Study On Extraction Of Tea Protein And Its Physical And Chemical Properties

21%-28% dry weight of tea is protein, which may have a some healthy function. Tea protein is an underutilized protein source. For deepen using tea leaf, the technology of extraction, purification, isolation of tea protein, and chemical characterization, functional properties of tea protein were studied.Extracted tea protein by alkali from tea is higher efficiency and low cost. The orthogonal experiment and single factor test were carried out. The optimum protein extracting treatment is extracted with alkali. 56.36% of the protein was extracted from milled tea flour in 0.1 mol/LNaOH solution with a solvent/flour ratio of 40:1 at 40℃ for 5h.Extracted tea protein by enzyme is mild reaction condition and substrate specialization. Different proteases have different hydrolysis characterization. Extraction yield of tea protein is first parameter for proteases. Orthogonal experiment and single factor test were carried out. Alaclase and Protamex was fitted. The optimum process of extracting protein from tea by enzyme was that: adding 4% Alaclase and Protamex...