Phakathi kwezinto ezibhakwayo, imikhiqizo eminingi yamakhekhe namakhukhi iqukethe amafutha amaningi. Eminye yale mikhiqizo inomswakama ophansi kakhulu, ukuguga akunamthelela omncane empilweni yayo yokugcina, futhi ukubola kwamafutha kuyisici esiyinhloko esithinta ukuqina kwawo kokugcina.

Ngaphandle kwezakhiwo zamafutha ngokwawo, i-rancidity yamafutha ihlobene ngokuqondile nezinga lokushisa, umswakama, umoya, ukukhanya, ama-enzyme nama-ion ensimbi njengethusi nensimbi ezimweni zokugcina.

Ukuze kwandiswe ukugcinwa kokuqina kwemikhiqizo, amanye ama-antioxidants avame ukungezwa kuwoyela noma ekudleni okuqukethe amafutha amaningi ukuze kubambezeleke noma kuvinjwe i-rancidity kawoyela, engakwazi nje ukwelula isikhathi sokugcina nempilo yeshelufu yokudla, ilethe izinzuzo ezinhle zezomnotho kubakhiqizi nabasabalalisi, kodwa futhi ilethe umuzwa ongcono wokuphepha kubathengi.

1. Ama-antioxidants emvelo

Ama-antioxidants emvelo anobuthi obuncane futhi aphephile ukuwasebenzisa, futhi ukunakwa okwengeziwe kukhokhwa kuwo. I-Tocopherol, i-guaius resin kanye ne-tea polyphenols zivame ukusetshenziswa kumakhekhe.

Isibonelo, i-polyphenols yetiye, eyaziwa nangokuthi i-antioxidant, i-vitamin polyphenols, i-antihalin, i-polyphenols ephuzi ephuzi kuya ensundu ene-flavour encane yetiye, i-powdery eqinile noma i-crystal, i-astringent, i-soluble kalula emanzini, i-soluble kancane emafutheni, ukumelana nokushisa okuhle, ukumelana ne-asidi enhle, i-polyphenols yetiye esetshenziselwa amakhekhe, ingajulisa umbala, ithuthukise izakhiwo ze-sensory, i-anticor ne-oxision, ingakwazi ukumelana ne-oxision kanye nekhwalithi ye-anticor. ukulondolozwa. Inani elingeziwe ngu-0.05%~0.2%.

2. Hlanganisa ama-antioxidants

Iningi lama-antioxidant ahlanganisiwe angama-phenol compounds, futhi uma isibalo esincane samaqembu e-hydroxyl eringini ye-benzene, kuba ngcono umphumela we-antioxidant.

Okuvame ukusetshenziswa kukhekhe i-butyl hydroxyanisole (BHA), dibutylhydroxytoluene (BHT), tert-butylhydroquinone (TBHQ), propyl gallate (PG), njll., ngenxa yezinkinga zokuphepha, umthamo kufanele ulawulwe ngokuqinile.

3.Ama-Synergists

Uma usebenzisa ama-antioxidants e-phenolic, uma ezinye izinto ezine-acidic zengezwa ngesikhathi esifanayo, umphumela we-antioxidant uzoba ngcono, ikakhulukazi ngoba lezi zinto ezine-acidic zingakwazi ukugaya i-ion yensimbi njengethusi nensimbi, ukuze lezi ion zikwazi ukudlula, futhi zingabe zisakhuthaza i-oxidation yamafutha. Okuvame ukusetshenziswa kumakhekhe yi-antioxidant corbic acid, citric acid, njll., inani ngokuvamile liyi-1/4 kuya ku-1/2 yama-antioxidants.

Kubalulekile ukuqaphela ukuthi inani lama-antioxidants asetshenziswa ezinhlotsheni ezahlukene zokudla nezindlela zokucubungula nalo lihlukile. Ekusetshenzisweni kwangempela, kufanele isetshenziswe ngokuhambisana ngokuqinile nezinhlinzeko ezijwayelekile ezihambisanayo, futhi umthamo akufanele ukhuliswe ngokungaboni.