4. Conclusions
RF heating uniformity of rough and brown rice was improved by
50 C hot air surface heating, sample movement, a twice mixing,
and holding 5 min at the hot air of 50 C. High temperatures
resulted in low survival rate of adult S. oryzae in rough, brown, and
milled rice. When RF heating to 50 C and the hot air holding time
increased from 0 to 6 min, the 100% mortality of adult S. oryzae was
obtain and the quality parameters of RF treated milled rice had no
significant changes. This study provided a solid basis in developing
a practical non-chemical alternative S. oryzae control methods for
rough, brown, and milled rice. The future study is desirable to scale
up the treatment protocol for continuous industry applications.