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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 18号
  1. 部局別インデックス
  2. 農学部

茶に関する研究(第 3 報) : レーベンタールタンニン定量法の検討(農芸化学科)

http://hdl.handle.net/20.500.12000/4487
http://hdl.handle.net/20.500.12000/4487
1c91e279-7df4-4d37-bab0-769653c110f1
名前 / ファイル ライセンス アクション
KJ00000162367.pdf KJ00000162367.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 茶に関する研究(第 3 報) : レーベンタールタンニン定量法の検討(農芸化学科)
言語 ja
作成者 仲村, 実久

× 仲村, 実久

ja 仲村, 実久

Nakamura, Sanehisa

× Nakamura, Sanehisa

en Nakamura, Sanehisa

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 (1)タンニンのレーベンタール法による定量で過マンガン酸カリ標準液の添加速度およびマグネチックスタラーによる攪拌速度が同標準液消費量におよぼす影きょうを統計的方法により検討した。(2)添加時間間隔は分散分析の結果5%水準で有意であった。添加容量および1mℓ添加法は有意の差はなかった。(3)添加時間間隔は5秒が最も良好と推定されたが, 10秒における攪拌速度を異にするデータを推定してマグネチックスタラーの速度をFastにすれば5秒のときと同程度の分散が得られたので, 添加容量5mℓ, 添加間隔10秒, 攪拌速度Fastの条件で定量を行う滴定法を提唱する。(4)上記方法で荒茶のタンニン含量を測定したら分析の精度は平均値に対して±7%程度のふれがあった。
内容記述タイプ Other
内容記述 (1) The effect of stirning rate and the quantity of the potassium permanganate standard solution being added on the amount of consumption of the standard solution in the Lowenthal method for determination of tea tannin was evaluated by statistical methods. (2) The analysis of variance for the intervals of titrant addition showedsignificantat a level of 5%. The quantities of the titrant being added at a time and a method of 1ml addition were notsignificant. (3) An addition interval of 5 sec. gave the least variance and the variances of similar grade with 5 sec. were achieved, according to the evaluation of the data of various mixing velocities at 10 sec., if the velocity of the magnetic stirrer was atFast. Therefore, the titration using an addition quantity of 5 ml at a time, an addition interval of 10 sec., and a mixing velocity ofFastwas recommended. (4) Tannin contents in the tea used in the present experiments were determined by the above mentioned method. And the precision of analysis was about ± 7%.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/4487
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 18, p. 66-72
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