Qhov sib txawv tseem ceeb ntawm flavonoids thiab isoflavonoids yog tias flavonoids muaj 2-phenylchromen-4-ib pob txha hauv lawv cov qauv tshuaj, thaum isoflavonoids muaj 3-phenylchromen-4-ib pob txha hauv lawv cov qauv tshuaj.
Flavonoids sawv cev rau ib qho ntawm cov loj tshaj plaws thiab feem ntau kawm polyphenolic cov metabolites nyob rau hauv cov nroj tsuag. Lawv muaj ob pawg tseem ceeb raws li cov qauv tshuaj: flavonoids (bio flavonoids) uas muaj 2-phenylchromans qauv thiab isoflavonoids uas muaj 3-phenylchromans qauv. Flavanones, flavones, flavonols, flavan-3-ols, thiab anthocyanidins yog ob peb flavonoids, thaum isoflavones, isoflavans, thiab pterocarpans yog ob peb isoflavonoids. Ob pab pawg muaj cov txiaj ntsig tseem ceeb xws li lub zog antioxidant siab, ua kom lub neej ntev, thiab tswj qhov hnyav.
Flavonoids yog dab tsi?
Flavonoids lossis bioflavonoids yog ib pawg ntawm flavonoids uas muaj 2-phenylchromen-4-ib pob txha hauv lawv cov qauv tshuaj. Cov pab pawg no suav nrog flavanones, flavones, flavonols, flavan-3-ols, thiab anthocyanidins. Nws suav nrog ntau chav kawm ntawm polyphenolic compounds nrog lub zog antioxidant. Lawv feem ntau pom nyob rau hauv nplooj, tawv, keeb kwm, paj, thiab noob ntawm cov nroj tsuag. Ntau tus tswv cuab ntawm pab pawg no tau txais kev saib xyuas dav dav los ntawm pej xeem vim lawv cov txiaj ntsig hauv kev noj zaub mov ntawm tib neeg. Piv txwv li, proanthocyanidins hauv cov txiv hmab txiv ntoo, flavanones (hesperidin) hauv citrus, flavonols (quercetin) hauv dos thiab lwm yam zaub, catechins hauv tshuaj yej ntsuab, thiab anthocyanosides hauv bilberry.
Daim duab 01: Flavonoids
Flavones yog ib qho ntawm cov tswv cuab tseem ceeb ntawm flavonoids. Flavones yog dav faib nyob rau hauv nplooj, paj thiab txiv hmab txiv ntoo. Qhov tseem ceeb ntawm flavones yog celery, parsley, liab peppers, chamomile, mint thiab ginkgo biloba. Flavonols yog flavonoids nrog pab pawg ketonic. Flavonols feem ntau muaj nyob rau hauv ntau yam txiv hmab txiv ntoo thiab zaub. Cov flavonol uas tau kawm tshaj plaws yog kaempferol, quercetin, myricetin thiab fisetin. Flavanones feem ntau muaj nyob rau hauv tag nrho cov txiv hmab txiv ntoo citrus xws li txiv kab ntxwv, txiv qaub, thiab txiv hmab txiv ntoo. Cov flavanones kawm tshaj plaws yog hesperetin, naringenin thiab eriodictyol. Ntxiv mus, flavan-3-ols catechin muaj ntau nyob rau hauv txiv tsawb, txiv apples, blueberries, ntsuab tshuaj yej, txiv duaj, thiab pears. Anthocyanins kuj yog ib tug tswv cuab ntawm pab pawg no; lawv yog cov pigments lub luag haujlwm rau cov xim hauv cov nroj tsuag, paj thiab txiv hmab txiv ntoo. Cov anthocyanins tau kawm ntau tshaj plaws yog cyanidin, delphinidin, malvidin, pelargonidin, thiab peonidin.
Isoflavonoids yog dab tsi?
Isoflavonoids yog ib pawg ntawm flavonoids uas muaj 3-phenylchromen-4-ib pob txha hauv lawv cov qauv tshuaj. Isoflavonoids xws li isoflavones tsis muaj hydroxyl pab pawg hloov ntawm txoj hauj lwm 2. Isoflavonoids yog ib chav kawm ntawm biologically active phenolic tebchaw. Raws li lawv cov tshuaj lom neeg yog los ntawm cov tshuaj estrogen receptor, qee zaum lawv raug hu ua "phytoestrogens". Txawm hais tias kev kho mob thiab kev tshawb fawb hauv zej zog tsis ntseeg txog lawv txoj kev siv, lawv tau siv dav hauv ntau yam khoom noj. Qee cov isoflavonoids tau txheeb xyuas tias yog co toxins, xws li biliatresone. Biliatresonemay ua rau biliary atresia thaum me nyuam mos raug rau cov khoom cog. Cov pab pawg isoflavonoids tau faib dav rau hauv pawg xws li isoflavones, isoflavoones, isoflavans, pterocarpans, thiab rotenoids.
Daim duab 02: Isoflavonoids
Isoflavonoids tau muab los ntawm txoj kev flavonoid biosynthesis ntawm liquiritigenin lossis naringenin. Cov isoflavonoids tau kawm ntau tshaj plaws yog genistein, daidzein, thiab homoisoflavonoids.
Dab tsi yog qhov zoo sib xws ntawm Flavonoids thiab Isoflavonoids?
- Flavonoids thiab isoflavonoids yog polyphenolic theem nrab metabolites.
- Ob leeg yog muab los ntawm cov nroj tsuag.
- YLawv muaj cov tshuaj antioxidant.
- Ob leeg yog phytonutrients (cov tshuaj cog qoob loo).
Qhov txawv ntawm Flavonoids thiab Isoflavonoids yog dab tsi?
Flavonoids muaj 2-phenylchromen-4-ib pob txha hauv lawv cov qauv tshuaj. Hauv qhov sib piv, isoflavonoids muaj 3-phenylchromen-4-ib qaum hauv lawv cov qauv tshuaj. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm flavonoids thiab isoflavonoids. Tsis tas li ntawd, flavonoids muaj cov haujlwm antioxidant tsawg dua piv rau isoflavonoids.
Cov ntawv sau hauv qab no qhia qhov sib txawv ntawm flavonoids thiab isoflavonoids hauv daim ntawv teev npe.
Summary – Flavonoids vs Isoflavonoids
Flavonoids yog ib chav kawm ntawm polyphenolic theem nrab metabolites pom hauv cov nroj tsuag. Lawv tau muab los ntawm txoj kev flavonoid biosynthesis. Lawv muaj cov qauv dav dav ntawm 15-carbon skeleton. Cov qauv no muaj ob lub nplhaib phenyl thiab ib lub nplhaib heterocyclic. Raws li cov qauv tshuaj, lawv yog ob hom: flavonoids thiab isoflavonoids. Flavonoids muaj 2-phenylchromen-4-ib pob txha hauv lawv cov qauv tshuaj. Hauv qhov sib piv, isoflavonoids muaj 3-phenylchromen-4-ib qaum hauv lawv cov qauv tshuaj. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm flavonoids thiab isoflavonoids.
