Study On The Extraction And Abruption And Stability Of Lycopene From Tomato Skin

This paper uses tomato skin that the ketchup factory dealt with waste material as raw material to study the conservation of tomato skin.Experiment result has shown:After one month,vacuumized tomato skin Lycopene conservation is 99.1% higher than common plastic packing.4℃low tempreture conservation Lycopene conservation is 18.9% higher than room tempreture.To avoid sun light Lycopene conservation is 38.6% higher than room dispersion light.Full skin conservation Lycopene conservation is 69.9% higher than smash conservation.To avoid oxygen and light and use low tempreture and keep tomato skin full can elevate Lycopene conservation.Study solvent extraction Lycopene from tomato skin,according orthogonal experiment the best process condition is:60 mesh tomato skin,ratio of liquor and material is 11:1(mL/g),60℃extraction 100min, extraction stage is 3,extraction rate is 81.13%.Adopt microwave pretreatment tomato skin then solvent extraction,to study the impact on Lycopene extraction effect of microwave pretreatment tomato skin,experiment result has shown:60 mesh tomato skin,the dosage of soakage solvent is 1.6:1(mL/g),720w microwave pretreatment 60s,60℃extraction time is 100min,ratio of liquor and material is 8:1(mL/g),extraction stage is 3,extraction rate is 93.86%,extraction rate is 15.69% higher than solvent extraction,solvent dosage is 12.72% less than solvent extraction.Study ultrasonic extraction Lycopene from tomato skin,according orthogonal experiment the best process condition is:Ultrasonic power is 60w,ratio of liquor and material is 10:1(mL/g),50℃ultrasonic 30min, extraction stage is 3,extraction rate is 92.08%.Study the impact of water content of tomato skin on microwave extraction,the result has shown that water content of tomato skin is 30% can have a better impact.The best process condition is: extraction time is 60s,ratio of liquor and material is 12:1(mL/g),the power of microwave is 540w,extraction stage is 4,extraction rate is 92.37%.Microwave extraction has high extraction rate,costs less time,use microwave extraction can largely elevation efficiency.Use TCL to study the purification of tomato oleoresin,use a mixture petroleum ether:Ethyl is 8.5:1.5 as a new kind of developing agent,Rf of lycopene is 0.74.Use LCC to sublimate tomato oleoresin that had sublimated Lycopene.Study the stability of Lycopene,the result is that light,temperature,acid,oxidant and Fe³⁺ can affect the stability of lycopene.