Cereal Chem 58:148 - 152.  |  VIEW ARTICLE
Distribution of Elements in the Rice Kernel Determined by X-Ray Analysis and Atomic Absorption Spectroscopy.

E. Dikeman, D. B. Bechtel, and Y. Pomeranz. Copyright 1981 by the American Association of Cereal Chemists, Inc. 

Elemental compositon of rice cultivars Caloro and S6 were determined by atomic absorption spectroscopy for hand-dissected kernel fractions. Elemental composition was also conducted by the combined techniques of scanning electron microscopy and X-ray analysis on selected tissues of Caloro rice. The rice husk was rich in total ash, had large amounts of Si and small amounts of P, and was relatively high in K, Ca, Mn, and Fe and relatively low in Mg, Zn, and Cu. The aleurone-pericarp fraction was relatively rich in protein and most mineral components, including P, K, Mg, Zn, Fe, and Mn. The aleurone and germ contained a large amount of K, Mg, and P but relatively little Ca. The major mineral components of the low-ash starchy endosperm were P and K.