J. Technology and Education, Vol.23, No.1, pp.13-30 (2016)

研究論文

ダイズ（Glycine max）種子に対する宇宙微小重力下での保管の影響

 

古川 一実、押川 達夫、竹口 昌之、蓮実 文彦、後藤 孝信、

藁科 知之、山根 説子、芳野 恭士*

沼津工業高等専門学校　物質工学科（〒410-8501　沼津市大岡3600）

*k-yoshino@numazu-ct.ac.jp

 

Effect of Storage under Microgravity Conditions in Space

on Soybean (Glycine max) Seeds

 

Kazumi FURUKAWA, Tatsuo OSHIKAWA, Masayuki TAKEGUCHI, Fumihiko HASUMI,

Tomoyuki WARASHINA, Setsuko YAMANE, Kyoji YOSHINO

National Institute of Technology, Numazu College (3600 Ooka, Numazu, Shizuoka 410-8501, Japan)

 

(Received January 20, 2016; Accepted February 25, 2016)

 

Abstract

We examined the influence of storage under microgravity in space for two weeks on Haizu, a soybean native to Shizuoka. No difference was seen in germination rates, appearance of the plants, or rhizobial colonies between space-stored Haizu (SSH), earth-stored Haizu (ESH), and some commercial soybeans of the first, second, third, or fourth generation. Similarly, remarkable differences between these soybeans were not seen in the carbohydrate content, relative ratio of sucrose and stachyose, lipid content, lipid composition, fatty acid composition, protein content, molecular weight distribution of proteins, the types of major proteins and their contents, or the chemical structures of isoflavone and saponins, etc. Changes were not observed in the location of methylation and mutation of the endogenous specific sequence in the gene of SSH, ESH, and some commercial soybeans of the second generation. These results suggest that the storage of soybeans under microgravity in space did not affect growth, nutrients, or the gene. In addition, we found abilities of some utilizations of Haizu and its components, such as the production of soybean curd, biodiesel fuel, anhydro sugar, and 5-(hydroxymethyl)-2-furaldehyde.

Keywords: Soybean, Microgravity in space, Nutrients, Biomass