Determination of Selenium Contents for Some Chemical Forms in Rice Rich-Selenium
- VernacularTitle:富硒米中某些化学形态硒含量的测定
- Author:
Rongpu YANG
;
Qiaolun CHEN
;
Yongneng LIANG
;
Chengen MEI
;
Baozhen HUANG
;
Shixian FAN
;
Rujun XIE
;
Zhongxing YANG
- Publication Type:Journal Article
- From:
Journal of Sun Yat-sen University(Medical Sciences)
2001;22(1):33-34,40
- CountryChina
- Language:Chinese
-
Abstract:
【Objective】 Selenium (Se) contents of some chemical forms as total Se,inorganic Se,organic Se and selenomethionine (SeMet) in rice e nriched-Se were determined, in order to provide scientific basis for applying r ice enriched-Se to cancer prevention. 【Methods】 Fluorometric determination wi th 2,3-diaminonaphthalene (2,3-DAN) for total Se, inorganic Se and organic Se, and with CNBr-2,3-DAN for SeMet. 【Results】 Total Se contents of rice enrich ed-Se reaping in summer and autumn were (2.71±0.97) μg/g, (9.87±1.18 ) μg/g, respectively, both higher than that of ordinary rice (P<0.001); the organic Se occupying over 99% of total Se were 2.68, 9.77 μg/g, respectively . Main component of the organic Se was SeMet, and its Se content (Se-SeMet) was (1.45±0.67) μg/g for rice enriched-Se reaping in summer, (4.96±0.98) μ g/g in autumn,and their contents/total Se contents were 53.5, 50.5 %, respecti vely. 【Conclusions】 Most part of Se in rice enriched-Se was natural organic Se and main component of the organic Se was SeMet.
