Resumo

ORDONEZ-SANTOS, Luis Eduardo; MARTINEZ-GIRON, Jader  e  RODRIGUEZ-RODRIGUEZ, Diana Ximena. Extraction of total carotenoids from peach palm fruit (Bactris gasipaes) peel by means of ultrasound application and vegetable oil. Dyna rev.fac.nac.minas [online]. 2019, vol.86, n.209, pp.91-96. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v85n207.74840.

Ultrasound-assisted extraction (UAE) technology was applied to extract total carotenoids from the dry peach palm peel using soybean oil as extraction solvent. The optimization of the parameters of total extraction of carotenoids from the dried peel was carried out using the Response Surface Methodology (RSM) and the Central Composite Design (CCD). The extraction parameters were temperature, extraction time and solid-solvent ratio. The optimal conditions for UAA-assisted extraction were: 48 ° C, extraction time of 28 min, and solid-solvent ratio of 0.0037 g / mL, with a predicted carotenoid content of 151.50 mg / 100 g of dry peel. To validate the optimized model, the experimental values were compared with the predicted values to verify the adequacy and fit of the model. The ultrasound extraction was 33.60% higher than the maceration technique, reason why this study indicated that the UAE represents an ecological contribution in the valorization of byproducts coming from peach palm fruits.

Palavras-chave : β-carotene; cavitation; central composite design; optimization.

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