Sodium metabisulfite waa caawimaad ah ee u dirirayo, oo aan ugu yaraan si fudud oo kale ay leh:

1) Garsoorka anti browning, garsoorka enzymatic browning waxaa lagu yaraa in fruits iyo foodska potato. Sodium metabisulfite waa garsoor ah oo ka mid ah ee ku jira garsoor kasta oo dhan ee polyphenol oxidase. 0.0001% sulfur dioxide waxay ku sameyn doonaa garsooradda 20%, iyo 0.001% sulfur dioxide waxay ku daran doonaa garsooradda ah, oo kale waxay ugu dambeeyaan garsoorka enzymatic browning; Waxaa la isku jiray in ay ku soo saar doonaa oksijeenka food tissues iyo deoxidation; Sulfite waxay joogto doonaa glucose by addition, oo waxay ugu dambeeyaan glucose iyo aminowaxsiinadaas oo uu ka joogto food glycosaminoglycans, si aan u leedahay effekta anti browning.

2) Waxa uu soo socda acidda koor ah waxaa ka mid ah ku saabsan yahay qorax. Markaasaa wuxuu maqalaya dhammaantii koor ee ku jira soorka, waxaan idinka leeyahay inuu u baahan yihiin dhacdo ee Escherichia coli 1000 kaliya oo dheer ah kuwa oo la sameyn doono hydrogen sulfate. Wuxuuna 100-500 kaliya oo dheer ah kuwa beer yeast iyo 100 kaliya oo dheer ah kuwa mold. Markaasaa wuxuu sameeyaa microrganismaha haddii soo socda sulfur dioxide.

3) Funtikada loo sameeyo mashinkii loo sameeyo waxaa ka mid ah ku saabsan yahay mashinkii loo sameeyo.

4) Funtikada antioxidant. Sulfite waxaa la sameeyaa funtikada xiriir ah. Markii sulfite waa restoring agent ee ku jira, wuxuuna la sameeyaa ogaanka fruit iyo vegetable tissues, la baahan yihiin activityka oxidase, iyo la sameeyaa inuu u caddeeya dhammaadkooda ee vitamin C ee fruits iyo vegetables.

Sistemka aan ugu yaraan inuu sodium metabisulfite ugu fududaa:

Waxaa loo sameeyo bleaches si aad ugaarato horumarintaasida: oxidizing bleaching agents iyo replica bleaching agents.

Sodium metabisulfite ku jira kategoriya ee mid ah ee agentka carruurta replica.

Sodium metabisulfite ka soo diriraa ugaarka pigmentsi oo la sameeyaa carruurta iyo qoraxda carruursanaha. Carruurka waxbarashada ay ku sameyn doonaan carruurka ee dhintay oo ku jira carruurka ee moleculeska. Carruurka ku jira bondaad ku jira unsaturated, oo releaseka hydrogen atomska carruursanaha la sameeyaa bondaadka ee ku jira carruurka ee carruurka unsaturated si aysan yimid inuu sameeyaan single bonds, oo aan organic matter carruurta ah. Dhagaxdii uu ku jirin foodska ah ay ku sameeyeen carruurta uu ku jira iron ions ee trivalent. Waxbarashada reconstitution bleach ka soo diriraa iron ions ee trivalent ee ku jira divalent si aad ugu sameeyo browning ee food.

Sodium metabisulfite ka soo jeedin jiray reekinta addition sulfite oo ku yarannayaa, kuwaas oo la sameeyaa caqabadka bleach. Waxay uga sameeyaa reactions addition ee anthocyanins iyo carbohydrates ee bleach iyo fade. Reekintii wuxuu yeelaha ah, marka aan lagu heat ama acidification, waxay ku jirtaa sulfite, si anthocyanins ka tagi doonaa iyo ku sameeyaa laga degganayo raacooyinka ah ee red ee orodkooda.