[食品] 茶
...下) 托福真题核心词汇-TPO1(下) 托福真题核心词汇-TPO1(上) 托福真题核心词汇-TPO1(上) Tea 茶的来源 英国人爱喝茶(tea)是世界闻名的。然而茶的故乡并不在英国,而在中国,中国是种茶、制茶和饮茶最早的国家,英国最早的茶原是300年前从中国运过去的。
三乙醇胺
本文中制备了以丙烯酰胺(AA)和亚甲基双丙烯酰胺(BAA)作为联合多功能单体、以曙红Y(EY)染料做光敏剂、三乙醇胺(TEA)做光引发剂、聚乙烯醇(PVA)作为黏结剂,并掺杂了无机纳米TiO2颗粒的光致聚合物厚膜,用实验的方法研究了该光聚物厚膜的全息存储的特...
三乙胺
...甲酸-(2,5-二甲氧基苯羰甲基)酯的合成研究中,我们发现在丙酮回流条件下,应用α-氯-2,5-二甲氧基苯乙酮与苯甲酸钠反应,三乙胺(TEA)作为缚酸剂,碘化钠作为活化剂,TLC基本检测不到反应发生,主要是甲氧基具有一定的空间阻碍作用以及供电性基团的引入减低了α-氯的活...
茶叶
茶叶中相关成分的最新分析方法 关键词:茶叶;品质;近红外光谱;毛细管电泳;生物传感器 [gap=539]Key words:tea;quality;NIRS;CE;biosensor
Tea is an aromatic beverage commonly prepared by pouring hot or boiling water over cured leaves of the Camellia sinensis, an evergreen shrub native to Asia. After water, it is the most widely consumed beverage in the world. Some teas, like Darjeeling and Chinese greens, have a cooling, slightly bitter, and astringent flavour, while others have vastly different profiles that include sweet, nutty, floral, or grassy notes.Tea originated in China as a medicinal drink. It came to the West via Portuguese priests and merchants introduced to it there during the 16th century. Drinking tea became fashionable among Britons during the 17th century, who introduced the plant to their possessions in India to bypass a Chinese monopoly.The phrase herbal tea usually refers to infusions of fruit or herbs made without the tea plant, such as steeps of rosehip, chamomile , or rooibos. These are also known as tisanes or herbal infusions to distinguish them from "tea" as it is commonly construed.