Sugarcane bagasse derived nanocellulose reinforced with frankincense (Boswellia serrata): Physicochemical properties, biodegradability and antimicrobial effect for controlling microbial growth for food packaging application

Plant bioactive compounds have antimicrobial and antioxidant activities that allow them to be used as a substitute for synthetic chemical additives in both food and food packaging. To improve its sensory and bactericidal effects, its use in the form of effective combinations has emerged as an interesting possibility in the food industry. In this study, the antimicrobial activities of essential oils (EOs) of cinnamon bark, cinnamon leaves, and clove and the pure compounds vanillin, eugenol, and cinnamaldehyde were investigated individually and in combination against Listeria monocytogenes and Escherichia coli O157:H7. The possible interactions of combinations of pure compounds and EOs were performed by the two-dimensional checkerboard assay and isobologram methods. Vanillin exhibited the lowest antimicrobial activity (MIC of 3002 ppm against L. monocytogenes and 2795 ppm against E. coli O157:H7), while clove and cinnamon bark EOs exhibited the highest antimicrobial activity (402–404 against L. monocytogenes and 778–721 against E. coli O157:H7). For L. monocytogenes, pure compound eugenol, the main component of cinnamon leaves and clove, showed lower antimicrobial activity than EOs, which was attributed to the influence of the minor components of the EOs. The same was observed with cinnamaldehyde, the main component of cinnamon bark EO. The combinations of vanillin/clove EO and vanillin/cinnamon bark EO showed the most synergistic antimicrobial effect. The combination of the EOs of cinnamon bark/clove and cinnamon bark/cinnamon leaves showed additive effect against L. monocytogenes but indifferent effect against E. coli O157:H7. For L. monocytogenes, the best inhibitory effects were achieved by cinnamon bark EO (85 ppm)/vanillin (910 ppm) and clove EO (121 ppm)/vanillin (691 ppm) combinations. For E. coli, the inhibitory effects of clove EO (104 ppm)/vanillin (1006 ppm) and cinnamon leaves EO (118 ppm)/vanillin (979 ppm) combinations were noteworthy. Some of the tested combinations increased the antimicrobial effect and would allow the effective doses to be reduced, thereby offering possible new applications for food and active food packaging.

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Physicochemical Properties and Biological Activity of Active Films Based on Corn Peptide Incorporated Carboxymethyl Chitosan

Coatings ◽

10.3390/coatings11050604 ◽

2021 ◽

Vol 11 (5) ◽

pp. 604

Author(s):

Liyan Wang ◽

Liang Lei ◽

Kang Wan ◽

Yuan Fu ◽

Hewen Hu

Keyword(s):

Antioxidant Activity ◽

Physicochemical Properties ◽

Food Packaging ◽

Biological Activities ◽

Radical Scavenging ◽

Reducing Power ◽

Carboxymethyl Chitosan ◽

Vapor Permeability ◽

Zone Method ◽

Oil Resistance

Active films based on carboxymethyl chitosan incorporated corn peptide were developed, and the effect of the concentration of corn peptide on films was evaluated. Physicochemical properties of the films, including thickness, opacity, moisture content, color, mechanical properties, water vapor permeability, and oil resistance, were measured. Biological activities of the films, including the antioxidant and antibacterial activities, were characterized in terms of 2, 2-diphenyl-1-picrylhydrazyl free radical scavenging activity, reducing power, the total antioxidant activity, and the filter disc inhibition zone method. The results indicated that the incorporation of corn peptide caused interactions between carboxymethyl chitosan and corn peptide in Maillard reaction and gave rise to the films light yellow appearance. Compared with the Control, the degree of glycosylation, browning intensity, thickness, opacity, tensile strength, antioxidant activity, and antibacterial activity of films were increased, but the elongation, vapor permeability, and oil resistance of films were decreased. The films based on corn peptide and carboxymethyl chitosan can potentially be applied to food packaging.

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Bacterial cellulose films with ZnO nanoparticles and propolis extracts: Synergistic antimicrobial effect

Scientific Reports ◽

10.1038/s41598-019-54118-w ◽

2019 ◽

Vol 9 (1) ◽

Cited By ~ 10

Author(s):

Alexandra Mocanu ◽

Gabriela Isopencu ◽

Cristina Busuioc ◽

Oana-Maria Popa ◽

Paul Dietrich ◽

...

Keyword(s):

Synergistic Effect ◽

Bacterial Cellulose ◽

Food Packaging ◽

Antimicrobial Effect ◽

Gas Chromatography Mass Spectrometry ◽

Trolox Equivalent Antioxidant Capacity ◽

Zno Nps ◽

X Ray ◽

Cellulose Films ◽

Trolox Equivalent

AbstractThis study aimed to obtain possible materials for future antimicrobial food packaging applications based on biodegradable bacterial cellulose (BC). BC is a fermentation product obtained by Gluconacetobacter xylinum using food or agricultural wastes as substrate. In this work we investigated the synergistic effect of zinc oxide nanoparticles (ZnO NPs) and propolis extracts deposited on BC. ZnO NPs were generated in the presence of ultrasounds directly on the surface of BC films. The BC-ZnO composites were further impregnated with ethanolic propolis extracts (EEP) with different concentrations.The composition of raw propolis and EEP were previously determined by gas-chromatography mass-spectrometry (GC-MS), while the antioxidant activity was evaluated by TEAC (Trolox equivalent antioxidant capacity). The analysis methods performed on BC-ZnO composites such as scanning electron microscopy (SEM), thermo-gravimetrically analysis (TGA), and energy-dispersive X-ray spectroscopy (EDX) proved that ZnO NPs were formed and embedded in the whole structure of BC films. The BC-ZnO-propolis films were characterized by SEM and X-ray photon spectroscopy (XPS) in order to investigate the surface modifications. The antimicrobial synergistic effect of the BC-ZnO-propolis films were evaluated against Escherichia coli, Bacillus subtilis, and Candida albicans. The experimental results revealed that BC-ZnO had no influence on Gram-negative and eukaryotic cells.

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ANTIMICROBIAL AND POWDER CHARACTERIZATION OF HERBAL DENTIFRICES

INDIAN DRUGS ◽

10.53879/id.50.11.p0039 ◽

2013 ◽

Vol 50 (11) ◽

pp. 39-47

Author(s):

V. K Sharma ◽

◽

B. Mazumder ◽

P. P. Sharma

Keyword(s):

Oral Cavity ◽

Physicochemical Properties ◽

Antimicrobial Effect ◽

Physicochemical Characteristics ◽

Water Soluble ◽

Particle Rearrangement ◽

Bulk Volume ◽

The Impact ◽

Tapped Density

The consumption of edible products strongly recommends the regular hygiene of oral cavity. Various dental products of allopathic and herbal origin are used as dentifrices. The dentifrices are considered safe and effective in terms of cleansing effect of oral cavity and antimicrobial effect against microbes causing bad smell and diseases such as gingivitis, pyorrhea etc. These characteristics of preparations are basically related to physicochemical properties of ingredients present in their composition and some how on directions of their use. In the present study, the marketed allopathic dentifrices coded as Brand I and II and herbal tooth powders coded as Brand III and IV were selected to analyze the impact of physicochemical properties of incorporated ingredients on their cleansing efficiency. The physicochemical characteristics studied were pH, bulk volume, tapped volume, tapped density, bulk density, true density, porosity, flowability, compressibility, compactability, cohesiveness, dispersability, Carr’s index, Hausner’s ratio, water soluble content, alcohol soluble content, foaming index, particle rearrangement behaviour and particle rearrangement constant. The antimicrobial effect of these powders was studied against Staphylococcus sorbinus, Staphylococcus salivarius and Lactobacillus acidophilus. It was observed that some of the physicochemical properties of all powders were different from each other. Marked antimicrobial effect of tooth powders was observed against pathogens. In all preparations, remarkable foaming index was analyzed that was generally considered responsible for cleansing effect.

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In VitroEvaluation of the Antimicrobial Efficacy of Four Endodontic Biomaterials againstEnterococcus faecalis,Candida albicans, andStaphylococcus aureus

International Journal of Biomaterials ◽

10.1155/2014/383756 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6 ◽

Cited By ~ 13

Author(s):

Duddi Narendra Nirupama ◽

Mohan Thomas Nainan ◽

Rajendran Ramaswamy ◽

Sethumadhavan Muralidharan ◽

Hulimangala Hosakote Lingareddy Usha ◽

...

Keyword(s):

Antimicrobial Activity ◽

Direct Contact ◽

Microbial Growth ◽

Antimicrobial Property ◽

Recurrent Infection ◽

Antimicrobial Effect ◽

Ah Plus ◽

Endodontic Sealers ◽

Root Canal Sealers ◽

Direct Contact Test

Root canal sealers that possess good antimicrobial property can prevent residual and recurrent infection and contribute to successful endodontic therapy. This study evaluated the antimicrobial activity of four endodontic sealers, AH Plus, Tubliseal EWT, EndoRez, and iRoot SP, against three different microorganisms,E. faecalis, C. albicans, andS. aureus, by direct contact test. 10 μL microbial suspensions were allowed to directly contact the four endodontic sealers for 1 hr at 37°C. Subsequently microbial growth was measured spectrophotometrically every 30 min for 18 hours. The microbial suspensions were simultaneously tested to determine the antimicrobial effect of components which are capable of diffusing into the medium. The results revealed that AH Plus and iRootSP had significantly higher antimicrobial activity againstE. faecalis. AH Plus and Tubliseal EWT showed significantly higher antimicrobial activity againstC. albicansandS. aureuscompared to iRoot SP and EndoRez. EndoRez showed the least antimicrobial activity against all the three microorganisms. Inhibition of microbial growth is related to the direct contact of microorganisms with the sealers. In conclusion AH Plus had significantly higher antimicrobial activity againstE. faecalis, C. albicans, andS. aureus.

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Enhancing or Inhibitory Effect of Fruit or Vegetable Bioactive Compound on Aspergillus niger and A. oryzae

Journal of Fungi ◽

10.3390/jof8010012 ◽

2021 ◽

Vol 8 (1) ◽

pp. 12

Author(s):

Gülru Bulkan ◽

Sitaresmi Sitaresmi ◽

Gerarda Tania Yudhanti ◽

Ria Millati ◽

Rachma Wikandari ◽

...

Keyword(s):

Ascorbic Acid ◽

Aspergillus Niger ◽

Bioactive Compounds ◽

Ellagic Acid ◽

Microbial Growth ◽

Biomass Yield ◽

Antimicrobial Effect ◽

Bioactive Compound ◽

Inhibitory Effect ◽

Processing Wastes

Fruit and vegetable processing wastes are global challenges but also suitable sources with a variety of nutrients for different fermentative products using bacteria, yeast or fungi. The interaction of microorganisms with bioactive compounds in fruit waste can have inhibitory or enhancing effect on microbial growth. In this study, the antimicrobial effect of 10 bioactive compounds, including octanol, ellagic acid, (−)-epicatechin, quercetin, betanin, ascorbic acid, limonene, hexanal, car-3-ene, and myrcene in the range of 0–240 mg/L on filamentous fungi Aspergillus oryzae and Aspergillus niger were investigated. These fungi were both found to be resistant to all compounds except octanol, which can be used as a natural antifungal agent, specifically against A. oryzae and A. niger contamination. On the contrary, polyphenols (quercetin and ellagic acid), ascorbic acid, and hexanal enhanced A. niger biomass yield 28%, 7.8%, 16%, and 6%, respectively. Furthermore, 240 mg/L car-3-ene was found to increase A. oryzae biomass yield 8%, while a 9% decrease was observed at lower concentration, 24 mg/L. Similarly, up to 17% decrease of biomass yield was observed from betanin and myrcene. The resistant nature of the fungi against FPW bioactive compounds shows the potential of these fungi for further application in waste valorization.

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Synthesis of biodegradable films obtained from rice husk and sugarcane bagasse to be used as food packaging material

Environmental Engineering Research ◽

10.4491/eer.2019.191 ◽

2019 ◽

Vol 25 (4) ◽

pp. 506-514 ◽

Cited By ~ 3

Author(s):

Himanshu Gupta ◽

Harish Kumar ◽

Mohit Kumar ◽

Avneesh Kumar Gehlaut ◽

Ankur Gaur ◽

...

Keyword(s):

Tensile Strength ◽

Sugarcane Bagasse ◽

Rice Husk ◽

Food Packaging ◽

Packaging Material ◽

Biodegradable Films ◽

Biodegradable Film ◽

Biocomposite Film ◽

Biopolymer Film ◽

Lignocellulose Biomass

The current study stresses on the reuse of waste lignocellulose biomass (rice husk and sugarcane bagasse) for the synthesis of carboxymethyl cellulose (CMC) and further conversion of this CMC into a biodegradable film. Addition of commercial starch was done to form biodegradable film due to its capacity to form a continuous matrix. Plasticizers such as Glycerol and citric acid were used to provide flexibility and strength to the film. Biopolymer film obtained from sugarcane bagasse CMC showed maximum tensile strength and elongation in comparison to the film synthesized from commercial CMC and CMC obtained from rice husk. It has been observed that an increase in sodium glycolate/NaCl content in CMC imposed an adverse effect on tensile strength. Opacity, moisture content, and solubility of the film increased with a rise in the degree of substitution of CMC. Therefore, CMC obtained from sugarcane bagasse was better candidate in preparing biopolymer/biocomposite film.

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Polysaccharide-based blend films as a promising material for food packaging applications: physicochemical properties

Iranian Polymer Journal ◽

10.1007/s13726-021-01014-8 ◽

2022 ◽

Author(s):

Vishram D. Hiremani ◽

Tilak Gasti ◽

Saraswati P. Masti ◽

Ravindra B. Malabadi ◽

Ravindra B. Chougale

Keyword(s):

Physicochemical Properties ◽

Food Packaging ◽

Promising Material ◽

Blend Films

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Examination of ultraviolet germicidal radiation for inactivating microorganisms in melted snow and ice samples

10.5194/egusphere-egu21-3949 ◽

2021 ◽

Author(s):

Fumio Nakazawa ◽

Kumiko Goto-Azuma

Keyword(s):

Size Distribution ◽

Water Samples ◽

Microbial Growth ◽

Particle Concentration ◽

Ice Cores ◽

Antimicrobial Effect ◽

Uv Treatment ◽

Melted Snow ◽

Size Distribution Of Particles

<p>The storage of melted snow and/or ice samples from snow pits and ice cores in a refrigerator for long durations may be limited by an increase in particle concentration caused by microbial growth after approximately 1&#8211;2 weeks. In this study, we examined an ultraviolet (UV) disinfection method for the storage of melted snow and/or ice samples. Surface snow obtained from Glacier No. 31 in the Suntar-Khayata Range, eastern Siberia, Russia was divided into two portions for UV treatment and untreated controls. Particle concentrations in the samples were measured using a Coulter counter (Multisizer 4e; Beckman Coulter, USA). Whereas the particle concentration in untreated samples increased, no obvious increase was observed over 53 days in the samples subjected to UV treatment. In addition, the original particle concentrations were unaffected by UV treatment. These findings indicate that the antimicrobial effect of UV radiation is effective for long-term sample storage of melted water samples. A detailed analysis of the particle size distribution for untreated samples indicated that particles of 0.7&#8211;1.2 &#181;m appeared within the first 7&#8211;14 days. Measurements using a viable particle counter (XL-10BT2 and XL-28A1; RION Co. Ltd., Japan) confirmed that these were biological particles, suggesting that microbial growth occurs during this period. Subsequently, the particles shifted to a smaller size and a higher concentration, suggesting that the decomposition of microorganisms occurred in the water samples. Therefore, the size distribution of particles in untreated samples reflected the growth and decomposition of microorganisms over time.</p>

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Co-combustion Characteristics and Kinetics Behavior of Torrefied Sugarcane Bagasse and Lignite

International Journal of Renewable Energy Development ◽

10.14710/ijred.2021.37249 ◽

2021 ◽

Vol 10 (4) ◽

pp. 737-746

Author(s):

Ukrit Samaksaman ◽

Kanit Manatura

Keyword(s):

Thermogravimetric Analysis ◽

Physicochemical Properties ◽

Burning Rate ◽

Sugarcane Bagasse ◽

Combustion Characteristics ◽

Firing Process ◽

Combustion System ◽

Heating Value ◽

Kinetics Of ◽

Derivative Thermogravimetry

The co-combustion characteristics and kinetics of torrefied sugarcane bagasse (TB), lignite (L), and their blended samples were experimentally investigated using thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG)based on the Coats-Redfern method for kinetic estimation.Their physicochemical properties were also investigated.Raw bagasse was thermally treated in a laboratory-scale torrefactor at 275 °C with a torrefaction time of 60 min under an inert nitrogen environment.Then, the torrefied bagasse was blended with Thai lignite as a co-fuel at ratios of 50:50 (TB50L50), 70;30(TB70L30), and 90:10 (TB90L10), respectively. Torrefaction improved the fuel properties and heating value of the raw bagasse as well as reducing the O/C and H/C ratios.In addition, the blending of torrefied bagasse with lignite improved the combustion behavior.The TGA and DTG results indicated that the ignition and burnout temperatures stepped downwards with different increasing ratios of torrefied bagasse.The co-combustion behavior at the maximum burning rate showed that the burnout temperatures of TB50L50, TB70L30, and TB90L10 were 532, 529, and 528 °C, respectively, indicating a slight decrease with an increasing torrefied bagasse blending ratio.These results were sufficient to provide comprehensive guidelines in terms of the design and operation of the combustion system for adding torrefied bagasse into the co-firing process.

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