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INTRODUCTIONProteindeficiencyisoneofthemostseriousproblemsintheworld ,especiallyindevelopingcountries.Ithasbeenestimatedthatabouttwo thirdsofthepopulationintheworldaresufferingfromlackofprotein ,especiallyhigh qualityani malprotein (Liu ,1 992 ) .Itistherefore… 相似文献
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