Process Biochemistry, Год журнала: 2024, Номер 150, С. 80 - 93
Опубликована: Дек. 23, 2024
Язык: Английский
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
1
Environmental Science and Pollution Research, Год журнала: 2025, Номер unknown
Опубликована: Апрель 16, 2025
Язык: Английский
Процитировано
1
Bioengineered, Год журнала: 2025, Номер 16(1)
Опубликована: Янв. 30, 2025
Polyhydroxyalkanoates (PHA) are bioplastics produced by few bacteria as intracellular lipid inclusions under excess carbon source and nutrient-deprived conditions. These polymers biodegradable resemble petroleum-based plastics. The rising environmental concerns have increased the demand for PHA, but low yield in wild-type bacterial strains limits large-scale production. An improvement PHA production can be achieved genetically engineering removing competitive pathways that divert metabolites away from biosynthesis, cloning strong promotors to overexpress genes involved biosynthesis constructing non-native metabolic feed desired monomers were obtained elimination of biosynthetic pathway. chain length degradation specific-gene deletion β-oxidation pathway resulted accumulation having high length. A controlled polymer was novel deleting native genome non-PHA producers. present review attempts showcase genetic modification approaches conducted so far enhance with a special focus on gene various bacteria.
Язык: Английский
Процитировано
1
Process Safety and Environmental Protection, Год журнала: 2025, Номер unknown, С. 106809 - 106809
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
International Journal of Molecular Sciences, Год журнала: 2024, Номер 25(18), С. 9929 - 9929
Опубликована: Сен. 14, 2024
Over the last ten years, researchers’ efforts have aimed to replace classic linear economy model with circular model, favoring green chemical and industrial processes. From this point of view, biologically active molecules, coming from plants, flowers biomass, are gaining considerable value. In study, firstly we focus on development a protocol obtain purification anthocyanins flower Callistemon citrinus, based simulation response surface optimization methodology. After that, utilize them manufacture add new properties bioplastics belonging class 3, modified polyvinyl alcohol (PVA) increasing amounts 0.10 1.00%. The polymers analyzed monitor morphological changes, optical properties, mechanical antioxidant antimicrobial activities. Fourier transform infrared spectroscopy (FTIR) spectra materials show characteristic bands PVA alone modification band at around 1138 cm−1 1083 cm−1, showing an influence anthocyanins’ addition sequence crystalline amorphous structures starting materials, as also shown by results tests. These showed increase in thickening (from 29.92 μm approx. 37 μm) hydrophobicity concomitant added (change wettability water 14° 31°), decreasing poor water/moisture resistance that decreases its strength limits application food packaging, which makes ideal candidates for biodegradable packaging extend shelf-life food. functionalization determines opacity, 2.46 3.42 T%/mm, acquisition activity against 2,2-diphenyl-1-picrylhdrazyl 2,2′-azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid) radicals and, ferric reducing power assay, (bactericidal) different Staphylococcus aureus strains maximum tested concentration (1.00% anthocyanins). On whole, making it suitable purposes, highlighted fresh-keeping test.
Язык: Английский
Процитировано
2
Process Biochemistry, Год журнала: 2024, Номер 150, С. 80 - 93
Опубликована: Дек. 23, 2024
Язык: Английский
Процитировано
2