PBAT/PLA humic acid biodegradable film applied on solar greenhouse tomato plants increased lycopene and decreased total acid contents

Lu, Lu; Han, Ying; Wang, Jiayin; Xu, Jing; Li, Yansu; Sun, Mintao; Zhao, Fang; He, Chunguang; Sun, Yong; Wang, Yijia; Huang, Pengfei; Yu, Xianchang; Wang, Jun; Yan, Yan

doi:10.1016/j.scitotenv.2023.162077

Cited by 21 publications

(6 citation statements)

References 44 publications

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“…It had its highest correlations with NOB (r=***0.987) and SOD (r=***0.992). Tomato plants treated with combination of farmyard manure vermicompost and reduced fertilizer showed higher yield, soluble solids, vitamin C, soluble sugar, and lycopene compared to other treatments [30]. 3.2.4 Superoxide Dismutase (SOD): Plants, under abiotic stresses, produce reactive oxygen species (ROS).…”

Section: Lycopene (Lyc)mentioning

confidence: 99%

Organic inputs with reduced chemical fertilizers improve yield, antioxidant components, and defense mechanisms in Tomato (var. Pusa Sheetal)

Verma,

Kumar,

Narayan

2024

BIO Web Conf.

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Chemical fertilizers are widely used to meet the nutritional needs of crops and increase yields; but, due to their high cost and abuse, certain adverse effects are causing the soil to deteriorate. A decline in soil organic carbon is being addressed through the use of vermicompost and farmyard manure as organic amendments, potentially reducing chemical fertilizer usage and ensuring sustainable crop nutrient supply. A study utilizing cattle farmyard manure and vermicompost, along with reduced chemical fertilizers, demonstrated that organic inputs significantly enhance tomato growth, physiology, yield, nutritional, and defense attributes. The study found that using farmyard manure and vermicompost in combination with reduced chemical fertilizers significantly increased plant height (14.2%), number of branches (26.7%), number of leaves (18.1%), fruit weight (30.7%), yield (89.4%), ascorbate peroxidase (15.4%), carotenoids (11.6%), vitamin C (15.4%), lycopene (17.2%), superoxide dismutase (18.5%), total antioxidant activity (55.4%), total soluble solids (9.9%), and vitamin C 7.9% in tomatoes, potentially reducing the need for chemical fertilizers. In addition, soil pH was slightly neutralized and soil organic carbon and available N, P, and K status of soils significantly improved. Tomatoes with higher levels of ascorbate peroxidase, carotenoids, lycopene, superoxide dismutase activity, total antioxidant activity, total soluble solids, and vitamin C, showed higher yields.

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Section: Lycopene (Lyc)mentioning

confidence: 99%

Organic inputs with reduced chemical fertilizers improve yield, antioxidant components, and defense mechanisms in Tomato (var. Pusa Sheetal)

Verma,

Kumar,

Narayan

2024

BIO Web Conf.

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“…9−11 PBAT has good thermal stability and processability, 12 and its melting point is similar to that of polyethylene, and so it is considered as a promising substitute for the traditional plastic mulch film made of polyethylene. 13,14 However, PBAT also has drawbacks, such as low melt strength, modulus and tensile strength, as well as a poor barrier to H 2 O, O 2 , and CO 2 . 15,16 Adding chain extenders is one of the methods to improve the mechanical properties, melt strength, and processability of PBAT.…”

Section: Introductionmentioning

confidence: 99%

“…Replacing the traditional plastic mulching film with fully biodegradable ones should be the main solution to avoid plastic pollution in farmland . Poly(butylene adipate- co -terephthalate) (PBAT) is a biodegradable thermoplastic biopolyester random copolymer formed by polycondensation of butanediol, adipic acid, and terephthalic acid, which shows good biodegradability and mechanical properties due to the existence of aliphatic functional groups and the aromatic structures in the molecular chain. − PBAT has good thermal stability and processability, and its melting point is similar to that of polyethylene, and so it is considered as a promising substitute for the traditional plastic mulch film made of polyethylene. , However, PBAT also has drawbacks, such as low melt strength, modulus and tensile strength, as well as a poor barrier to H 2 O, O 2 , and CO 2 . , …”

Section: Introductionmentioning

confidence: 99%

Cyclodextrin-Based Isocyanate Functional Chain Extender and Its Application in Poly(butylene adipate-co-terephthalate)-Based Agricultural Materials

Han,

Fan,

Jiang

et al. 2024

ACS Appl. Polym. Mater.

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Replacing traditional plastics with biodegradable materials, such as poly(butylene adipate-co-terephthalate) (PBAT), is a reliable way to avoid farmland environmental pollution. However, the physical and mechanical properties of PBAT still have much to improve. Adding chain extenders to modify PBAT is one of the primary means. So far, the main chain extenders used are epoxy, anhydride, oxazoline, and isocyanate. In this paper, a blocked isocyanate chain extender with biological cyclodextrin as the skeleton material was designed and prepared(B3H35). When it was added to PBAT for melt blending at high temperature, the active isocyanate groups released by its deblocking reaction wound reacted with the terminal hydroxyl groups or carboxylic acid groups of PBAT to extend the molecular chain of PBAT, and then, a three-dimensional network was constructed based on dynamic hydrogen bonding, molecular entanglement, and physical cross-linking. As a result, the strength and toughness of PBAT improved simultaneously. Compared with pure PBAT, the tensile strength, elongation at break, and toughness of PBAT/B3H35 (2 wt %) increased by 17.7, 8.1, and 31.6%, respectively. In addition, 3,5-dimethylpyrazole, used as a blocking agent in this paper, is also released by deblocking during melt blending and endows PBAT/B3H35 with an excellent nitrification inhibition effect in agricultural soil. The experimental results show that the nitrification inhibition rate of the PBAT/B3H35 (3 wt %) reaches 80.64% after 35 days of landfill, significantly improving the utilization rate of the nitrogen fertilizer, thus reducing greenhouse gas emissions and environmental pollution. Overall, this work provides an idea and direction for designing and preparing functional chain extenders with simultaneous enhancement and toughening effects and nitrification inhibition functions for agricultural materials.

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“…1a). Due to good mechanical and special barrier properties (such as water vapor permeability 3 ), PBAT has been widely used in food packaging, agriculture, and other industries 4,5 . Although PBAT is prone to be decomposed in the environment, its natural degradation rate is relatively slow due to the existence of terephthalate group 6,7,8 .…”

Section: Introductionmentioning

confidence: 99%

Efficient biodegradation of poly(butylene adipate-co-terephthalate) in mild temperature by cutinases derived from a marine fungus

Sun,

Fei,

et al. 2024

Preprint

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Poly(butylene adipate-co-terephthalate) (PBAT) is a polyester widely used in various fields and its waste gradually accumulates in the environment, posing ecological risks. Enzymatic hydrolysis holds great potential in the end-of-life management of PBAT, but reported enzymes need to be incubated at a high temperature (e.g. 70 °C), which is supposed to cost huge amount of energy and thereby limiting its wide industrial application. Here, we found that the marine fungus Alternaria alternata FB1 could efficiently degrade PBAT in the moderate temperature (e. g. 37 °C). Two fungal cutinases (named AaCut4 and AaCut10) were predicted to determine the degradation process by establishing a hidden Markov model of PBAT hydrolases, which were verified by an in vivo gene knockout method. The in vitro expressed AaCut10 could completely depolymerize the PBAT film in 48 h, whereas AaCut4 achieved a 63.59% breakdown in 96 h at 37 °C, and no product inhibition of either enzyme was detected. Targeting AaCut10, we accomplished to increase the yield of terephthalic acid monomer to 96.01% in 96 h at 37 °C through performing site-directed mutagenesis and supplementing Ca2+ or Mg2+ in the reaction buffer. We also found PBAT hydrolases broadly distributed in different species and environments, indicating their great potential in resolving plastics contamination. Overall, our study provides novel enzyme candidates for efficient decomposition of PBAT in mild temperature and paves a way to recover plastic wastes in a low energy consumption manner, which is important for sustainable use of PBAT waste.

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PBAT/PLA humic acid biodegradable film applied on solar greenhouse tomato plants increased lycopene and decreased total acid contents

Cited by 21 publications

References 44 publications

Organic inputs with reduced chemical fertilizers improve yield, antioxidant components, and defense mechanisms in Tomato (var. Pusa Sheetal)

Organic inputs with reduced chemical fertilizers improve yield, antioxidant components, and defense mechanisms in Tomato (var. Pusa Sheetal)

Cyclodextrin-Based Isocyanate Functional Chain Extender and Its Application in Poly(butylene adipate-co-terephthalate)-Based Agricultural Materials

Efficient biodegradation of poly(butylene adipate-co-terephthalate) in mild temperature by cutinases derived from a marine fungus

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