Study on the changes of fermentation quality and fungi of silage maize by organic acids under simulated rolling conditions
In order to inhibit the abnormal fermentation of silage corn raw materials during transportation,the effects of different organic acid salts on their inhibition were investigated.In this experiment,silage corn raw materials were used as materials,potassium sorbate and sodium benzoate were selected as additives to simulate the accumulation state of silage,and no addition was used as a control to sample and determine the nutritional components,mycotoxins and fungal micro-community structure at 0,6,12,18,24 h and 36 h of simulated silage hauler,respectively.At the same time,the temperature changes every 2 h were monitored to screen out the organic acid additives that could inhibit the abnormal fermentation of silage corn raw materials and their mechanism of action.The results showed that compared with the control,potassium sorbate and sodium benzoate could significantly inhibit the abnormal fermentation temperature of corn silage(P<0.05).Among them,potassium sorbate had the most significant effect,which decreased to the lowest temperature at 18～20 h,and the temperature was 20.01℃ .The effects of additives on nutritional components were inconsistent at each fermentation time point,and the contents of dry matter,starch and ash decreased at 36 h.Compared with the other two groups,the sodium benzoate group significantly reduced the content of vomitoxin and zearalenone(P<0.05),which decreased by 31.6% and 21.2%,respectively.In summary,sodium benzoate could inhibit the abnormal fermentation of corn silage raw materials.
万方数据
维普
