Screening and characterization of novel lipase producing Bacillus species from agricultural soil with high hydrolytic activity against PBAT poly (butylene adipate co terephthalate) co-polyesters

Kanwal, Aqsa; Zhang, Min; Sharaf, Faisal; Li, Chengtao

doi:10.1007/s00289-021-03992-4

Cited by 23 publications

(8 citation statements)

References 52 publications

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“…By breaking down large molecules into smaller ones through a process known as hydrolysis, water also breaks down pesticides, and pesticides can hydrolyze on the soil's surface, in the root zone, or wherever there is access to water [60]. At or close to the soil surface, warm water may have high hydrolysis activity, and the rate of hydrolysis decreases as the water temperature drops below the root zone and hydrolysis signifcantly slows down in deep groundwater [61].…”

Section: Chemical Degradationmentioning

confidence: 99%

Residue of Pesticides in Fruits, Vegetables, and Their Management in Ethiopia

Gelaye,

Negash

2024

Journal of Chemistry

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In Ethiopia, using pesticides to manage pests in the growing of fruits and vegetables is a standard practice. Various classes of pesticides have been approved to combat pests, but the majority of those in use now are outdated broad-spectrum insecticides with significant residual effects on crops of freshly eaten fruits and vegetables. This review reveals that Ethiopia’s assessment of the residual pesticide level in fruits and vegetables has been lacking. According to the reviewed literature, crops that are often treated with pesticides in many countries have significant residual pesticide levels. However, Ethiopia has not adequately reported on this issue. Furthermore, due to a lack of knowledge regarding the impact of pesticide residues on human health, Ethiopians frequently use pesticides improperly to control pests in fruits and vegetables. The majority of consumers eat their fruits and vegetables unprocessed, without washing or cooking them first. To reduce the risk of pesticide residues in fruits and vegetables for consumer safety and to battle the health effects of toxic chemicals in humans, monitoring pesticide residues and raising awareness about the adverse effects of pesticides on humans are urgently needed. Before they may be registered and sold, pesticide residues in fruits and vegetables as well as in the environment must also undergo proper testing and evaluation. New pesticide generations that have fewer side effects on fruits and vegetables must also be developed. By washing, peeling, canning, or boiling fruits and vegetables before consumption, the detrimental effects of pesticide residues on human health can be minimized.

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Section: Chemical Degradationmentioning

confidence: 99%

Residue of Pesticides in Fruits, Vegetables, and Their Management in Ethiopia

Gelaye,

Negash

2024

Journal of Chemistry

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“…[1][2][3][4] To solve the environmental concerns, biodegradable materials have received increasing attention in recent decades because of their biocompatibility, biodegradability, and sustainability. 5 Among them, poly(butylene adipate-co-terephthalate) (PBAT) is one of the most promising biodegradable polymers due to its good mechanical performance, easy processability, and biodegradable properties, and has a wide range of applications in food, 6,7 medical, [8][9][10][11] packaging, [12][13][14] textile, 15,16 agricultural, [17][18][19][20][21] and other fields. [22][23][24] It is well-known that structure determines properties.…”

Section: Introductionmentioning

confidence: 99%

Development of poly(butylene adipate‐co‐terephthalate) composites with high thermal oxidation stability using Chrysanthemum morifolium extract as a natural additive

Kong,

Li,

Zhuang

et al. 2024

Polymer Engineering & Sci

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Poly(butylene adipate‐co‐terephthalate) (PBAT) is one of the solutions to the energy crisis and white pollution. However, the poor thermo‐oxidative stability limits its wide applications. In this work, Chrysanthemum morifolium extract (CME) as a natural additive was used to modify the PBAT. The oxidation onset temperature (OOT) results showed that the CME could provide PBAT with high thermal oxidation stability. By the presence of 2.5 wt% CME, the OOT value of PBAT‐CME2.5 increased by 52°C compared with the neat PBAT. The outstanding antioxidant capacity is attributed to the excellent free radical quenching capacity of CME, whose main components consist of six kinds of phenolic compounds. Moreover, the PBAT‐CME1.5 composite could achieve the balance between the mechanical property and thermo‐oxidative stability, the OOT result of PBAT‐CME1.5 increased by 42°C, the tensile strength reached 103.1%, and the elongation at break could retain 91.4% of that of neat PBAT. Besides, the processing property, degradation performance, and surface hydrophobic nature of modified PBAT samples were all improved. This work proposes a facile method to obtain completely natural biodegradable composites to expand the practical applications of PBAT.Highlights The main components in CME are phenolic compounds. CME showed high free radical scavenging efficiency. CME improved the thermal oxidation stability of the PBAT matrix. The addition of CME could still maintain good mechanical properties of PBAT. The introduction of CME promoted the degradation of PBAT films.

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“…Lee et al investigated the degradation mechanism of PBS under the action of a lipase from Pseudomonas cepacia by studying the degradation products obtained, revealing a surface etching mechanism in the enzymatic degradation of PBS . However, many factors influence enzymatic degradation: substrate (chemical and physical nature, size, molecular weight distribution, thermal properties), type of enzyme, media (nature of the solvent, pH), temperature, agitation, and moisture, among others. , For instance, enzymatic degradation is enhanced in semicrystalline polymers with low molecular weight, under temperature conditions close to T m . This latter consideration might suppose a drawback for the self-stability of the enzymes, as high temperatures normally result in their denaturalization …”

Section: Introductionmentioning

confidence: 99%

Enzymatic Degradation Behavior of Self-Degradable Lipase-Embedded Aliphatic and Aromatic Polyesters and Their Blends

Peñas,

Beloqui,

Martínez de Ilarduya

et al. 2024

Biomacromolecules

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Over the past decade, the preparation of novel materials by enzyme-embedding into biopolyesters has been proposed as a straightforward method to produce self-degrading polymers. This paper reports the preparation and enzymatic degradation of extruded self-degradable films of three different biopolyesters: poly(lactic acid) (PLA), poly(butylene adipate-coterephthalate) (PBAT), and poly(butylene succinate) (PBS), as well as three binary/ternary blends. Candida antarctica lipase B (CalB) has been employed for the enzyme-embedding procedure, and to the best of our knowledge, the use of this approach in biopolyester blends has not been reported before. The three homopolymers exhibited differentiated degradation and suggested a preferential attack of CalB on PBS films over PBAT and PLA. Moreover, the self-degradable films obtained from the blends showed slow degradation, probably due to the higher content in PLA and PBAT. These observations pave the way for exploring enzymes capable of degrading all blend components or an enzymatic mixture for blend degradation.

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Screening and characterization of novel lipase producing Bacillus species from agricultural soil with high hydrolytic activity against PBAT poly (butylene adipate co terephthalate) co-polyesters

Cited by 23 publications

References 52 publications

Residue of Pesticides in Fruits, Vegetables, and Their Management in Ethiopia

Residue of Pesticides in Fruits, Vegetables, and Their Management in Ethiopia

Development of poly(butylene adipate‐co‐terephthalate) composites with high thermal oxidation stability using Chrysanthemum morifolium extract as a natural additive

Enzymatic Degradation Behavior of Self-Degradable Lipase-Embedded Aliphatic and Aromatic Polyesters and Their Blends

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