Changes in antioxidant and probiotic properties of a freeze-dried apple snack during storage
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Cristina Barrera, Cristina Burca, Lucía Seguí, Noelia Betoret
2018
Abstract
This research developed an apple snack with potential probiotic effect (> 107 CFU/g) by combining vacuum impregnation with Lactobacillus salivarius spp. salivarius (CECT 4063) and freeze-drying. Throughout storage (30 days), both the lactobacillus viability and the total flavonoids content decreased. Trehalose adition (10% by weight) to the impregnation liquid and/or its homogenization at 100 MPa accelerated the loss of cell viability but delayed flavonoids degradation and promoted an increase in the amount of phenols and total antioxidants. Keywords: L. salivarius spp. salivarius; homogenization; trehalose; freeze-drying; antioxidants.
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Date 2018-09-11
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