| 1. |
＃Koichiro Ishida, Shingo Yokota, Tetsuo Kondo, Emulsifying Properties of α-Chitin Nanofibrils Prepared by Aqueous Counter Collision, Journal of Fiber Science and Technology, 10.2115/fiberst.2021-0022, 77, 8, 203-212, 2021.08. |
| 2. |
Koichiro Ishida, Shingo Yokota, Tetsuo Kondo, Localized surface acetylation of aqueous counter collision cellulose nanofibrils using a Pickering emulsion as an interfacial reaction platform, Carbohydrate Polymers, 10.1016/j.carbpol.2021.117845, 261, Carbohydrate Polymers 261 (2021) 117845, 2021.02, ナノサイズの繊維状ビルディングブロックの自己組織化は、生体模倣設計および階層的に構築されたバイオベースの材料の構築に不可欠である。そのようなナノフィブリルの表面上の疎水性部分の局在化は、水系における階層的集合の鍵となる。この研究では、両親媒性セルロースナノフィブリル（CNF）を含む独自の自己組織化繊維ビルディングブロックが、水性カウンターコリジョン（ACC）によって調製された。この研究の目的は、ピッカリングエマルションの油/水界面でACC-CNFの表面を選択的にアセチル化することにより、ACC-CNFの表面特性を制御することである。ACC-CNFが反応試薬を含む油滴の表面に吸着されると、局所的な界面反応が発生した。このようなアセチル化反応は、元のCNFの結晶化度と繊維形態を維持しながら達成された。本明細書に記載のアセチル化ACC-CNFからキャストされたフィルムの表面は、均質な分散液で調製されたアセチル化ACC-CNFからキャストされたフィルムの表面とは著しく対照的な独特の自己凝集特性を有していた。. |
| 3. |
Gento Ishikawa, Tetsuo Kondo, Characterization of dual nano-size effects of ACC-cellulose nanofibrils on crystallization behavior of hydrophilic poly(vinyl alcohol), Journal of Wood Science, 10.1186/s10086-021-01957-9, 67, 1, 2021.03, 作成中. |
| 4. |
Shingo Yokota, Satomi Tagawa, Tetsuo Kondo, Facile surface modification of amphiphilic cellulose nanofibrils prepared by aqueous counter collision, Carbohydrate Polymers, 10.1016/j.carbpol.2020.117342, 255, Carbohydrate Polymers 255 (2021) 117342, 2021.03, 本研究は、水性カウンターコリジョン（ACC）によって調製されたセルロースナノフィブリル（CNF）の表面の化学修飾に関するものである。ACCによって調製された木材由来のCNFは、水性分散液中で無水酢酸でアセチル化された。中程度にアセチル化されたナノフィブリルは、未修飾のCNFよりも水に容易に分散したが、結晶セルロースIを含む元のナノファイバーの形態はほとんど変化しなかった。これは、結晶性CNFの表面が選択的にアセチル化されており、ナノフィブリル間の自己凝集を阻害し、それによって水性媒体への分散を促進したことを示している。添加剤がないにもかかわらず、アセチル化されたCNFは疎水性表面に容易に吸着され、水との適合性を維持した。これにより、エマルジョンを安定させ、プラスチック樹脂粒子を水中でコーティングする能力が向上した。結果は、ACCによって調製されたCNFの両親媒性は、この簡単な表面アセチル化法によって制御できることを示す。これにより、さまざまな分野での有用性が高まる可能性がある。. |
| 5. |
Satomi Tagawa, Koichiro Ishida, Tsubasa Tsuiji, Tetsuo Kondo, Facile size evaluation of cellulose nanofibrils adsorbed on polypropylene substrates using fluorescence microscopy, Cellulose, 10.1007/s10570-021-03759-0, 28, 5, 2917-2929, 2021.02, 作成中. |
| 6. |
Tsubasa Tsuji, Kunio Tsuboi, Shingo Yokota, Satomi Tagawa, Tetsuo Kondo, Characterization of an Amphiphilic Janus-Type Surface in the Cellulose Nanofibril Prepared by Aqueous Counter Collision, Biomacromolecules, 10.1021/acs.biomac.0c01464, 62, 2, 620-628, 2021.01, バイオベースの持続可能な高性能ナノフィブリルとして大きな注目を集めているセルロースナノフィブリルは、主に親水性であると考えられている。この研究は、水性カウンターコリジョン法によって調製されたセルロースナノフィブリル（ACC-CNF）の疎水性および親水性面を備えた水中の両親媒性「ヤヌス型繊維表面」の存在を証明することを目的とした。ACC-CNFの表面特性は、炭水化物結合モジュールと、セルロース繊維表面の疎水性平面のコンゴーレッドプローブ、および親水性平面プローブとしてのカルコフルオルホワイトを使用した共焦点レーザー走査顕微鏡によって明らかにした。結果は、両親媒性ヤヌス型構造を検証する単一のACC-CNF表面上に両方の特徴的な平面が存在することを示した。. |
| 7. |
Shintaro Matsuo, Satomi Tagawa, Yudai Matsusaki, Yuri Uchi, Tetsuo Kondo, Callose-synthesizing enzymes as membrane proteins of betula protoplasts secrete bundles of β-1,3-glucan hollow fibrils under ca2+-rich and acidic culture conditions, Holzforschung, 10.1515/hf-2019-0142, 2020.01, Previously, it was reported that plant protoplasts isolated from Betula platyphylla (white birch) callus secreted bundles of hollow callose fibrils in acidic culture medium containing a high concentration of calcium ions (Ca2+). Here, the callose synthase was characterized from in situ and in vitro perspectives. Localization of callose synthases at the secreting site of callose fiber was indicated from in situ immunostaining observation of protoplasts. For in vitro analyses, membrane proteins were extracted from membrane fraction of protoplasts with a 3-[(3-cholamidopropyl)-dimethylammonio]-1-propanesulfonate (CHAPS) treatment. The CHAPS extract aggregated in the presence of a high concentration of Ca2+, suggesting that Ca2+ may promote the arrangement of callose synthases in the plasma membrane. The callose synthase activity was dependent on pH and Ca2+, similar to the callose synthase of Arabidopsis thaliana. However, the synthesized fibril products were longer than those produced by callose synthases of herbaceous plants. This is the first insight into the specific properties of callose synthases of woody plants that secrete of callose hollow fibers.. |
| 8. |
Shingo Yokota, Keita Kamada, Aki Sugiyama, Tetsuo Kondo, Pickering emulsion stabilization by using amphiphilic cellulose nanofibrils prepared by aqueous counter collision, Carbohydrate Polymers, 10.1016/j.carbpol.2019.115293, 226, 2019.12, Cellulose nanofibrils prepared by aqueous counter collision (ACC-nanocelluloses) have specific properties. In this study, the use of ACC-nanocelluloses as emulsifiers and stabilizers was investigated. Oil-in-water Pickering emulsions with long-term stabilities were easily prepared by ultrasonically mixing aqueous ACC-nanocellulose dispersions with non-polar solvents. Stable Pickering emulsions were obtained because the emulsification abilities of the ACC-nanocelluloses were significantly higher than those of cellulose nanofibrils prepared by high-pressure homogenization or other chemical preparation methods. This might be due to exposure of inherently hydrophobic surface planes of cellulose nanofibrils by ACC. The emulsification and stability of the Pickering emulsions were sensitive to the solvent properties such as permittivity, density and viscosity.. |
| 9. |
Suresh N. Rao, Yutaro Tsujita, Tetsuo Kondo, Surface modification of oriented polysaccharide scaffolds using biotic nanofibers for epidermal cell culture, Cellulose, 10.1007/s10570-019-02615-6, 26, 13-14, 7971-7981, 2019.09. |
| 10. |
Yutaro Tsujita, Tetsuo Kondo, A building block of collagen fibrils demonstrated by sequential aqueous counter collision process, Journal of Fiber Science and Technology, 10.2115/fiberst.2019-0014, 75, 9, 112-118, 2019.09. |
| 11. |
Satomi Tagawa,Yusuke Yamagishi,Ugai Watanabe,Ryo Funada,Tetsuo Kondo, Dynamics of structural polysaccharides deposition on the plasma-membrane surface of plant protoplasts during cell wall regeneration, Journal of Wood Science, 10.1186/s10086-019-1826-0, 65, 2019.09. |
| 12. |
Satomi Tagawa, Tetsuo Kondo, Secretion of a callose hollow fiber from herbaceous plant protoplasts induced by inhibition of cell wall formation, Journal of Wood Science, 10.1007/s10086-018-1726-8, 64, 5, 467-476, 2018.05, セルロースナノファイバーについて、世界を代表する研究者で種々の現象の結果とその応用展開の可能性について論じたものである。. |
| 13. |
Gento Ishikawa, Tetsuo Kondo, Thermodynamic effect on interaction between crystalline phases in size-controlled ACC-bacterial nanocellulose and poly(vinyl alcohol), Cellulose, 10.1007/s10570-017-1532-2, 24, 12, 5495-5503, 2017.12. |
| 14. |
Aya Nagashima, Tsubasa Tsuji, Tetsuo Kondo, A uniaxially oriented nanofibrous cellulose scaffold from pellicles produced by Gluconacetobacter xylinus in dissolved oxygen culture, Carbohydrate Polymers, 10.1016/j.carbpol.2015.08.077, 135, 1, 215-224, 2016.01. |
| 15. |
Ju Fang, Shin Kawano, Kenji Tajima, Kondo Tetsuo, In Vivo Curdlan/Cellulose Bionanocomposite Synthesis by Genetically Modified Gluconacetobacter xylinus, Biomacromolecules, 10.1021/acs.biomac.5b01075, 16, 10, 3154-3160, 2015.10, 最小の遺伝子導入（菌体外分泌機能をつかさどる遺伝子導入なしで）で、合成遺伝子の組み換え効果と同時に物理化学的効果を組み合わせることにより、酢酸菌によりカードランを菌体外に分泌させると同時に、セルロースナノファイバーの生産分泌も同時に行わせることに成功した。このことは、カードラン・ナノセルロース ナノコンポジットの直接生物製造プロセスの構築を完成させたことになり、それを当該分野の世界的な雑誌「Biomacromolecules」IF=5.750で提案した。. |
| 16. |
Yue Zhao, Satoshi Koizumi, Daisuke Yamaguchi, Tetsuo Kondo, Hierarchical structure in microbial cellulose: What happens during the drying process, The European Physical Journal E, 10.1140/epje/i2014-14129-7, 37, Page12(1-12), 2014.12. |
| 17. |
Tetsuo Kondo, Ryouta Kose, Hiroki Naito, Wakako Kasai, Aqueous counter collision using paired water jets as a novel means of preparing bio-nanofibers, Carbohydrate Polymers, 10.1016/j.carbpol.2014.05.064, 112, 1, 284-290, 2014.11. |
| 18. |
Tetsuo Kondo, Wakako Kasai, Autonomous bottom-up fabrication of three-dimensional nano/microcellulose honeycomb structures, directed by bacterial nanobuilder, Journal of Bioscience and Bioengineering, 10.1016/j.jbiosc.2014.04.002, 118, 4, 482-487, 2014.10. |
| 19. |
Tetsuo Kondo, Daisuke Kumon, Akiko Mieno, Yutaro Tsujita, Ryota Kose, Preparaion and characterization of two types of separate collagen nanofibers with different widths using aqueous counter collision as a gentle top-down process, Materials Research Express, 10.1088/2053-1591/1/4/045016, 1, 1-16, 2014.10. |
| 20. |
Yohei Kawano, Tetsuo Kondo, Preparation of Aqueous Carbon Material Suspensions by Aqueous Counter Collision, Chemistry Letters, 10.1246/cl.131046, 43, 4, 483-485, 2014.04. |
| 21. |
Kunio Tsuboi, Shingo Yokota, Tetsuo Kondo, Difference between bamboo- and wood-derived cellulose nanofibers prepared by the aqueous counter collision method, Nordic Pulp & Paper Research Journal, 10.3183/NPPRJ-2014-29-01-p069-076, 29, 1, 69-76, 2014.02. |
| 22. |
Shintaro Matsuo, Akane Takenaga, Tomoko Seyama, Tetsuo Kondo, Secretion of a bundle of(1->3)-β-glucan hollow fibrils from protoplasts of callus suspension under a Ca2+-rich and acidic stressed condition, Holzforschung, 10.1515/hf-2013-0010, 68, 1, 69-73, 2014.01. |
| 23. |
Tetsuya Takahashi, Yoko Tsurunaga, Tetsuo Kondo, Fabrication of Highly Isotactic Polypropylene Fibers to Substitute Asbestos in Reinforced Cement Composites and Analysis of the Fiber Formation Mechanism, Journal of Applied Polymer Science, 10.1002/APP.39260, 130, 2, 981-988, 2013.10. |
| 24. |
Baoquan Jia, Yutao Li, Bin Yang, Di Xiao, Shengnan Zhang, A. Varada Rajulu, Tetsuo Kondo, Lina Zhang, Jinping Zhou, Effect of microcrystal cellulose and cellulose whisker on biocompatibility of cellulose-based electrospun scaffolds, Cellulose , 10.1007/s10570-013-9952-0, 20, 4, 1911-1923, 2013.08, To investigate the potential application of microcrystal cellulose (MCC) and cellulose whisker (CW) in the electorospun vascular tissue scaffolds,cellulose acetate (CA) and cellulose composite scaffolds containing MCC and CW were electrospun from CA solutions and deacetylation. Structure and morphology of MCC, CW and the fibrous composite scaffolds were inverstigated using FT-IR, SEM, TEM and AFM. The wettability of the scaffolds was evaluated by water contact angle analysis. The effect of MCC and CW on the biocompatibility of the scaffolds for vascular smooth muscle cells (VSMC) was assayed by MTT test, fluorescent imaging and SEM. The biocomposite scaffolds displayed multiscaled structure and morphology.
. |
| 25. |
Tomoko Seyama, Eun Young Suh, Tetsuo Kondo, Three-dimensional culture of epidermal cells on ordered cellulose scaffolds , Biofabrication , 10.1088/1758-5082/5/2/025010 , 5, 2, 5, 025010, 2013.06. |
| 26. |
Lingzhi Zhang, Chengcheng Zhao, Jinping Zhou, Tetsuo Kondo, Fluorescent micelles based on hydrophobically modified cationic cellulose for sensing trace explosives in aqueous solutions, Journal of Materials Chemistry C, 10.1039/c3tc30689e, 1, 36, 5756-5764, 2013.06, Amphiphilic cationic cellulose derivatives with different long alkyl chains as hydrophobic segments were synthesized. They can self-assemble into cationic micelles in distilled water. The structure and properties of the micelles were characterized by elemental analysis, FT-IR, 1H NMR, z-potential measurements, DLS, TEM, and fluorescence spectroscopy. The hydrophobic cores of the micelles were used to load a hydrophobic dye (4,7-bis[4-(1,2,2-triphenylvinyl)phenyl]benzo-2,1,3-thiadiazole, BTPETD) and exhibited a stable photoluminescence. The fluorescence emission can quantitatively and sensitively respond to 2,4-dinitrophenol (DNP) and picric acid (PA) due to the electron transfer between BTPETD and the explosives, and the limit of detection was 200 and 50 nM for DNP and PA, respectively. The novel hydrophobically modified cationic cellulose micelles have the potential to prepare feasible, sensitive and stable sensor systems for detecting explosives in aqueous solutions.. |
| 27. |
Ana Alonso-Simon, Antonio E. Encina, Tomoko Seyama, Tetsuo Kondo, Penelope Garcia-Angulo, Jesus M. Alvarez, Jose L. Acebes, Takahisa Hayashi, Purification and Characterization of a soluble β-1,4-glucan from bean (Phaseolus vulgaris L.)-cultured cells dehabituated to dichlobenil, Planta, 10.1007/s00425-013-1861-9, 237, 6, 1475-1482, 2013.06. |
| 28. |
Ryota Kose, Tetsuo Kondo, Size Effects of Cellulose Nanofibers for Enhancing the Crystallization of Poly (lactic acid), Journal of Applied Polymer Science, 10.1002/app.38308, 128, 2, 1200-1205, 2013.04. |
| 29. |
Jun You, Haoze Hu, Jinping Zhou, Lina Zhang, Yaping Zhang, Tetsuo Kondo, Novel Cellulose Polyampholyte−Gold Nanoparticles-Based Colorimetric Competition Assay for the Detection of Cysteine and Mercury(II), Langmuir, 10.1021/la3050913, 29, 16, 5085-5092, 2013.03. |
| 30. |
Takahashi, T.,Hoshino, T., Kondo, T., Imura, S., Kudoh, S. and Yoshino, K., Biosynthesis of Microbial Cellulose from the Antarctic Microorganisms, Journal of the Society of Electrical Materials Engineering, 21, 1, 5-10, 2012.12. |
| 31. |
Roubroeks, J. P. and Kondo, T., Nano- and microstructures in stretched and non-stretched blend gels of cellulose and hemicelluloses , Holzforschung, 10.1515/hf-2011-0136, 66, 8, 993-1000, 2012.12. |
| 32. |
Kondo, T., Kasai, W., Nojiri, M., Hishikawa, Y., Togawa, E., Romanovicz, D. and Brown R Malcolm, Jr., Regulated patterns of bacterial movements based on their secreted cellulose nanofibers interacting interfacially with ordered chitin templates, Journal of Bioscience and Bioengineering, 10.1016/j.jbiosc.2012.02.0202, 114, 1, 113-120, 2012.07. |
| 33. |
Takahashi T, Kondo T, Tanaka K, Hattori S, Irie S, Kudoh S, Imura S, Kanda H ：, Using collagen artificial skin to estimate the protection effects of UV-cut materials against sunlight under the Antarctic ozone hole, Polymer Degradation and Stability , 10.1016/j.polymdegradstab.2013.03.018, 97, 6, 1002-1009, 2012.06, Collagen sheets that simulate human skin were employed to study the protection effects of ultravioletcut
(UV-cut) films on the skin when the Antarctic ozone hole appeared. A collagen sheet was covered
with a polypropylene film containing zinc oxide and exposed outdoors in the Antarctic. Exposed sheets
were dissolved to determine total amino acid amounts. The results show that nearly 2.8 times as much
total amino acids were produced in collagen sheets exposed in spring, when the ozone hole appeared, as
those produced in collagen sheets exposed in autumn. However, total amino acids in a collagen sheet
covered by a film with a zinc oxide content of 0.40 v% decreased to nearly one-fourth the amount in
a collagen sheet covered with a zinc-free film, even during spring exposure. Furthermore, analysis shows
that total protein and terminal amino group concentration decreased substantially in extracts from
collagen sheets with increasing levels of zinc oxide in the film. In other words, the addition of zinc oxide
is confirmed to suppress collagen deterioration by UV light very effectively, even if exposure lasts 50 d in
spring, when the ozone hole appears. As described above, the collagen sheet method used for evaluation
could be used to quantify the protection effects of UV-cut film against high-energy UV light that reaches
the ground when the ozone hole appears.. |
| 34. |
Takahashi T, Kondo T, Tanaka K, Hattori S, Irie S, Kudoh S, Imura S, Kanda H ：, Measurement of solar UV radiation in Antarctica with collagen sheets, Photochemical & Photobiological Sciences, 10.1039/c2pp05365a, 11, 7, 1193-1200, 2012.06, Collagen sheets were used in a unique evaluation method to examine skin damage caused by ultraviolet
(UV) light of short wavelength during a season of the Antarctic ozone hole. The collagen sheets were
exposed outdoors for 25 and 50 d, in the spring when the ozone hole was formed and in the ozone-holefree
autumn. Extracts from the exposed collagen sheets were analyzed for total protein and terminal
amino acid concentrations as an index of collagen fragmentation. The results show that the amount of
extractable collagen and terminal amino acid concentration in the spring exposure were approximately
double and five times higher, respectively, when compared with those in the autumn exposure. During the
ozone hole occurrence, the terminal amino acid concentration of the extracted collagen was about five
times higher when exposure lasted 50 d from mid-September to the end of October compared to when
exposure lasted 25 d from mid-September to early October. This result could be attributed to a limited
amount of short-wavelength UV radiation reaching the ground surface as a result of the low height of the
sun in September, when the ozone hole occurred. In fact, UV radiation measurements taken at Syowa
Station indicate that short-wavelength UV radiation in the range 290–295 nm was not detected until
approximately 1–2 months after the beginning of the ozone hole occurrence.. |
| 35. |
Tetsuya Takahashi, Yoko Tsurunaga, Yuji Aso, Tetsuo Kondo, Sterilization of Spent Bathwater and Washed Fabrics by the Addition of Weakly Acidic Electrolyzed Water, Sen-i Gakkaishi, 68, 6, 149-155, 2012.06. |
| 36. |
Tetsuya Takahashi, Yoko Tsurunaga, Yuji Aso, Tetsuo Kondo, The Use of Weakly Acidic Spent Bathwater Mixed with Electrolyzed Water for Laundry, Sen-i Gakkaishi, 68, 6, 156-163, 2012.06. |
| 37. |
Seyama T, Kondo T：, Morphological responses of Betula protoplasts in fiber spinning , Holzforschung, 10.1515/HF.2011.158 , 66, 3, 407-411, 2012.03, In a previous study, the nematic ordered
cellulose (NOC) templates successfully induced
biodirected epitaxial nanodeposition of cellulose
nanofibers secreted by Gluconacetobacter xylinus
along the orientation of the molecular tracks (Kondo
et al. 2002). As an extended concept for the NOC, this
article attempts to propose a sort of biomimic mineralization
using the template. It combines morphologically
controlling process with synthesis of the
calcium phosphate as a major component of bones.
This process was initially mediated by the modified
NOC template having a pair of roles of the ion supply
sources and scaffolds for 3D-ordering architecture of
the calcium phosphate as a biomineral in the key
functions for biomineralization. The successful establishment
of such an ordered deposition of the
inorganic on the template was confirmed by several
surface characterizations such as atomic force microscopy,
X-ray photoelectron spectroscopy, scanning
electron microscopy, and so on. Moreover, similarly
to human bones, the obtained major assemble states of
the calcium phosphates exhibited amorphous. The
above process using the bifunctional cellulose template
can be considered as a biomimic mineralization,
which also opens pathways toward preparation of
potentially versatile organic–inorganic order-patterned
composites under a less energy consumption.. |
| 38. |
Higashi K, Kondo T :, Nematic ordered cellulose templates mediating order-patterned deposition accompanied with synthesis of calcium phosphates, Cellulose , 10.1007/s10570-011-9627-7, 19, 1, 81-90, 2012.02, In a previous study, the nematic ordered
cellulose (NOC) templates successfully induced
biodirected epitaxial nanodeposition of cellulose
nanofibers secreted by Gluconacetobacter xylinus
along the orientation of the molecular tracks (Kondo
et al. 2002). As an extended concept for the NOC, this
article attempts to propose a sort of biomimic mineralization
using the template. It combines morphologically
controlling process with synthesis of the
calcium phosphate as a major component of bones.
This process was initially mediated by the modified
NOC template having a pair of roles of the ion supply
sources and scaffolds for 3D-ordering architecture of
the calcium phosphate as a biomineral in the key
functions for biomineralization. The successful establishment
of such an ordered deposition of the
inorganic on the template was confirmed by several
surface characterizations such as atomic force microscopy,
X-ray photoelectron spectroscopy, scanning
electron microscopy, and so on. Moreover, similarly
to human bones, the obtained major assemble states of
the calcium phosphates exhibited amorphous. The
above process using the bifunctional cellulose template
can be considered as a biomimic mineralization,
which also opens pathways toward preparation of
potentially versatile organic–inorganic order-patterned
composites under a less energy consumption.. |
| 39. |
Takahashi T, Aso Y, Kasai W, Kondo T:
, Synergetic deodorant effect and antibacterial activity of composite paper containing waste tea leaves , Journal of Wood Science , 10.1007/s10086-010-1171-9, 57, 4, 308-316, 2011.08, Composite paper containing waste tea leaves was prepared to investigate the effective utilization of waste tea leaves as deodorant material. Paper containing waste green tea leaves did not have increased deodorizing ability compared with controls either against acidic odors such as hydrogen sulfide and acetic acid gases or against neutral odors such as formaldehyde and acetaldehyde gases. In contrast, the paper had excellent deodorizing ability against basic odors such as ammonia and trimethylamine gases. It was observed during additional tests conducted on paper samples containing 60 wt% waste leaves of oolong tea, black tea, pu-erh tea, or hojicha, that all the samples reduced the ammonia concentration to below 1 ppm, which is the threshold concentration for olfactory recognition, within 30 min. Further, paper containing waste green tea leaves was found to decrease the odor residual rate to 5.1% in 30 min even for a waste tea leaf content of 10 wt%. The excellent deodorizing ability of the paper could be attributed to the chemical reactions between odorous substances and the catechins found in tea leaves. After the deodorization of ammonia, paper containing waste green tea leaves was found to have increased antibacterial activity against Staphylococcus aureus. . |
| 40. |
Kose R, Kasai W, Kondo T :, Switching Surface Properties of Substrates by Coating with a Cellulose Nanofiber Having a High Adsorbability, SEN-I GAKKAISHI, 67, 7, 163-168, 2011.07. |
| 41. |
Kose R, Kondo T :, Favorable 3D-network Formation of Chitin Nanofibers Dispersed in Water Prepared Using Aqueous Counter Collision, SEN-I GAKKAISHI, 67, 4, 91-95, 2011.04. |
| 42. |
Kose,R., Mitani,I., Kasai, W. and Kondo,T., “Nanocellulose” As a Single Nanofiber Prepared from Pellicle Secreted by Gluconacetobacter xylinus Using Aqueous Counter Collision, Biomacromolecules, 10.1021/bm1013469, 12, 3, 716-720, 2011.03, This study attempted to prepare a single cellulose nanofiber, “nanocellulose”, dispersed in water from 3D networks of nanofibers in microbial cellulose pellicle using aqueous counter collision (ACC), which allows biobased materials to be down-sized into nano-objects only using water jets without chemical modification. The nanocellulose thus prepared exhibited unique morphological properties. In particular, the width of the nanocellulose, which could be controlled as desired on nanoscales, was smaller than that of just secreted cellulose nanofiber, resulting in larger specific surface areas. Moreover, ACC treatment transformed cellulose Iα crystalline phase into cellulose Iβ phase with the crystallinity kept >70%. In this way, ACC method depending on the treatment condition could provide the desired fiber width at the nanoscale and the different ratios of the two crystalline allomorphs between cellulose Iα versus Iβ, which thus opens further pathways into versatile applications as biodegradable single nanofibers.. |
| 43. |
Takahashi, T.,Aso,Y., Kasai, W. and Kondo,T., Improving the antibacterial activity against Staphylococcus aureus of composite sheets containing wasted tea leaves by roasting
, Jounal of Wood Science, 10.1007/s10086-010-1110-9, 56, 5, 403-410, 2010.10. |
| 44. |
Iswanto, A.H., Febrianto, F., Wahyudi, I., Hwang, W.J., Lee, S.H., Kwon, J.H., Kwon, S.M., Kim, N.H. and Kondo,T., Effect of Pre-treatment Techniques on Physical, Mechanical and Durability Properties of Oriented Strand Board Made from Sentang wood (Melia excelsa Jack), Journal of the Faculty of Agriculture Kyushu University, 55, 2, 371-377, 2010.10.  |
| 45. |
Takahashi, T., Kasai, W. and Kondo,T., Effects of Ultraviolet Radiation on the Color of Compounded Papers Containing Wasted Tea Leaves, SEN-I GAKKAISHI, 66, 10, 261-266, 2010.10. |
| 46. |
Hishikawa,Y., Togawa, E. and Kondo,T., Molecular orientation in the Nematic Ordered Cellulose film using polarized FTIR accompanied with a vapor-phase deuteration method, Cellulose, 10.1007/s10570-010-9410-1, 17, 3, 539-545, 2010.06, Previously, the authors reported “Nematic Ordered Cellulose (NOC)” that is a well-ordered state of β-1,4-glucan chains without exhibiting typical X-ray diffraction patterns of any cellulose polymorphs (Togawa and Kondo 1999; Kondo et al. 2001; Kondo 2007). The NOC was prepared by stretching water-swollen gel-like films at the draw ratio of 2.0 to provide highly oriented β-1,4-glucan molecular chains of cellulose, which was proved by the high resolution TEM observation. In this paper, a detailed study of the unique ordered state of the NOC was attempted to characterize orientation of the main chains as well as the OH groups of molecules using polarized FTIR accompanied with a vapor-phase deuteration method. The dichroic analysis suggested that the main chains were fairly oriented in the stretching direction whereas the OH groups remained unoriented. The disordered state of the OH groups regardless of the oriented state for the main chain may hinder the oriented crystallization during the preparation of NOC films.. |
| 47. |
Takahashi,T., Aso,Y.,Kasai,W. and Kondo,T., Effect of light irradiation on the antibacterial activity of compounded papers containing wasted tea leaves, Jounal of Wood Science, 10.1007/s10086-009-1103-8, 56, 4, 299-306, 2010.04, The endurance of the antibacterial properties of
compounded papers containing wasted green tea leaves
needs to be examined before considering these papers for
long-term use. Hence, compounded papers containing
60 wt% wasted green tea leaves were irradiated for 1–200 h
using a xenon lamp to examine the effect of irradiation on
antibacterial properties of the paper. Irradiation for 20 h
(cumulative ultraviolet dose at 365 nm, 6.67 × 106 J/m2) or
longer was found to greatly increase the antibacterial activity
of the paper to a level at which no bacterial cell was
confi rmed to be viable. The paper was also covered with
various glass fi lters and irradiated for 1 h. Irradiation exclusively
with visible rays did not signifi cantly affect the antibacterial
activity of the paper, whereas irradiation exclusively
with ultraviolet rays, even for a short time, greatly increased
the antibacterial activity.
. |
| 48. |
Hesse－Ertelt,S.,Heinze,T.,Togawa,E. and Kondo,T., Structure elucidation of uniformly 13C-labeled bacterial cellulose from different Gluconacetobacter xylinus strains , Cellulose, 10.1007/s10570-009-9355-4, 17, 1, 139-151, 2010.02. |
| 49. |
Kondo,T.,Yamamoto,M.,Kasai,W. and Morita,M., Synthesis and properties of regioselectively substituted cellulose cinnamates, ACS SYMPOSIUM SERIES, 1017, 231-241, 2010.02. |
| 50. |
Protection Effect for Collagen Artificial Skin of UV-cut Materials in Antarctica. |
| 51. |
Akabori,K.,Atarashi,H.,Ozawa,M., Kondo, T.,Nagamura,T. and Tanaka,K, Glass transition behavior of hyper-branched polystyrenes, Polymer, 10.1016/j.polymer.2009.08.029, 50, 20, 4868-4875, 2009.09. |
| 52. |
Preparation of Functional Nonwoven Fabric “KAMIKO” Utilizing Wasted Tea Leaves
. |
| 53. |
Dye Degradation Effect of Rayon Fibers Containing Titanium Oxide Photocatalyst. |
| 54. |
Koizumi, S., Tomita, Y., Kondo, T., and Hashimoto, T. , What Factors Determine Hierarchical Structure
of Microbial Cellulose -Interplay among
Physics, Chemistry and Biology-, Macromolecular Symposia, 279, 110-118, 279,110-118(2009), 2009.05. |
| 55. |
Tomita, Y., Kondo, T., Influential Factors to Enhance the Moving
Rate of Acetobacter xylinum Due to its
Nanofiber Secretion on Oriented Templates, Carbohydrate Polymers, 77, 754-759 (2009), 2009.04. |
| 56. |
Fabrication of Microbial Cellulose Nanofaiber Network Sheets Hydrophobically Enhanced by Introduction of a Heat-printed. |
| 57. |
Antibacterial Activity of Compounded Paper using Wasted Green Tealeaves Produced by Paper-making Method. |
| 58. |
Structure and Mechanical Properties of Papers Containing Ground Wasted Tealeaves. |
| 59. |
Hesse－Ertelt,S.,Witter,R.,Ulrich,A.,Kondo,T. and Heinze,T., Spectral assignments and anisotropy data of cellulose Iα:13C-NMR chemical shift data of cellulose Iα determined by INADEQUATE and RAI techniques applied to uniformly 13C-labeled bacterial celluloses of different Gluconacetobacter xylinus strains.,, Magn.Reson.Chem., 46, 1030-1036, 46,1030-1036(2008), 2008.09. |
| 60. |
Yuan Mao, Lina Zhang, Jie Cai, Jinping Zhou, Tetsuo Kondo, Effects of Coagulation Conditions on Properties of Multifilament Fibers Based on Dissolution of Cellulose in NaOH/Urea Aqueous Solution, Industrial & Engineering Chemistry Research, 10.1021/ie800833w, 47, 2, 8676-8683, 2008.09. |
| 61. |
Kondo, T., Koschella A., Heublein B., Klemm, D., Heinze, T., Hydrogen bond formation in regioselectively functionalized 3-mono-O-methyl cellulose, Carbohydr. Res. , 343,2600-2604(2008), 2008.08. |
| 62. |
Koizumi, S., Yue, Z., Tomita, Y., Kondo, T., Iwase, H., Yamaguchi, D.and Hashimoto, T., Bacterium Organizes Hierarchical Amorphous Structure in Microbial Cellulose, European Physics Journal E, 2008.05. |
| 63. |
Seyama, T., Kimura, S., Sasamoto, H., Abe, H., Kondo, T., Spinning of a gigantic bundle of hollow fibrils by a spirally moving higher plant protoplast, Planta, 227(6), 1187-1197 (2008), 2008.05. |
| 64. |
Kasai,W, Tsutsumi, K, Morita, M and Kondo, T., Orientation of the alkyl side chains and glucopyranose rings in Langmuir-Blodgett films of a regioselectively substituted cellulose ether, Colloid and Polymer Science, 286, 707-712 (2008), 2008.05. |
