Study On Resistance To Oxidation Of Oleoresin Ginger

The thesis lucubrated the condition for epuration of oleresin ginger and refining process,textualsed research the effect of ethanol-solution saturating to oleresin ginger solution by orthogonal experiment,optimize the optimum condition:the temperature of soluting transfer is 60±5℃,finish it by two times, 90min-45min,the first solid-liquid ratio is 1 to 3,the second is 1 to 5.Testing the solution-pore of ginger slag crust through BET during the refining process,micro-pore of solution-pore account about 43% for macro-pore,the pore diameter of meso-pore distributing widely(solution pore occupy the gross pore 47%),so that the validated ginger slag crust can apply to absorption agent on theoretically and in practice.It being the fact that specific surface of individual pore diameter and distributing of it had influence.So,as adsorption agent for decontamination oleoresin ginger,ginger slag crust'best specific surface area is 120-130m2/g(whereas,mesopore is the largest). The discourse emphasesed the effect between the antioxygenation of oleoresin ginger to oxidation of vegetable axunge and aminal axunge.Responded the ginger-amide protection by testing undetermind protect system for POV.AV,which changed as the time going by .Protecting efficiently of oleoresin ginger to the axunge is based on free radical process,and the rate of protect of oleoresin ginger to axunge gradually enhanced according to the temperature of environment,and got the summit at 50℃. The experiment explained the vegetable axunge and animal axunge(POV)with appending oleoresin ginger change as the time,all of them satisfied some relative formulas,as follows: corresponding blank samples satisfied some relative formulas,as follows: Above formulas indicate that reaction of axunge oxidation possess the impress of zero order reaction dynamics. The results don't find to be report. Another result is temperature hardly influence the acid number, oleoresin ginger presented stability all right at time (60 days),temperature (100℃),ultraviolet, NaCl solution liquor,rare density of cane sugar solution and acidity,however it not good in alkalinity. Citric acid ,ascorbic acid tocopherol can enhance and harmony the resistance to oxidation of oleoresin ginger ,the axunge with greater quantity of oleoresin ginger had stronger ability to resistance to oxidation,but as the quantity enlarging , the system peroxide number decrease in descending extent. Adopt polar solvent of oleoresin ginger ,its resistance to oxidation is stronger. Through testing the extent of decrease about oleoresin ginge to different axunge sample,it indicate that the quality of substance had some influence to its resistance to oxidation.