茶叶科学
茶葉科學
다협과학
2014年
6期
565-571
,共7页
胡琳玲%刘遵莹%刘秋玲%丰金玉%龙金花%肖文军
鬍琳玲%劉遵瑩%劉鞦玲%豐金玉%龍金花%肖文軍
호림령%류준형%류추령%봉금옥%룡금화%초문군
茶鲜叶%多环芳烃类化合物%分布特性
茶鮮葉%多環芳烴類化閤物%分佈特性
다선협%다배방경류화합물%분포특성
fresh tea leaves%compounds of polycyclic aromatic hydrocarbon%distribution characteristics
利用高效液相色谱法分析了不同季节、不同茶树品种、不同部位茶鲜叶中16种多环芳烃(PAHs)的分布特性。结果表明,3个茶树品种,以政和大白茶鲜叶原料中PAHs的含量和标准偏差值最小,平均含量为126.92μg·kg-1,偏差值为17.59μg·kg-1;不同部位茶鲜叶中PAHs含量及标准偏差值表现为芽<第二叶<第四叶<第六叶,芽头 PAHs含量为119.13μg·kg-1,标准偏差值为14.36μg·kg-1;不同季节茶鲜叶中 PAHs含量及标准偏差值呈现秋<春<夏的分布特性,秋季茶鲜叶中PAHs的含量为112.75μg·kg-1,标准偏差值为11.97μg·kg-1;同时茶鲜叶中16种PAHs主要以2、3环PAHs为主,占PAHs总量的80%左右,4~6环PAHs相对较少。
利用高效液相色譜法分析瞭不同季節、不同茶樹品種、不同部位茶鮮葉中16種多環芳烴(PAHs)的分佈特性。結果錶明,3箇茶樹品種,以政和大白茶鮮葉原料中PAHs的含量和標準偏差值最小,平均含量為126.92μg·kg-1,偏差值為17.59μg·kg-1;不同部位茶鮮葉中PAHs含量及標準偏差值錶現為芽<第二葉<第四葉<第六葉,芽頭 PAHs含量為119.13μg·kg-1,標準偏差值為14.36μg·kg-1;不同季節茶鮮葉中 PAHs含量及標準偏差值呈現鞦<春<夏的分佈特性,鞦季茶鮮葉中PAHs的含量為112.75μg·kg-1,標準偏差值為11.97μg·kg-1;同時茶鮮葉中16種PAHs主要以2、3環PAHs為主,佔PAHs總量的80%左右,4~6環PAHs相對較少。
이용고효액상색보법분석료불동계절、불동다수품충、불동부위다선협중16충다배방경(PAHs)적분포특성。결과표명,3개다수품충,이정화대백다선협원료중PAHs적함량화표준편차치최소,평균함량위126.92μg·kg-1,편차치위17.59μg·kg-1;불동부위다선협중PAHs함량급표준편차치표현위아<제이협<제사협<제륙협,아두 PAHs함량위119.13μg·kg-1,표준편차치위14.36μg·kg-1;불동계절다선협중 PAHs함량급표준편차치정현추<춘<하적분포특성,추계다선협중PAHs적함량위112.75μg·kg-1,표준편차치위11.97μg·kg-1;동시다선협중16충PAHs주요이2、3배PAHs위주,점PAHs총량적80%좌우,4~6배PAHs상대교소。
The distribution characteristics of 16 Polycyclic Aromatic Hydrocarbon(PAHs) in different fresh tea leaves of different tea cultivars in different seasons were analyzed by using HPLC. R esults showed that Zhenghedabaicha has lowest concentration of 16 PAHs and lowest standard deviation between Zhenghedabai, Taoyuandaye and Xiangfeicui, the average content is 126.92μg·kg-1, the standard deviation is 17.59 μg·kg-1, the concentration of 16 PAHs and standard deviation in different part of tea leaves is expressed as:the bud<the second leaf<the fourth leaf<the sixth leaf, the PAHs′ concentration in bud is 119.13μg·kg-1, standard deviation is 14.36μg·kg-1. The concentration of 16 PAHs in different seasons is expressed as autumn<spring<summer in one year. The concentration of PAHs in autumn is 112.75μg·kg-1, standard deviation is 11.97 μg·kg-1, 16 PAHs in fresh tea leaves are mainly composed of 2, 3 rings, account for about 80%. The proportion of 4-6 rings PAHs is lower.