现代食品XIANDAISHIPIN68/工艺技术ProcessTechnologydoi:10.16736/j.cnki.cn41-1434/ts.2023.15.016酱油种曲四阶段培养法及其在圆盘制曲中的应用研究ResearchontheFour-StageCultureMethodofSoySauceKojiandItsApplicationinDiscKojiMaking◎闫景勇,刘建华,阮冲冲,李洁珠(广东厨邦食品有限公司,广东阳江529500)YANJingyong,LIUJianhua,RUANChongchong,LIJiezhu(GuangdongChubangFoodCo.,Ltd.,Yangjiang529500,China)摘要:本研究在常规酱油种曲培养三阶段后增加种曲预处理期,使成熟种曲的孢子在种曲机内达到发芽状态而获得制曲菌种,再将其接种至原料并进行圆盘制曲。结果表明,在第4阶段培养时,使用含10%头油的加湿水、加湿量为200mL·min-1、0~4h不通风、4h后以4~6m³·h-1持续通风的工艺条件,培养10~12h获得制曲菌种,该方法可使制曲菌种孢子的发芽率达到90%以上;将制曲菌种用于圆盘制曲中,在大曲培养至32~34h时,其大曲中性蛋白酶活力>1500U·g-1、酸性蛋白酶活力>300U·g-1,蛋白酶活力处于优良水平,大曲感官无酸曲/花曲、孢子适中/不多,且可使制曲时间缩短8~10h,从而提升了大曲品质,并大大降低了圆盘制曲的能耗成本。关键词:酱油种曲;四阶段培养法;圆盘制曲;酸曲;花曲Abstract:Inthisstudy,afterthreestagesofconventionalsoysaucekojiculture,theseedkojipretreatmentperiodwasadded,thesporesofmatureseedkojiaremadetoreachthegerminationstateintheseedkojimachinetoobtainkojimakingstrains,itistheninoculatedtotherawmaterialanddisckojimakingisperformed.Theresultsshowedthatatthefourthstageofculture,theprocessconditionsofusinghumidifiedwatercontaining10%soysauceliquor,humidificationamountof200mL·min-1,0~4hwithoutventilation,andcontinuousventilationat4~6m3·h-1after4h,cultivatefor10~12htoobtainkojimakingstrains,themethodcanmakethegerminationrateofsporesofkojimakingstrainsreachmorethan90%;thekojimakingstrainsareusedindisckojimaking,whenDaquisculturedto32~34h,itsDaquneutralproteaseactivity>1500U·g-1andacidproteaseactivity>300U·g-1,proteaseactivityisatanexcellentlevel,Daqusensorynoacidkoji/multi-colorkojiandsporesaremoderate/notmuch,andcanshortenthekojimakingtimeby8~10h,therebyimprovingthequalityofDaquandgreatlyreducingtheenergyco...