World Grain - May 2008 - 52

RICE QUARTERLY: RICE PROCESSING DEVELOPMENTS IN CHINA

Iron roll polishers are commonly used in China.

technology, as rational selection of the
fine grinding machine and technology
is essential. According to the different
materials of the whitener mill rollers,
the rice milling machines used in Chinese rice processing enterprises can be
classified into two kinds: emery roll
polishers (45%) and iron roller polishers (55%)
To meet the Chinese National Standard and ensure quality of the finished

rice product, rice is graded by separation of the unqualified broken rice and
removing rice bran powder and rice
tips. The main device for whitened rice
grading used in Chinese rice processing
enterprises is a rice grading sieve or a
grading machine by rice thickness. Rice
is generally graded into special grade
rice, common rice, big broken rice and
small broken rice. In the processing of
high quality rice, more than 40% of the
Chinese rice processing enterprises use
rice grading sieves combined with blasting rice cleaners.
Color sorting - a process in which
discolored rice and impurities are removed - is the last quality assurance
procedure for head rice. The key performance indicators of color sorters are
yield and effect of color sorting. Currently, color sorters are widely used in
Chinese rice processing enterprises.
Polishing can effectively remove the

rice bran powder and improve the antioxidant capacity of rice, therefore prolonging its shelf life. More than 80% of
the Chinese rice processing enterprises
use polishers made in China, while the
remaining 20% use polishers made primarily by foreign suppliers.
Blended rice refers to putting different kinds of rice together in proper
proportion to meet the consumption demands. Blended rice is often of different grades or edible qualities. Blending
by gravity and other types of blending
equipment are used in processing. Rice
blending technology is used in more
than 60% of Chinese rice processing
enterprises.
RICE PRODUCTS
Enriched rice refers to adding nutritional substances. During processing,
the upper layer and embryo containing many nutritional substances are

Turn to United Milling
Systems for the original
stone mill and millstone
The millstone is the most essential part of a mill. The quality
of the millstone is decisive both for the grinding capacity
of the mill and the quality of the ground product. Today's
special design of the Engsko artificial millstones is a result
of practical experience gained during more than 100 years
ears
of production. The stones are produced in sizes from 250
50
mm to 1500 mm and composed of particularly high quality
uality
European stone materials.

There are many imitations, but only one
original. Look for the Engsko seal of quality,
cast in the rear side of the stone. That is your
guarantee for the original millstone.

UNITED MILLING SYSTEMS
Banemarksvej 50A * DK-2605 Broendby * Denmark
Phone (+45) 70 22 27 11 * Fax (+45) 70 22 27 12
Web: www.ums.dk * E-mail: umsmail@ums.dk
For more information, see Page 82.

May 2008 / World Grain / www.World-Grain.com

http://www.ums.dk http://www.World-Grain.com

World Grain - May 2008

Table of Contents for the Digital Edition of World Grain - May 2008