Ama-antioxidants

-Delile

• Umsebenzi
• Ukuhlukaniswa
• Ukubaluleka
• Izibonelo zama-Antioxidants
• Kungakusiza:

I- ama-antioxidants ama-molecule anomsebenzi wokubambezela noma wokuvimbela i-oxidation yamanye ama-molecule: isisusa salezi zingqamuzana ukuvimba umphumela olimazayo wama-radicals wamahhala, akhiqizwa yi-oxidation futhi ukuqala kokuphendula kwamaketanga okulimaza amaseli.

I- ama-antioxidants bayakwazi ukuqeda lezi ukusabela, kususwa izixhumanisi zamahhala ezinamandla futhi kuvimbela okunye ukusabela kwe-oxidation, Ukugqwala ngokuphikisana nabo.

Umsebenzi

Izindlela ama-antioxidants afeza ngazo umsebenzi wazo ziyahlukahluka kuye ngecala, kepha okuvame kakhulu yi- ukuxhumana okuqondile nezinhlobo ezisebenzayo, lapho i-antioxidant isebenza ngaphansi kwayo isisimamisi, ngokudluliselwa kwe-electron ezinhlotsheni ezisebenzayo: ngale ndlela, i-radical ilahlekelwa isimo sayo.

Lokhu kunomphumela wamangqamuzana wokuthi i-antioxidant yona iba yi-radical yamahhala, kepha enokusebenza okuncane noma okungenayo nhlobo kwimvelo yayo. Ezinye izindlela zokusebenza kwama-antioxidants kungukuqiniswa kwama-radicals wamahhala ngokusebenzisa i- ukudluliswa okuqondile kwe-athomu ye-hydrogen.

Ukuhlukaniswa

Ama-antioxidants ajwayele ukuhlukaniswa phakathi kwalawo ajwayelekile i-biosynthesized ngumzimba, nalabo abangena kukho ngokudla: phakathi kokuqala kukhona kokubili i-enzymatic ne-non-enzymatic, kuyilapho lezi zamuva zihlukaniswa phakathi kwamavithamini angama-antioxidants, ama-carotenoids, ama-polyphenols, namakhemikhali angenzi noma yiziphi izigaba ezintathu ezedlule .

Bhekafuthi: Izibonelo Zokulandelela Izinto

Ukubaluleka

Ngomqondo wokubambezela inqubo ye-oxidation, ama-antioxidants nawo yehlisa ijubane inqubo yokuguga, silwa nokonakala nokufa kuka amaseli lokho kubangela ama-radicals amahhala, futhi anomthelela omkhulu ekuwohlokeni kwesikhumba nomzimba. Ukwehluleka komzimba ngokwawo ukunciphisa ama-radicals amahhala lapho kutholakala khona amandla nsuku zonke ukuthi asebenzise ukudla okunezakhi ze-antioxidant, ukuvimba umphumela wawo.

Ngakolunye uhlangothi, kunophenyo oluningi olubheka ukuthi ukudla izidlo lapho ukusetshenziswa kwama-antioxidants kuvela kaningi kungaba umlingani osebenzayo ekulweni nomdlavuza. Lokhu kungabangelwa ukuvinjelwa kwe- amaseli amabi, noma ngokusabela okusebenzayo kakhudlwana amasosha omzimba ngokujwayelekile.

Ezinye izimo ezinjengokwehla kwe-macular, amasosha omzimba acindezelwe ngenxa yokungondleki kahle, kanye i-neurodegeneration okubangelwa yingcindezi ye-oxidative, kungavinjelwa ngokusebenzisa ama-antioxidants.

Ukukala izinga lama-antioxidants ekudleni akuwona umsebenzi olula, futhi njengamanje isibonakaliso esihle kunazo zonke yi umthamo we-oxygen radical absorbance. Ama-antioxidants atholakala ngamanani ahlukahlukene ekudleni okufana nemifino, izithelo, okusanhlamvu, imidumba namantongomane.

Bhekafuthi: Yini ama-macronutrients nama-micronutrients?

Izibonelo zama-Antioxidants

Kungakusiza:

• Amaprotheni Izibonelo
• Izibonelo zama-Enzyme (nomsebenzi wazo)
• Izibonelo zama-carbohydrate
• Izibonelo ze-Lipids