Vim li cas Rau Rancidity Ntawm Ci Cov Khoom Noj Muaj Rog

Rancidity ntawm cov rog thiab cov rog yog qhov teeb meem tseem ceeb hauv kev tsim khoom thiab muag cov khoom ci (mov ci, ncuav, ncuav ncuav, ncuav ci ncuav). Cov roj oxidation yog ib qho ntawm cov laj thawj tseem ceeb, uas yuav tsum muaj kev tiv thaiv hauv cov txheej txheem ntau lawm.

1. Cov kab mob cov kab mob muaj nplua nuj nyob hauv cov roj ntsha tsis txaus, ua kom nquag plias thiab lwm yam khoom, uas tuaj yeem yooj yim ua kom cov rog hydrolysis thiab oxidation, uas tuaj yeem ua rau cov roj qaug zog. Hmoov nplej tuaj yeem txuas nws lub neej ntev ntev los ntawm kev muab cov noob qoob noob txhuv, tab sis cov vitamin E nyob hauv cov noob nplej kuj tseem raug tshem tawm tib lub sijhawm, yog li txo lub peev xwm antioxidant. Cov tshuaj antioxidant xws li cov vitamin E tuaj yeem ntxiv rau cov roj rau cov khoom lag luam bakery.

2. Cov hmoov nplej tsis tsim nyog xws li lub teeb pom kev zoo tuaj yeem ua rau kom muaj qhov kub ntxhov ntawm cov roj. Piv txwv li, lub teeb ci ci benzoyl peroxide yog qhov muaj zog, uas yuav ua rau yoog thiab tsis huv tom qab cua sov ntawm 100 ° C; yog tias nws siv hauv cov zaub mov oily, nws yuav ua rau roj oxidation thiab rancidity.

3. Cov roj tseem ceeb ntawm cov roj yog cov rog, thiab cov rog yog triacylglyceride muaj li ntawm glycerol thiab fatty acids. Fatty acids uas yog yuav oxidized thiab rancid thaum lub sijhawm cia thiab cua sov, ua rau saj ntawm cov roj. Ib puag ncig ib puag ncig los kuj tseem ceeb, xws li tus cawv ntawm cov pa oxygen hauv huab cua, lub teeb, thiab noo noo hauv roj. Yog li, nws yog qhov yuav tsum tau siv cov ntawv hlau, steel phaj thiab lwm yam khoom ntim rau roj, ntxiv cov tshuaj tiv thaiv kab mob lossis tiv thaiv oxidants kom zoo, thiab khaws lawv nruj me ntsis, tiv thaiv los ntawm lub teeb thiab dej.

4. Qhov teeb meem ntawm rog rancidity nyob rau hauv cov khoom ci yog kev tsis pom zoo. Baiqing Mos Cov Paj Ntaub Ncauj Ncauj Tsis Muaj cov tshuaj ntxiv los ua kom muaj cov tshuaj tua kab mob, thiab nws tus kheej fermented metabolites muaj ntau ntawm cov tshuaj tiv thaiv zoo. Nws yog siv rau hauv cov zaub mov ci los tiv thaiv kev saj ntawm cov rog thiab roj.