Schved F, Pierson M D, Juven B J
Department of Food Science and Technology, Virginia Tech, Blacksburg 24061-0418, USA.
Lett Appl Microbiol. 1996 Mar;22(3):189-91. doi: 10.1111/j.1472-765x.1996.tb01139.x.
When used separately, 20 mmol l-1 maltol or 1600 AU ml-1 nisin resulted in a 0-0.6 log10 reduction in viable counts of Escherichia coli in a buffer system. However, when added in combination they yielded a 1.8-5.5-log-cycle reduction in viable counts of E. coli at pH 5.0 and 6.8 respectively. It is postulated that maltol (and ethyl maltol) destabilizes the cell outer membrane by chelation of Mg2+ and/or Ca2+, thus permeabilizing the E. coli cell to nisin.
单独使用时，20 mmol l-1 的麦芽酚或1600 AU ml-1 的乳酸链球菌素在缓冲体系中可使大肠杆菌的活菌数减少0 - 0.6个对数单位。然而，当它们联合使用时，在pH 5.0和6.8条件下，分别可使大肠杆菌的活菌数减少1.8 - 5.5个对数周期。据推测，麦芽酚（以及乙基麦芽酚）通过螯合Mg2+和/或Ca2+使细胞外膜不稳定，从而使大肠杆菌细胞对乳酸链球菌素具有通透性。
