![]() |
![]() |
|
Integratori non notificati Discutiamo di tutti gli integratori non vendibili in Italia
Ciao amico visitatore, cosa aspetti? Apri una discussione subito nella sezione Integratori non notificati |
![]() |
|
LinkBack | Strumenti Discussione | Modalità Visualizzazione |
|
(#1)
![]() |
||
Banned
Messaggi: 400
Data registrazione: Jan 2009
|
![]() Testobooster : attualmente quali i migliori ?Quote:
Odio chi utilizza gli integratori senza cognizione di causa! Approfondire, sempre! Altrimenti finiamo tutti col farci infinocchiare dalla pubblicita' e compriamo tribulus, clorofilla e creatina etil estere!!! |
|
|
![]() |
(#2)
![]() |
|
All the Truth Member
Messaggi: 630
Data registrazione: Mar 2008
Età: 53
|
![]() perfettamente d'accordo ..ed io lo faccio sempre...nonostante sono laureato in economia e non capisco una mazza di chimica.....ma quanti si prendono la briga di approfondire ? io dico pochi ! |
|
![]() |
(#3)
![]() |
|
ParentalAdvisoryMember
Messaggi: 336
Data registrazione: Nov 2009
|
![]() Condivido in toto: personalmente per forma mentis sono portato ad approfondire ogni cosa mi interessi e, talvolta, pure quelle che non mi interessano. Ciò non toglie che, nello specifico, si vada incontro a dei limiti oggettivi per chi non abbia una formazione accademica nel campo alle spalle... Per questo motivo non condannerei una richiesta del genere. ![]() |
|
![]() |
(#4)
![]() |
|||
Banned
Messaggi: 400
Data registrazione: Jan 2009
|
![]() Quote:
Quote:
|
||
|
![]() |
(#5)
![]() |
|
ParentalAdvisoryMember
Messaggi: 336
Data registrazione: Nov 2009
|
![]() Ma questo l'ho capito...però se uno non ci arriva per mancanza di background che ci può fare??! Uno IMHO ha il dovere di informarsi, ma con tutta la buona volontà, se non si ha una laurea nel settore... ![]() |
|
![]() |
(#6)
![]() |
|
RealUncensoredMofo
Messaggi: 416
Data registrazione: Jun 2010
Età: 33
|
![]() anche se è un pò OT: parli di etil estere, non è buona a tuo avviso? Non a livello di testobooster ovviamente, in generale, dici che sia meglio la micronizzata? |
|
![]() |
(#7)
![]() |
||
One of Us
Messaggi: 55
Data registrazione: Apr 2010
Età: 49
|
![]() Quote:
Almeno questi erano gli approfondimenti che lessi quanto uscì a suo tempo. Ora la indichi come non buona e hai magari ragione, ma pur approfondendo a suo tempo, questo non lo sapevo. |
|
|
![]() |
(#8)
![]() |
||
ParentalAdvisoryMember
Messaggi: 249
Data registrazione: Aug 2009
Età: 44
|
![]() Quote:
a parte che siete ot qui parla esempio di cee e di kre alkalyn cmq 'Creatine ethyl ester rapidly degrades to creatinine in stomach acid Child R1 and Tallon MJ2 1Department of Life Sciences, Kingston University, Penrhyn Rd, Kingston-upon-Thames, United Kingdom. 2University of Northumbria, Sport Sciences, Northumbria University, Northumberland Building, Newcastle upon Tyne, United Kingdom, DrChild@CR-Technologies.net Creatine ethyl ester (CEE) is a commercially available synthetic creatine that is now widely used in dietary supplements. It comprises of creatine with an ethyl group attached and this molecular configuration is reported to provide several advantages over creatine monohydrate (CM). The Medical Research Institute (CA, USA) claim that the CEE in their product (CE2) provides greater solubility in lipids, leading to improved absorption. Similarly San (San Corporation, CA, USA) claim that the CEE in their product (San CM2 Alpha) avoids the breakdown of creatine to creatinine in stomach acids. Ultimately it is claimed that CEE products provide greater absorption and efficacy than CM. To date, none of these claims have been evaluated by an independent, or university laboratory and no comparative data are available on CEE and CM. This study assessed the availability of creatine from three commercial creatine products during degradation in acidic conditions similar to those that occur in the stomach. They comprised of two products containing CEE (San CM2 Alpha and CE2) and commercially available CM (CreapureÒ). An independent laboratory, using testing guidelines recommended by the United States Pharmacopeia (USP), performed the analysis. Each product was incubated in 900ml of pH 1 HCL at 37± 1oC and samples where drawn at 5, 30 and 120 minutes. Creatine availability was assessed by immediately assaying for free creatine, CEE and the creatine breakdown product creatinine, using HPLC (UV) After 30 minutes incubation only 73% of the initial CEE present was available from CE2, while the amount of CEE available from San CM2 Alpha was even lower at only 62%. In contrast, more than 99% of the creatine remained available from the CM product. These reductions in CEE availability were accompanied by substantial creatinine formation, without the appearance of free creatine. After 120minutes incubation 72% of the CEE was available from CE2 with only 11% available from San CM2 Alpha, while more than 99% of the creatine remained available from CM. CEE is claimed to provide several advantages over CM because of increased solubility and stability. In practice, the addition of the ethyl group to creatine actually reduces acid stability and accelerates its breakdown to creatinine. This substantially reduces creatine availability in its esterified form and as a consequence creatines such as San CM2 and CE2 are inferior to CM as a source of free creatine.'' ------------------------------------------------------------------ ''Kre-alkalyn® supplementation has no beneficial effect on creatine-to-creatinine conversion rates. Tallon MJ1 and Child R2 1University of Northumbria, Sport Sciences, Northumbria University, Northumberland Building, Newcastle upon Tyne, United Kingdom, 2Department of Life Sciences, Kingston University, Penrhyn Rd, Kingston-upon-Thames, United Kingdom. DrTallon@CR-Technologies.net All American Pharmaceutical and Natural Foods Corp. (Billings, MT, USA) claim that Kre-alkalyn® (KA) a “Buffered” creatine, is 100% stable in stomach acid and does not convert to creatinine. In contrast, they also claim that creatine monohydrate (CM) is highly pH labile with more than 90% of the creatine converting to the degradation product creatinine in stomach acids. To date, no independent or university laboratory has evaluated the stability of KA in stomach acids, assessed its possible conversion to creatinine, or made direct comparisons of acid stability with CM. This study examined whether KA supplementation reduced the rate of creatine conversion to creatinine, relative to commercially available CM (CreapureÒ). Creatine products were analyzed by an independent commercial laboratory using testing guidelines recommended by the United States Pharmacopeia (USP). Each product was incubated in 900ml of pH 1 HCL at 37± 1oC and samples where drawn at 5, 30 and 120 minutes and immediately analyzed by HPLC (UV) for creatine and creatinine. In contrast to the claims of All American Pharmaceutical and Natural Foods Corp., the rate of creatinine formation from CM was found to be less than 1% of the initial dose, demonstrating that CM is extremely stable under acidic conditions that replicate those of the stomach. This study also showed that KA supplementation actually resulted in 35% greater conversion of creatine to creatinine than CM. In conclusion the conversion of creatine to creatinine is not a limitation in the delivery of creatine from CM and KA is less stable than CM in the acid conditions of the stomach.'' |
|
|
![]() |
(#9)
![]() |
||
One of Us
Messaggi: 55
Data registrazione: Apr 2010
Età: 49
|
![]() Quote:
![]() ![]() |
|
|
![]() |