CAJ | 학술논문

为揭示莴笋贮藏过程中亚硝酸盐产生的本质原因，对莴笋进行保持原状、颗粒状、粉末状处理，并置于1、4和8℃条件下贮藏，分析莴笋中亚硝酸盐含量和菌落数的变化规律及二者的动态关系。结果表明：粉末状处理在8℃下贮藏时，莴笋最早检出亚硝酸盐，且亚硝酸盐积累量最大。莴笋中菌落总数变化与亚硝酸含量变化存在动态关系，3种初加工方式莴笋中微生物的生长速度快慢和亚硝酸盐含量高低及最早检出时间都表现为保持原状＜颗粒状＜粉末状。分离得到的6株细菌具有硝酸盐还原特性，为挑取总菌落数的6／10，初步推断硝酸盐还原菌的大量繁殖导致了莴笋中亚硝酸盐的积聚。
위게시와순저장과정중아초산염산생적본질원인，대와순진행보지원상、과립상、분말상처리，병치우1、4화8℃조건하저장，분석와순중아초산염함량화균락수적변화규률급이자적동태관계。결과표명：분말상처리재8℃하저장시，와순최조검출아초산염，차아초산염적루량최대。와순중균락총수변화여아초산함량변화존재동태관계，3충초가공방식와순중미생물적생장속도쾌만화아초산염함량고저급최조검출시간도표현위보지원상＜과립상＜분말상。분리득도적6주세균구유초산염환원특성，위도취총균락수적6／10，초보추단초산염환원균적대량번식도치료와순중아초산염적적취。
In order to reveal the reason of producing nitrite of Lactuca sativa L .var .in storage ,Asparagus let‐tuce were pretreated by stay the original state ,granular ,powdery and stored in 1 ,4 and 8℃ .The nitrite content was detected and the change pattern of total plate count was analyzed in asparagus lettuce .The results indicated that the nitrite was detected initially and the maximum accumulation was obtained in 8℃ .The nitrite content and total number of colonies had dynamic relationship .The microbial growth ,nitrite content and the earliest de‐tection time of nitrite in asparagus lettuce which pretreated by different primary processing were all appeared to stay the original state< granular< powdery .Almost six strains had the characteristic of nitrate reduction ,ac‐counted for 6/10 of total colony .Reproduction of nitrate reducing bacteria caused nitrite accumulation in aspar‐agus lettuce .