Adjustment of the Analytical Values of Chemical Components of Tea Leaves by their Maturity and the Optimal Sample Size
スポンサーリンク
概要
- 論文の詳細を見る
The tea leaves have been sampled during the rapid-growing period of the shoots. A slight difference of harvesting time had susceptible influence on the maturity of the leaves, as well as on their physical and chemical properties. As it is verey difficult to decide the best plucking time technically, the calculation of chemical constituents in the tea leaves is not available unless the maturity of the leaves is adjusted to a standard level. Then, the relation between the chemical constituents (tannin and total nitrogen) and the maturity of the leaves (indicated by the ratio of the bhanji shoot) was researched by a uniformity trial of sampling of the variety "Tamamidori" on the tea garden.<BR>In regard to the chemical constituents, no adjustment by the maturity of leaves was necessary for total nitrogen, as far as these surveys were concerned, but it is easily presumed that some adjustment to this constituent would be required if the sampling conditions would be varied. Whereas, an adjustment by the maturity of the leaves was necessary for tannin, even in the case.of these samples having such a narrow range of maturity.<BR>For the most reasonable tannin value, the data were adjusted by the maturity of the leaves at the best plucking time and the confident limits of the adjusted values were also calculated.<BR>The sample size for obtaining a balanced sampling to the accuracy of the chemical determination of tannin and total nitrogen was calculated; it was found to be satisfied with 10 samples when the maturity of the sample did not exceed so far from that of the leaves at the best plucking time.
- 日本茶業技術協会の論文
著者
関連論文
- 茶葉炭水化物に関する研究 : (第1報)ペーパークロマトグラフによる糖類の検索
- 茶の保健性成分
- カフェイン定量法の研究 (第3報) : 茶葉カフェインの微量定量法
- Paper-Chromatographic Method of Tea Catechins
- 茶葉化学分析用試料の形態について
- 茶業災水化物に関する研究-2-
- Adjustment of the Analytical Values of Chemical Components of Tea Leaves by their Maturity and the Optimal Sample Size
- Overlooking in the Study of Tea
- Free Oligosaccharides in the Tea Plant
- Estimation of Debiraki-Day of Tea Shoot
- Growth Promoting Effect of Gibberellin upon the Tea Shoot (Continued)
- Preliminary Surveys on the Diagnosis of Tea Plant by the Foliar Analysis
- The Influence of Light upon the Chemical Constituents of Tea Seedling
- A Consideration upon the Adjustment of Yield of Tea Leaves:With Special Reference to the Maturity of Leaves
- Growth Promoting Effect of Gibberellin upon the Tea Shoot
- Chemical Difference of the Tea Leaves between Spring and Summer Crops