@article{WU:309822,
      recid = {309822},
      author = {WU, Xuejie and DING, Guangping and LAI, Jiandong},
      title = {Water Bath Extraction Optimization of Polyphenols from  Qing Brick Tea and Raw Material Selection for Tea  Polyphenol Extraction },
      journal = {Asian Agricultural Research},
      address = {2021-08-20},
      number = {1812-2021-518},
      month = {Aug},
      year = {2021},
      abstract = { In this paper, single-factor experiments and orthogonal  experiment were conducted to optimize the water bath  extraction of polyphenols from Qing Brick Tea, and the  optimal extraction conditions obtained were as follows:  solvent of 50% ethanol, solid/liquid ratio of 1: 30,  temperature of 80 ℃, and time of 6 min. Under the optimal  water bath extraction conditions, polyphenols in fresh tea  leaves, fresh tea petioles, fresh tea blades, finished  brick tea, finished tea petioles, finished tea blades, tea  dregs after brewing and tea dregs after boiling were  extracted, respectively. It was found that the quality  fraction of polyphenols extracted from fresh tea leaves was  the highest, with the best extraction effect. The  extraction effect of leaf blades was better than that of  leaf petioles, and the extraction effect of tea dregs after  brewing was better than that of tea dregs after boiling. },
      url = {http://ageconsearch.umn.edu/record/309822},
      doi = {https://doi.org/10.22004/ag.econ.309822},
}