【摘 要】
：
The effects of fermenting, boiling, and steaming processes on the levels of free amino acids, organic acids, antioxidant properties (FRAP and DPPH), phenolic co
【机 构】
：
Institute of Farm Product Processing,Engineering Research Center for Agricultural Products Processin
【基金项目】
：
the Independent Innovation of Agricultural Sciences in Jiangsu Province,China
论文部分内容阅读
The effects of fermenting, boiling, and steaming processes on the levels of free amino acids, organic acids, antioxidant properties (FRAP and DPPH), phenolic compounds, and angiotensine converting enzyme (ACE) inhibition of sweet potato tips were investigated. Seventeen free amino acids were found in the tips. Fermenting, boiling, and steaming processes significantly reduced total free amino acid contents and steaming processes caused smaller losses than fermenting and boiling processes. Five organic acids were investigated in the tips. In comparison with the total organic acid content of unprocessed sweet potato tips, steaming and boiling processes significantly reduced it, while fermenting process increased it. Chlorogenic acid, rutin, and quercetin were investigated in the tips. The total phenolic compounds contents of sweet potato tips significantly increased by steaming and boiling processes, but a substantial loss was caused by fermenting process. A similar result was shown in FRAP value. The result of ACE inhibitory activity indicated that boiling, steaming, and fermenting processes significantly increased ACE inhibitory activity.
其他文献
近年来,人们对健康的呼声越来越高,而现代生活空间中充满了各种强度的电场、磁场。由于生物效应的复杂性,这些电磁辐射污染对人体健康的危害程度以及是否会引起生物效应在学
禽畜毛由角蛋白质构成,角蛋白质对于任何生物都难以消化吸收,大都作为废弃物处理。国外研究出一种把废弃的禽畜毛加工成高蛋白饲料的方法：在压力釜内将洗净的禽畜毛加水30%,在
Objective To examine the presence of gender differences in pro-inflammatory potential of cadmium in rats by comparing systemic inflammatory response to acute ca
Tuberculosis remains the worldwide infectious disease. To identify the therapeutic potential of M. vaccae in treating tuberculosis, M. vaccae was injected into
To investigate the expression of integdn-а3 mRNA in meningiomas and its correlation hybridization in patients with meningiomas (36 cases) and normal dura (2 ca
Computed radiography (CR) imaging has high irradiation tolerance and it is easy to archive CR images along with other image information by Digital Imaging and C
参照的地质图空间数据库模型,借助MapInfo强大的空间信息表达能力,在MapInfo平台上构建了数据库.对数据模型进行了扩展,增加了地震目录基本要素类,该数据库建成后可为防震减
Regulatory T cells(Tregs) expressing forkhead/winged-helix transcription factor Foxp3 represent a distinct lineage of lymphocytes which play a central role in p
Dizziness,chest discomfort,chest depression and dyspnea are a group of symptoms that are common complaints in clinical practice. Patients with these symptoms ar
The low dose hyper-radiosensitivity (HRS) in human lung cancer cell line A549 was in-vestigated,the changes of ATM kinase,cell cycle and apoptosis of cells at d