Nov yog cov ncauj lus kom ntxaws:
1. Chemistry: Vim li cas Isomerism Matters hauv Lactones
Rau lactones zoo li δ-Decalactone, qhov "cis" thiab "trans" tsis yog hais txog ob daim ntawv cog lus (raws li nws ua nyob rau hauv molecules zoo li fatty acids) tab sis rau cov txheeb ze stereochemistry ntawm ob lub chiral chaw ntawm lub nplhaib. Lub nplhaib qauv tsim ib qho teeb meem uas qhov kev taw qhia spatial ntawm hydrogen atoms thiab cov saw alkyl txheeb ze rau lub nplhaib dav hlau txawv.
· cis-Isomer: Cov hydrogen atoms ntawm cov pa roj carbon atom nyob rau tib sab ntawm lub nplhaib dav hlau. Qhov no tsim ib qho tshwj xeeb, ntau yam kev txwv.
· trans-Isomer: Cov hydrogen atoms nyob rau sab nraud ntawm lub nplhaib dav hlau. Qhov no tsim ib qho txawv, feem ntau tsis tshua muaj strained, molecular duab.
Cov kev sib txawv me me no ua rau muaj qhov sib txawv tseem ceeb hauv qhov molecule cuam tshuam nrog cov ntxhiab tsw receptors, thiab yog li, nws cov aroma profile.
2. Qhov sib npaug hauv Natural vs. SyntheticMis Lactone
Tau qhov twg los Typical cis Isomer Proportion Hom trans Isomer Proportion Qhov Tseem Ceeb Vim Li Cas
Ntuj (los ntawm Dairy) > 99.5% (Tshwj xeeb 100%) < 0.5% (Txoj kab los yog tsis muaj) Txoj hauv kev enzymatic biosynthesis hauv nyuj yog stereospecific, tsim tau tsuas yog (R)-daim ntawv uas ua rau cis-lactone.
Synthetic ~ 70% - 95% ~ 5% - 30% Feem ntau cov tshuaj synthesis txoj kev (xws li, los ntawm petrochemicals los yog ricinoleic acid) tsis zoo kawg nkaus stereospecific, uas ua rau ib tug sib tov ntawm isomers (ib racemate). Qhov piv txwv yog nyob ntawm cov txheej txheem tshwj xeeb thiab cov kauj ruam ua kom huv.
3. Kev puas siab ntsws: Vim li cas lub cis Isomer tseem ceeb heev
Qhov kev faib tawm isomer no tsis yog tsuas yog xav paub txog tshuaj lom neeg xwb; Nws muaj qhov cuam tshuam ncaj qha thiab muaj zog rau qhov kev hnov lus zoo:
· cis-δ-Decalactone: Qhov no yog cov isomer nrog cov khoom muaj nqis heev, khaus, creamy, txiv duaj-zoo li, thiab milky aroma. Nws yog tus cwj pwm cuam tshuam nrog rauMis Lactone.
· trans-δ-Decalactone: Cov isomer no muaj qhov tsis muaj zog, tsis tshua muaj tus yam ntxwv, thiab qee zaum txawm tias "ntsuab" lossis "rog" tsw. Nws txhawb me ntsis rau qhov xav tau creamy profile thiab tuaj yeem dilute los yog distort lub purity ntawm aroma.
4. Kev cuam tshuam rau kev lag luam Flavor & Fragrance
Qhov kev faib ua feem ntawm cis rau trans isomer yog qhov cim tseem ceeb ntawm qhov zoo thiab tus nqi:
1. Natural Lactones (los ntawm Dairy): Vim lawv yog 100% cis, lawv muaj qhov tseeb tshaj plaws, muaj zog, thiab xav tau aroma. Lawv kuj yog cov kim tshaj plaws vim cov txheej txheem raug nqi ntawm kev rho tawm los ntawm cov khoom siv mis nyuj.
2. High-Quality Synthetic Lactones: Cov neeg tsim khoom siv cov txheej txheem tshuaj lom neeg lossis cov khoom siv enzymatic los ua kom cov txiaj ntsig zoo tshaj plaws ntawm cis isomer (piv txwv li, ua tiav 95%+). COA rau tus nqi hluavtaws lactone feem ntau yuav qhia txog cov ntsiab lus cis siab. Qhov no yog ib qho tseem ceeb parameter uas buyers check.
3. Standard Synthetic Lactones: Cov ntsiab lus cis qis dua (piv txwv li, 70-85%) qhia tau tias cov khoom ua kom zoo dua qub. Nws yuav muaj qhov tsis muaj zog, tsis muaj ntxhiab tsw qab thiab siv rau hauv cov ntawv thov uas tus nqi yog thawj tus neeg tsav tsheb thiab cov aroma zoo tshaj plaws tsis yog qhov tseem ceeb.
Xaus
Hauv cov ntsiab lus, qhov kev faib ua feem tsis yog tus lej tas li tab sis qhov ntsuas tseem ceeb ntawm keeb kwm thiab qhov zoo:
· Hauv qhov xwm txheej, qhov kev faib ua feem ntau dhau mus rau> 99.5% cis-isomer.
· Hauv kev sib txuas, qhov kev faib ua feem sib txawv, tab sis ntau dua cis-isomer cov ntsiab lus ncaj qha cuam tshuam nrog lub zog zoo dua, ntau yam ntuj tso, thiab khaus creamy aroma.
Yog li ntawd, thaum ntsuas ib qho piv txwv ntawmMis Lactone, qhov sib piv ntawm cis / trans yog ib qho tseem ceeb tshaj plaws los tshuaj xyuas ntawm Daim Ntawv Pov Thawj Kev Ntsuam Xyuas (COA).
Post lub sij hawm: Sep-26-2025