Study Of Phase-temperature Preservation And Deep-processing Technology Of Physalis Pubescens L.

Taken the Physalis Pubescens L.harvested from Hailun city Heilongjiang province in 2014 as experiment material.Study the storage effect and confirm the optimum storage parameters of phase-temperature preservation technology.At the same time,considered the high rate of imperfect fruit in the actual production,we successfully developed 1 kind of seed oil based on the fruit.the storage period was prolonged and the commercial value and comprehensive utilization of imperfect fruit were improved.It is promising that this meaningful program can boost the industrialization development of Physalis Pubescens L.in the northeast region and even the whole country.(1)Using 1-MCP can inhibit the respiration intensity Physalis Pubescens L.during storage,and when the concentration of 1-MCP was 1.5?L/L,the inhibition effect can reached the maximum during storage.(2)Based on the phase-temperature preservation technology,and the condition of controlled temperature fluctuation.The effect of different storage temperatures(same fluctuation)on the storage quality shown that 0? is the optimum storage temperature for this fruit.When it was 4 ?,the respiration rate and nutritive components loss of the fruit was relative higher than 0?,meanwhile the condition of fungal infection was worse.When it was-2?,which close to the freezing point(-2.8?),can cause low temperature damage,bad taste and aroma loss.(3)The optimum parameter of MA(modified atmosphere)storage is:bags made of 0.03 mm PE film.Combined with 1-MCP treatment,temperature control and anti-mold treatment the MA can make it a very good spontaneous gas effect during storage.(4)The optimum parameter of impulse type SO2 anti-mold technology is that 200?L/L×1.Oh at the first time and 100 ?L/L×0.5 h every 15 day in the following period.When the content of SO2 is higher,it has a negative effect on the physiological metabolism of the fruit,and oxidize the pigment substance in persistent calyx and deteriorate the commercial value.When the content is lower,it may failed to affect the mold.(5)By using orthogonal experiment method,the parameters of phase-temperature preservation was optimized,the result is:the concentration of 1-MCP treatment was 1.5 ?L/L,storage temperature was 0? and impulse type SO2 anti-mold treatment was 200ppm×1.0 h+100 ppm×0.5 h.At the end of storage,the result shown that with the multi-treatments above,the mold rate was 3.7%,the weight loss rate was 5.9 and sensory score was 93 points.(6)Analyzed the fatty acid compositions of Physalis Pubescens L.seed oil produced by successive extraction method.The result was that:1.3%Nutmeg acid,10.3%palmitic acid,5.3%stearic acid,14.3%oleic acid,62.7%linoleic acid,4.0%linolenic acid,1.2%arachidic acid and 1.0%docosanoic acid,among which the highest composition is linoleic acid,which owns well healthy function.