PREPARATION AND CHARACTERIZATION OF ANTIBACTERIAL FILM BASED ON CARBOXYMETHYLCELLULOSE FROM GEBANG LEAF (Coryphautan), POLYVINYL ALCOHOL ANDCITRIC ACID

Siregar, Fatimah Khaerani; Nasution, Darwin Yunus; Muis, Yugia; Kaban, D. Y.

doi:10.31788/rjc.2019.1225126

Cited by 6 publications

(6 citation statements)

References 33 publications

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“…A maximum inhibition zone was recorded of 22 mm with 12 (wt%) CA against K. pneumoniae and 12 mm as the lowest measured inhibition zone with 10 (wt%) CA was applied against E. coli. These results are consistent with obtained results by Mahdavinia et al [33] and Siregar et al [34], who reported that CA crosslinked PVA-CMC films have powerful antimicrobial properties. These results could be attributed to citric acid possesses non dissociated form (-COOH) that can permeate the bacterial cell membrane, and allowing to donate hydrogen ions to the system.…”

Section: Antimicrobial Activitysupporting

confidence: 93%

PVA/CMC/Attapulgite Clay Composite Hydrogel Membranes for Biomedical Applications: Factors Affecting Hydrogel Membranes Crosslinking and Bio-evaluation Tests

et al. 2022

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Herein, polyvinyl alcohol-carboxymethyl cellulose (PVA-CMC) composite hydrogel membranes were prepared using solution-casting method, where citric acid (CA) was added as crosslinker in different ratios of (7, 10 and12 wt%). Attapulgite clay extracted from Northwestern Desert of Borg El-Arab, Egypt; was incorporated as nanofiller (1, 2, 4, and 5 wt%) into membranes for improving their mechanical/ thermal stability. Results revealed that, physicochemical properties of membranes e.g. swelling%, tensile strength and morphology of membranes affected significantly by different clay concentrations and citric acid crosslinker. Also, attapulgite clay with concentration 1 (wt%) enhanced mechanical strength of composite membranes, compared to other clay concentrations. Furthermore, protein adsorption %, hydrolytic degradation, hemolysis (%) and antimicrobial activity significantly affected by clay contents and CA concentrations. Four bacterial pathogens e.g. Candida albicans, Escherichia coli, Klebsiella pneumoniae, and Bacillus cereus were used for testing antimicrobial activity of prepared membranes. Results referred to increasing of clay contents led to a high hemolysis %; however, increasing CA concentration significantly reduced hemolysis %. Meanwhile, membranes with low clay contents offered the most effective resistance against tested microbes. These findings are referring to the ability of using PVA-CMC-attapulgite composite membranes crosslinked by CA as good candidate of biomaterials for dermal wound dressings.

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Section: Antimicrobial Activitysupporting

confidence: 93%

PVA/CMC/Attapulgite Clay Composite Hydrogel Membranes for Biomedical Applications: Factors Affecting Hydrogel Membranes Crosslinking and Bio-evaluation Tests

et al. 2022

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“…Overall, 2% xylan and modified xylan biofilms exhibited rough morphological surfaces as compared to 1% xylan and modified xylan biofilms. It was possibly due to difficulty for the large number of polymers to cross‐link with CA (Siregar et al ., 2019).…”

Section: Resultsmentioning

confidence: 99%

“…The antibacterial activity of xylan biofilms was found to be less than that of CMX biofilms but more than that of AX biofilms as SEM images revealed that AX had great affinity to cross-link with CA. However, standard tetracycline showed larger ZOI than biofilms Siregar et al (2019). observed that CMC/PVA/CA films demonstrated antibacterial effects against Escherichia and Staphylococcus.…”

mentioning

confidence: 89%

Structural, antioxidant, antibacterial and biodegradation properties of rice straw xylan (native and modified) based biofilms

Kapil

Kaur

Dudeja

et al. 2022

Int J of Food Sci Tech

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Summary The present study involved valorisation of rice straw by conversion of its constituent polymer xylan and chemically modified xylans into biofilms. Hemicellulosic xylan (19.94%) extracted with 10% NaOH (85 °C, 2.6 h) was chemically modified to acetylated (AX) and carboxymethylated xylan (CMX). Biofilms were prepared by reaction of xylan/modified xylan (1% and 2%) with polyvinyl alcohol using eco‐friendly and cheap cross‐linker citric acid and glycerol as plasticiser. 2% xylan biofilms showed maximum inhibition (94.25%) of DPPH at 4 mg mL−1 which was due to large number of free ‐OH groups (highest intensity of ‐OH absorption bands in FT‐IR spectra). 2% CMX biofilms exhibited maximum antibacterial effectiveness with diameter of zone of inhibition 33.5 and 30.5 mm against Bacillus subtilis and Pseudomonas sp., respectively. This may be due to large number of undissociated COO− ions (citric acid) in CMX biofilms which was evident from lesser cross‐linking observed in their SEM images. 2% CMX biofilms also showed the highest biodegradation (86.5%) which may be attributed to formation of ether bonds along with ester bonds leading to their fast degradation. Owing to good bioactive properties of prepared biofilms, it was concluded that these can be appropriate material for food packaging by replacing synthetic plastics.

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“…Among the biopolymers used to prepare food packaging, carboxymethyl cellulose (CMC) has been widely used owing to its biodegradability, non-toxicity and low cost (Atta et al 2021a , b ). CMC can be blended with a biocompatible polymer such as polyvinyl alcohol (PVA) to enhance the physical and mechanical properties (Siregar et al 2019 ). Muppalla et al ( 2014 ) found that the incorporation of 4% citric acid into PVA/CMC/aloe vera film led to the formation of ester bonds resulting in 75% increase in tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Facile fabrication of green synthesized silver-decorated magnetic particles for coating of bioactive packaging

et al. 2022

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To avoid bacterial and viral infections on food products, the use of antibacterial and antiviral packaging offers great benefit to the food industry. In this study, the coating of paper packaging with silver-decorated magnetic particles (Ag@Fe 3 O 4 ) was developed. The Ag@Fe 3 O 4 was prepared by a facile and environmentally friendly method using extracted spent coffee grounds (ex-SCG). The effects of Ag@Fe 3 O 4 content on properties of coated paper were investigated. The overall properties of coated paper improved when the Ag@Fe 3 O 4 content increased up to 0.15%w/v. An increase in tensile strength of 154.01% and a decrease in water vapor permeability of 48.50% were found in coated paper with 0.15%w/v Ag@Fe 3 O 4 . Furthermore, the coated paper also exhibited the synergistic effect on antibacterial activities against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). The release of metal ions in food simulants and kinetic release parameters were also studied. The release of silver ions and ferrous ions in food simulants met the requirement of overall migration limit of the European Standard. The paper coated with 0.15%w/v Ag@Fe 3 O 4 had better capabilities to maintain quality and extend shelf-life of tomatoes. The obtained Ag@Fe 3 O 4 coated paper is promising for bioactive food packaging to retain food freshness. Supplementary Information The online version contains supplementary material available at 10.1007/s10570-022-04636-0.

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PREPARATION AND CHARACTERIZATION OF ANTIBACTERIAL FILM BASED ON CARBOXYMETHYLCELLULOSE FROM GEBANG LEAF (Coryphautan), POLYVINYL ALCOHOL ANDCITRIC ACID

Cited by 6 publications

References 33 publications

PVA/CMC/Attapulgite Clay Composite Hydrogel Membranes for Biomedical Applications: Factors Affecting Hydrogel Membranes Crosslinking and Bio-evaluation Tests

PVA/CMC/Attapulgite Clay Composite Hydrogel Membranes for Biomedical Applications: Factors Affecting Hydrogel Membranes Crosslinking and Bio-evaluation Tests

Structural, antioxidant, antibacterial and biodegradation properties of rice straw xylan (native and modified) based biofilms

Facile fabrication of green synthesized silver-decorated magnetic particles for coating of bioactive packaging

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