Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids
Films based on a 75:25 polylactic acid (PLA) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blend, containing 2% (<i>w</i>/<i>w</i>) of different phenolic acids (ferulic, <i>p</i>-coumaric or protocatechuic acid), and plasticised with 15 wt. % polyethylen...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-01-01
|
| Series: | Foods |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-8158/11/2/243 |
| _version_ | 1797494087361757184 |
|---|---|
| author | Eva Hernández-García Maria Vargas Amparo Chiralt Chelo González-Martínez |
| author_facet | Eva Hernández-García Maria Vargas Amparo Chiralt Chelo González-Martínez |
| author_sort | Eva Hernández-García |
| collection | DOAJ |
| description | Films based on a 75:25 polylactic acid (PLA) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blend, containing 2% (<i>w</i>/<i>w</i>) of different phenolic acids (ferulic, <i>p</i>-coumaric or protocatechuic acid), and plasticised with 15 wt. % polyethylene glycol (PEG 1000), were obtained by melt blending and compression moulding. The disintegration and biodegradation of the film under thermophilic composting conditions was studied throughout 35 and 45 days, respectively, in order to analyse the effect of the incorporation of the antimicrobial phenolic acids into the films. Sample mass loss, thermo-degradation behaviour and visual appearance were analysed at different times of the composting period. No effect of phenolic acids was observed on the film disintegration pattern, and the films were completely disintegrated at the end of the composting period. The biodegradation analysis through the CO<sub>2</sub> measurements revealed that PLA-PHBV blend films without phenolic acids, and with ferulic acid, completely biodegraded after 20 composting days, while <i>p</i>-coumaric and protocatechuic slightly retarded full biodegradation (21 and 26 days, respectively). Phenolic acids mainly extended the induction period, especially protocatechuic acid. PLA-PHBV blend films with potential antimicrobial activity could be used to preserve fresh foodstuff susceptible to microbial spoilage, with their biodegradation under composting conditions being ensured. |
| first_indexed | 2024-03-10T01:29:17Z |
| format | Article |
| id | doaj.art-fc2ceb5b55b14256aa7a94cf9ddb6d8f |
| institution | Directory Open Access Journal |
| issn | 2304-8158 |
| language | English |
| last_indexed | 2024-03-10T01:29:17Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Foods |
| spelling | doaj.art-fc2ceb5b55b14256aa7a94cf9ddb6d8f2023-11-23T13:46:04ZengMDPI AGFoods2304-81582022-01-0111224310.3390/foods11020243Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic AcidsEva Hernández-García0Maria Vargas1Amparo Chiralt2Chelo González-Martínez3Instituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46008 Valencia, SpainInstituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46008 Valencia, SpainInstituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46008 Valencia, SpainInstituto Universitario de Ingeniería de Alimentos para el Desarrollo, Universitat Politècnica de València, 46008 Valencia, SpainFilms based on a 75:25 polylactic acid (PLA) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) blend, containing 2% (<i>w</i>/<i>w</i>) of different phenolic acids (ferulic, <i>p</i>-coumaric or protocatechuic acid), and plasticised with 15 wt. % polyethylene glycol (PEG 1000), were obtained by melt blending and compression moulding. The disintegration and biodegradation of the film under thermophilic composting conditions was studied throughout 35 and 45 days, respectively, in order to analyse the effect of the incorporation of the antimicrobial phenolic acids into the films. Sample mass loss, thermo-degradation behaviour and visual appearance were analysed at different times of the composting period. No effect of phenolic acids was observed on the film disintegration pattern, and the films were completely disintegrated at the end of the composting period. The biodegradation analysis through the CO<sub>2</sub> measurements revealed that PLA-PHBV blend films without phenolic acids, and with ferulic acid, completely biodegraded after 20 composting days, while <i>p</i>-coumaric and protocatechuic slightly retarded full biodegradation (21 and 26 days, respectively). Phenolic acids mainly extended the induction period, especially protocatechuic acid. PLA-PHBV blend films with potential antimicrobial activity could be used to preserve fresh foodstuff susceptible to microbial spoilage, with their biodegradation under composting conditions being ensured.https://www.mdpi.com/2304-8158/11/2/243antimicrobialferulic<i>p</i>-coumaricprotocatechuicdisintegrationthermogravimetric analysis |
| spellingShingle | Eva Hernández-García Maria Vargas Amparo Chiralt Chelo González-Martínez Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids Foods antimicrobial ferulic <i>p</i>-coumaric protocatechuic disintegration thermogravimetric analysis |
| title | Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids |
| title_full | Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids |
| title_fullStr | Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids |
| title_full_unstemmed | Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids |
| title_short | Biodegradation of PLA-PHBV Blend Films as Affected by the Incorporation of Different Phenolic Acids |
| title_sort | biodegradation of pla phbv blend films as affected by the incorporation of different phenolic acids |
| topic | antimicrobial ferulic <i>p</i>-coumaric protocatechuic disintegration thermogravimetric analysis |
| url | https://www.mdpi.com/2304-8158/11/2/243 |
| work_keys_str_mv | AT evahernandezgarcia biodegradationofplaphbvblendfilmsasaffectedbytheincorporationofdifferentphenolicacids AT mariavargas biodegradationofplaphbvblendfilmsasaffectedbytheincorporationofdifferentphenolicacids AT amparochiralt biodegradationofplaphbvblendfilmsasaffectedbytheincorporationofdifferentphenolicacids AT chelogonzalezmartinez biodegradationofplaphbvblendfilmsasaffectedbytheincorporationofdifferentphenolicacids |