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Study On The Effect Of A Promotional Reagent On Lycopene Extraction And Primary Crystallization Of Rough Product

Posted on:2007-09-16Degree:MasterType:Thesis
Country:ChinaCandidate:H HeFull Text:PDF
GTID:2121360185992914Subject:Biochemical Engineering
Abstract/Summary:PDF Full Text Request
Lycopene, an acyclic carotenoid containing 13 double bondsand found mainly in tomato, is becoming a popular food addictive, because of its therapeutic activities such as anticarcinogenic properties.There are many problems needing researchers to resolve in lycopene researches in China. First, some poisonous and environment-polluting organic solvents such as chloroform, 1, 2-ethylene bichloride have been used in many researches. Second blenders are not used in many reported references, the process data in such references will be unreliable. Third, most processes don't take advantage of the natural enzyme in tomatoes to break down the pectic and the cell fabric to promote the release of lycopene. So such process data is difficult to guide correctly and efficiently lycopene production.There was a new process of extraction of lycopene from tomato, basing on the enhanced action of the natural enzyme in tomato with reagent A. Under pH 6-7, tomato paste, to which reagent A was added in a concentration of 0.4%(w/w), was enzymolysed for 1 hour at 45℃, then was extracted for 1.5 hours at 45℃with ethyl acetate. Above 80% extraction efficiency of one time extraction was obtained. Comparing the process without reagent A, the process with reagent A could save half of the extraction time, and the amount of extraction solvent was only one third of that in the process without reagent A.If there was reagent A in the tomato paste and it was managed for 4 minutes by...
Keywords/Search Tags:lycopene, natural enzyme, extraction, ethyl acetate, crystallize
PDF Full Text Request
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