食品研究与开发
食品研究與開髮
식품연구여개발
FOOD RESEARCH AND CEVELOPMENT
2014年
4期
1-4
,共4页
茶叶%PC12神经细胞%损伤%多酚
茶葉%PC12神經細胞%損傷%多酚
다협%PC12신경세포%손상%다분
Tea%PC12 cells%injury%polyphenols
采用高效液相色谱(HPLC)分析普洱茶、乌龙茶、绿茶和红茶连续三次水浸泡物中茶多酚类及嘌呤类生物碱的含量。利用PC12神经细胞损伤模型比较四种茶叶提取物对于PC12神经细胞的保护作用。采用热90℃,30 min/次,25倍量水,连续3次浸泡4种茶叶,第1次和第2次提取能够获得茶叶中的主要多酚类物质。普洱茶、乌龙茶、绿茶和红茶中前两次总多酚类成分的提取率为99.38%、94.50%、87.49%、99.15%,而嘌呤类生物碱的提取率为97.57%、95.81%、88.01%、97.95%。PC12神经细胞活性测试结果显示各种茶叶提取物对谷氨酸导致的神经细胞兴奋性毒性损伤具有较好的保护作用,而对过氧化氢以及BSO导致的细胞损伤并无显著影响。
採用高效液相色譜(HPLC)分析普洱茶、烏龍茶、綠茶和紅茶連續三次水浸泡物中茶多酚類及嘌呤類生物堿的含量。利用PC12神經細胞損傷模型比較四種茶葉提取物對于PC12神經細胞的保護作用。採用熱90℃,30 min/次,25倍量水,連續3次浸泡4種茶葉,第1次和第2次提取能夠穫得茶葉中的主要多酚類物質。普洱茶、烏龍茶、綠茶和紅茶中前兩次總多酚類成分的提取率為99.38%、94.50%、87.49%、99.15%,而嘌呤類生物堿的提取率為97.57%、95.81%、88.01%、97.95%。PC12神經細胞活性測試結果顯示各種茶葉提取物對穀氨痠導緻的神經細胞興奮性毒性損傷具有較好的保護作用,而對過氧化氫以及BSO導緻的細胞損傷併無顯著影響。
채용고효액상색보(HPLC)분석보이다、오룡다、록다화홍다련속삼차수침포물중다다분류급표령류생물감적함량。이용PC12신경세포손상모형비교사충다협제취물대우PC12신경세포적보호작용。채용열90℃,30 min/차,25배량수,련속3차침포4충다협,제1차화제2차제취능구획득다협중적주요다분류물질。보이다、오룡다、록다화홍다중전량차총다분류성분적제취솔위99.38%、94.50%、87.49%、99.15%,이표령류생물감적제취솔위97.57%、95.81%、88.01%、97.95%。PC12신경세포활성측시결과현시각충다협제취물대곡안산도치적신경세포흥강성독성손상구유교호적보호작용,이대과양화경이급BSO도치적세포손상병무현저영향。
Using the HPLC method,the contents of major polyphenols and purine alkaloids were determined on consecutive extracts of pu-erh tea,oolong tea,green tea and black tea for three times. PC12 cells were also introduced for the studies on the protective effects of these tea extracts. Under the extraction condition of hot water at 90 centidegree for 30 min each time,four kinds of tea were consecutively extracted for three times. The combination of first and second extracts of pu-erh tea, oolong tea, green tea and black tea account for the 99.38%, 94.50 %,87.49 %,99.15 % of total polyphenols,and for 97.57 %,95.81 %,88.01 % and 97.95 % of purine alkaloids. All of four kinds of tea extracts show great protective effects on the injury of PC12 induced by glutamate,rather than buthionine sμlfoximine (BSO) and H2O2.