Publication: Assessment of Rosemary (Rosmarinus officinalis L.) Extract as Antioxidant in Jelly Candies Made with Fructan Fibres and Stevia
Authors
Cedeño-Pino, Cristina ; Martínez-Tomé, Magdalena ; Murcia, María Antonia ; Jordán, María José ; Bañón, Sancho
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Martínez-Tomé, Magdalena ; Bañón, Sancho
Publisher
MDPI
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DOI
http://dx.doi.org/10.3390/antiox9121289
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info:eu-repo/semantics/article
Description
© 2020. The authors. This document is made available under the CC-BY 4.0 license http://creativecommons.org/licenses/by /4.0/
This document is the published version of a published work that appeared in final form in
Antioxidants.
Abstract
Enrichment with rosemary antioxidants is proposed as a possible strategy to obtain healthier jelly candies. Two aqueous rosemary extracts (RE) containing 73.9 (RE74) and 145.6 (RE146)mg polyphenols per g freshweightwere assessed as antioxidants in jelly candies based on fructooligosaccharides, inulin and stevia. Up to 15 phenolic acids, flavonoids and diterpeneswere determined in the extracts,with rosmarinic
acid as the main active compound. Sensory tolerance, physical properties, rosmarinic acid recovery,
polyphenol content, and antioxidant capacity were determined in jelly candies. The threshold of sensory
detection was established at 0.26 g RE146/kg of raw candy, below which rosemary off-flavours were
avoided without altering pH, brix, texture, CIELab colour, and consumer acceptance. Adding 0.26 g RE146 per kg increased (p < 0.001) polyphenol content from197 to 411 g GAE/g and the antioxidant capacity
from 1.77 to 4.14 mol Trolox/g. Rosemary polyphenols resulted in being resistant to cooking, acted as
secondary antioxidants and showed good interaction with the other jelly ingredients. Aqueous extracts
from rosemary distillation by-products can be incorporated at acceptable levels to jelly candy formulations
leading to higher oxidative stability and an increased content of dietary polyphenols.
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Citation
Antioxidants 2020, 9, 1289
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