| China,India,Indonesia,Sri Lanka,Kenya and other countries are the main production nations of broken black tea(BBT).Due to obvious differences of geographic environments and tea cultivars among countries,BBT has different styles and their own characteristics.For example,Ceylon black tea is famous for its rich fragrance,while Assam black tea is suitable for making milk tea,which is fragrantly delicious and very popular.Generally,BBT abroad is strong and has bright infusion color,while domestic BBT has high aroma and beautiful appearance.However,on the market,more attentions are paid to the taste of BBT,which is strong,astringent and brisk and has red and brilliant infusion color.Using BBT from Kenya,India,Sri Lanka,Indonesia and China as materials,the study was carried out to discuss flavor characteristics and strengths and weaknesses of BBT from different countries based on analyses of sensory evaluation and biochemical components.At the same time,the optimum blending proportions for making milk tea,pure black tea and ice black tea were also studied.Researches above would give theoretical bases and guidance to integrated applications of BBT from different countries to tea drinks.Results were:(1)In the aspect of qualities of BBT from different countries,BBT from Ceylon and India had better flavor,BBT from Kenya had weaker briskness.BBT from Yunnan province had sweet,slightly high but caramel aroma.BBT from Indonesia were relatively worse,but had mellower taste,which could be used to reduce strengthen of tea liquor.(2)In the aspect of milk tea flavor,milk mixed with BBT from Ceylon or Indian had better flavor.BBT from Indonesia were slightly weak and not suitable for making milk tea.Milk mixed with BBT from Kenya had slightly aroma and a little mellow and thick taste.The taste were slightly mellow and thick in milk mixed with Yunnan BBT,which should not have caramel and fired aroma.(3)In the aspect of formulations of milk tea,milk tea mixed with BBT from India and Ceylon accounting for the main proportion would get better flavor and had lower cost in process.The higher proportions(beyond 50%)of BBT from Yunnan and Indonesia in milk tea would make flavor ordinary.(4)In the aspect of pure black tea flavor,BBT from Ceylon and India had better flavor,BBT from Indonesia were relatively worse.(5)In the aspect of formulations of BBT,the mixture of BBT from Ceylon,India and Kenya would get better flavor.BBT from Yunnan can reduce costs,but the blend ratio should be controlled due to its poorer infusion color.Indonesian BBT had ordinary flavor but low cost,so they could be properly increased while being blended.(6)In the aspect of iced black tea flavor,iced black tea made of Ceylon BBT had best flavor and good briskness.Iced black tea Yunnan BBT had distinctly cool and refreshing feeling.Indian BBT made iced black tea especially sweet and good flavor.Kenya or Indonesia BBT made iced black tea taste poor,but Indonesian BBT had low prices and could be used to reduce blending costs.(7)In the aspect of formulations of iced black tea,BBT from Yunnan accounting for the main proportion mixed with India or Ceylon BBT would get better flavor.It was formulations of higher proportion of Ceylon BBT and lower proportion of Indonesian BBT that could improve the flavor. |
