Fabrication and Characterization of Starch-Based Biodegradable Polymer with Polyvinyl Alcohol

Pokhrel, Shanta; Sundari, Lalita

doi:10.3126/jncs.v40i0.27283

Cited by 4 publications

(2 citation statements)

References 37 publications

(46 reference statements)

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“…On the other hand, the zone from 1575 to 1300 cm −1 is a mixed zone including vibratory bands of fatty acids, proteins, and polysaccharides (e.g., C=O bands of amide groups I, C=C bands of trans and cis unconjugated lipids, N‐H bands of amide groups II, etc.). Finally, polysaccharide peaks dominate the range between 950 and 810 cm −1 (Moros et al., 2006; Papadopoulou et al., 2021; Pokhrel & Rai, 2019).…”

Section: Resultsmentioning

confidence: 99%

Development and characterization of probiotic (co)encapsulates in biopolymeric matrices and evaluation of survival in a millet yogurt formulation

Kouamé

Bora

et al. 2022

Journal of Food Science

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The formulation of probiotics‐enriched products still remains a challenge for the food industry due to the loss of viability, mainly occurring upon consumption and during storage. To tackle this challenge, the current study investigated the potential of using sodium alginate and inulin (SIN) in combination with various encapsulating materials such as skim milk (SKIM), whey protein concentrate (WPC), soy protein concentrate (SPC), and flaxseed oil (FS) to increase the viability of Lactobacillus casei upon freeze‐drying, under simulated gastrointestinal conditions, during 28 days of storage at 4°C, and in a formulation of millet yogurt. Microstructural properties of microcapsules and co‐microcapsules by SEM, oxidative stability of flaxseed oil in co‐microcapsules, and physicochemical and sensory analysis of the product were performed. The produced microcapsules (SIN‐PRO‐SKIM, SIN‐PRO‐WP, and SIN‐PRO‐SP) and co‐microcapsules (SIN‐PRO‐FS‐SKIM, SIN‐PRO‐FS‐WP, and SIN‐PRO‐FS‐SP) had a high encapsulation rate >90%. Moreover, encapsulated and co‐encapsulated strains exhibited a high in vitro viability accounting for 9.24 log10 CFU/g (SIN‐PRO‐SKIM), 8.96 log10 CFU/g (SIN‐PRO‐WP), and 8.74 log10 CFU/g (SIN‐PRO‐SP) for encapsulated and 10.08 log10 CFU/g (SIN‐PRO‐FS‐SKIM), 10.03 log10 CFU/g (SIN‐PRO‐FS‐WP), and 10.14 log10 CFU/g (SIN‐PRO‐FS‐SP) for co‐encapsulated. Moreover, encapsulated and co‐encapsulated cells showed higher survival upon storage than free cells. Also, the SEM analysis showed spherical particles of 77.92–230.13 µm in size. The physicochemical and sensory analysis revealed an interesting nutritional content in the millet yogurt. The results indicate that the SIN matrix has significant promise as probiotic encapsulating material as it may provide efficient cell protection while also providing considerable physicochemical and nutritional benefits in functional foods.

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Section: Resultsmentioning

confidence: 99%

Development and characterization of probiotic (co)encapsulates in biopolymeric matrices and evaluation of survival in a millet yogurt formulation

Kouamé

Bora

et al. 2022

Journal of Food Science

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“…[16] Polyvinyl alcohol (PVA) is semicrystalline, non-toxic, water-soluble, having excellent optical and physical properties. [17,18] The semicrystallinity of PVA showed important features rather than amorphous one. [14,19] Furthermore, the good compatibility of PVP with polyvinyl alcohol (PVA) also enhances the film-forming properties of the PVP/PVA blended polymers.…”

Section: Introductionmentioning

confidence: 99%

Peanut Shells Cellulose Based Biodegradable Nanocomposites with Polyvinyl Pyrrolidone (PVP) and Polyvinyl Alcohol (PVA)

Pokhrel

Karki

2023

Macromolecular Symposia

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Cellulose is the most abundant plant based biopolymer on earth which provides excellent properties to polymer nanocomposites such as high mechanical properties, high strength, low thermal expansion properties, low density, and biodegradability. The recent demand in materials research is to develop smart materials which comprise excellent features such as enhanced mechanical properties and thermal stability, biodegradability, being eco‐friendly, and low‐cost. Therefore, the objective of this research is to extract cellulose fibers from agricultural waste, i.e., peanut shell as an abundant source of agricultural byproducts and explore the potentiality of polyvinyl alcohol (PVA)/polyvinyl pyrrolidone (PVP)/cellulose blends as an alternative of conventional plastics. The blend which has higher concentration of cellulose shows the higher acid absorption. FT‐IR of PVA/PVP/cellulose confirms the good interaction between the constituents of the blend. Antimicrobial activities of cellulose and their blend with polymer are evaluated and found maximum against Gram negative bacteria (Escherichia coli) than the Gram positive bacteria (Bacillus subtilis). Degradation behavior of blend is found directly proportional to cellulose content, i.e., highest shown by 20% cellulose film. Hence, PVP/PVA/cellulose blends show desired degradable properties and hence can be an alternative for use of conventional plastics.

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Electrochemical and AC Conductivity Studies of PVA based Gel Polymer Electrolytes for Silver Ion Batteries

et al. 2022

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An effort has been made to synthesize PVA based gel polymer electrolyte films by means of solution casting technique doped with silver ion in different concentration of polymer and salt (80:20, 70:30 and 60:40 wt.%). The resulting PVA and CH3COOAg gel polymer electrolyte (GPE) material came to be analyzed through various characterization methods for instance XRD, FTIR and UV-Vis spectrophotometry. The analysis of FTIR and XRD confirmed the polymer and salt complexation. The ionic conductivity for prepared GPE was evaluated by means of AC impedance studies at room temperature. The highest value of ionic conductivity found for PVA: CH3COOAg (30 wt.%) system was found to be 1.422 × 10-5 S cm-1. The optical and cyclic voltammetric analysis have been examined and excellent cyclic, reversible performance was observed for the electrolyte PVA:CH3COOAg (70:30 wt.%) up to 10 cycles.

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Fabrication and Characterization of Starch-Based Biodegradable Polymer with Polyvinyl Alcohol

Cited by 4 publications

References 37 publications

Development and characterization of probiotic (co)encapsulates in biopolymeric matrices and evaluation of survival in a millet yogurt formulation

Development and characterization of probiotic (co)encapsulates in biopolymeric matrices and evaluation of survival in a millet yogurt formulation

Peanut Shells Cellulose Based Biodegradable Nanocomposites with Polyvinyl Pyrrolidone (PVP) and Polyvinyl Alcohol (PVA)

Electrochemical and AC Conductivity Studies of PVA based Gel Polymer Electrolytes for Silver Ion Batteries

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