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journal article·2019-02-11Open access

Very Low Nucleation Rates of Glucose Isomerase Crystals under Microgravity in the International Space Station

Yoshihisa Suzuki, Takahisa Fujiwara, Katsuo Tsukamoto, Seijiro Fukuyama, Taro Shimaoka, Kazuma Tsuchiya, Ai Ninomiya, Yumiko Murakumo, Akiho Ikeuchi, Hitomi Minamizono, Tomokazu Yamazaki, Takehiko Sone, Tetsuya Sakashita, Masae Nagai, Yasutomo Arai

Crystals· Volume 9· Issue 2
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Source abstract

Abstract

In situ observation of the nucleation and growth of glucose isomerase (GI) crystals under microgravity was conducted using an optical microscope during the first flight of the Advanced Nano Step project undertaken in the International Space Station (ISS). Very low apparent nucleation rates (J’) of GI crystals in the solution and on the substrate of the growth container were confirmed compared with those on the ground. In particular, J’ of GI crystals in the solution were a few times lower than that on the substrate. The growth rates (R) of the {101} faces of GI crystals on the substrate and the apparent growth rates (R’) in the solution were measured. The very low nucleation rates allowed us to successfully measure R at a very high supersaturation region (up to ln(C/Ce) = 6), at which R cannot be measured on the ground.
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Research context

OpenAlex topics: Crystallization and Solubility Studies · Calcium Carbonate Crystallization and Inhibition · Freezing and Crystallization Processes

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Graduate School of Technology, Industrial and Social Sciences, Tokushima University, 2-1 Minamijosanjima, Tokushima 770-8506, Japan

Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan

School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan

Advanced Engineering Services Co., Ltd., 1-6-1 Takezono, Tsukuba, Ibaraki 305-0032, Japan

Japan Space Forum, 3-2-1 Kandasurugadai, Chiyoda-ku, Tokyo 101-0062, Japan

Graduate School of Advanced Technology and Science, Tokushima University, 2-1 Minamijosanjima, Tokushima 770-8506, Japan

Faculty of Engineering, Tokushima University, 2-1 Minamijosanjima, Tokushima 770-8506, Japan

Japan Manned Space Systems Corporation, 2-1-6 Sengen, Tsukuba, Ibaraki 305-0047, Japan

Japan Aerospace Exploration Agency (JAXA), 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan

Funding

Japan Society for the Promotion of Science

References (10)

Show source-provided references
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