Streptococcus Thermophilus: Cov txiaj ntsig, kev siv thiab ntau dua

• Dab tsi yogStreptococcus Thermophilus ?

Nyob rau hauv keeb kwm ntev ntawm tib neeg domestication ntawm cov kab mob, Streptococcus thermophilus tau dhau los ua hom pob zeb ntawm cov khoom noj siv mis nrog nws qhov tshwj xeeb kub tsis kam thiab muaj peev xwm metabolic. Xyoo 2025, qhov kev tshawb fawb tshiab tshaj plaws ntawm Suav Academy ntawm Cov Khoom Noj Fermentation Industries thiab International Dairy Federation (IDF) tau lees paub nws cov kab mob ywj pheej ntawm qib genome thawj zaug, kos npe rau theem tshiab hauv kev nkag siab txog kev tshawb fawb ntawm no "kua kub". Raws li lub hom phiaj tseem ceeb ntawm cov khoom noj siv mis fermented nrog cov khoom tsim tawm txhua xyoo ntawm ntau dua 30 lab tons thoob ntiaj teb, Streptococcus thermophilus tau tawg los ntawm cov ciam teb ib txwm muaj thiab teeb tsa lub nthwv dej ntawm kev hloov tshiab hauv cov khoom noj, kev kho mob thiab lwm yam.

Streptococcus thermophilus yog thawj lub npe los ntawm Orla-Jensen nyob rau hauv 1919. Tom qab muaj kev sib cav ntawm subspecies downgrading nyob rau hauv 1984 thiab hom kev kho dua tshiab nyob rau hauv 1991, nws thaum kawg tsim nws ywj siab hom raws li txoj cai los ntawm tag nrho cov genome sequencing (ANI ≥ 96.5%, dDDH ≥ 75%). Suav teb, tag nrho cov European Union thiab FDA. raws li kev nyab xeeb zaub mov hom (GRAS). Hauv xyoo 2025, tsab ntawv thib tsib ntawm IDF "Daim Ntawv Teev Cov Kab Mob rau Cov Khoom Noj Fermented" yuav ua kom tiav cov qauv hloov tshiab.

Streptococcus thermophilus yog Gram-positive, non-spore-forming, facultative anaerobic, nrog kev loj hlob zoo kub ntawm 45-50 ° C, pH kam rau ua ntau yam ntawm 3.5-8.5, thiab muaj zog tshav kub tsis kam (siv tus nqi> 80% tom qab 85 ° C kho rau 30 feeb).

• Cov txiaj ntsig yog dab tsiStreptococcus Thermophilus?

Raws li ntau dua 2,000 kev tshawb fawb thoob ntiaj teb, Streptococcus thermophilus qhia txog kev noj qab haus huv ntau yam:

1. Kev Tswj Xyuas Kev Noj Qab Haus Huv

Kev tswj cov kab mob kab mob: txwv tsis pub cov kab mob pathogenic los ntawm kev zais cov kab mob bacteriocins (xws li Salivaricin), ua kom cov kab mob plab hnyuv ntau ntxiv los ntawm 2-3 zaug.

Kev kho mucosal: Txhim kho qhov kev qhia ntawm Gal3ST2 noob, txo cov fucosylation ntawm colonic mucin, thiab txo cov tshuaj tua kab mob hauv plab hnyuv mucosal.

2. Kev cai Metabolic

Kev tswj cov ntshav qab zib: Kev cuam tshuam cov kab mob kub-tua tuaj yeem txo cov ntshav qab zib sai hauv cov nas ntshav qab zib los ntawm 23% thiab txhim kho insulin rhiab heev (HOMA-IR Performance index txo los ntawm 41%).

Cov roj cholesterol metabolism:Streptococcus thermophilusinhibit HMG-CoA reductase kev ua, txo cov ntshav LDL-C los ntawm 8.4%, thiab nce qib HDL-C.

3. Kev tiv thaiv kab mob

Cytokine kev tswj hwm: Txhawb nqa IL-10 secretion (kev sib xyaw ua ke tau nce los ntawm 1.8 npaug), inhibit TNF-α (tso los ntawm 52%), thiab txo cov mob ntev.

Mucosal barrier ntxiv dag zog rau: Txhawb kev nthuav qhia ntawm cov nqaij sib txuas nruj (ZO-1, Occludin) thiab txo cov plab hnyuv permeability (FITC-dextran permeability txo los ntawm 37%).

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4. Muaj peev xwm tiv thaiv mob qog noj ntshav

Kev tiv thaiv kab mob qog nqaij hlav hauv plab: Degrades carcinogens los ntawm txoj kev β-galactosidase, txo cov qog nqaij hlav hauv Apcmin / + nas los ntawm 58%.

Apoptosis induction: Ua kom txoj hauv kev Caspase-3, ua rau 4.3-fold nce hauv apoptosis tus nqi ntawm HT-29 cov kab mob qog noj ntshav.

• Dab tsi yog Daim Ntawv Thov NtawmStreptococcus Thermophilus?

Streptococcus thermophilus tab tom tawg los ntawm ib txwm ciam teb thiab tsim ntau hom ntawv thov matrix:

1. Kev lag luam mis nyuj

Yogurt / cheese: compounded nrog Lactobacillus bulgaricus, shortening lub sij hawm coagulation rau 4 teev thiab nce cov khoom tawm los ntawm 15%.

Cov khoom lag luam tsis muaj qab zib / cov rog tsawg: Los ntawm EPS synthesis thev naus laus zis, qhov nyuaj ntawm cov cheese uas tsis muaj rog tau nce los ntawm 2 zaug los simulate cov rog rog tag nrho.

2. Khoom noj khoom haus

Cov zaub mov tswj cov piam thaj: noj tshais cereals nrog 5% cov kab mob hmoov tuaj yeem ncua sijhawm cov ntshav qab zib tom qab 1.5 teev.

Immunoenhancer:Streptococcus thermophilusKev sib xyaw nrog oligofructose, tus kab mob ua pa hauv cov menyuam yaus txo qis los ntawm 33%.

3. Kev Kho Mob

Khoom noj khoom haus tshwj xeeb: siv rau kev npaj khoom noj khoom haus nkag mus rau kev txhim kho cov khoom noj khoom haus ntawm cov neeg mob kws khomob (albumin nce 1.2 g / dL).

Cov tshuaj Probiotic: ua ke nrog cov kab mob bifidobacteria los tsim cov tshuaj kho IBS, nrog rau qhov mob plab ntawm 78%.

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4. Kev Ua Liaj Ua Teb Thiab Kev Tiv Thaiv Ib puag ncigcov

Pub additives: Txo tus npua plab raws plab los ntawm 42% thiab nce kev hloov pauv hloov pauv los ntawm 11%.

Kev kho dej khib nyiab: Txo COD ntawm cov dej khib nyiab los ntawm 65% thiab txo cov sludge ntau lawm los ntawm 30%.

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