Izvor vitamina B12 za vegane
Ne, ali veganka sam preko 7 godina, a koliko znam u veganskoj hrani nema izvora spomenutog vitamina.Luna je napisao/la:Zakaj? Bio ti je prethodno utvrđen nedostatak?miumiu je napisao/la:Pijem one VEG1 suplemente već 9 mjeseci.
Zadnja izmjena: miumiu, dana/u 07 ruj 2008, 16:33, ukupno mijenjano 1 put.
Informaciju da veganska hrana sadrži sve potrebne sastojke *osim* vitamina B12 naći ćeš na većini *veganskih* web sajtova i u veganskoj literaturi. To ni po čemu nije reklama za veganstvo, naprotiv, to je često argument protiv veganstva. Zato mislim da je besmislena ideja da to pišu da bi nešto prodali.aspalatus je napisao/la:ma cujte, nije problem popit tabletu...to je najlakse, al ja sam nekako dalmatinski dispetozasta i opirem se uvijek kad mi netko pokusava uvaliti neke svoje prozvode ( od kojih zivi) pod MUST...sve mi to lici na svak svog konja hvali i slicno..a drugo, nezamislivo mi je da smo tako "faliveni" odnosno da ne mozemo procistit svoje zivljenje do te mjere da nam ne treba nista sto je iskemijano u nekom laboratoriju...blah mozda sam konzerva
waits istina je da se ne bi trebali igrat sa zdravljem , ali i sam zivot je majstorska igra.
"Nešto" iz laboratorija nam treba zato što smo sjebali prirodu: Koristimo gomile kemikalija koje ubijaju sve živo, pa tako i bakterije koje žive na tlu i na bilju proizvode B12. Živimo krajnje neprirodne živote. Toliko smo na to navikli da to niti ne vidimo.
Zaboravljaš da u zemlji više nema tih bakterija i osiromašena je svime pa i tim kobaltom koji je potreban za nastanak B12.aspalatus je napisao/la:ma cekaj ogi...ti imas vrt jel da? pa nije valjda da nikad nisi pojeop nesto onako jos medu gredicama?ja sam jela i zemlju i jos ponekad imam tu potrebu...mislim da smo svi previse zabrinuti oko cistoce...ok nije da ja sad jedem sve po putu i silicno ali ako imas svoje povrce zasto bi ga morao prati?...mozda od zemlje ako je sve ogoljeno ispod biljke pa kad se zalijeva prska blato po liscu? mozda se ne bi trebalo bas sve tako dobro prati ( mislim na vas koji imate taj blagoslov da imate svoj komadic zemlje)
Da, u metabolizmu se navodno nešto izgubi.Medo je napisao/la:Nije li to onda predoziranje?miumiu je napisao/la: VEG1 sadrže 10 mikrograma b12 tj.1000% RDA, u formi cyanocobalamina.Je li ono uopće moguće?
Ili se u metabolizmu nešto izgubi, pa je zato u jednu tabletu za svaki slučaj natrpana desetorostruka doza?
Brewer's and nutritional yeasts do not contain B12 unless they are fortified with it.
http://www.veganhealth.org/b12/vegansources
http://www.veganhealth.org/b12/vegansources
Meni je jedna prijateljica jednom donjela iz engleske Marmite (marmajt). To je pivski kvasac koji sadrži B12. Mislim da je obogaćen, a ne da se prirodno tu nalazi. Uglavnom, ima ljepljivu konzistenciju. Kao jako gusti med, recimo. I vrlo neobičan okus, jako slan i po kvascu. Mislim da se večini ne bi svidio. Meni je bio ok u maloj količini u kombinaciji s nečim neutralnim.ogi je napisao/la:Brewer's and nutritional yeasts do not contain B12 unless they are fortified with it.
http://www.veganhealth.org/b12/vegansources
http://en.wikipedia.org/wiki/Marmite
Koliko vidim toga bi se trebalo dosta pojesti da bi se podmirila RDA. Teško izvedivo.
Origin of B12 in Supplements and Fortified Foods
Streptomyces griseus, a bacterium once thought to be a yeast, was the commercial source of vitamin B12 for many years.8,9 The bacteria Propionibacterium shermanii and Pseudomonas denitrificans have now replaced S. griseus.10 At least one company, Rhone Poulenc Biochimie of France, is using a genetically engineered microorganism to produce B12.
Streptomyces griseus, a bacterium once thought to be a yeast, was the commercial source of vitamin B12 for many years.8,9 The bacteria Propionibacterium shermanii and Pseudomonas denitrificans have now replaced S. griseus.10 At least one company, Rhone Poulenc Biochimie of France, is using a genetically engineered microorganism to produce B12.
mozda je to samo ispiranje mozga...eto mene je bas dojmio taj lik sa svojom obitelji i njegova prica mi je puno bliza intuitivno osjecam da je lik u pravu..ti si 7 godina vegan a on je raw vegan od 72 godine znaci, on je 36 ( rijecima: tridesetsest godina vegan bez tabletica ...i cila njegova obitelj ...vjerovatno kad kuhas hranu onda se i to malo sta ga ima izgubi ali kad jedes sirovo onda je jos uvik tu iako u malim kolicinama ( i ne trebaju nam velike kolicine koliko sam skuzila)miumiu je napisao/la:
Zaboravljaš da u zemlji više nema tih bakterija i osiromašena je svime pa i tim kobaltom koji je potreban za nastanak B12.
Ako jos uvijek nisi out, procitaj ove zanimljive clanke: http://www.veganhealth.org/b12/Luna je napisao/la:Luna - over & out.
Procitajte svi..
The cyanide in cyanocobalamin is in amounts small enough not to be harmful for everyone except possibly those with cyanide metabolism defects (see the Safety section of Sources of B12 for Vegans and the Cyanide Metabolism Defects section of People Who Should Not Take the Cyanocobalamin Form of B12
In rare cases, some infants cannot convert cyanocobalamin to an active form of vitamin B12 and thus cannot rely on cyanocobalamin supplements.
In rare cases, some infants cannot convert cyanocobalamin to an active form of vitamin B12 and thus cannot rely on cyanocobalamin supplements.
Zadnja izmjena: Ogi, dana/u 09 vel 2008, 22:34, ukupno mijenjano 1 put.
Methylmalonic Acid (MMA)
The second coenzyme form of B12, adenosylcobalamin, takes part in the conversion of methylmalonyl-CoA to succinyl-CoA. When B12 is not available, methylmalonyl-CoA levels increase. Methylmalonyl-CoA is then converted to methylmalonic acid (MMA) which then accumulates in the blood and urine. Since B12 is the only coenzyme required in this pathway, MMA levels are the best indicators of a B12 deficiency.
High MMA levels can also (but rarely) be caused by genetic defects, kidney failure, low blood volume, gut bacteria changes, pregnancy, and thyroid disease.9,10
A normal serum MMA level is .07 to .27 µmol/l.
The second coenzyme form of B12, adenosylcobalamin, takes part in the conversion of methylmalonyl-CoA to succinyl-CoA. When B12 is not available, methylmalonyl-CoA levels increase. Methylmalonyl-CoA is then converted to methylmalonic acid (MMA) which then accumulates in the blood and urine. Since B12 is the only coenzyme required in this pathway, MMA levels are the best indicators of a B12 deficiency.
High MMA levels can also (but rarely) be caused by genetic defects, kidney failure, low blood volume, gut bacteria changes, pregnancy, and thyroid disease.9,10
A normal serum MMA level is .07 to .27 µmol/l.
Why Methylcobalamin B-12?
Methylcobalamin is the Bio-Available B-12.
Methylcobalamin B-12 is active immediately upon absorption, while cyanocobalamin must be converted to methylcobalamin by the body before it can be used. Methylcobalamin B-12 is the neurologically active form of B-12. It is essential for maintaining the integrity of the nervous system. A deficiency principally affects the peripheral nerves and, in later stages, the spinal cord. B6, B12, and folic acid are necessary for the metabolism of homocysteine.
Methylcobalamin is the Bio-Available B-12.
Methylcobalamin B-12 is active immediately upon absorption, while cyanocobalamin must be converted to methylcobalamin by the body before it can be used. Methylcobalamin B-12 is the neurologically active form of B-12. It is essential for maintaining the integrity of the nervous system. A deficiency principally affects the peripheral nerves and, in later stages, the spinal cord. B6, B12, and folic acid are necessary for the metabolism of homocysteine.