STUDIES ON SIX MINERAL ELEMENT CONTENTS OF RICE BRAN AND MILLED RICE FROM THREE COLOR RICE CULTIVARS / 营养学报

ABSTRACT

Objective: To investigate six mineral element contents of rice bran and milled rice from three color rice cultivars (white rice, red rice, black rice). Methods: Select 36 typical cultivars and determine Se, Zn, Fe, Ca, Mn, Cu contents in their rice bran and milled rice with AFS-2201 atomic fluorescent spectrometer and AA-680 atomic absorption spectrometer. Results: 1. The six mineral element contents of rice bran were 2.58, 3.35, 10.04, 4.58, 12.79 and 6.59 times as those of milled rice respectively. 2. The Ca content of black milled rice was significantly higher than that of white and red milled rice. The Mn content in rice bran of white rice was significantly higher than those of black and red rice. Other mineral element contents were not significantly different. 3. For rice bran and milled rice of different cultivars, the contents of each mineral element in three color rices varied greatly. Conclusions: 1. The content of six minerals in rice bran was 5.66 times on average as that in milled rice in all cultivars of three color rice. 2. Eight cultivars of the highest content of each mineral in rice bran and milled rice were recommended for commercial use and human consumption.