Optimization of Lignin-Nanofiber-Filled Thermoplastic Starch Composite Film Production for Potential Application in Food Packaging

AbdulRasheed-Adeleke, Tawakaltu; Egwim, Evans Chidi; Afolabi, Ayo Samuel; Sadiku, Emmanuel Rotimi; Ochigbo, Stephen Shaibu

doi:10.20944/preprints202207.0203.v1

Cited by 2 publications

(1 citation statement)

References 14 publications

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“…It was discovered that the relationship between glucose concentration and the absorption of glucose by the yeast cells was inverse. S. maritimus leaves extract has been shown to have superior activity in increasing the uptake of glucose by cells of yeast and enhancing glucose absorption compared to metformin which is a common medicine that is well known for its propensity to induce hypoglycemia [30], this is in line with a previous study on hypoglycemia and suggests that the extract might be able to release glucose into the cells [31].…”

Section: Glucose Uptake By Yeast Activitysupporting

confidence: 73%

In Vitro Antioxidant and Antidiabetic properties of leaves aqueous extract of Sonchus maritimus

Chetehouna,

Derouiche,

Réggami

2024

Int J Chem Biochem Sci

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One of the most serious health issues facing worldwide today is diabetes mellitus. Although they have inevitable adverse effects, conventional antidiabetic medications are effective. However, plants might also provide an alternate source of anti-diabetic chemicals. This study was focused on determining the antioxidant activities of the leaves aqueous extract of Sonchus maritimus using 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging activity and ferric reducing ability assay power (FRAP), as well as its antidiabetic activities, which were performed using different protocols, including alpha-amylase inhibitory properties, glucose uptake by yeast cell’s ability, and glucose adsorption capacity. It was noted that S. maritimum extract exhibited moderate activities to scavenge the free radical DPPH and to reduce ferric iron to ferrous iron compared to standard (ascorbic acid). However, the aqueous extract of S. maritimus showed better alpha-amylase inhibitory activity compared to acarbose. It also showed good adsorption strength for binding to glucose molecules. Moreover, the extract showed excellent improvement in glucose uptake by yeast cells at different glucose concentrations in the medium compared to metformin. In conclusion, the aqueous extract of S. maritimus leaves is a promising source of potential antidiabetic compounds that can help prevent diabetes complications and alleviate associated oxidative stress.

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Section: Glucose Uptake By Yeast Activitysupporting

confidence: 73%

In Vitro Antioxidant and Antidiabetic properties of leaves aqueous extract of Sonchus maritimus

Chetehouna,

Derouiche,

Réggami

2024

Int J Chem Biochem Sci

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Enhancing the Mechanical Properties of Corn Starch Films for Sustainable Food Packaging by Optimizing Enzymatic Hydrolysis

et al. 2023

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The objective of this study was to investigate the effects of enzymatic hydrolysis using α-amylase from Bacillus amyloliquefaciens on the mechanical properties of starch-based films. The process parameters of enzymatic hydrolysis and the degree of hydrolysis (DH) were optimized using a Box–Behnken design (BBD) and response surface methodology (RSM). The mechanical properties of the resulting hydrolyzed corn starch films (tensile strain at break, tensile stress at break, and Young’s modulus) were evaluated. The results showed that the optimum DH for hydrolyzed corn starch films to achieve improved mechanical properties of the film-forming solutions was achieved at a corn starch to water ratio of 1:2.8, an enzyme to substrate ratio of 357 U/g, and an incubation temperature of 48 °C. Under the optimized conditions, the hydrolyzed corn starch film had a higher water absorption index of 2.32 ± 0.112% compared to the native corn starch film (control) of 0.81 ± 0.352%. The hydrolyzed corn starch films were more transparent than the control sample, with a light transmission of 78.5 ± 0.121% per mm. Fourier-transformed infrared spectroscopy (FTIR) analysis showed that the enzymatically hydrolyzed corn starch films had a more compact and solid structure in terms of molecular bonds, and the contact angle was also higher, at 79.21 ± 0.171° for this sample. The control sample had a higher melting point than the hydrolyzed corn starch film, as indicated by the significant difference in the temperature of the first endothermic event between the two films. The atomic force microscopy (AFM) characterization of the hydrolyzed corn starch film showed intermediate surface roughness. A comparison of the data from the two samples showed that the hydrolyzed corn starch film had better mechanical properties than the control sample, with a greater change in the storage modulus over a wider temperature range and higher values for the loss modulus and tan delta, indicating that the hydrolyzed corn starch film had better energy dissipation properties, as shown by thermal analysis. The improved mechanical properties of the resulting film of hydrolyzed corn starch were attributed to the enzymatic hydrolysis process, which breaks the starch molecules into smaller units, resulting in increased chain flexibility, improved film-forming ability, and stronger intermolecular bonds.

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Optimization of Lignin-Nanofiber-Filled Thermoplastic Starch Composite Film Production for Potential Application in Food Packaging

Cited by 2 publications

References 14 publications

In Vitro Antioxidant and Antidiabetic properties of leaves aqueous extract of Sonchus maritimus

In Vitro Antioxidant and Antidiabetic properties of leaves aqueous extract of Sonchus maritimus

Enhancing the Mechanical Properties of Corn Starch Films for Sustainable Food Packaging by Optimizing Enzymatic Hydrolysis

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