Quality Variation Of Duration Of Potato Storage And Study On The Effect Of Film Fresh

The experiment include four potatoes of Ke xin 1, Favorita, Long shu 3, Atlantic which were stored at 4℃and cache for 180d, study the changes of different potato tubers by periodic determination of respiration, reducing sugar, starch, Vc and dry matter. After 4℃and 120d,the Favorita tuber were filmed by sodium alginate, vegetable oil, liquid paraffin and stored at room temperature(15 ~ 20℃) for 30d. Through the regular change of determination, this paper discusses related indexes of film preservation effect on transport sales period, and selected the best formula for sa. Results show that:4℃of potatoes is better than those of storage caches. The potato stored at 4℃is better than storage caches. The potato tubers stored at 4℃had significant inhibitory effect on respiration intensity than those of storage caches, the smooth content of reducing sugar and starch, and the slow decline of Vc and dry matter, which contribute to prolong rubbers storage period.Different varieties of potatoes during storage are the same basically in respiration intensity and quality change . But these indexes are different(P<0.05). At 4℃and cached temperature, respiration intensity of Favorita is significantly higher than others; reducing sugar of Ke xin 1 is significantly higher than others; starch and Vc of Long shu 3 are significantly higher than others; the Vc reduction of Atlantic is maximum; the dry matter reduction of Favotita is maximum.The fresh effect of various sa treatment is different on the transport sale during late storage. 3% of vegetable oil membrane has obvious preservation effect. Compared with controlled trial, it can significantly reduce the decay rate, potato tuber germination, weightlessness rate, inhibit the loss, reduce the content of Vc and PPO activity, delay the reducing sugar leels, extend shelf life.The vegetable oil of different volume concentration has different effect on preservation of potato tuber, 3% of vegetable oil is better than 2% and 4%,both low concentration and high concentration are detrimental to the normal physiological metabolism of potato tuber.The best formula of vegetable oils membrane: 3% of vegetable oil , 1.5% of sucrose ester, 1.5% of monoglyceride,0.6% of potassium sorbate, 0.2% of ascorbic acid。...