Autor: |
Ivan Taiatele Junior, Tatiane Cristina Dal Bosco, Janksyn Bertozzi, Roger Nabeyama Michels, Suzana Mali |
Jazyk: |
English<br />Spanish; Castilian<br />Portuguese |
Rok vydání: |
2020 |
Předmět: |
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Zdroj: |
Brazilian Journal of Food Technology, Vol 23 (2020) |
Druh dokumentu: |
article |
ISSN: |
1981-6723 |
DOI: |
10.1590/1981-6723.24818 |
Popis: |
Abstract The objectives of this work were to determine the biodegradability of starch/glycerol foam and of poly(butylene-adipate-co-terephthalate) (PBAT)/starch film using respirometric methods and also to compare these results with conventional polymers – expanded polystyrene and low-density polyethylene. A matured organic compost was utilized as inoculum and sucrose was used as positive reference material. Biodegradation efficiencies (BE) after 47 days were: 35% for sucrose; 34% for starch/glycerol; and 38% for PBAT/starch. Starch/glycerol and PBAT/starch presented BE statistically equal to sucrose, whilst both the conventional packaging used were not degraded (p> 0.05). Infrared spectroscopy and thermogravimetric analyses showed that the microbiota rather degraded the starch over the PBAT in the PBAT/starch blend, and also that some starch remained intact in the internal polymeric matrix. This study verified that starch/glycerol foam and PBAT/starch film are highly biodegradable materials and may then be used to enhance the biodegradability of some products such as disposable trays and supermarket bags. |
Databáze: |
Directory of Open Access Journals |
Externí odkaz: |
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