Storage Research And Food Security Preliminary Study Of Sweet Potato Treated By Eupatorium Adenophorum

As there are many problems in the storage of sweet potato. such as high rotten rate and poor quality, we need to do some research to improve it. In this study, we explored the impact of Eupatorium adenophorum on sweet potato storage period by treating three kinds of sweet potatoes (purple sweet potato (Nanshu008), fresh-food sweet potato (xiang potato) and starch sweet potato (Yushu))with different treatment doses of boiling water extract and dry power of Eupatorium adenophorum. At the0th d、60th d、120th d、180th d of the storage period, we tested rotten rate, water content, starch content, soluble protein content, soluble sugar content and a-amylase activity. Then the treated sweet potatoes were used to feed the rats for food security preliminary study. The main results are as follows:Compared with the control, there was a varying degree of reduction in rotten rate, with a reduction of7%-12%; an improvement of water content, starch content, soluble protein content and soluble sugar content; and a reduction inα-amylase activity,the fission accelerated phase of every nutrition indicators appears at about the120th d of the storage period. We get the best results when the mass ratio was1:15both in the boiling water extract treated group and the dry power treated group. There was no significant difference between the two treatments. We applied potato sprout inhibition CIPC to the preservation of sweet potatoes, and got no effect.In the food security study, we selected the sweet potatoes treated by the boiling water extract of Eupatorium adenophorum at the mass ratio of1:15. In the study, the treated sweet potatoes accounted for100%,50%and25%of the feed respectively, and two blank controls of pure rat food and pure untreated sweet potatoes. We tested the body weights of rats every10days, and at the30th and90th day we counted the feed utilization, tested blood parameters and dissected the corresponding rats to test their organ index and pathological changes. The main results are as follows:there was no significant difference among the rats fed with treated and untreated sweet potatoes in mental state, blood parameters, organ index and pathological changes. We judge preliminary that it is secure to eat Eupatorium adenophorum treated sweet potatoes.