Nutraceutical concentrations within the bran of various rice kernel thickness fractions

被引:52
作者
Rohrer, CA [1 ]
Siebenmorgen, TJ [1 ]
机构
[1] Univ Arkansas, Dept Food Sci, Fayetteville, AR 72704 USA
关键词
D O I
10.1016/j.biosystemseng.2004.04.009
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
Several important nutraceutical compounds, such as tocotrienols, tocopherols, and oryzanots, can be extracted from rice bran, a by-product of milling. This study was conducted to not only provide information regarding nutraceutical concentrations within the rice kernel based on bran collected from successive milling, but also to determine levels of nutraceutical concentrations across several different thickness fractions. Nutraceutical compounds were measured in the bran from two long-grain rice varieties, Cypress and Drew. Rough rice was separated into three thickness fractions (< 1(.)84, 1(.)84-1(.)98, and > 1(.)98 mm) and each fraction milled for three successive 10 s milling durations. Bran was collected from each milling duration of each thickness fraction to allow quantification of the nutraceutical content. Results showed that bran collected from rice milled for longer durations (30 s) had lower levels of tocotrienols and tocopherols compared to bran from shorter milling durations (10 s). The highest concentration of oryzanols was in the rice bran from the first 10 s milling duration. Overall, compared to bran from thinner kernels (< 1(.)84 mm), the bran from thicker kernel fractions contained a higher content of nutraceuticals. (C) 2004 Silsoe Research Institute. All rights reserved Published by Elsevier Ltd.
引用
收藏
页码:453 / 460
页数:8
相关论文
共 28 条
[1]   ULTRASTRUCTURE OF MATURE UNGERMINATED RICE (ORYZASATIVA) CARYOPSIS - CARYOPSIS COAT AND ALEURONE CELLS [J].
BECHTEL, DB ;
POMERANZ, Y .
AMERICAN JOURNAL OF BOTANY, 1977, 64 (08) :966-973
[2]   INHIBITION OF SMOOTH-MUSCLE CELL-PROLIFERATION AND PROTEIN-KINASE-C ACTIVITY BY TOCOPHEROLS AND TOCOTRIENOLS [J].
CHATELAIN, E ;
BOSCOBOINIK, DO ;
BARTOLI, GM ;
KAGAN, VE ;
GEY, FK ;
PACKER, L ;
AZZI, A .
BIOCHIMICA ET BIOPHYSICA ACTA, 1993, 1176 (1-2) :83-89
[3]   Effect of rice kernel thickness on degree of milling and associated optical measurements [J].
Chen, H ;
Siebenmorgen, TJ .
CEREAL CHEMISTRY, 1997, 74 (06) :821-825
[4]   Inhibition of proliferation of estrogen receptor-negative MDA-MB-435 and -positive MCF-7 human breast cancer cells by palm oil tocotrienols and tamoxifen, alone and in combination [J].
Guthrie, N ;
Gapor, A ;
Chambers, AF ;
Carroll, KK .
JOURNAL OF NUTRITION, 1997, 127 (03) :S544-S548
[5]  
Jariwalla RJ, 2001, DRUG EXP CLIN RES, V27, P17
[6]   CAUSE OF VARIETAL DIFFERENCE IN INSULIN AND GLUCOSE RESPONSES TO INGESTED RICE [J].
JULIANO, BO ;
GODDARD, MS .
QUALITAS PLANTARUM-PLANT FOODS FOR HUMAN NUTRITION, 1986, 36 (01) :35-41
[7]  
Juliano BO., 1985, rice: chemistry and technology, V2nd, P17
[8]  
KRISHNA AGG, 1984, J FOOD SCI TECH MYS, V21, P222
[9]  
KUMARAVEL S, 1985, J FOOD SCI TECH MYS, V22, P220
[10]   Effects of commercial processing on antioxidants in rice bran [J].
Lloyd, BJ ;
Siebenmorgan, TJ ;
Beers, KW .
CEREAL CHEMISTRY, 2000, 77 (05) :551-555