L-Aspartic acidyog ib txwm tshwm sim uas tsis yog -tseem ceeb amino acid; nws ua haujlwm raws li ob qho tib si lub hauv paus txheej txheem ntawm cov proteins thiab cov khoom siv tseem ceeb rau ntau yam siab -tus nqi- ntxiv cov khoom. Nrog rau cov tshuaj formula C₄H₇NO₄, nws zoo nkaus li cov hmoov granular ntawm chav tsev kub thiab ruaj khov thiab tsis muaj - lom. Nyob rau hauv xyoo tas los no, tau tsav los ntawm kev loj hlob tsis tu ncua hauv kev xav tau qis, kev lag luam kev lag luam loj tau nthuav dav zuj zus, thiab cov qauv ntawm kev lag luam saw tau matured.
Upstream: Raw Materials thiab Production
Ntu dej ntws feem ntau suav nrog cov khoom siv tshuaj lom neeg xws li fumaric acid thiab aqueous ammonia. Kev tsim khoom lag luam tam sim no tsuas yog siv cov txheej txheem enzymatic, siv aspartase los hloov fumaric acid thiab ammonia rau hauv L-aspartic acid. Piv rau cov tshuaj synthesis ib txwm muaj, enzymatic hloov dua siab tshiab muaj kev ua haujlwm siab thiab muaj zog tshwj xeeb, ua rau siab - tawm los ntawm L- isomer. Hais txog cov txheej txheem tsim khoom, cov tuam txhab feem ntau siv dawb -enzyme lossis tag nrho- cell catalysis txoj kev, tau txais cov khoom kawg los ntawm cov kauj ruam xws li kev cog qoob loo, kev hloov pauv, acidification thiab crystallization, thiab refining. Cov neeg ua lag luam tseem ceeb suav nrog cov tuam txhab lag luam thoob ntiaj teb xws li Kyowa Hakko Bio, Evonik, thiab Sigma-Aldrich, nrog rau ntau cov neeg tsim khoom tshwj xeeb hauv cov amino acid.
Midstream: Cov khoom thiab cov qauv
Ntu ntu nruab nrab ua cov txheej txheem L-aspartic acid rau hauv cov khoom ntawm ntau yam kev qhia tshwj xeeb los muab cov khoom sib txawv hauv qab. Pharmaceutical- cov khoom qib yuav tsum ua raws li EP (European Pharmacopoeia) thiab USP (United States Pharmacopeia) cov qauv, yuav tsum muaj purity ntawm 98.5%–101.0%, thaum zaub mov- cov khoom qib yuav tsum ua tau raws li cov kev cai zoo rau cov khoom noj ntxiv. Cov khoom lag luam tuaj yeem muab faib ua tsiaj- muab los thiab tsis yog-tsiaj- tau txais hom raws li cov khoom siv raw los ua kom tau raws li kev xav tau ntawm kev lag luam sib txawv.
Downstream: Ntau qhov chaw thov
Cov kev siv downstream thoob plaws hauv kev lag luam saw yog qhov dav heev. Hauv kev lag luam khoom noj khoom haus, L-aspartic acid yog cov khoom siv tseem ceeb rau cov khoom qab zib uas muaj npe nrov aspartame thiab tseem siv los ua khoom noj khoom haus ntxiv hauv ntau yam dej qab zib. Hauv kev lag luam tshuaj, nws yog siv los tsim cov tshuaj rau cov kab mob hauv lub plawv thiab cov khoom siv rau cov amino acid infusions, nrog rau cov neeg ua haujlwm txhawb lub siab ua haujlwm, detoxifying ammonia, thiab txo qhov qaug zog. Nyob rau hauv biopharmaceuticals, nws yog ib feem tseem ceeb ntawm cov kab lis kev cai xov xwm ntawm tes, txhawb kev tsim cov tshuaj kho cov proteins thiab monoclonal antibodies. Hauv kev lag luam tshuaj, nws yog siv los tsim cov eco- cov khoom siv zoo polyaspartic acid, uas tuav lub peev xwm tseem ceeb hauv cov khoom siv biodegradable plastics.
Tam sim no, cov txheej txheem ntsuab synthesis thiab kev nthuav dav ntawm cov kev siv downstream yog ob lub ntsiab tsav tsheb ntawm kev lag luam kev loj hlob, nrog kev sib koom ua ke tseem ceeb tshwm sim thoob plaws hauv kev lag luam.