著者

水野 卓 加藤 国吉 藤田 隆敏 金兵 忠雄

出版者

静岡大学

雑誌

靜岡大學農學部研究報告 (ISSN:05598850)

巻号頁・発行日

vol.10, pp.103-107, 1960

著者

水野 卓 金兵 忠雄

出版者

公益社団法人 日本農芸化学会

雑誌

日本農芸化学会誌 (ISSN:00021407)

巻号頁・発行日

vol.30, no.4, pp.206-209, 1956 (Released:2008-11-21)

参考文献数

5

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The carbohydrates in the petals of Camellia japonica L., camellia, were studied (see Table 2). The following results were obtained. Glucose, fructose, sucrose, maltose, and two unknown spots were detected as the free sugars. Galactose, glucose, rhamnose, arabinose, ribose, fructose, mannose, galacturonic acid (?) and mannuronic acid (?) were detected as the components of glycosides. Glucose, galactose, arabinose, fructose and galacturonic acid were found to be the component sugars of hot ethanol-soluble polysaccharides. Arabinose, galacturonic acid, glucose and galactose as the components of the cold water-soluble polysaccharides, and more, arabinose, ribose, glucose and galacturonic acid were found as those of hot water-soluble polysaccharides, respectively. Arabinose galactose and galacturonic acid were those of the protopectin fraction (hot 0.5% ammonium oxalate aq.-soluble polysaccharides). Xylose, rhamnose, arabinose, ribose, mannose, galactose, galacturonic acid, glucuronic acid, glucose and desoxyribose were the components of hemicellulose. α-Cellulose and a small amount of lignin were found as usual.

著者

水野 卓 金兵 忠雄

出版者

Japanese Society of Tea Science and Technology

雑誌

茶業研究報告 (ISSN:03666190)

巻号頁・発行日

vol.1964, no.21, pp.77-85, 1964-01-25 (Released:2009-07-31)

参考文献数

9

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The leaf-starch was isolated as the form of iodine-starch complex from tea extracted with hot 30% calcium chloride solution, the yield of purified starch being ca. 1 % (45.8g. starch' from 4.5kg. of fresh leaf).Amylose, amylopectin and their middle fraction in tea leaf-starch were then fractionated principally by Schoch's method using n-butanolwater (1 : 7 by volume).The peaks of visible absorption spectra, Xln ol, of their iodine-potassium iodide solution were 600 mlt in leaf-starch, 620 mit in amylose, 551 m, a in amylopectin, and 605 ma in middle fraction respectivly.Moreover, the relations of the concentration of their solution to the optical density (E) at λmax HCLO4 were investigated to make clear the fundamental items about the fractional quantitative analysis of amylose, amylopectin and middle fraction in the tea leaf-starch.The following relationships were obtained. Starch (mg.)=0.0973 E-0.0012 Amylose (mg.)=0.0597 E-0.0005 Amylopectin (mg.)=0.4527 E-0.0044 Middle fraction (mg.)=0.1452 E-0.0030The quantitative determination of starch in the tea leaves, and the fractional determinations of amylose, amylopectin and middle fraction of the tea leaf-starch have been developed, the main procedure being as follows: