactic acid was produced from broken rice in a simultaneous saccharification and fermentation (SSF) process with Lactobacillus delbrueckii. Consumption of glucose (from broken rice) by the cells and the cell growth were the best with Ca(OH)(2) among the three neutralizing agents used. Maximum productivities of lactic acid reached with Ca(OH)(2), NH(4)OH, and NaOH were 3.59 g l(-1) h(-1), 1.51 g 1(-1) h(-1), and 1.40 g l(-1) h(-1), respectively. Ca(OH)(2) reduced the lactate molarity of the fermentation broth, and thus resulted in the highest lactic acid productivity. Furthermore, it was apparently clear that divalent cation (Ca(2+)) was more effective in neutralizing the cultures compared to monovalent (Na(+) and NH(3)(+)) cations.
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Affiliation(s)
- Shinta Nakano
- Tajimaya Co. Ltd., 717 Kamitakatsu, Tsuchiura, Ibaraki 300-0811, Japan
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79
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Draft genome sequence of Sporolactobacillus inulinus strain CASD, an efficient D-lactic acid-producing bacterium with high-concentration lactate tolerance capability. J Bacteriol 2011; 193:5864-5. [PMID: 21952540 DOI: 10.1128/jb.05934-11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sporolactobacillus inulinus CASD is an efficient D-lactic acid producer with high optical purity. Here we report for the first time the draft genome sequence of S. inulinus (2,930,096 bp). The large number of annotated two-component system genes makes it possible to explore the mechanism of extraordinary lactate tolerance of S. inulinus CASD.
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80
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Ohara H, Nishioka E, Yamaguchi S, Kawai F, Kobayashi S. Protease-Catalyzed Oligomerization and Hydrolysis of Alkyl Lactates Involving l-Enantioselective Deacylation Step. Biomacromolecules 2011; 12:3833-7. [DOI: 10.1021/bm201004g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hitomi Ohara
- Department of Biobased Materials Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
| | - Emiko Nishioka
- Department of Biobased Materials Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
| | - Syuhei Yamaguchi
- Department of Biobased Materials Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku,
Kyoto 606-8585, Japan
| | - Fusako Kawai
- Center
for Nanomaterials and Devices, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shiro Kobayashi
- Center
for Nanomaterials and Devices, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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81
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A new poly(l-lactide)-grafted graphite oxide composite: Facile synthesis, electrical properties and crystallization behaviors. Polym Degrad Stab 2010. [DOI: 10.1016/j.polymdegradstab.2010.07.023] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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82
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Ueda M, Makino A, Imai T, Sugiyama J, Kimura S. Rational design of peptide nanotubes for varying diameters and lengths. J Pept Sci 2010; 17:94-9. [PMID: 21234980 DOI: 10.1002/psc.1304] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Revised: 08/16/2010] [Accepted: 08/24/2010] [Indexed: 11/11/2022]
Abstract
Amphiphilic helical peptides (Sar)(m) -b-(L-Leu-Aib)(n) (m = 22-25; n = 7, 8, 10) with a hydrophobic block as a right-handed helix were synthesized and their mixtures with (Sar)(25) -b-(D-Leu-Aib)(6) containing the hydrophobic block as a left-handed helix were examined in their molecular assembly formation. The single component (Sar)(25) -b-(D-Leu-Aib)(6) forms peptide nanotubes of 70 nm diameter and 200 nm length. The two-component mixtures of (Sar)(25) -b-(D-Leu-Aib)(6) with (Sar)(24) -b-(L-Leu-Aib)(7) , (Sar)(22) -b-(L-Leu-Aib)(8) , and (Sar)(25) -b-(L-Leu-Aib)(10) yield peptide nanotubes of varying dimensions with 200 nm diameter and 400 nm length, 70 nm diameter and several micrometer length (maximum 30 µm), and 70 nm diameter and 100-600 nm length, respectively. The right-handed and the left-handed helix were thus found to be molecularly mixed due to the stereo-complex formation and to generate nanotubes of different sizes. When the mismatch of the hydrophobic helical length between the two components was of four residues, the longest nanotube was generated. Correspondingly, the hydrophobic helical segments have to interdigitate with an anti-parallel orientation at the hydrophobic core region of the nanotube.
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Affiliation(s)
- Motoki Ueda
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto-Daigaku-Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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83
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Highly efficient production of D-lactate by Sporolactobacillus sp. CASD with simultaneous enzymatic hydrolysis of peanut meal. Appl Microbiol Biotechnol 2010; 89:1009-17. [PMID: 21042797 DOI: 10.1007/s00253-010-2904-9] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2010] [Revised: 09/17/2010] [Accepted: 09/18/2010] [Indexed: 10/19/2022]
Abstract
Highly efficient D-lactate production by Sporolactobacillus sp. strain CASD was demonstrated in this study. Peanut meal was found to be a better nutrient than yeast extract, soybean meal, soybean peptone, corn steep, liquor beef extract, and ammonium sulfate in the production of D-lactate. To improve the utilization of peanut meal, the material was enzymatically hydrolyzed and simultaneously utilized as the nitrogen source in D-lactate fermentation. Very high D-lactate production (207 g/L) was obtained using 40 g/L of peanut meal in 30-L fed-batch fermentation, with the average productivity of 3.8 g/(L·h) and optical purity of 99.3%. The production of such a high concentration of optically pure D-lactate by strain CASD, with the simultaneous enzymatic hydrolysis of peanut meal and fermentation, represents a new cost-efficient and integrated method for D-lactate production using agricultural by-products.
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84
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Ohara H, Onogi A, Yamamoto M, Kobayashi S. Lipase-Catalyzed Oligomerization and Hydrolysis of Alkyl Lactates: Direct Evidence in the Catalysis Mechanism That Enantioselection Is Governed by a Deacylation Step. Biomacromolecules 2010; 11:2008-15. [DOI: 10.1021/bm1003674] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hitomi Ohara
- R&D Center for Bio-Based Materials, Department of Bio-Based Materials Science, and Center for Nanomaterials and Devices, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Akihisa Onogi
- R&D Center for Bio-Based Materials, Department of Bio-Based Materials Science, and Center for Nanomaterials and Devices, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Masafumi Yamamoto
- R&D Center for Bio-Based Materials, Department of Bio-Based Materials Science, and Center for Nanomaterials and Devices, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Shiro Kobayashi
- R&D Center for Bio-Based Materials, Department of Bio-Based Materials Science, and Center for Nanomaterials and Devices, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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85
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Purnama P, Kim SH. Stereocomplex Formation of High-Molecular-Weight Polylactide Using Supercritical Fluid. Macromolecules 2009. [DOI: 10.1021/ma902536p] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Purba Purnama
- Biomaterials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
- University of Science and Technology, 113 Gwahangno, Yuseong-gu, Daejeon 305-333, Korea
| | - Soo Hyun Kim
- Biomaterials Research Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
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86
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Ishimoto K, Arimoto M, Ohara H, Kobayashi S, Ishii M, Morita K, Yamashita H, Yabuuchi N. Biobased Polymer System: Miniemulsion of Poly(alkyl methacrylate-graft-lactic acid)s. Biomacromolecules 2009; 10:2719-23. [DOI: 10.1021/bm9007937] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kiyoaki Ishimoto
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Maho Arimoto
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Hitomi Ohara
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Shiro Kobayashi
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Masahiko Ishii
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Kouji Morita
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Hirofumi Yamashita
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
| | - Naoya Yabuuchi
- R&D Center for Bio-based Materials, Kyoto Institute of Technology, Matsugasaki, Kyoto 606-8585, Japan, Paint and Finishing Design Department, Vehicle Engineering Group, Toyota Motor Company, Toyota, Aichi 471-8572, Japan, and Basic Technologies Division, Nippon Bee Chemical Company, Shodai-Ohtani, Hirakata, Osaka 573-1153, Japan
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87
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Bouapao L, Tsuji H. Stereocomplex Crystallization and Spherulite Growth of Low Molecular Weight Poly(L-lactide) and Poly(D-lactide) from the Melt. MACROMOL CHEM PHYS 2009. [DOI: 10.1002/macp.200900017] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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88
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89
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Li SH, Woo EM. Kinetic Analysis on Effect of Poly(4-vinyl phenol) on Complex-Forming Blends of Poly(L-lactide) and Poly(D-lactide). Polym J 2009. [DOI: 10.1295/polymj.pj2008198] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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90
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Unique crystallization behavior of poly(l-lactide)/poly(d-lactide) stereocomplex depending on initial melt states. POLYMER 2008. [DOI: 10.1016/j.polymer.2008.10.028] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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91
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Fukushima K, Kimura Y. An efficient solid-state polycondensation method for synthesizing stereocomplexed poly(lactic acid)s with high molecular weight. ACTA ACUST UNITED AC 2008. [DOI: 10.1002/pola.22712] [Citation(s) in RCA: 101] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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