Bioactive pectic polysaccharides from bay tree pruning waste: Sequential subcritical water extraction and application in active food packagingShow others and affiliations
2021 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 272, article id 118477Article in journal (Refereed) Published
Abstract [en]
The potential isolation of bio-active polysaccharides from bay tree pruning waste was studied using sequential subcritical water extraction using different time-temperature combinations. The extracted polysaccharides were highly enriched in pectins while preserving their high molecular mass (10-100 kDa), presenting ideal properties for its application as additive in food packaging. Pectin-enriched chitosan films were prepared, improving the optical properties (>= 95% UV-light barrier capacity), antioxidant capacity (.95% radical scavenging activity) and water vapor permeability (<= 14 g center dot Pa-1 center dot s(-1)center dot m(-1)center dot 10(-7)) in comparison with neat chitosan-based films. Furthermore, the antimicrobial activity of chitosan was maintained in the hybrid films. Addition of 10% of pectins improved mechanical properties, increasing the Young's modulus 12%, and the stress resistance in 51%. The application of pectin-rich fractions from bay tree pruning waste as an additive in active food packaging applications, with triple action as antioxidant, barrier, and antimicrobial has been demonstrated.
Place, publisher, year, edition, pages
Elsevier BV , 2021. Vol. 272, article id 118477
Keywords [en]
Laurel, Circular biorefinery, Green extraction method, Antioxidant pectins, Food packaging films
National Category
Polymer Technologies
Identifiers
URN: urn:nbn:se:kth:diva-301812DOI: 10.1016/j.carbpol.2021.118477ISI: 000689500900007PubMedID: 34420736Scopus ID: 2-s2.0-85111606725OAI: oai:DiVA.org:kth-301812DiVA, id: diva2:1594807
Note
QC 20210916
2021-09-162021-09-162022-06-25Bibliographically approved