Pakati pezvinhu zvakabikwa, zvakawanda zvepastry uye makiki ane mafuta akawanda. Zvimwe zvezvigadzirwa izvi zvine hunyoro hwakaderera, kuchembera hakuna zvakunoita pahupenyu hwavo hwekuchengeta, uye kunyungudika kwemafuta ndicho chinhu chikuru chinokanganisa kugadzikana kwavo kwekuchengetedza.

Pamusoro pezvinhu zveoiri pachayo, rancidity yemafuta inoenderana zvakananga nekushisa, humidity, mhepo, chiedza, enzymes uye ion simbi dzakadai semhangura nesimbi mumamiriro ekuchengetedza.

Kuti uwedzere kugadzikana kwekuchengetwa kwezvigadzirwa, mamwe maoxidants anowanzo kuwedzerwa kumafuta kana chikafu chine mafuta akawanda kunonoka kana kudzivirira rancidity yeoiri, iyo isingangowedzere nguva yekuchengetedza uye hupenyu hwesherufu hwechikafu, inounza yakanaka mabhenefiti ehupfumi kune vanogadzira uye vanogovera, asi zvakare inounza pfungwa iri nani yekuchengetedza kune vatengi.

1.Natural antioxidants

Natural antioxidants haina muchetura uye yakachengeteka kushandisa, uye kutarisisa kwakawanda kunobhadharwa kwavari. Tocopherol, guaius resin uye tii polyphenols zvinowanzoshandiswa mumakeke.

Semuenzaniso, tii polyphenols, inozivikanwawo se antioxidant, vhitamini polyphenols, antihalin, yakachenuruka yero kune shava aqueous mhinduro ine zvishoma tii inonaka, powdery yakasimba kana crystal, astringent, inonyungudika nyore mumvura, inonyungudika zvishoma mumafuta, kupisa kwakanaka kwekudzivirira, kunaka kweasidhi, tii polyphenols inoshandiswa mumakeke, inogona kudzika ruvara, kuvandudza, kunzwa kunoshanda uye anticor hunhu uye kurwisa mhando yeoxision hunhu. kuchengetedza. Mari yekuwedzera ndeye 0.05% ~ 0.2%.

2.Synthesize antioxidants

Mazhinji eyakagadzirwa antioxidants ndeye phenol makomisheni, uye kushoma kwehuwandu hwemapoka ehydroxyl paringi yebenzene, zviri nani iyo antioxidant mhedzisiro.

Inowanzo shandiswa mumakeke butyl hydroxyanisole (BHA), dibutylhydroxytoluene (BHT), tert-butylhydroquinone (TBHQ), propyl gallate (PG), nezvimwewo, nekuda kwematambudziko ekuchengetedza, dosi inofanira kunyatsodzorwa.

3.Synergists

Paunenge uchishandisa phenolic antioxidants, kana zvimwe acidic zvinhu zvakawedzerwa panguva imwe chete, iyo antioxidant mhedzisiro ichava nani, kunyanya nekuti izvi zvine acidic zvinhu zvinogona chelate simbi ions semhangura nesimbi, kuitira kuti ion idzi dzinogona kupfuudzwa, uye dzisisakurudzire oxidation yemafuta. Inowanzo shandiswa mumakeke ndeye antioxidant corbic acid, citric acid, nezvimwewo, mari yacho inowanzo 1/4 kusvika 1/2 ye antioxidants.

Izvo zvakakosha kuti uzive kuti huwandu hwema antioxidants anoshandiswa mumhando dzakasiyana dzechikafu uye nzira dzekugadzirisa zvakare dzakasiyana. Mukushandiswa chaiko, inofanirwa kushandiswa zvakanyatsoenderana neyakajairwa chiyero, uye dosi haifanirwe kuwedzera nebofu.