John Myers
Natural yogurt yog suav hais tias yog los ntawm ntau yam los ua ib yam khoom ntuj. Txawm li cas los xij, nws feem ntau tsis yog tsuas yog cov khoom xyaw tseem ceeb ntawm cov mis nyuj thiab cov kab mob lactic acid uas siv hauv kev tsim khoom tab sis kuj muaj cov khoom ntxiv xws li mis hmoov. Kuj tseem muaj qhov sib txawv loj hauv saj thiab sib xws ntawm ntuj yogurt.
Yogurt: ntau lawm thiab cov khoom xyaw
Cov kab mob lactic acid yog qhov tseem ceeb rau kev tsim cov yogurt: Yog tias koj ntxiv rau cov mis nyuj thiab ua kom sov txaus, cov kab mob hloov cov mis nyuj qab zib (lactose) rau hauv lactic acid (lactate). Qhov no txo qis tus nqi pH hauv cov mis nyuj: cov protein coagulates, thiab yogurt yog tsim. Lactic acid yog ib qho khoom noj khoom haus uas muab cov kua mis nyeem qaub rau lub neej ntev. Cov naj npawb ntawm cov mis uas luam tawm ntawm yogurt tuaj yeem siv los nrhiav seb lub tuam txhab twg tsim nws: txhua tus lej raug xa mus rau lub tuam txhab khoom noj siv mis.
Cov kab mob siv tau muaj kev cuam tshuam rau lub saj ntawm lub ntuj yogurt. Koj txiav txim siab seb lub yogurt saj me ntsis los yog qaub. Cov qauv qauv tau teev tseg hauv Cov Khoom Siv Mis Txheej Txheem: Piv txwv li, "mob" yogurt yuav tsum tsis muaj cov kab mob Lactobacillus bulgaricus tab sis yuav tsum tau ua los ntawm cov kab mob yogurt uas saj tsis qab qaub.
Mis hmoov nce cov ntsiab lus lactose
Cov neeg uas muaj lactose intolerance feem ntau zam yogurt vim tias cov kab mob lactic acid ua rau cov lactose yuav luag tag. Txawm li cas los xij, ntxiv mis hmoov ntxiv cov mis nyuj qab zib (lactose) cov ntsiab lus hauv yogurt. Raws li Txoj Cai Lij Choj Mis, qhov sib ntxiv ntawm cov mis hmoov tsis tas yuav tsum tau tshaj tawm hauv cov npe ntawm cov khoom xyaw, vim tias cov mis hmoov yog suav tias yog mis nyuj.
Genetic engineering hauv natural yogurt
Genetic engineering hauv cov khoom siv mis nyuj yog qhov teeb meem tseem ceeb rau ntau tus neeg siv khoom. Nws yog feem ntau hais txog kev pub nyuj: yog tias cov tsiaj tau txais cov khoom noj muaj zog, cov khoom xyaw nquag siv pob kws, rapeseed pluas mov thiab soy tuaj yeem los ntawm cov nroj tsuag hloov pauv. Ntau lub tuam txhab ntawm ntuj yogurt tshaj tawm lawv cov khoom nrog nqe lus xws li "tsis muaj noob caj noob ces engineering".
Nws tsis tau lees paub qhov tseeb ntawm kev tshawb fawb seb puas tau hloov cov noob ntawm cov khoom noj tau xaus rau hauv cov mis nyuj. Muaj cov kev tshawb fawb cais tawm uas muaj peev xwm txheeb xyuas cov kab mob ntawm cov pob kws hloov pauv thiab cov kua txiv hmab txiv ntoo hauv cov hlwb ntawm cov tsiaj thiab hauv cov mis nyuj.
Mis hmoov thiab genetic engineering hauv ntuj yogurt
Nyob rau hauv ib tug random qauv, Markt yuav ntuj yogurt los ntawm Ja! (Rewe), Milsani (Aldi), Milbona (Lidl), Alnatura, Landliebe thiab Weihenstephan. Tus nqi rau 500 grams yog nruab nrab ntawm 0.45 thiab 1.29 euros.
Raws li lawv tus kheej cov lus, Weihenstephan, Aldi, Lidl thiab Landliebe tsis ntxiv mis hmoov rau lawv cov yogurt ntuj. Peb cia siab rau daim ntawv qhia zais cia. Thaum nug los ntawm Markt, Alnatura tau hais tias nws ntxiv skimmed mis nyuj hmoov rau yogurt "kom tswj tau qhov sib xws thiab tiv thaiv cov kua los ntawm kev daws teeb meem". Alnatura hais cov mis hmoov ntawm cov npe ntawm cov khoom xyaw.
Raws li qhov kev thov ntawm kev ua lag luam Aldi, Alnatura, Landliebe, Lidl thiab Rewe tshaj tawm tias lawv tsis siv cov noob caj noob ces hauv ntuj yogurt. Weihenstephan tseem tsis tau hais tawm (raws li lub Kaum Hli 19, 2018).
