Wang Qingfen, Yang Fei, Jia Dandan, Wu Tian
Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Landscape Architecture Engineering Research Center of National Forestry and Grassland Administration, Kunming, Yunnan, China.
PeerJ. 2021 May 26;9:e11507. doi: 10.7717/peerj.11507. eCollection 2021.
The increasing popularity of has many medical and health benefits because of its rich polysaccharides (PSC) and polyphenols (PPN). It has become popular to brew the dry fruit slice as tea in some regions of China. In this study, optimize the extraction parameters of tea polysaccharides and polyphenols using response surface methodology. The results indicated the highest PSC yield of 17% at 46 °C for 11 min and the ratio of water/ fruit powder was 78 mL/g. The optimum extraction of PPN was at 95 °C for 10 min and the ratio of water/ fruit powder 90 mL/g, with 8.93% yield. Using dry fruit slices as a tea is reported for the first time. Based on the results, the maximum level of PSC can be obtained under condition by infusing about four dried fruit slice with average thickness and size in warm boiled water for 11 min, taking a 300 mL cup (300 mL of water) for example. The maximum level of PPN can be obtained by adding three slices of dried fruit slice to boiled water for 10 min. Considering the powder used in our study, the further pulverization of cutting into powder is more conducive to material precipitation. This study provides a scientific basis for obtaining PSC and PPN from dry fruit slice tea by brewing.
由于其富含多糖（PSC）和多酚（PPN），其越来越受欢迎并具有许多医学和健康益处。在中国的一些地区，将干燥的[具体名称]果片泡茶已变得流行。在本研究中，使用响应面法优化[具体名称]茶多糖和多酚的提取参数。结果表明，在46℃下提取11分钟且水/果粉比例为78 mL/g时，PSC的最高产率为17%。PPN的最佳提取条件是在95℃下提取10分钟且水/果粉比例为90 mL/g，产率为8.93%。首次报道了使用干燥的[具体名称]果片泡茶。基于这些结果，以一个300 mL的杯子（300 mL水）为例，在温开水中浸泡约四片平均厚度和尺寸的干燥[具体名称]果片11分钟，可在该条件下获得最高水平的PSC。通过向沸水中加入三片干燥的[具体名称]果片煮10分钟可获得最高水平的PPN。考虑到我们研究中使用的粉末，将其进一步粉碎成粉末更有利于物质沉淀。本研究为通过冲泡从干燥的[具体名称]果片茶中获得PSC和PPN提供了科学依据。
