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Kumada, Takayuki
Hamon, 36(2), p.62 - 65, 2026/05
no abstracts in English
Iwase, Hiroki*; Arima-Osonoi, Hiroshi*; Harada, Masashi*; Kumada, Takayuki
Hamon, 36(2), p.84 - 88, 2026/05
no abstracts in English
Noda, Yohei*; Kumada, Takayuki; 7 of others*
Journal of Applied Crystallography, 59(2), p.492 - 512, 2026/04
Times Cited Count：0 Percentile：0.00(Chemistry, Multidisciplinary)Kumada, Takayuki; Nakabe, Rintaro; Nakagawa, Hiroshi
Teion Kagaku, 84, p.13 - 17, 2026/03
Hiroi, Kosuke; Nakabe, Rintaro; Oku, Takayuki; Kumada, Takayuki; Motokawa, Ryuhei
Journal of Applied Crystallography, 59(1), p.69 - 79, 2026/02
Times Cited Count：0 Percentile：0.00(Chemistry, Multidisciplinary)Shibata, Motoki*; Takenaka, Mikihito*; Motokawa, Ryuhei; Kumada, Takayuki; Ueda, Yuki; Miyazaki, Tsukasa*; Nakanishi, Yohei*; Abe, Jun*; Iwase, Hiroki*; Shibayama, Mitsuhiro*; et al.
Polymer, 340, p.129203_1 - 129203_7, 2025/12
Times Cited Count：0 Percentile：0.00(Polymer Science)Nakagawa, Hiroshi; Hirata, Yoshinobu; Kumada, Takayuki
Shiki, 69, p.5 - 9, 2025/12
The physical properties of food, such as texture, shelf life, and stability, are determined by a hierarchical structure from molecular-scale interactions within food ingredients to macroscopic tissue structures. Elucidating the relationship between microstructure and macroscopic properties is a key theme in food science. In recent years, the perspective of viewing food as soft matter has gained traction. Consequently, numerous studies aim to establish a unified framework for understanding the structural properties of food, which share commonalities with gels, colloids, liquid crystals, and amorphous materials, across scales from molecular and nanoscale to millimeter scale. We introduce the latest findings in structural food science research linking molecular structures to macroscopic properties, focusing primarily on studies utilizing neutron scattering. It also covers the physicochemical states of food materials that control food properties such as water content and amorphous states within foods, alongside cutting-edge analytical techniques.
Yoshida, Misato*; Arai, Kengo*; Nakagawa, Daiki*; Horikawa, Yoshiki*; Iwase, Hiroki*; Kumada, Takayuki; Motokawa, Ryuhei; Shikata, Toshiyuki*
Biomacromolecules, 26(11), p.8332 - 8342, 2025/11
Times Cited Count：1 Percentile：38.91(Biochemistry & Molecular Biology)Kumada, Takayuki
For the Future of Hydrogen Science and Technology, 3(1), p.2 - 6, 2025/10
-butadiene) reinforced by carbon blackWatanabe, Yuki*; Kumagawa, Daiki*; Karitani, Shu*; Inoue, Tadashi*; Iwabuki, Hitoshi*; Nakanishi, Yohei*; Shibata, Motoki*; Motokawa, Ryuhei; Sugita, Tsuyoshi; Ueda, Yuki; et al.
Macromolecules, 58(16), p.8641 - 8648, 2025/08
Times Cited Count：0 Percentile：0.00(Polymer Science)Iwase, Hiroki*; Arima, Hiroshi*; Harada, Masashi*; Kumada, Takayuki
Chemical Engineering Journal, 510, p.161321_1 - 161321_11, 2025/04
Times Cited Count：2 Percentile：43.02(Engineering, Environmental)Kumada, Takayuki; Iwahara, Daisuke*
Isotope News, (798), p.26 - 27, 2025/04
no abstracts in English
Hirata, Yoshinobu*; Kaneko, Fumitoshi*; Radulescu, A.*; Nishizu, Takahisa*; Katsuno, Nakako*; Imaizumi, Teppei*; Motokawa, Ryuhei; Kumada, Takayuki; Nakagawa, Hiroshi
Journal of Applied Glycoscience, 72(1), p.7201102_1 - 7201102_9, 2025/02
A simultaneous measurement system of SANS/FTIR-ATR was applied to record multiple structural changes in potato starch during retrogradation. In the SANS patterns, the shoulder-like peak becomes more pronounced with time. The peak intensity, Imax, which represents the amount of orderly arranged double helical structures, increased over time, showing that starch reassembled orderly on the nanoscale upon retrogradation. In the FTIR-ATR spectra, the increase of the ratio of absorptions at 1042 cm
and 1016 cm, indicating the amount of short-range ordered structure in starch increased during retrogradation. The time to obtain half of the equilibrium value for 
was larger than that for Imax. Changes in the short-range ordered structure of starch were observed to converge prior to changes in the nanostructure. These results indicate that the double-helix structures are initially formed by amylopectin side chains, and then these double-helical structures are arranged orderly.
Kumada, Takayuki
Shiki, 63, p.2 - 5, 2024/07
We introduce recent studies of spin-contrast-variation neutron scatterings, which utilizes the property that scattering power of neutron against proton remarkably depends on their relative spin directions, to reveal nanostructure of composite materials.
Kumada, Takayuki; Motokawa, Ryuhei; Iwase, Hiroki*
Journal of Applied Crystallography, 57(Part 3), p.728 - 733, 2024/06
Times Cited Count：12 Percentile：93.80(Chemistry, Multidisciplinary)Nakanishi, Yohei*; Shibata, Motoki*; Sawada, Satoshi*; Kondo, Hiroaki*; Motokawa, Ryuhei; Kumada, Takayuki; Yamamoto, Katsuhiro*; Mita, Kazuki*; Miyazaki, Tsukasa*; Takenaka, Mikihito*
Polymer, 306, p.127209_1 - 127209_7, 2024/06
Times Cited Count：9 Percentile：65.72(Polymer Science)Kumada, Takayuki; Nakagawa, Hiroshi; Miura, Daisuke; Sekine, Yurina; Motokawa, Ryuhei; Hiroi, Kosuke; Inamura, Yasuhiro; Oku, Takayuki; Oishi, Kazuki*; Morikawa, Toshiaki*; et al.
Hamon, 34(2), p.50 - 53, 2024/05
Spin-contrast-variation (SCV) small-angle neutron scattering (SANS) enabled us to determine structure of nano-ice crystals that were generated in rapidly frozen sugar solution. In the frozen glucose solution, we found that the nano-ice crystals formed a planar structure with a radius larger than several tens of nanometers and a thickness of 2-3 nm, which was close to the critical nucleation size of ice crystals in supercooled water. This result suggests that the glucose molecules were preferentially bound to a specific face of nano-ice crystals, and then blocked the crystal growth perpendicular to that face.
Kumada, Takayuki; Iwahara, Daisuke*; Nishitsuji, Shotaro*; Akutsu, Kazuhiro*; Miura, Daisuke; Motokawa, Ryuhei; Sugita, Tsuyoshi; Torikai, Naoya*; Amino, Naoya*; Oku, Takayuki; et al.
Journal of Physical Chemistry C, 128(21), p.8797 - 8802, 2024/05
Times Cited Count：6 Percentile：42.42(Chemistry, Physical)We elucidated the entanglement of polybutadiene and silane coupling agent (SCA) molecules bound to Si substrates using spin-contrast-variation (SCV) neutron reflectivity (NR). In an annealed integral blend film of polybutadiene and SCA, a SCA layer generated on the Si substrate was composed of 70 vol. percent SCA molecules extended perpendicularly from the silicon substrate and entangled with 30 vol. percent polybutadiene molecules. By contrast, in an SCA-precoated polybutadiene film, the SCA-precoated layer is composed of densely packed SCA molecules forming crystal-like structure, and thus did not become entangled with the postcoated polybutadiene molecules. This poor entanglement resulted in poor binding between polybutadiene and Si substrate.
Kaneko, Koji; Tabata, Chihiro; Hagihara, Masato; Yamauchi, Hiroki; Oba, Yojiro; Kumada, Takayuki; Kubota, Masato; Kojima, Yuki*; Nabatame, Nozomi; Sasaki, Miki; et al.
JPS Conference Proceedings (Internet), 41, p.011015_1 - 011015_6, 2024/03
