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Coffee Knowledge - Kas fes txiv hmab txiv ntoo thiab noob

Cov noob kas fes thiab txiv hmab txiv ntoo yog cov khoom siv raw rau kev ua kas fes. Lawv muaj cov txheej txheem sab hauv thiab cov khoom siv tshuaj nplua nuj, uas cuam tshuam ncaj qha rau saj thiab tsw ntawm kas fes haus.

Ua ntej, cia peb saib cov qauv sab hauv ntawm kas fes txiv hmab txiv ntoo. Kas fes txiv hmab txiv ntoo feem ntau hu ua kas fes cherries, thiab lawv sab nrauv muaj xws li tev, pulp, thiab endocarp. Lub tev yog txheej txheej ntawm cherry, lub pulp yog lub qab zib fleshy ib feem ntawm cherry, thiab endocarp yog zaj duab xis uas qhwv cov noob. Hauv cov endocarp, feem ntau muaj ob lub noob kas fes, uas tseem hu ua kas fes taum.

Cov noob kas fes thiab txiv hmab txiv ntoo muaj ntau yam tshuaj lom neeg, qhov tseem ceeb tshaj plaws yog caffeine. Caffeine yog ib qho alkaloid ntuj uas muaj cov nyhuv stimulating lub paj hlwb thiab yog cov khoom tseem ceeb hauv kas fes haus uas ua rau tib neeg xav tias zoo siab. Ntxiv rau caffeine, cov noob kas fes thiab txiv hmab txiv ntoo kuj muaj cov tshuaj antioxidants, xws li polyphenols thiab amino acids, uas muaj txiaj ntsig zoo rau tib neeg kev noj qab haus huv.

Hais txog kev tsim kas fes thoob ntiaj teb, raws li cov ntaub ntawv los ntawm International Coffee Organization (ICO), thoob ntiaj teb kev tsim kas fes txhua xyoo yog kwv yees li 100 lab lub hnab (60 kg / hnab), ntawm cov kas fes Arabica suav txog li 65% -70%. Qhov no qhia tau hais tias kas fes yog ib qho ntawm cov dej haus nrov tshaj plaws hauv ntiaj teb thiab tseem ceeb heev rau kev lag luam thoob ntiaj teb.

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Ua rau kas fes bitterness

Ib qho ntawm qhov chaw ntawm kas fes iab yog xim av xim. Loj molecular xim av pigments yuav muaj zog iab; Raws li cov txheej txheem roasting tob zuj zus, tus nqi ntawm cov xim xim av kuj yuav nce ntxiv, thiab qhov feem ntawm cov xim xim av loj kuj yuav nce ntxiv, yog li qhov iab thiab kev ntxhib los mos ntawm cov taum kas fes tob tob yuav muaj zog dua.

Lwm qhov laj thawj rau kev iab ntawm kas fes yog "cyclic diamino acids" tsim los ntawm cov amino acids thiab cov proteins tom qab cua sov. Cov qauv molecular lawv tsim txawv, thiab qhov iab kuj txawv. Ntxiv rau kas fes, cocoa thiab npias tsaus kuj muaj cov khoom xyaw zoo li no.

Yog li peb puas tuaj yeem tswj tau qhov kev iab iab? Cov lus teb yog tau kawg. Peb tuaj yeem tswj tau qhov iab los ntawm kev hloov hom kas fes taum, qib ntawm roasting, roasting method, lossis txoj kev rho tawm.

Dab tsi yog qhov qaub saj hauv kas fes?

Cov khoom xyaw qaub hauv kas fes taum muaj xws li citric acid, malic acid, quinic acid, phosphoric acid, thiab lwm yam. Tab sis qhov no tsis yog qaub saj peb xav tias thaum peb haus kas fes. Cov qaub saj peb saj mas yog los ntawm cov kua qaub uas ua thaum lub sij hawm roasting txheej txheem.

Thaum roasting kas fes taum, qee cov khoom hauv cov taum yuav raug tshuaj lom neeg los tsim cov kua qaub tshiab. Ib qho piv txwv ntxiv yog tias chlorogenic acid decomposes tsim quinic acid, thiab oligosaccharides decompose los ua cov tshuaj tsis haum rau formic acid thiab acetic acid.

Cov kua qaub tshaj plaws hauv cov taum roasted yog quinic acid, uas nce ntxiv thaum lub roasting tob. Nws tsis tsuas yog muaj cov ntsiab lus siab, tab sis kuj muaj lub zog qaub saj, uas yog qhov tseem ceeb ntawm kas fes sourness. Lwm yam xws li citric acid, acetic acid, thiab malic acid kuj tseem nyob hauv kas fes. Lub zog thiab cov khoom ntawm ntau cov kua qaub sib txawv. Txawm hais tias lawv tag nrho cov qaub, lawv cov khoom xyaw yog qhov nyuaj heev.

Txoj kev uas qaub saj tawm yog txawv nyob ntawm seb lub xeev ntawm tus qauv. Muaj ib yam khoom nyob rau hauv quinic acid uas muaj peev xwm emit lub qaub saj thiab nkaum lub qaub saj. Yog vim li cas yog vim li cas brewed kas fes ua ntau thiab qaub yog vim hais tias cov qaub uas twb xub muab zais maj mam dissipates lub sij hawm.

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Yuav kom tswj tau qhov tsw tshiab ntawm cov taum kas fes, koj thawj zaug xav tau cov khoom ntim zoo thiab cov khoom ntim nrog cov khoom ruaj khov.

Peb yog cov chaw tsim khoom tshwj xeeb hauv kev tsim cov hnab ntim kas fes rau ntau tshaj 20 xyoo. Peb tau dhau los ua ib lub hnab kas fes loj tshaj plaws hauv Suav teb.

Peb siv qhov zoo tshaj plaws WIPF li qub los ntawm Swiss kom koj kas fes tshiab.

Peb tau tsim lub hnab eco-phooj ywg, xws li cov hnab ntim khoom siv thiab cov hnab ntim khoom siv rov ua dua tshiab, thiab cov ntaub ntawv PCR tshiab tshaj tawm.

Yog tias koj xav pom YPAK daim ntawv pov thawj tsim nyog, thov nyem rau peb.


Post lub sij hawm: Aug-02-2024