Hydrogel synthesis based on lignin/sodium alginate and application in agriculture

Song, Bin; Liang, Hongxu; Sun, Ruru; Peng, Pai; Jiang, Yun; She, Diao

doi:10.1016/j.ijbiomac.2019.12.082

Cited by 160 publications

(90 citation statements)

References 46 publications

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“…Likewise, the soil in this location presented a higher sodium content, which functions as osmotic agent that favors the efficient water absorption (Song et al 2020). Additionally, the soil in this location is loam type, different to Conca and SJB that is clayey type.…”

Section: Discussionmentioning

confidence: 81%

Phenolic compounds and antioxidant activity of methanolic extracts from leaves and flowers of chilcuague ( Heliopsis longipes , Asteraceae)

et al. 2020

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Background: Heliopsis longipes root is the widely used organ from the plant due to its culinary and medicinal importance. Nevertheless, during its collection the foliage is discarded. Therefore, it is required to perform studies about the phytochemical content with biological activity present in the different plant organs of the foliage, for a better exploitation of the plant. Hypothesis: The concentration of phenolic compounds with antioxidant activity varies according to the type of plant organ and the geographic location of the plant collection. Study species: Heliopsis longipes Site and years of study: The H. longipes plants were collected in three locations (Conca, San Juan Buenaventura and Beltran) from Sierra Gorda of Mexico, between 2017 and 2018. Methods: In this study, they were analyzed the methanolic extracts from H. longipes leaves and flowers, in order to determine the content of the phenolic compounds and scavenging of radicals activity (DPPH• and ABTS•+). Further characterization of the extracts was carried out by chromatography (UPLC). Results: The total content of polyphenols, flavonoids and condensed tannins varied in depending on the type of plant organ and the origin site of H. longipes, being the leaves of Beltran those that represent the best source of phenolic compounds with scavenging activity of the radicals DPPH• and ABTS•+. In the extracts, phenolic acids and flavonoids were identified. Conclusions: The geographical climatic conditions influence the phenolic content and antioxidant activity of the methanolic extracts from leaves and flowers of H. longipes.

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Section: Discussionmentioning

confidence: 81%

Phenolic compounds and antioxidant activity of methanolic extracts from leaves and flowers of chilcuague ( Heliopsis longipes , Asteraceae)

et al. 2020

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“…In spectra of PEGDMA/SA (e), the peaks at 1,718 cm −1 , 1,632 cm −1 , and 1,107 cm −1 were assigned to C=O, C=C, and C–O–C groups, which belong to PEGDMA, 39 while peaks at 1,034 cm −1 , 1,603 cm −1 , and 1,415 cm −1 were assigned to O–H, symmetric, and asymmetric stretching vibration of –COO– of SA 40,41 . For spectra of KR/PEGDMA/SA (c) and PEG‐ g ‐KR/SA (d), characteristic peaks of KR, PEG, and SA can be observed, and it can be found that some peak intensities were weakened due to strong hydrogen bonding between components after blending 32,42 …”

Section: Resultsmentioning

confidence: 99%

Preparation of PEG‐modified wool keratin/sodium alginate porous scaffolds with elasticity recovery and good biocompatibility

Chen

Liu

et al. 2021

J Biomed Mater Res

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To improve mechanical properties of keratin (KR) porous scaffolds, we prepared a PEGylated keratin through thiol-ene click reaction. Several porous scaffolds were prepared by blending PEGylated keratin with sodium alginate (SA). The surface morphology, mechanical properties, and porosity of scaffolds were detailed studied at different KR/SA proportions. The results showed the content of SA had an effect on pore formation and mechanical properties. When the mass ratio of KR to SA was 2:1, the stress of yield point of the keratin porous scaffold reached 1.24 MPa, and also showed good deformation recovery ability. The PEGylated keratin porous scaffold had a high porosity and great cytocompatibility. Its' porosity is up to 81.7% and the cell viability is about 117.78%. This allows it to absorb the simulated plasma quickly (9.20 ± 0.37 g/g). In addition, the structural stability and acid-base stability of the keratin porous scaffold were also improved after PEGylation. Overall, the PEGylated keratin porous scaffold will be promising in tissue materials due to its great physical, chemical, and biological properties.

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“…As a result of the emphasis on environmental protection in recent times, great interest has been shown in developing biodegradable hydrogels based on renewable bioresources (e.g., derivatives from agricultural crops or industrial by-products) [ 5 , 6 , 7 ]. Such environmentally friendly hydrogels have found various applications, including in agriculture, due to their low-cost, sustainability and biodegradability [ 6 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Biopolymer Hydrogel Based on Acid Whey and Cellulose Derivatives for Enhancement Water Retention Capacity of Soil and Slow Release of Fertilizers

et al. 2021

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This study describes the development of a renewable and biodegradable biopolymer-based hydrogel for application in agriculture and horticulture as a soil conditioning agent and for release of a nutrient or fertilizer. The novel product is based on a combination of cellulose derivatives (carboxymethylcellulose and hydroxyethylcellulose) cross-linked with citric acid, as tested at various concentrations, with acid whey as a medium for hydrogel synthesis in order to utilize the almost unusable by-product of the dairy industry. The water uptake of the hydrogel was evaluated by swelling tests under variations in pH, temperature and ion concentration. Its swelling capacity, water retention and biodegradability were investigated in soil to simulate real-world conditions, the latter being monitored by the production of carbon dioxide during the biodegradation process by gas chromatography. Changes in the chemical structure and morphology of the hydrogels during biodegradation were assessed using Fourier transform infrared spectroscopy and scanning electron microscopy. The ability of the hydrogel to hold and release fertilizers was studied with urea and KNO3 as model substances. The results not only demonstrate the potential of the hydrogel to enhance the quality of soil, but also how acid whey can be employed in the development of a soil conditioning agent and nutrient release products.

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Hydrogel synthesis based on lignin/sodium alginate and application in agriculture

Cited by 160 publications

References 46 publications

Phenolic compounds and antioxidant activity of methanolic extracts from leaves and flowers of chilcuague ( Heliopsis longipes , Asteraceae)

Phenolic compounds and antioxidant activity of methanolic extracts from leaves and flowers of chilcuague ( Heliopsis longipes , Asteraceae)

Preparation of PEG‐modified wool keratin/sodium alginate porous scaffolds with elasticity recovery and good biocompatibility

Biopolymer Hydrogel Based on Acid Whey and Cellulose Derivatives for Enhancement Water Retention Capacity of Soil and Slow Release of Fertilizers

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