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Introducing the Newly Isolated Bacterium Aneurinibacillus sp. H1 as an Auspicious Thermophilic Producer of Various Polyhydroxyalkanoates (PHA) Copolymers–2. Material Study on the Produced Copolymers
Open AccessArticle

Conversion of Starchy Waste Streams into Polyhydroxyalkanoates Using Cupriavidus necator DSM 545

Department of Agronomy, Food, Natural Resources, Animals and Environment (DAFNAE), University of Padova, Agripolis, 35020 Legnaro (PD), Italy
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Polymers 2020, 12(7), 1496; https://doi.org/10.3390/polym12071496
Received: 31 May 2020 / Revised: 26 June 2020 / Accepted: 30 June 2020 / Published: 4 July 2020
(This article belongs to the Special Issue Sustainable Polymers from Biomass)
Due to oil shortage and environmental problems, synthetic plastics have to be replaced by different biodegradable materials. A promising alternative could be polyhydroxyalkanoates (PHAs), and the low-cost abundant agricultural starchy by-products could be usefully converted into PHAs by properly selected and/or developed microbes. Among the widely available starchy waste streams, a variety of residues have been explored as substrates, such as broken, discolored, unripe rice and white or purple sweet potato waste. Cupriavidus necator DSM 545, a well-known producer of PHAs, was adopted in a simultaneous saccharification and fermentation (SSF) process through an optimized dosage of the commercial amylases cocktail STARGEN™ 002. Broken rice was found to be the most promising carbon source with PHAs levels of up to 5.18 g/L. This research demonstrates that rice and sweet potato waste are low-cost feedstocks for PHAs production, paving the way for the processing of other starchy materials into bioplastics. View Full-Text
Keywords: polyhydroxyalkanoates; optimized saccharification; starchy waste; simultaneous saccharification and fermentation; low-cost carbon source; 3HB polyhydroxyalkanoates; optimized saccharification; starchy waste; simultaneous saccharification and fermentation; low-cost carbon source; 3HB
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MDPI and ACS Style

Brojanigo, S.; Parro, E.; Cazzorla, T.; Favaro, L.; Basaglia, M.; Casella, S. Conversion of Starchy Waste Streams into Polyhydroxyalkanoates Using Cupriavidus necator DSM 545. Polymers 2020, 12, 1496. https://doi.org/10.3390/polym12071496

AMA Style

Brojanigo S, Parro E, Cazzorla T, Favaro L, Basaglia M, Casella S. Conversion of Starchy Waste Streams into Polyhydroxyalkanoates Using Cupriavidus necator DSM 545. Polymers. 2020; 12(7):1496. https://doi.org/10.3390/polym12071496

Chicago/Turabian Style

Brojanigo, Silvia; Parro, Elettra; Cazzorla, Tiziano; Favaro, Lorenzo; Basaglia, Marina; Casella, Sergio. 2020. "Conversion of Starchy Waste Streams into Polyhydroxyalkanoates Using Cupriavidus necator DSM 545" Polymers 12, no. 7: 1496. https://doi.org/10.3390/polym12071496

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