Soil experiment was conducted to investigate the impact of fluoride on yield of young shoots and chemical ingredients related with tea quality. Production of young shoots was improved by modest increase in the soil fluoride levels while significantly decreased by higher F levels. The concentrations of total polyphenols, caffeine and catechins (EGCG, etc) were reduced by fluoride application. The concentrations of total free amino acid and some major components (theanine, glutamate and glutamine) in the young shoots were also decreased significantly by the highest F application. Activity of phenylalanine ammonia-lyase (PAL) and glutamate synthase (GOGAT) decreased with increasing fluoride levels. The results indicated that, though tea plant growth was improved by low level of fluoride, high levels of this element were detrimental to both growth and metabolism of chemical components such as catechins, caffeine and free amino acids.
LI Qiong
,
RUAN Jian-yun
. Effects of Fluoride on the Metabolism of Tea Quality Components[J]. Journal of Tea Science, 2009
, 29(3)
: 207
-211
.
DOI: 10.13305/j.cnki.jts.2009.3.005
[1] Rao GS.Dietary intake and bioavailability of fluoride[J]. Annual Review of Nutrition, 1984, 4: 115~136.
[2] Fung KF, Zhang ZQ, Wong JWC, et at. Fluoride contents in tea and soil from tea plantations and the release of fluoride into tea liquor during infusion[J]. Environmental Pollution 1999, 104: 197~205.
[3] 白学信, 方进良, 吴金生, 等. 饮茶型氟中毒的氟骨症调查[J]. 地方病通报, 1994(9): 65~66.
[4] 曹进, 赵燕, 列箭卫, 等. 西藏高海拔地区儿童的砖茶型氟中毒[J]. 中国公共卫生, 2000, 16(2): 174~175.
[5] Miller GW.The effect of fluoride on higher plants: with special emphasis on early physiological and biochemical disorders[J]. Fluoride, 1993, 26: 3~22.
[6] Davison AW, Takmaz-Nisanciolu S, Bailey IF.The dynamics of fluoride accumulation by vegetation. In: Susheela AK, ed. Fluoride toxicity. New Dehli: International Society for Fluoride Research, 1985. 0~46.
[7] Ruan J, Wong MH.Accumulation of fluoride and aluminium related to different varieties of tea plant[J]. Environmental Geochemistry Health, 2001, 23: 53~63.
[8] 王小平, 刘鹏, 罗虹, 等. 氟铝交互处理对茶叶品质的影响[J]. 茶叶科学, 2009, 29(1): 9~14.
[9] 王新超, 杨亚军, 陈亮. 茶树谷氨酸合酶的提取与活性测定[J]. 中国茶叶, 2004, 5: 10~11.
[10] Edwards R, Kessmann H.Isoflavonoid phytoalexins and their biosynthetic enzymes. In: Gurr S J, ed. Molecular Plant Pathology. Volume II A Practical Approach. McPherson M J and Bowles D J. Oxford University Press, Oxford. 1992: 45~62.
[11] Ruan JY, Gerendás J, Härdter R, et al. Effect of nitrogen form and root-zone pH on growth and nitrogen uptake of tea (Camellia sinensis) plants[J]. Annals of Botany, 2007, 99(2): 301~310.
[12] 钟萝. 茶叶品质理化分析[M]. 上海科学技术出版社, 1989: 258, 333.
[13] Waters公司. AccQ–Tag氨基酸分析方法[M]. Milford, MA, USA.
[14] 于海宁, 沈生荣, 臧荣春, 等. 多酚中儿茶素类的HPLC分析方法学考察[J]. 茶叶科学, 2001, 21(1): 61~64.
[15] 石元值, 杨亦扬, 阮建云, 等. 用离子色谱法同时测定茶叶中的F-、Cl-、SO42-、NO3-[J]. 食品科学, 2008, 29(3): 383~385.
[16] 宛晓春. 茶叶生物化学(第三版)[M]. 北京: 中国农业出版社, 2003.
浙公网安备 33019902000101号