iindaba

1. I-Dynamic Evolution ye-Nitrite

Ukusebenzisa i-spectrophotometry ukujonga ngokuqhubekayo inkqubo yokuvutshelwa, uvavanyo luveze uphawu "lwe-double-peak curve" kumxholo we-nitrite. Ngethuba lesigaba sokuqala (iiyure ezingama-0-24), iibhaktheriya zokunciphisa i-nitrate ziguqule ngokukhawuleza i-nitrate kwimifuno kwi-nitrite, amanqanaba e-spiking ukuya kwi-48 mg / kg. Kwinqanaba lesibini (iintsuku ezi-3-5), ukwanda kwebhaktheriya ye-lactic acid ngokuthe ngcembe ibolile i-nitrite, ibuyisela amanqanaba kwiindawo ezikhuselekileyo. Okuqaphelekayo, rhoqo ngo-5 ° C ukwanda kobushushu be-ambient kukhawuleza ukwakheka kwencopho ngeeyure eziyi-12-18.

Ukuthelekisa kunye ne-kimchi yorhwebo kubonise ukuba ukuveliswa kwemveliso, ngokulawulwa ngokuchanekileyo kweemeko (1.5% -2.5% salinity, 15-20 ° C), imida ye-nitrite iphezulu ngaphantsi kwe-32 mg / kg. Ngokwahlukileyo, i-kimchi yasekhaya, ehlala ingenako ukulawula ukushisa, ihlala idlula i-40 mg / kg, ebonisa iingozi eziphezulu zokhuseleko kwimisebenzi yasekhaya.

2. Amanqaku oLawulo olubalulekileyo

Ukugxininiswa kwetyuwa kudlala indima ebalulekileyo kwibhalansi ye-microbial. Kwi-salnity engaphantsi kwe-1%, iibhaktheriya ezinciphisa i-pathogenic kunye ne-nitrate zikhula kakuhle, ezibangela iincopho zangaphambili kunye nephezulu ye-nitrite. Uvavanyo luchonge i-2.5% yetyuwa njengolona lungelelwaniso lufanelekileyo, lucinezela iibhaktheriya ezinobungozi ngelixa lixhasa i-lactic acid bacteria metabolism.

Ulawulo lobushushu lubalulekile ngokufanayo. Ukuvubela kwi-20 ° C kubonise owona msebenzi uzinzile we-microbial. Amaqondo obushushu angaphezu kwama-25°C akhawulezisa ukuvubela kodwa anyuse imingcipheko yokungalingani kwemicrobial, ngelixa ngaphantsi kwe-10°C kwandisa ixesha lokhuseleko ukuya kwiintsuku ezingama-20. Ukubiliswa kwekhaya, ukulawulwa kweqondo lokushisa kunconywa: 18-22 ° C kwiintsuku zokuqala ezi-3, kulandelwa yifriji.

Unyango lwangaphambili lwesithako lunempembelelo enkulu kwiziphumo. Ikhaphetshu iBlanching imizuzwana engama-30 yehlise isiqulatho sokuqala senitrate ngama-43%, yehlisa incopho yokugqibela ye-nitrite ngama-27%. Ukongeza izithako ezityebileyo ngevithamin C (umzekelo, isitshilisi esitsha okanye izilayi zelamuni) ziphinde zehlise iincopho nge-15% -20%.

3. IziCwangciso zokuSetyenziswa okuKhuselekileyo

Ngokusekwe kwidatha yovavanyo, umda wexesha lokubila unokwahlulwa ube ngamanqanaba amathathu:

Ixesha lengozi (iintsuku 2–5):Amanqanaba e-nitrite adlula umgangatho wokhuseleko waseChina (20 mg / kg) ngamaxesha angama-2-3. Ukusetyenziswa kufuneka kuphetshwe.

Ixesha lotshintsho (iintsuku 6–10):Amanqanaba ehla ngokuthe ngcembe ukuya kuluhlu olusondeleyo olukhuselekileyo.

Ixesha lokhuseleko (emva kosuku lwe-10):I-Nitrite izinzile ngaphantsi kwe-5 mg / kg, ithathwa njengekhuselekile ukusetyenziswa.

Ubuchule obulungiselelweyoinokunciphisa imingcipheko:

Indlela yokugalela ityuwa yethayile (2.5% yetyuwa yokuqala, eyenyuswe ukuya kwi-3% kamva) idityaniswe nokutofa i-5% yebrine endala inciphisa ixesha lengozi ukuya kwiiyure ezingama-36.

Ukuvuselela rhoqo ukwazisa ioksijini eyandisiweyo yokubola kwe-nitrite ngama-40%.

Ukuvezwa ngengozi kwe-nitrite ephezulu, iindlela zokulungisa zingqineke zisebenza:

Ukongeza i-0.1% ye-vitamin C powder kwiiyure ze-6 zanciphisa i-nitrite nge-60%.

Ukudibanisa negalikhi entsha (i-3% ngesisindo) iphumelele iziphumo ezifanayo.

Olu phononongo luqinisekisa ukuba imingcipheko ekutyeni okubiliselwe ekhaya kuyacingeleka kwaye kuyalawuleka. Ngokuqonda i-nitrite dynamics kunye nokuphumeza ulawulo oluchanekileyo-njengokugcina i-2.5% yetyuwa, ukulawulwa kweqondo lokushisa, kunye ne-ingredient pretreatment-abathengi banokonwabela ngokukhuselekileyo ukutya okubilisiweyo. Ukugcina "ilog yokubilisa" ukulandelela ubushushu, ixesha, kunye nezinye iiparameters kucetyiswa, ukuguqula izenzo zasekhitshini zibe ziindlela zenzululwazi ezinolwazi ngomngcipheko.