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The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus >
No.28 (1981/11) >

 
Title :植物染料に関する研究(第 1 報) : ヤマモモの染色性について(林学科)
Title alternative :Studies on Plant Pigments (1) : Dyeing properties of Myrica rubra S. & Z. (Department of Forestry)
Authors :屋我, 嗣良
内山, 義範
仲宗根, 平男
Authors alternative :Yaga, Shiryo
Uchiyama, Yoshinori
Nakasone, Hirao
Issue Date :30-Nov-1981
Abstract :琉球織物におけるヤマモモの染色性について検討し次の結果を得た。1)ヤマモモ樹皮の熱水抽出物は約36%で, そのうち約31%がミリシトリンで示された。また樹皮の約3%がタンニンであった。熱水抽出物をセロハンで透析して得られる透析部と非透析部において, 非透析部の方に若干染料が多かった。2)素材に絹布および木綿布を用いて染色条件を検討した。その結果, 最適染色条件はいづれの布でも染料濃度が15%, 染色温度が100℃および染色時間は90分であった。3)両布を黄金色に染色するには, 最適染色条件で染色した両布を硫酸銅やカリ明バンで媒染し, その際の媒染剤濃度は50ppmが適当であった。また黒褐色に染色するには, 最適染色条件で染色した両布を鉄塩または泥で媒染し, 媒染剤濃度は鉄塩で50ppm, 泥で10ppmが適当と考えられた。4)染色堅ろう度のうち最も重要な日光堅ろう度および洗濯堅ろう度について検討した。両布を最適染色条件で染色し, 硫酸銅およびカリ明バンで媒染した。その結果日光堅ろう度および洗濯堅ろう度も, 重ね染(染色-媒染をくり返す)の回数と比例し, いづれも重ね染5回以上で安定した。本研究をすすめるために, 終始ご指導ご助言をいただきました九州大学近藤民雄教授に深く感謝いたします。樹種の鑑定をいただきました本学諸見里秀宰教授, 新里孝和助手, またUV測定などにご協力いただいた本学本郷富士弥助教授に感謝いたします。
The dyeing properties of Yamamomo bark, Myrica rubra S. & Z., for silk and cotton cloth, traditionally used in making Ryukyuan textiles, were examined. The results obtained are summarized as follows. 1. Hot water extracts of the Yamamomo bark contained about thirty six percent of which myricitrin constituted thirty one percent. Amount of tannin was about three percent of the bark. The hot water extracts of the bark were dialyzed overnight at 7℃ against water with seamless cellulose tubing. The undialyzed fraction contained more dye than the dialyzed fraction. 2. The conditions of dyeing were determined for silk and cotton cloth. The optimum concentration of dye was fifteen percent, the optimum dyeing temperature was 100℃ and the optimum dyeing time was 90min. 3. Both cloths which were dyed with the extracts were mordanted to golden yellow with cupric sulfate and aluminium potassium. The optimum concentration of the mordant was fifty ppm. On the other hand, both cloths dyed were mordanted to a brownish black with ferous and ferric salts and soil. The optimum concentraction of the ferous and ferric salts was fifty ppm and the optimum concentration of the soil was ten ppm. 4. The most important types of color fastness in dyeing, in exposure to daylight and washing, were examined for silk and cotton cloth. Both cloths dyed were mordanted with cupric sulfate and aluminium potassium. These types of color fastness were directly proportional to the times of repeating the dye and kept constant at five times or more.
Type Local :紀要論文
ISSN :0370-4246
Publisher :琉球大学農学部
URI :http://hdl.handle.net/20.500.12000/4070
Citation :琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.28 p.255 -263
Appears in Collections:No.28 (1981/11)

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