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1.
Emerg Infect Dis ; 28(2): 429-431, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35076007

RESUMO

A March-June 2021 representative serosurvey among Sitakunda subdistrict (Chattogram, Bangladesh) residents found an adjusted prevalence of severe acute respiratory syndrome coronavirus 2 antibodies of 64.1% (95% credible interval 60.0%-68.1%). Before the Delta variant surge, most residents had been infected, although cumulative confirmed coronavirus disease incidence was low.

3.
Healthcare (Basel) ; 10(1)2022 Jan 02.
Artigo em Inglês | MEDLINE | ID: mdl-35052249

RESUMO

Machine Learning methods can play a key role in predicting the spread of respiratory infection with the help of predictive analytics. Machine Learning techniques help mine data to better estimate and predict the COVID-19 infection status. A Fine-tuned Ensemble Classification approach for predicting the death and cure rates of patients from infection using Machine Learning techniques has been proposed for different states of India. The proposed classification model is applied to the recent COVID-19 dataset for India, and a performance evaluation of various state-of-the-art classifiers to the proposed model is performed. The classifiers forecasted the patients' infection status in different regions to better plan resources and response care systems. The appropriate classification of the output class based on the extracted input features is essential to achieve accurate results of classifiers. The experimental outcome exhibits that the proposed Hybrid Model reached a maximum F1-score of 94% compared to Ensembles and other classifiers like Support Vector Machine, Decision Trees, and Gaussian Naïve Bayes on a dataset of 5004 instances through 10-fold cross-validation for predicting the right class. The feasibility of automated prediction for COVID-19 infection cure and death rates in the Indian states was demonstrated.

4.
Talanta ; 236: 122823, 2022 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-34635213

RESUMO

Plant hormones are the molecules that control the vigorous development of plants and help to cope with the stress conditions efficiently due to vital and mechanized physiochemical regulations. Biologists and analytical chemists, both endorsed the extreme problems to quantify plant hormones due to their low level existence in plants and the technological support is devastatingly required to established reliable and efficient detection methods of plant hormones. Surface Enhanced Raman Spectroscopy (SERS) technology is becoming vigorously favored and can be used to accurately and specifically identify biological and chemical molecules. Subsistence molecular properties with varying excitation wavelength require the pertinent substrate to detect SERS signals from plant hormones. Three typical mechanisms of Raman signal enhancement have been discovered, electromagnetic, chemical and Tip-enhanced Raman spectroscopy (TERS). Though, complex detection samples hinder in consistent and reproducible results of SERS-based technology. However, different algorithmic models applied on preprocessed data enhanced the prediction performances of Raman spectra by many folds and decreased the fluorescence value. By incorporating SERS measurements into the microfluidic platform, further highly repeatable SERS results can be obtained. This review paper tends to study the fundamental working principles, methods, applications of SERS systems and their execution in experiments of rapid determination of plant hormones as well as several ways of integrated SERS substrates. The challenges to develop an SERS-microfluidic framework with reproducible and accurate results for plant hormone detection are discussed comprehensively and highlighted the key areas for future investigation briefly.


Assuntos
Reguladores de Crescimento de Plantas , Análise Espectral Raman , Microfluídica
5.
Chemosphere ; 286(Pt 1): 131683, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34351278

RESUMO

Butachlor being an important member of chloroacetanilide herbicides, is frequently used in agriculture to control unwanted weeds. Exposure to butachlor can induce cancer, human lymphocyte aberration, and immunotoxic effects in animals. The current experimental trial was executed to determine the potential risks of herbicide butachlor to immunotoxicity and its mechanism of adverse effects on the spleen. For this purpose, mice were exposed to 8 mg/kg butachlor for 28 days, and the toxicity of butachlor on the spleen of mice was evaluated. We found that butachlor exposure led to an increase in serum ALB, GLU, TC, TG, and TP and changes in the morphological structure of the spleen of mice. More importantly, results showed that butachlor significantly increased the expression level of ATG-5, decreased the protein expression of LC3B and M-TOR, and significantly decreased the mRNA content of M-TOR and p62. Results revealed that the mRNA contents of APAF-1, CYTC, and CASP-9 related genes were significantly decreased after butachlor treatment. Subsequently, the mRNA levels of inflammatory cytokines (IL-1ß, TNF-α, IL-10) were reduced in the spleen of treated mice. This study suggested that butachlor induce spleen toxicity and activate the immune response of spleen tissue by targeting the CYTC/BCL2/M-TOR pathway and caspase cascading activation of spleen autophagy and apoptosis pathways which may ultimately lead to immune system disorders.


Assuntos
Herbicidas , Acetanilidas , Animais , Apoptose , Autofagia , Herbicidas/toxicidade , Camundongos , Baço
6.
Materials (Basel) ; 14(23)2021 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-34885610

RESUMO

The effect of combining filler (carbon black) and fibrous materials (steel fiber and polypropylene fiber) with various sizes of coarse particles on the post-cracking behavior of conductive concrete was investigated in this study. Steel fibers (SF) and carbon black (CB) were added as monophasic, diphasic, and triphasic materials in the concrete to enhance the conductive properties of reinforced concrete. Polypropylene fiber (PP) was also added to steel fiber and carbon to improve the post-cracking behavior of concrete beams. This research mainly focused on the effects of macro fibers on toughness parameters and energy absorption capacity, as well as enhancing the self-sensing of multiple cracks and post-cracking behavior. Fractional changes in resistance and crack opening displacement (COD-FCR) and the relationship of load-deflection-FCR with different coarse aggregates of (5-10 mm and 15-20 mm) sizes were investigated, and the law of resistance signal changes with single and multiple cracking through load-time-FCR curves was explored. Results indicated that the smaller size coarse aggregates (5-10 mm) showed higher compressive strength: up to 8.3% and 14.83% with diphasic (SF + CB), respectively. The flexural strength of PC-10 increased 22.60 and 51.2%, respectively, with and without fibers, compared to PC-20. The diphasic and triphasic conductive material with the smaller size of aggregates (5-10 mm) increased the FCR values up to 38.95% and 42.21%, respectively, as compared to those of greater size coarse aggregates (15-20 mm). The hybrid uses of fibrous and filler materials improved post-cracking behavior as well as the self-sensing ability of reinforced concrete.

7.
Foods ; 10(10)2021 Oct 15.
Artigo em Inglês | MEDLINE | ID: mdl-34681516

RESUMO

Snack foods are consumed around to globe due to their high nutrition, taste and versatility; however, the effects of various processing methods on quality, structure and oxidative properties are scare in the literature. This study aims to evaluate the effect of various processing methods (frying, baking and microwave cooking) on quality, structure, pasting, water distribution and protein oxidative properties of fish meat-based snacks. The results showed that the frying method induced a significantly (p < 0.05) higher expansion than baking and microwave methods. Texture in terms of hardness was attributed to the rapid loss of water from muscle fiber, which resulted in compact structure and the increased hardness in microwave cooking, whereas in frying, due to excessive expansion, the hardness decreased. The pasting properties were significantly higher in baking, indicating the sufficient swelling of starch granules, while low in microwave suggest the rapid heating, which degraded the starch molecules and disruption of hydrogen bonds as well as glycosidic linkage and weakening of granules integrity. The water movement assessed by Low Field Nuclear Magnetic Resonance (LF-NMR) showed that frying had less tight and immobilized water, whereas microwave and baking had high amounts of tight and immobilized water, attributing to the proper starch-protein interaction within matrix, which was also evidenced by scanning electron microscopy (SEM) analysis. The protein oxidation was significantly (p < 0.05) higher in frying compared to baking and microwave cooking. The findings suggest the endorsement of baking and microwave cooking for a quality, safe and healthy snacks.

8.
Artigo em Inglês | MEDLINE | ID: mdl-34669101

RESUMO

BACKGROUND: The conventional IMCI training for healthcare providers is delivered in 11 days, which can be expensive and disruptive to the normal clinical routines of the providers. An equally effective, shorter training course may address these challenges. METHODS: We conducted a quasi-experimental study in two provinces (Sindh and Punjab) of Pakistan. 104 healthcare providers were conveniently selected to receive either the abridged (7-day) or the standard (11-day) training. Knowledge and clinical skills of the participants were assessed before, immediately on conclusion of, and six months after the training. RESULTS: The improvement in mean knowledge scores of the 7-day and 11-day training groups was 31.6 (95% CI 24.3, 38.8) and 29.4 (95% CI 23.9, 34.9) respectively, p = 0.630 while the improvement in mean clinical skills scores of the 7-day and 11-day training groups was 23.8 (95% CI: 19.3, 28.2) and 23.0 (95% CI 18.9, 27.0) respectively, p = 0.784. The decline in mean knowledge scores six months after the training was - 12.4 (95% CI - 18.5, - 6.4) and - 6.4 (95% CI - 10.5, - 2.3) in the 7-day and 11-day groups respectively, p = 0.094. The decline in mean clinical skills scores six months after the training was - 6.3 (95% CI - 11.3, - 1.3) in the 7-day training group and - 9.1 (95% CI - 11.5, - 6.6) in the 11-day group, p = 0.308. CONCLUSION: An abridged IMNCI training is equally effective as the standard training. However, training for certain illnesses may be better delivered by the standard course.

10.
Crit Rev Eukaryot Gene Expr ; 31(5): 67-78, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34591392

RESUMO

The junk DNA "pseudogenes," known as genomic fossils, are characterized by their ubiquitousness and abundance within the genomic structure. These genomics sets are recognized by the potential activity of meta-regulating the parent genes; these are transcribed into interfering RNA, consequently acting on miRNA concentration, thereby shedding light on the crosstalk of the pseudogenes' miRNA, siRNA, lncRNA/tumor therapy co-relationship. Moreover, an upcoming visualization regarding pseudogenes is under investigation, which describes the potentiality of pseudogenes as a fundamental component of cancerous evolutionary processing tools. Accordingly, here is a systematic review covering pseudobirth, pseudosignatures, and functional properties of pseudogenes, concluding that these pseudogenes are hypothetically predictive tumor therapies.

11.
Saudi J Biol Sci ; 28(8): 4276-4290, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-34354410

RESUMO

Barley (Hordeum vulgare L.) is a major cereal grain and is known as a halophyte (a halophyte is a salt-tolerant plant that grows in soil or waters of high salinity). We therefore conducted a pot experiment to explore plant growth and biomass, photosynthetic pigments, gas exchange attributes, stomatal properties, oxidative stress and antioxidant response and their associated gene expression and absorption of ions in H. Vulgare. The soil used for this analysis was artificially spiked at different salinity concentrations (0, 50, 100 and 150 mM) and different levels of ascorbic acid (AsA) were supplied to plants (0, 30 and 60 mM) shortly after germination of the seed. The results of the present study showed that plant growth and biomass, photosynthetic pigments, gas exchange parameters, stomatal properties and ion uptake were significantly (p < 0.05) reduced by salinity stress, whereas oxidative stress was induced in plants by generating the concentration of reactive oxygen species (ROS) in plant cells/tissues compared to plants grown in the control treatment. Initially, the activity of antioxidant enzymes and relative gene expression increased to a saline level of 100 mM, and then decreased significantly (P < 0.05) by increasing the saline level (150 mM) in the soil compared to plants grown at 0 mM of salinity. We also elucidated that negative impact of salt stress in H. vulgare plants can overcome by the exogenous application of AsA, which not only increased morpho-physiological traits but decreased oxidative stress in the plants by increasing activities of enzymatic antioxidants. We have also explained the negative effect of salt stress on H. vulgare can decrease by exogenous application of AsA, which not only improved morpho-physiological characteristics, ions accumulation in the roots and shoots of the plants, but decreased oxidative stress in plants by increasing antioxidant compounds (enzymatic and non-enzymatic). Taken together, recognizing AsA's role in nutrient uptake introduces new possibilities for agricultural use of this compound and provides a valuable basis for improving plant tolerance and adaptability to potential salinity stress adjustment.

12.
Antioxidants (Basel) ; 10(8)2021 Jul 30.
Artigo em Inglês | MEDLINE | ID: mdl-34439478

RESUMO

Haloarchaea are extreme halophilic microorganisms belonging to the domain Archaea, phylum Euryarchaeota, and are producers of interesting antioxidant carotenoid compounds. In this study, four new strains of Haloarcula sp., isolated from saline lakes of the Atacama Desert, are reported and studied by high-resolution mass spectrometry (UHPLC-Q-Orbitrap-MS/MS) for the first time. In addition, determination of the carotenoid pigment profile from the new strains of Haloarcula sp., plus two strains of Halorubrum tebenquichense, and their antioxidant activity by means of several methods is reported. The effect of biomass on cellular viability in skin cell lines was also evaluated by MTT assay. The cholinesterase inhibition capacity of six haloarchaea (Haloarcula sp. ALT-23; Haloarcula sp. TeSe-41; Haloarcula sp. TeSe-51; Haloarcula sp. Te Se-89 and Halorubrum tebenquichense strains TeSe-85 and Te Se-86) is also reported for the first time. AChE inhibition IC50 was 2.96 ± 0.08 µg/mL and BuChE inhibition IC50 was 2.39 ± 0.09 µg/mL for the most active strain, Halorubrum tebenquichense Te Se-85, respectively, which is more active in BuCHe than that of the standard galantamine. Docking calculation showed that carotenoids can exert their inhibitory activity fitting into the enzyme pocket by their halves, in the presence of cholinesterase dimers.

13.
J Assoc Physicians India ; 69(1): 19-22, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34227770

RESUMO

Background: COVID-19 has taken a big toll on the world in terms of morbidity and mortality. The disease may progress in some of the patients leading to trigger of "cytokine storm" which is shown to be associated with adverse outcomes. Heat killed Mycobacterium w (Mw) is a known immunomodulator which is approved for the treatment of gram negative sepsis. This study was carried out to evaluate the role of Mw in the treatment of COVID-19 early in the course of the disease. Method: In this retrospective observational study, 117 (84 males, 33 females) COVID-19 patients admitted between July 3, 2020 and Aug 26, 2020 in the covid ward of Fortis Hiranandani hospital, Mumbai, were enrolled. Patients were tested COVID-19 positive on RTPCR and were treated with standard of care treatment along with Mw 0.3 ml intradermal injection per day for 3 consecutive days. Patients were evaluated for live discharge as well as changes in the levels of inflammatory markers. Results: Use of Mw was seen to be associated with rapid recovery in 116/117 patients from COVID-19 who were discharged from the hospital within 10 days. A decrease in the levels of CRP and IL6 was observed after the administration of Mw. This decrease was associated with improvement in the patients' condition. The use of Mw was seen to be associated with no systemic side effects. Conclusion: The patients of COVID-19 may deteriorate due to exaggerated production of cytokines which may result in adverse outcomes. Mw used earlier in the disease not only effectively prevents excessive cytokine production but also contribute to rapid recovery. Mw was also found to be safe in use. Larger randomized controlled trials are recommended to assess the role of Mw in COVID-19.


Assuntos
COVID-19 , Mycobacterium , Feminino , Hospitalização , Humanos , Masculino , Respiração Artificial , SARS-CoV-2 , Resultado do Tratamento
14.
Saudi J Biol Sci ; 28(7): 3751-3758, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34220228

RESUMO

Pitfall trapping is an efficient self-sampling method for capturing epigeal arthropods for ecological and faunistic studies. During the present study, conducted between March 2009 and March 2015, pitfall trapping was undertaken in five study sites of different habitats in Abu Dhabi Emirate. During the study period a total of 94 monitoring visits were made to collect data from the pitfall traps at five sites in Abu Dhabi. A total of 36,238 individuals of ground-dwelling arthropods of 121 different species belonging to 14 orders and 46 families were recorded from all the study sites using pitfall traps. The order Coleoptera (beetles) was recorded to be the most dominant order with 46 species followed by Hymenoptera (ants, bees & wasps) with 24 species. On average 37.5 ± 3 (mean ± SE) species were recorded every month from all the study sites and number of species did not vary significantly across the months (df = 11, F = 0.48, p = 0.91 one-way - ANOVA). The arthropod fauna was recorded to be highly diversified in different habitat types, but the number of individuals were not evenly distributed across the study sites (H) 1.10, (E) 0.53, Shannon Diversity Index). The highest diversity of arthropods was recorded from a site Wadi Tarabat, followed by Al Wathba Wetland Reserve (AWWR) and Abu Al Abyed. Our findings indicate that to study ground dwelling invertebrate species, pitfall trapping is an efficient method. Moreover, capture efficiency of pitfall traps can be affected by climatic factors and habitat types of Abu Dhabi Emirate. The ideal period to encounter the highest number of species is between March to April and September to November across all the habitat types.

15.
Clean Eng Technol ; 4: 100218, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34322678

RESUMO

On the eve of the outbreak of the COVID-19 pandemic, there is a tremendous increase in the production of facemasks across the world. The primary raw materials for the manufacturing of the facemasks are non-biodegradable synthetic polymers derived from petrochemicals. Disposal of these synthetic facemasks increases waste-load in the environment causing severe ecological issues for flora and fauna. The synthesis processes of the polymers from the petrochemical by-products were also not eco-friendly, which releases huge greenhouse and harmful gases. Therefore, many research organizations and entrepreneurs realize the need for biodegradable facemasks to render similar performance as the existing non-biodegradable masks. The conventional textile fabrics made of natural fibers like cotton, flax, hemp, etc., can also be used to prepare facemasks with multiple layers in use for general protection. Such natural textile masks can be made anti-microbial by applying various herbal anti-microbial extracts like turmeric, neem, basil, aloe vera, etc. As porosity is the exclusive feature of the masks for arresting tiny viruses, the filter of the masks should have a pore size in the nanometre scale, and that can be achieved in nanomembrane manufactured by electrospinning technology. This article reviews the various scopes of electrospinning technology for the preparation of nanomembrane biomasks. Besides protecting us from the virus, the biomasks can be useful for skin healing, skincare, auto-fragrance, and organized cooling which are also discussed in this review article.

16.
Sci Rep ; 11(1): 11772, 2021 Jun 03.
Artigo em Inglês | MEDLINE | ID: mdl-34083557

RESUMO

Extensive change in land use, climate, and over-exploitation of groundwater has increased pressure on aquifers, especially in the case of crystalline rocks throughout the world. To support sustainability in groundwater management require proper understating of groundwater dynamics and recharge potential. GIS based studies have gained immense popularity in groundwater exploration in recent years because they are fast and provide recent information on the resource for future growth. Thus, the present study utilized a GIS-based Weighted Overlay Index (WOI) model to identify the potential recharge zones and to gain deep knowledge of groundwater dynamics. The in situ infiltration tests have been carried out, which is the key process in groundwater recharge and is neglected in many cases for WOI. In the WOI, ten thematic layers from the parameters influencing and involved in the recharge process are considered to identify potential recharge zones. The results suggested a significant underestimation of recharge potential without considering site-specific infiltration rates that one needs to be considered. The present WOI model considered in situ infiltration information and classified the entire area into four recharge zones, good, moderate, poor, and very poor. The final integrated map compared with the real-time field data like water level fluctuation and infiltration to analyse occurrence and quantification of recharge. The estimated average groundwater draft is 21.9 mcm, while annual renewable recharge is only 5.7 mcm that causing a continuous fall of the groundwater table. The study is useful in selecting regions with more focussed recharge studies and suggested the need of reducing groundwater demand by changing cropping patterns through a predictive decision support tool.

17.
J Pak Med Assoc ; 71(5): 1432-1437, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-34091629

RESUMO

OBJECTIVE: To determine the reasons of neonatal referrals from secondary-care to tertiary-care setting, and to assess neonatal outcomes for the referred cases. METHODS: The retrospective study was conducted at the Aga Khan University Hospital, Karachi, and comprised data from July 2015 to June 2019 Related to all neonates born after 32 weeks of gestation at the satellite secondary-care centres in Kharadar, Garden and Karimabad who had been referred to the main tertiary care hospital. The reason for referral, need of mechanical ventilation, referral place and neonatal outcome were noted. Data was analysed using SPSS 22. RESULTS: Of the 348 cases, 211(60.6%) were boys. The overall mean gestational age was 36.42±2.61 weeks and the mean birth weight was 2.54±0.67 kg. The outcome was neonatal mortality in 42(12%) cases. Of the remaining 306(88%) cases, 284(92.81%) were discharged from the hospital and 22(7.18%) left against medical advice. Overall, mechanical ventilation was needed in 63(18.1%) patients. There was a significant association of mechanical ventilation with low Appearance, Pulse, Grimace, Activity, and Respiration score at 1 and 5 minutes (p<0.001), shorter duration of stay (p=0.007), and aggressive resuscitation requirement at birth (p<0.001). CONCLUSIONS: The most common reasons for referral of newborns to tertiary care hospital were respiratory diseases requiring respiratory support and surgical intervention.


Assuntos
Encaminhamento e Consulta , Atenção Secundária à Saúde , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Paquistão/epidemiologia , Estudos Retrospectivos , Centros de Atenção Terciária
18.
Interact J Med Res ; 10(2): e25606, 2021 May 12.
Artigo em Inglês | MEDLINE | ID: mdl-33978594

RESUMO

BACKGROUND: Sleep disorders constitute a major health problem because of their relatively high and rising prevalence. Several studies worldwide have analyzed health care providers' knowledge of sleep disorders. OBJECTIVE: In this study, we aimed to assess the knowledge of sleep disorders among physicians in Qatar. METHODS: A total of 250 physicians were surveyed regarding their knowledge of sleep medicine by using the validated 30-item Assessment of Sleep Knowledge in Medical Education (ASKME) Survey. The participants included residents, fellows, and consultants in medicine and allied subspecialties. A high score was defined as ≥60% of correctly answered questions, implying the respondent has adequate knowledge of sleep disorders. RESULTS: Responses were received from 158 of the 250 physicians, with a response rate of 63.2%. This included responses from 34 residents, 74 clinical fellows, and 50 consultants. The overall mean score was 15.53 (SD 4.42), with the highest possible score of 30. Only 57 of 158 (36.1%) respondents were able to answer ≥60% of the questions correctly. No statistically significant difference was found in the scores of participants with regard to their ranks (ie, residents, fellows, or consultants) or years of medical training. CONCLUSIONS: This study demonstrates that health care providers in Qatar have decreased awareness and knowledge about sleep medicine, which may reflect reduced emphasis on sleep disorders during medical school and training. Increasing awareness regarding sleep medicine among nonspecialist physicians will allow early detection and treatment of sleep disorders, thereby reducing the morbidity associated with these disorders.

19.
Saudi J Biol Sci ; 28(5): 2655-2666, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-34025150

RESUMO

Salinity is extremely hazardous to agriculture worldwide and its expanding constantly. Soil of almost 100 countries facing salinity problem including Pakistan. Cyperus laevigatus also act as salinity indicator species is a naturally adapted halophyte dispersed in subtropical regions of world. Six populations of C. laevigatus were collected from different saline habitats to evaluate adaptations regarding anatomical and physiological characteristics. C. laevigatus is perfectly adapted to harsh environmental conditions like dry barren soils, saline lakes, hyper-saline wetlands and salt marshes. Ecological success of this species is due to plasticity in physiological and anatomical characteristics to adapt variable environmental conditions. C. laevigatus is a halophyte, exhibited increased biomass production in moderately saline habitat. Higher uptake of K+ occurs to compensate the uptake of Na+ ion contents, a striking feature of salt-tolerant and halophytic species. Accumulation of osmoprotectants like proline, free amino acids, soluble sugar and protein contribute significantly to osmotic adjustment. Stem thickness enhanced as salinity level of habitat increased to store water in parenchymatous tissues under physiological drought. Intensive sclerification in root cortex provide mechanical strength to plant as well as prevent the radial leakage of water. Well-developed aerenchyma, increased vascular bundle area, broader vessels, small and dense stomata are critical to cope with environmental hazards. Population of Jahlar lake showing maximum biomass production indicate that this species grows better in moderate salinities. Therefore, this species will prove very useful for revegetation of salt affected rangeland and prairies by direct growth of such halophytic ecotypes.

20.
Heliyon ; 7(3): e06550, 2021 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-33851050

RESUMO

Nowadays, biodegradable antimicrobial packaging materials draw substantial attention and are considered one of the preferred emerging technologies to be used in the food industry. In this study, we have reported developing a two-component, chitosan (CS) and polyvinyl alcohol (PVA) based films loaded with natural extract of Ocimum tenuiflorum via solvent casting technique. Experimental results showed that all the components were well dispersed, resulting in complete homogenous films. FTIR-ATR spectral analysis indicated strong interaction between the film matrix components, which also gets reflected by the films' physical properties. Transparent biodegradable films have resulted from the mixture and incorporation of the natural agent/extracts influenced light barrier, water resistance, moisture content (9.89-9.01%), and DPPH radical scavenging properties (antioxidant value ~41.1%) of the CS/PVA films. Therefore, this natural extract containing transparent CS/PVA-based films promises to be used in the food industry as packaging material to enhance food safety.

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