@article{oai:soar-ir.repo.nii.ac.jp:00011003, author = {荒瀬, 輝夫 and 熊谷, 真由子 and 内田, 泰三}, journal = {信州大学農学部AFC報告}, month = {Mar}, note = {オヤマボクチ (Synurus pungens (Fr.et Sav.) Kitam.) の葉の繊維質は,地域独特のそば切りのつなぎとして伝統的に用いられている。本論文では,オヤマボクチの地域産物化のための第一歩として,オヤマボクチの葉から繊維を抽出する工程を試行し,収量を求めることとした。長野県中央アルプス周辺の自生地から2系統を選定し,2010年10月初旬に11枚ずつ生葉を採集した。葉はサイズを計測後,乾燥・秤量・粉砕し,熱湯で6時間茹でて繊維を抽出した。その結果,個葉の葉面積は平均190~340cm2で変異が大きかった。100 cm2あたり,葉の乾物重0.242~0.291g ,繊維収量0.044~0.052g でともに系統間差が有意であり,葉の乾物重に対する繊維の収率は2系統ともおよそ18%であった。つなぎ用の繊維抽出には大量の葉が必要であることが確かめられたので,地域産物化と自生地保全のためにはオヤマボクチの栽培化が望まれる。Fibers extracted from oyama-bokuchi (Synurus pungens (Fr. et Sav.) Kitam.) leaves have traditionally been used as a thickening agent for making buckwheat noodles. We extracted fibers from oyama -bokuchi leaves to assess the potential application of this plant for developing a regional food product. Samples of two oyama-bokuchi populations were collected in the Chuo-Alps mountain range in Nagano Prefecture. Eleven fresh leaves were collected from each populations early in October of 2010. After measuring the size of the leaves, the leaves were dried, weighed and cut into thin strips, before being boiled in water for six hours to extract the fiber. The leaf area of both populations ranged from 190 to 340 cm2 Dry leaf weight and extracted fiber weight (per 100 cm2 leaf) ranged from 0.242 to 0.291 g and 0.044 to 0.052 g, respectively, with significant differences observed between the two populations. The fiber yield from the dry leaf matter obtained from both populations was approximately 18%. Since large amounts of oyama-bokuchi leaves were required for fiber extraction, cultivation of this plant is considered necessary for both the development of regional food products and conservation of wild habitats., Article, 信州大学農学部AFC報告 9: 33-38(2011)}, pages = {33--38}, title = {そば切りのつなぎとしてのオヤマボクチ (Synurus pungens (Fr. et Sav.) Kitam.) の葉の繊維収量}, volume = {9}, year = {2011} }