Distribution of tocotrienols in rats fed a rice bran tocotrienol concentrate.
To examine the distribution of rice bran tocotrienol (T3), we gave rice bran T3 to rats after considering an acceptable daily intake of vitamin E for humans. Male SD rats (5 weeks of age) were fed for 3 weeks on a commercial diet containing 6.4 mg of vitamin E per 100 g wt and additively received vitamin E or the vehicle (vitamin E-free corn oil) by oral intubation. The animals were randomly divided into 4 groups depending on the type of test diet: control (vehicle), non-T3 (no T3 + 4.3 mg of tocopherol (TOC)/kg body weight (b.w.)/day), low-T3 (0.8 mg T3 + 3.5 mg TOC/kg b.w./day), and high-T3 (3.2 mg T3 + 1.1 mg TOC/kg b.w./day). The control rats and rats in the non-T3, low-T3, and high-T3 groups took 4.3 and 8.6 mg of vitamin E/kg b.w./day, respectively. Rice bran gamma-T3 was significantly distributed to the adipose tissue and increased from 1.1 to 10.2 nmol/g of adipose tissue according to the rice bran T3 intake.
Kawakami
Yuki
Y
Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.
Tsuzuki
Tsuyoshi
T
Nakagawa
Kiyotaka
K
Miyazawa
Teruo
T
D000818:Animals; D000975:Antioxidants / Q000032:analysis / Q000493:pharmacokinetics*; D001835:Body Weight / Q000187:drug effects; D002839:Chromans / Q000097:blood / Q000493:pharmacokinetics; D002851:Chromatography, High Pressure Liquid; D004032:Diet; D015227:Lipid Peroxidation / Q000187:drug effects; D008297:Male; D012275:Oryza / Q000737:chemistry*; D010713:Phosphatidylcholines / Q000378:metabolism; D010714:Phosphatidylethanolamines / Q000378:metabolism; D010743:Phospholipids / Q000097:blood; D051381:Rats; D017207:Rats, Sprague-Dawley; D017392:Thiobarbituric Acid Reactive Substances / Q000032:analysis; D014018:Tissue Distribution; D024505:Tocopherols / Q000097:blood; D024508:Tocotrienols / Q000032:analysis / Q000493:pharmacokinetics*; D014810:Vitamin E / Q000031:analogs & derivatives / Q000097:blood / Q000493:pharmacokinetics
D000975:Antioxidants; D002839:Chromans; D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D010743:Phospholipids; D017392:Thiobarbituric Acid Reactive Substances; D024508:Tocotrienols; D014810:Vitamin E; C013649:plastochromanol 8; D024505:Tocopherols