Muaj ib qho lus hais tias" tsis yog iab los yog astringent tsis yog" ;. Bitterness yog lub qub saj ntawm tshuaj yej. Lub npe qub ntawm cov tshuaj yej ua" tshuaj yej iab" tau ntev tau lees tias. Tab sis cov neeg uas saj cov tshuaj yej yog twv yuav raug hu tsis tau saj qhov iab, tab sis saj qhov qab saj, qab zib, thiab rov qab ntawm cov tshuaj yej, thiab muaj kev cuam tshuam ntawm cov tshuaj yej kua zaub ntawm saj buds.
Lub hauv paus tseem ceeb ntawm cov tshuaj yej yog cov tshuaj yej polyphenols, caffeine, thiab theanine. Peb txheeb xyuas peb qho sib txawv!
1. Vim li cas rau cov tshuaj yej kua zaub" rov qab mus rau qab zib" ;?
Kev sib cav thawj zaug yog qhov tshwm sim ntawm kev hloov pauv ntawm kev tsis sib haum xeeb:
Xib fwb Wang Yuefei, tus thawj coj ntawm Lub Tsev Haujlwm Saib Xyuas Haujlwm Tea Science ntawm Zhejiang University, qhia txog nws cov kev xav hauv phau ntawv" Tea Culture thiab Tea Health" kev kho los ntawm nws:" Tshuaj yej muaj cov tshuaj yej polyphenols, uas tuaj yeem ua ke nrog cov protein tsim ib txheej hauv lub qhov ncauj kab noj hniav. Daim nyias nyias ua rau lub cev, qhov nqaij hauv zos ua rau lub qhov ncauj tawm ntawm qhov ncauj ua rau muaj kev tsis txaus siab ntawm lub qhov ncauj ntawm lub qhov ncauj, uas ua rau peb xav tias cov tshuaj yej tsuas yog haus cawv yuav muaj qhov iab. Yog hais tias cov ntsiab lus ntawm cov tshuaj yej polyphenols ntau dua qhov tsim nyog, nws yuav tsim daim nyias nyias nrog tsuas yog ib lossis ob qho monolayers lossis bilayers qhov tuab ntawm zaj duab xis yog muaj pes tsawg, thiab muaj ib qho kev ntsiag to hauv lub qhov ncauj thaum pib. Tom qab cov zaj duab xis sib dhos, cov leeg hauv zos hauv cov qhov ncauj tawm pib rov zoo, thiab txoj kev tsis txaus ntseeg tau hloov pauv, thiab txoj kev xav rov qab." Yog li ntawd, xibfwb Wang Yuefei ntseeg hais tias" rov qab los qab zib" yog qhov tshwm sim ntawm kev sib xyaw ntawm tshuaj yej polyphenols thiab protein ntau.
Lwm txoj kev ntawm kev hais:
ntseeg tias" rov qab Gan" yog qhov tsis txaus ntseeg ntawm lub qhov ncauj ntawm lub qhov ncauj, uas yog," cov lus tsis sib xws" ;. McBurney thiab xibfwb Bartoshuk tau hais hauv tsab xov xwm" Kev sib raug zoo ntawm cov khoom sib txawv txawv thiab muaj qhov tsis haum" luam tawm xyoo 1979:" Qab zib thiab kev iab siab yog lub tswv yim kev sib txheeb. Thaum koj saj cov khoom qab zib xws li sucrose, koj yuav pom tias dej yog iab me ntsis. Yog lawm, thiab thaum koj saj cov tshuaj iab xws li caffeine thiab quinine, koj yuav hnov tias cov dej qab zib." Thiab qhov tshwm sim no yog ib hom kev sib thooj, yog li ntau tus neeg kuj xav tias qhov kev tsis pom zoo no tseem yuav yog ib qho ntawm cov teeb meem uas ua rau muaj kev tsis lees paub.
Qab Zib:
Cov tshuaj yej kua zaub muaj polysaccharides. Cov polysaccharides no tsis muaj qab zib, tab sis muaj qee yam viscosity, yog li lawv yuav nyob hauv qhov ncauj. Qaub ncaug muaj salivary amylase, uas tuaj yeem ua rau lub cev qhuav ntawm cov hmoov txhuv nplej mus rau hauv maltose, uas muaj qab qab. Cov Enzymes xav tau qee lub sijhawm los rhuav tshem cov polysaccharides, thiab qhov sib txawv ntawm lub sijhawm cov tshuaj tiv thaiv no ua rau muaj kev xav ntawm" rov qab qab zib" ;.
2. Yuav tsum tau" zoo tshuaj yej" muaj astringent saj?
Raws li tau hais los saum toj no, tshuaj yej polyphenols, caffeine, thiab theanine yog cov khoom xyaw tseem ceeb hauv tshuaj yej, yog li yuav tsum tau" tshuaj yej zoo" muaj astringent saj?
1. Cawv ntawm ib puag ncig tej yam nyob rau tshuaj yej zoo:
Qhov kub thiab lub teeb yog ncaj qha sib luag rau cov ntsiab lus ntawm cov tshuaj yej polyphenols (qhov kub, ntau lub teeb, ntau cov tshuaj yej polyphenols thiab tsawg dua theanine)
Qhov kub thiab lub teeb tsis sib xyaw ua ke rau cov ntsiab lus ntawm cov amino acids (qhov kub tsis tshua muaj thiab tsawg dua lub teeb, cov tshuaj yej khaws muaj ntau cov amino acids thiab tsawg dua cov tshuaj yej polyphenols)
2. Lub cawv ntawm cov txheej txheem sib txawv ntawm cov tshuaj yej ua tau zoo:
Nws yog qhov tseeb tias tom qab ua cov tshuaj yej nplooj yog qhov tseem ceeb heev, tseem ceeb thiab ua rau neeg tuag taus.
3. Ntawm lwm daim duab, cov khoom xyaw thiab saj cov tshuaj yej
Txiav txim siab qhov zoo ntawm cov tshuaj yej nplooj, thiab peb tau tham txog Mingqian tshuaj yej, Yuqian tshuaj yej, caij nplooj ntoos hlav tshuaj yej, caij nplooj zeeg tshuaj yej, tshuaj yej lub caij ntuj sov ... thiab lwm yam. Yog tias koj siv cov khoom xyaw hauv cov tshuaj yej los piav qhia nws, nws yog tshuaj yej polyphenols, Caffeine, theanine thiab lwm yam khoom xyaw, cov ntsiab lus thiab kev faib ua feem ntawm cov khoom xyaw txiav txim siab qhov zoo ntawm cov tshuaj yej.
Piv txwv li: cov ntsiab lus tsawg tsawg thiab kev ua yuam kev, lub siab tshiab thiab cov ntsiab lus qab zib, tom qab ntawd qhov tshwm sim yog cov tsos ceev, tshiab thiab qab zib yog pom tseeb
Kev saj tsis hnov tsw yog lub teeb, umami thiab qab zib saj yog qhov muaj zog, tom qab ntawd qhov tseem ceeb tshiab thiab qab zib saj yuav npog ib feem ntawm lub teeb iab thiab astringent saj, ua qhov iab thiab astringent saj (tshwj xeeb yog astringent) tsis tshua pom tseeb.
Qhov no yog vim li cas tshuaj yej polyphenols ua rau kev tsis txaus ntseeg, thiab vim li cas cov tshuaj yej nrog cov ntsiab lus siab ntawm cov tshuaj yej polyphenols tsis yog astringent.