荸荠英提取物抑菌活性及其应用研究

Study on antibacterial activity and application of puchiin extract

为了提高荸荠的深加工附加值,本实验从荸荠加工废弃物荸荠皮中提取抑菌物质,研究其抑菌活性及其应用。结果表明,荸荠英提取物对大肠杆菌、金黄色葡萄球菌、藤黄微球菌、枯草芽孢杆菌均有抑制作用,其中对金黄色葡萄球菌的抑制作用最强,且持续性好。荸荠英提取物对大肠杆菌、金黄色葡萄球菌、藤黄微球菌的抑制作用高于1%的山梨酸钾溶液,而对枯草芽孢杆菌的抑制作用与其比较接近;利用荸荠英提取物能有效防止彩色水果番茄贮藏过程中由根霉和链格孢引起的腐烂,与根霉相比,荸荠英提取物对链格孢的抑制效果更好。

The antibacterial activity and application of puchiin extraction from the processed wastes of Eleocharis dulcis were studied.The results showed that puchiin had inhibition activity to Escherichia coli,Staphylococcus aureus,Micrococcus luteus and Bacillus subtilis.Among the four bacteria,the inhibition activity to S.aureus was the highest.The inhibition activity was better than 1% potassium sorbate solution on E.coli,S.aureus and M.luteus except B.subtilis.Puchiin could effectively control the spoilage caused by Rhizopus nigrican and Alternaria alternate.However,the inhibition activity to A.alternata was better than that of R.nigrican.