Poly(alpha-dodecyl gamma-glutamate) (PAAG-12) and polylactic acid films charged with alpha-tocopherol and their antioxidant capacity in food models
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hdl:2117/169493
Tipus de documentArticle
Data publicació2019-08-06
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Abstract
Poly (alpha-dodecyl-glutamate) (PAAG-12) was successfully synthesized from poly(gamma-glutamic acid) (PGGA) according to Nuclear Magnetic Resonance (NMR) analyses. PAAG-12 filmswere prepared and enriched with 5% alpha-tocopherol, with the aim of using them as novel antioxidant active packaging for food applications. Thermogravimetric Analysis (TGA) characterization
determined that alpha-tocopherol improved thermal stability of films, which is beneficial for industrial
processing. Polylactic Acid (PLA) films prepared with the same amount of alpha-tocopherol were used to
set a comparative frame and both types of films were applied to two different food models to assess
their protective action against oxidation. Water, 50% ethanol (EtOH) and 95% EtOH were used as
food simulants and HPLC analyses were performed to determine difusion and partition coeficients
in PLA and the novel polymer, the latter exhibiting slower release rates. Primary oxidation was
measured with peroxide value, which revealed that PAAG-12 films with alpha-tocopherol protected
oil-in-water (O/W) emulsions up to 29 days, complying with the Codex Alimentarius.
CitacióVillasante, J. [et al.]. Poly(alpha-dodecyl gamma-glutamate) (PAAG-12) and polylactic acid films charged with alpha-tocopherol and their antioxidant capacity in food models. "Antioxidants", 6 Agost 2019, vol. 8, núm. 8, p. 284:1-284:11.
ISSN2076-3921
Versió de l'editorhttps://www.mdpi.com/2076-3921/8/8/284
Col·leccions
- Doctorat en Enginyeria de Processos Químics - Articles de revista [122]
- POL - Polímers Industrials Avançats i Biopolímers Tecnològics - Articles de revista [114]
- Departament d'Enginyeria Química - Articles de revista [2.227]
- CRESCA - Centre de Recerca en Seguretat i Control Alimentari - Articles de revista [41]
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