北京联合大学学报:自然科学版
北京聯閤大學學報:自然科學版
북경연합대학학보:자연과학판
Journal of Beijing Union University
2012年
1期
46-50
,共5页
豆豉%蛋白质%氨基酸%还原糖%亚硝酸盐%pH值
豆豉%蛋白質%氨基痠%還原糖%亞硝痠鹽%pH值
두시%단백질%안기산%환원당%아초산염%pH치
Fermented blank bean%Protein%Amino acid%Reducing sugar%Nitrite%pH
本实验以永川豆豉为阳性对照,对自制豆豉发酵过程中蛋白质、氨基酸、还原糖及亚硝酸盐等主要成分的含量和pH值的变化进行检测,并初步探讨其变化规律。实验结果:在豆豉发酵过程中,蛋白质呈下降趋势;在前发酵过程中,蛋白质最终达10.682%;在后发酵过程中,最终达4.429%。氨基酸含量不断增加,最终达1.233g/100g。还原糖含量不断下降,最终达5.286g/100g。亚硝酸盐含量呈上升趋势,达到1.55μg/g。pH值前期保持不变,后期下降,最终达3.80。
本實驗以永川豆豉為暘性對照,對自製豆豉髮酵過程中蛋白質、氨基痠、還原糖及亞硝痠鹽等主要成分的含量和pH值的變化進行檢測,併初步探討其變化規律。實驗結果:在豆豉髮酵過程中,蛋白質呈下降趨勢;在前髮酵過程中,蛋白質最終達10.682%;在後髮酵過程中,最終達4.429%。氨基痠含量不斷增加,最終達1.233g/100g。還原糖含量不斷下降,最終達5.286g/100g。亞硝痠鹽含量呈上升趨勢,達到1.55μg/g。pH值前期保持不變,後期下降,最終達3.80。
본실험이영천두시위양성대조,대자제두시발효과정중단백질、안기산、환원당급아초산염등주요성분적함량화pH치적변화진행검측,병초보탐토기변화규률。실험결과:재두시발효과정중,단백질정하강추세;재전발효과정중,단백질최종체10.682%;재후발효과정중,최종체4.429%。안기산함량불단증가,최종체1.233g/100g。환원당함량불단하강,최종체5.286g/100g。아초산염함량정상승추세,체도1.55μg/g。pH치전기보지불변,후기하강,최종체3.80。
This experiment uses Yongchuan fermented blank beans as the positive control group to test the change in the amount of such main ingredients as protein, amino acid, reducing sugar, nitrite and its pH during the fermentation, and to find out the rules in the change. Results: the protein was reduced to 10. 682% at the early stage and to 4. 429% at the last stage; the amino acids continuously increased and reached 1. 233 g/100 g in the end; the reducing sugar steadily decreased and finally was 5. 286 g/100 g; the nitrite increases and in the end it was 1.55 μ g/g; its pH value remained unchanged at the early stage but went down in the last stage and in the end it was 3.80.