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7672983 
Journal Article 
Process optimisation for recovery of carotenoids from tomato waste 
Strati, IF; Oreopoulou, V 
2011 
Yes 
Food Chemistry
ISSN: 0308-8146
EISSN: 1873-7072 
129 
3 
747-752 
English 
25212294 
WOS:000293726500006 
Carotenoids constitute an important component of waste originating from tomato processing plants. Studies were carried out to assess the extraction yield of tomato waste carotenoids in different solvents and solvent mixtures and to optimise the extraction conditions for maximum recovery. A mixture of ethyl acetate and hexane gave the highest carotenoid extraction yield among the others examined. Extraction conditions, such as percentage of hexane in the solvent mixture of ethyl acetate and hexane, ratio of solvent to waste and particle size were optimised using a statistically designed experiment. A regression equation for predicting the carotenoid yield as a function of three extraction variables was derived by statistical analysis and a model with predictive ability of 0.97 was obtained. The optimised conditions for maximum carotenoid yield (37.5mgkg(-1)drywaste) were 45% hexane in solvent mixture, solvent mixture to waste ratio of 9.1:1 (v/w) and particle size 0.56mm. 
Carotenoids; Extraction yield; Optimisation; Response surface methodology; Solvent mixtures; Tomato waste