%0 Journal Article
%T Characterization of High-Value Bioactives in Some Selected Varieties of Pakistani Rice (Oryza sativa L.)
%A Muhammad Zubair
%A Farooq Anwar
%A Muhammad Ashraf
%A Md. Kamal Uddin
%J International Journal of Molecular Sciences
%D 2012
%I MDPI AG
%R 10.3390/ijms13044608
%X The present study reports the composition and variation of fatty acids, sterols, tocopherols and 污-oryzanol among selected varieties namely Basmati Super, Basmati 515, Basmati 198, Basmati 385, Basmati 2000, Basmati 370, Basmati Pak, KSK-139, KS-282 and Irri-6 of Pakistani rice ( Oryza sativa L). Oil content extracted with n-hexane from different varieties of brown rice seed (unpolished rice) ranged from 1.92% to 2.72%. Total fatty acid contents among rice varieties tested varied between 18240 and 25840 mg/kg brown rice seed. The rice tested mainly contained oleic (6841每10952 mg/kg) linoleic (5453每7874 mg/kg) and palmitic acid (3613每5489 mg/kg). The amounts of total phytosterols (GC and GC-MS analysis), with main contribution from 汕-sitosterol (445每656 mg/kg), campesterol (116每242 mg/kg), ˋ 5-avenasterol (89每178 mg/kg) and stigmasterol (75每180 mg/kg) were established to be 739.4 to 1330.4 mg/kg rice seed. The content of 汐-, 污- and 汛-tocopherols as analyzed by HPLC varied from 39.0每76.1, 21.6每28.1 and 6.5每16.5 mg/kg rice seed, respectively. The amounts of different 污-oryzanol components (HPLC data), identified as cycloartenyl ferulate, 24-methylene cycloartanyl ferulate, campesteryl ferulate and 汕-sitosteryl ferulate, were in the range of 65.5每103.6, 140.2每183.1, 29.8每45.5 and 8.6每10.4 mg/kg rice seed, respectively. Overall, the concentration of these bioactives was higher in the Basmati rice cultivars showing their functional food superiority. In conclusion, the tested varieties of Pakistani rice, especially the Basmati cultivars, can provide best ingredients for functional foods.
%K bioactives
%K Basmati rice
%K phytosterols
%K tocopherols
%K oryzanol
%K HPLC
%K GC-MS
%U http://www.mdpi.com/1422-0067/13/4/4608