通过水热提取从米中获得生物活性分子的可持续增值,用于基托基生物塑料生产
Paulo Brites1, Mariana I S Aguiar2, Joana Gonçalves1
1CICECO - Aveiro Institute of Materials, Department of Materials and Ceramic Engineering, University of Aveiro, 3810-193 Aveiro, Portugal.
International journal of biological macromolecules
|May 22, 2024
概括
水热处理可持续地从大米中提取有价值的化合物,增强基托桑膜的灵活性和抗氧化特性. 这种环保方法利用农业副产品制成先进的食品包装材料.
科学领域:
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
- 食品包装技术 食品包装技术
背景情况:
- 米是丰富的农业副产品,其潜力未得到充分利用.
- 关键分子,如阿拉比诺基兰,蛋白质和,可以增强材料的性能.
- 目前的提取方法可能不是可持续的或高效的.
研究的目的:
- 从水热处理中可持续地从大米中提取有价值的化合物.
- 为了研究在不同温度下获得的提取物的组成.
- 为了将大米皮提取物纳入奇托桑薄膜并评估其特性.
主要方法:
- 在180,200和220°C的水热提取.
- 提取的化合物的表征 (蛋白质,,碳水化合物,阿拉比诺基兰).
- 在不同的比例 (1:0.1, 1:0.3, 1:0.5) 中将提取物纳入奇托桑薄膜.
- 评价薄膜的弹性 (延长,的模量) 和抗氧化能力.
主要成果:
- 在220°C的水热处理中,比传统方法产生的提取物多出3倍.
- 提取物含有丰富的蛋白质,化合物和阿拉比诺基兰.
- 具有最低提取比率的基托桑薄膜显示出更大的灵活性.
- 与对照片相比,薄膜的抗氧化能力增加了10倍以上.
结论:
- 水热提取是一种有效和可持续的方法,用于提升米的价值.
- 米提取物可以显著提高基托基膜的灵活性和抗氧化特性.
- 这种方法为开发先进的生物基食品包装材料提供了一个有前途的途径.
相关概念视频
01:25Production of Organic Acids
Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...
01:18Production of Biopesticides
Biopesticides offer a sustainable alternative to chemical pesticides, utilizing microbial agents to control agricultural pests. Bacillus thuringiensis (Bt) is a widely employed bacterium known for its potent insecticidal activity. Bt biopesticides are favored for their specificity to insect pests, minimal environmental impact, and natural degradability.Mechanism of Bt Toxin Action Bt produces insecticidal crystal (Cry) proteins during its sporulation phase. These proteins form parasporal...
01:27Bioplastics
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
01:25Biofuels
The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
01:28Microbial Bioremediation of Plastics
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...