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Fermented tshuaj yej

Dec 21, 2017

Fermented tshuaj yej (tseem hu ua post-fermented tshuaj yej los yog tshuaj yej tsaus ) yog hom tshuaj yej uas tau muaj microbial fermentation, los ntawm ob peb lub hlis mus ntau xyoo. Qhov kis tau ntawm cov tshuaj yej tawm mus rau cov av qeeg thiab cov pa oxygen thaum lub sijhawm tseem ua rau endo-oxidation (muab tau los ntawm cov tshuaj yej-nplooj enzymes lawv tus kheej) thiab exo-oxidation (uas yog microbially catalysed). Cov tshuaj yej tawm thiab cov cawv los ntawm lawv ua ib tsos tsaus tsawv nrog oxidation. Yog li, ntau hom ntawm fermented teas tsim thoob plaws hauv Suav teb kuj raug xa mus ua tsaus ntoos tshuaj yej, tsis txhob totaub nrog dub tshuaj yej . Tus nto moo tshaj plaws fermented tshuaj yej yog Pu-Erh, uas ua rau Y YuajNav Provice, thiab Anhua maub cov tshuaj yej ua rau Anhua lub teb chaws ntawm Hunan Provice.

Lub fermentation ntawm tshuaj yej yoojyim alters lawv Chemistry, cuam tshuam cov organoleptic zoo ntawm lub tshuaj yej los ntawm lawv. Fermentation cuam tshuam tsis hnov ​​tsw ntawm cov tshuaj yej thiab feem ntau mellows nws saj, txo astringency thiab bitterness thaum kev txhim kho mouthfeel thiab aftertaste. Cov microbes tuaj yeem tsim cov metabolites nrog cov kev pabcuam kev noj qab haus huv.

Lub fermentation yog nqa tawm feem ntawm pwm. Aspergillus niger tau hais tias yog cov kab mob microbial hauv tus txheej txheem Pu-erh, tab sis hom tsiaj txhu tau tawm los ntawm PCR-DGGE tsom xam, uas taw rau Aspergillus Iuchuensis ua thawj tus neeg sawv cev ntawm kev ntim quav.

Feem ntau fermented teas yog ua nyob rau hauv Suav teb, tab sis ob peb hom yog tsim nyob rau hauv Nyiv. Nyob rau hauv Shan State, Myanmar, laag yog ib daim ntawv ntawm fermented tshuaj yej uas yog noj, thiab zoo li cov taum mog qab zib kuj tseem noj nyob rau qaum teb Thaib teb thiab sab qab teb Yunnan.

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