Polyhydroxyalkanoate production from food packaging waste paper

IF 1.3 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Bioresources Pub Date : 2023-11-27 DOI:10.15376/biores.19.1.539-551

Wei-Lin Tu, Yu-Chuan Hsiung, Chen-Hsien Liang, Jung-Mei Huang, Chung-Mao Ou, Gia-Luen Guo

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Abstract

This study evaluated the production of marine biodegradable plastics, specifically polyhydroxyalkanoates (PHAs), using waste paper from food containers as a novel material source. The results showed that adding dilute sulfuric acid as a pretreatment may have a negative impact on enzyme hydrolysis efficiency. Without pretreatment, the highest glucose concentration was observed in the 50-min heating group. In the experimental group with 1% dilute sulfuric acid as a pretreatment, the highest average glucose concentration was observed in the 25-min treatment group. In flask scale experiments, the C/N ratio was controlled at 10, 20, and 30. The results showed that when the C/N ratio was 10, the PHA/CDM ratios were 16.3 and 23.6 at 48 and 72 h, respectively. After 96 h of cultivation using hydrolysis liquid from the waste paper container as the sole carbon source in a 5-L scale experiment, the PHA/CDM ratio was 28.7 and the PHA concentration was 0.95 g/L. The potential bacterial strain in this study was confirmed to be a Bacillus genus bacterium after strain identification. The signal peaks indicated that the PHA obtained from the Bacillus sp. production process was PHB.

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利用食品包装废纸生产聚羟基烷酸酯

本研究评估了利用食品容器废纸作为新型材料来源生产海洋生物降解塑料（特别是聚羟基烷酸酯（PHA））的情况。结果表明，添加稀硫酸作为预处理可能会对酶水解效率产生负面影响。在没有预处理的情况下，50 分钟加热组的葡萄糖浓度最高。在添加 1%稀硫酸作为预处理的实验组中，25 分钟处理组的平均葡萄糖浓度最高。在烧瓶规模实验中，C/N 比分别控制在 10、20 和 30。结果表明，当 C/N 比为 10 时，48 小时和 72 小时的 PHA/CDM 比率分别为 16.3 和 23.6。在 5 升规模的实验中，以废纸容器中的水解液为唯一碳源进行培养 96 小时后，PHA/CDM 比率为 28.7，PHA 浓度为 0.95 g/L。经菌株鉴定，本研究中的潜在细菌菌株被确认为芽孢杆菌属细菌。信号峰表明，从芽孢杆菌生产过程中获得的 PHA 为 PHB。

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来源期刊

Bioresources 工程技术-材料科学：纸与木材

CiteScore

2.90

自引率

13.30%

发文量

397

审稿时长

2.3 months

期刊介绍： The purpose of BioResources is to promote scientific discourse and to foster scientific developments related to sustainable manufacture involving lignocellulosic or woody biomass resources, including wood and agricultural residues. BioResources will focus on advances in science and technology. Emphasis will be placed on bioproducts, bioenergy, papermaking technology, wood products, new manufacturing materials, composite structures, and chemicals derived from lignocellulosic biomass.