食用菌保健茶的研制

茶饮料是指以茶叶或不含茶叶的原料用沸水冲泡、温浸而成的一种专供饮用的液体,再将金针菇加入其中再辅以其它作料即可研制出食用菌保健茶。本实验的目的主要是尝试研制出一种新型的食用菌保健茶,选择的食用菌是金针菇。方法是先选择合适品种的茶叶,再利用单因素实验和正交实验分别确定最佳配方和最佳工艺条件。经过实验不断探索得出以下结论:最佳配方是金针菇用量:茶叶用量:柠檬酸:糖=25:30:2:60,最佳工艺是温度80℃,浸泡时间20min,料液比1:30。     

杜仲茶制法

杜仲叶与杜仲皮的药效相同，具有降血压，补肝肾、强筋骨、抗溃疡、降血脂、防衰老等功能。遵义属杜仲中心产区，杜仲资源面积约40万亩，年产杜仲叶20000吨，可充分利用本市杜仲叶资源，加工纯天然保健饮品—杜仲茶。其制作方法如下：     

枣茶饲料的加工技术

以红枣汁、茶叶的浸提液为主要原料配以甜味剂、品质改良剂、稳定剂，经调配、均质、脱气、杀菌等处理，制成一种新型的保健茶饲料。     

葱头皮的奇效

充满药效的葱头皮 我们日常所吃的食品中,有许多具有各种各样的药效。其中,葱头具有恢复疲劳、强化体力等广泛的功效,已被大家所公认。除了用葱头做菜以外,还有的人把切成薄片的葱头泡在酷里,作成醋泡葱头吃,据说对保持和增进身体健康很有效。 在用葱头做菜或做醋泡葱头时,首先要把葱头外边的茶色薄皮剥去。而这些被剥去的薄皮一般都被当成垃     

保健茶饮料的研究进展

对近几年出现的保健茶饮料的研制方法进行综述，关注一些保健茶饮料的研制原理，工艺流程及配方结果。对今后复合茶饮料的发展方向做出展望。     

Antioxidant power of phytochemicals from Psidium guajava leaf

Dried ground leaves of Psidium guajava L. (guava) were extracted by water and aqueous ethyl alcohol 50% (1:10) ratio, and the total phenolic content in the extracts was determined spectrophotometrically according to Folin- Ciocalteu's phenol method and calculated as gallic acid equivalent (GAE). Remarkably high total phenolic content 575.3 +/-15.5 and 511.6+/-6.2 mg of GAE/g of dried weight material (for ethanol guava leaf extracts and water guava leaf extracts, respectively) were obtained. The antioxidant activity of lyophilized extracts was determined at ambient temperature by means of a 2,2-diphenyl-1-picrylhydryzyl (DPPH*) colorimetry with detection scheme at 515 nm. The activity was evaluated by the decrease in absorbance as the result of DPPH* color change from purple to yellow. The higher the sample concentration used, the stronger was the free radical-scavenging effect. The results obtained showed that ascorbic acid was a substantially more powerful antioxidant than the extracts from guava leaf. On the other hand, the commercial guava leaf extracts and ethanol guava leaf extracts showed almost the same antioxidant power whereas water guava leaf extracts showed lower antioxidant activity. The parameter EC(50) and the time needed to reach the steady state to EC(50) concentration (T(EC(50))) affected the antiradical capacity of the sample. The antioxidant efficiency (AE) has been shown to be a more adequate parameter for selecting antioxidants than the widely used EC(50). This study revealed that guava leaf extracts comprise effective potential source of natural antioxidants.     

天然多元复合营养保健茶开发动态

目前,随着茶叶深加工及综合利用研究的不断深入,我国有关科研生产部门已将茶叶与其它一些天然植物、动物进行复合加工,开发出了许多深受消费者青睐的营养保健茶,现就近期新动向作一简介.