Beslenme ve Diyetetik Bölümü Makale Koleksiyonu

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https://hdl.handle.net/20.500.12418/426

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Impact of lactic acid bacteria strains against Listeria monocytogenes biofilms on various food‑contact surfaces
(Springer, 2024)
Listeria monocytogenes is one of the most important foodborne pathogens, causing listeriosis, a disease characterized by high mortality rates. This microorganism, commonly found in food production environments and transmitted to humans by consuming contaminated food, has the ability to form biofilms by attaching to a wide variety of surfaces. Traditional hygiene and sanitation procedures are not effective enough to completely remove L. monocytogenes biofilms from food-contact surfaces, which makes them a persistent threat to food safety. Alternative approaches to combating Listeria biofilms are needed, and the use of lactic acid bacteria (LAB) and their antimicrobial compounds shows promise. The present study investigated the effect of Lactobacillus strains, previously isolated from various foods and known to possess antimicrobial properties, on the biofilm formation of L. monocytogenes on three different food-contact surfaces. To study L. monocytogenes IVb ATCC 19115 type, culture was preferred to represent serotype IVb, which is responsible for the vast majority of listeriosis cases. The results demonstrated that cell-free supernatants (CFSs) of LAB strains inhibited biofilm formation by up to 51.57% on polystyrene, 60.96% on stainless steel, and 30.99% on glass surfaces. Moreover, these CFSs were effective in eradicating mature biofilms, with reductions of up to 78.86% on polystyrene, 73.12% on stainless steel, and 72.63% on glass surfaces. The strong inhibition rates of one strain of L. curvatus (P3X) and two strains of L. sakei (8.P1, 28.P2) used in the present study imply that they may provide an alternate technique for managing Listeria biofilms in food production environments.
Electrochemical DNA Sensor Designed Using the Pencil Graphite Electrode to Detect Listeria monocytogenes
(Springer, 07.2024) Küçükoğlu, Nurçin; Kıvanç, Merih; Şahin, Yücel
In the present work, a novel electrochemical DNA sensor was designed to detect L. monocytogenes. Two different gene fragments were selected for the sensor design. One is a 702 bp long fragment of the hlyA gene, encoding the synthesis of listeriolysin O toxin, which is unique only to pathogenic strains of L. monocytogenes and is essential for pathogenicity. The other is a 209 bp long fragment of the 16 S RNA gene found in all species of the Listeria genus. As the working electrode, the pencil graphite electrode was modified in various ways (activated or covered with polypyrrole), and six different combinations were constituted using three types of the modified working electrode and two different gene fragments. The developed system is based on differential pulse voltammetric transduction of guanine oxidation after hybridization between the selected gene fragment (38 µg/mL) and the selected fragment-specific inosine-modified probe (1.8 µmol/L) immobilized on a pencil graphite electrode surface. The comparison of all combinations demonstrates that the best results are obtained with the combination formed from a polypyrrole-coated pencil graphite electrode (prepared at 2 scans) and 702 bp fragment of the hlyA gene. The analysis time is less than 1 hour, and the necessary DNA concentrations for the analysis have been determined as 8.2 × 10−11 M DNA and 2.7 × 10−10 M DNA respectively, for the hlyA gene and 16 S RNA gene.
Detection of Listeria Species by Conventional Culture-Dependent and Alternative Rapid Detection Methods in Retail Ready-to-Eat Foods in Turkey
(KOREAN SOC MICROBIOLOGY & BIOTECHNOLOGYKOREA SCI TECHNOL CENTER, 02,2024)
Foodborne pathogens, like Listeria monocytogenes, continue to inflict substantial financial losses on the food industry. Various methods for detecting Listeria in food have been developed, and numerous studies have been conducted to compare the different methods. But, in recent years, new Listeria species have been identified, and currently the genus comprises 26 species. Therefore, it would be a more accurate approach to re-evaluate existing detection methods by considering new species. The present investigation involved the analysis of 42 ready-to-eat (RTE) foods, encompassing a variety of food categories, such as mezes, salads, dairy products, and meat products, with the aim of ascertaining the presence of Listeria. Among the traditional culture-dependent reference methods, the ISO 11290 method was preferred. The process of strain identification was conducted with the API Identification System. Furthermore, to ascertain the existence of L. monocytogenes and Listeria spp., the samples underwent additional analysis employing the VIDAS Immunoassay System, ELISA, and RT-PCR methodologies. Thus, four alternative approaches were employed in this study to compare not only the different methods used to determine Listeria while taking into account the newly identified Listeria species but also to assess the compliance of retail RTE food items with microbiological criteria pertaining to the genus Listeria. Based on the conducted analyses, L. monocytogenes was conclusively determined to be present in one sample. The presence of Listeria spp. was detected in 30.9% of the samples, specifically in Turkish cig kofte, sliced salami, and salads.
Synthesis of Bis-Nicotinonitrile Derivatives and Investigations of Antimicrobial and Antibiofilm Activities
(02.10.2023) Tutar, Uğur; Gezegen, Hayreddin
In this study aimed to the synthesis of novel bis-nicotinonitrile derivatives starting from 1,3-bis-chalcones and investigate their antimicrobial activity potentials. Bis-nicotinonitrile derivatives were synthesized from 1,3-bis-chalcone derivatives reacted with malononitrile in ethanol in the presence of potassium carbonate. Characterization of the obtained compounds was carried out by spectroscopic methods. In total, 12 new 1,3- phenylene-bis-nicotinonitrile derivatives were synthesized. Finally, the antimicrobial and antibiofilm activities of synthesized 1,3-phenylene-bis-nicotinonitrile derivatives were tested against 5 microorganisms. As a result, it was observed that the synthesized new nicotinonitrile derivatives were quite active especially in terms of antibiofilm activity.
Synthesis and Caracterizations of New Thiosemicarbazone and Thiazole Derivatives From Polycyclic Chiral 1,5- Diketones
(08.11.2023) Gezegen, Hayreddin
Thiosemicarbazone derivatives have a wide spectrum of biological activity as well as various application areas such as forming complexes with metals, using as intermediates in the synthesis of heterocyclic bioactive compounds. Thiazole derivatives can be easily synthesized from thiosemicarbazones and are among the important compounds in demand in terms of biological activity. In this study, 14 new thiosemicarbazone derivatives were synthesized starting from polycyclic 1,5- diketone derivatives with five stereocenters, and 14 thiazole derivatives were synthesized from the reaction of the obtained thiosemicarbazones with 2-bromoacetophenone and their structure determinations were carried out using spectroscopic methods (1H-NMR, 13C-NMR, 2D-NMR, FT-IR and Q-TOF LC/MS). This synthesis route from polycyclic chiral 1,5-diketones may contribute to the design of new drug-like molecules, which are important in medicinal chemistry.
Serum visfatin levels are positively correlated with dietary carbohydrate and polyunsaturated fatty acid intakes in type 2 diabetes mellitus patients
(Elsevier, 2023) Konyalıgil Öztürk, Nurefşan; Çiçek, Betül; Tekin, Tuba; Güntürk, İnayet; Yazıcı, Cevat; Karaca, Züleyha; Sönmez, Meltem
Aims To investigate the relationship between dietary intake and biochemical parameters and anthropometric measurements and serum visfatin concentrations. Study design A case-control study. Methods The study was carried out in 30 type 2 diabetes mellitus (T2DM) and 30 sex, age and body mass index (BMI) matches healthy control subjects. Biochemical parameters (glycemic and lipid profile, insulin resistance), anthropometric measurements (weight and bioimpedance) and dietary intake evaluation were obtained. Visfatin was assayed with ELISA method. Results The mean BMI of the case group was 31.36 ± 4.37 kg/m2 and 29.80 ± 3.53 kg/m2 in the control group (p = 0.134). The results revealed a significant increase in the weight, waist circumference, waist/hip ratio, visceral fat ratio, fasting glucose level, HbA1c and fasting insulin as well as in insulin resistance (HOMA-IR) among T2DM patients when compared with controls (p < 0.05). Serum visfatin levels were higher in the subjects with T2DM than healthy control subjects (p < 0.05). There was no significant correlation between visfatin levels and biochemical parameters and anthropometric measurements in patients with T2DM. Serum visfatin level was positively correlated with carbohydrate (CHO) and polyunsaturated fatty acid (PUFA) in T2DM patients (r = 0.406, p = 0.026; r = 0.404, p = 0.027, respectively). Conclusion T2DM patients compares with healthy control group increased serum visfatin levels. PUFA and CHO intake was found to be positively associated with visfatin levels.
Turkish validity and reliability of the lifestyle questionnaire related to cancer
(Associação Médica Brasileira, 2023) Öner, Neslihan; Borlu, Arda; Akşehirli Seyfeli, Mevlüde Yasemin; Tekin, Tuba
OBJECTIVE: The aim of this study was to adapt the lifestyle questionnaire related to cancer in Turkish and investigate its validity and reliability. METHODS: This methodological study was conducted on 1,196 participants. Cronbach's α was used to assess validity and reliability. The internal consistency was evaluated using item-total correlation. RESULTS: The normed chi-square in this study was 5.87. The root mean square error of approximation was calculated as 0.051. The comparative fit index and the Tucker-Lewis Index were 0.83 and 0.81, respectively. The split-half method was used to test the reliability of the scale (Part 1 Cronbach's α: 0.826, Part 2 Cronbach's α: 0.812, and Adjusted Cronbach's α: 0.881). CONCLUSION: The Turkish version of lifestyle questionnaire related to cancer (8 subscales, 41 items) is a reliable and valid measure to evaluate lifestyle behaviors related to cancer in adults.
Fermentation of Commercial Resistant Starch Products by Lactic Acid Bacteria Isolated from Various Foods
(Instituto de Tecnologia do Paraná-Tecpar, 2023) Tekin, Tuba; Dinçer, Emine
This study was aimed to evaluate the capacity of lactic acid bacteria to use commercial resistant starch types as prebiotics. In addition, the prebiotic capacities of resistant starch types were compared. Among the commercially resistant starch types, type 2 (Hi-Maize 260), type 3 (Novelose 330), and type 4 (Demirpolat) resistant starches were used. Lactic acid bacteria have been isolated from kefir, pastırma, cucurbita and beetroots pickled. Four different lactic acid bacteria were purchased as type cultures. It was revealed that Hi-maize 260, Novelose 330 and Demirpolat commercial resistant starch products were fermented by all lactic acid bacteria in the study. At the end of the study, the highest bacterial density was determined in L. sakei (8.P1.8) utilizing Novelose 330, in L. plantarum (K2-1) using Hi-maize 260 and in L. sakei (5.P1.5) using Demirpolat at the 48th hour. In general, it was found that the L. sakei bacterial group used all resistant starch products at the best level at the 48th hour. Commercial-resistant starch products are used as carbon sources by lactic acid bacteria. Therefore, these resistant starch products can be accepted as a prebiotic component and contribute to the development of new functional foods in the food industry.
A Comprehensive Review Resistant Starch?Containing Bread as a Functional Food: Its Effect on Appetite, Glycaemic Index, and Glycaemic Response
(Wiley, 2023) Tekin, Tuba; Fisunoğlu, Mehmet
Resistant starch (RS) passes through the small intestine undigested and is fermented in the large intestine. Due to this feature, RS functions as a prebiotic and, RS is added to various foods as a functional fiber. RS for traditional fiber has various advantages, such as increased viscosity, gel form, and volume increase. In terms of these advantages, RS, which is commercially produced, is used in the food industry for bread, breakfast cereals, cooked products, and pasta products. Bread is a food that is frequently consumed in human nutrition. Although bread is a frequent food, the fiber content of the bread is low and the glycemic index (GI) of the bread is high. For this reason, bread-RS is used to convert the bread into a healthier version. Adding RS to bread increases the bread's fiber content and decreases the GI of the bread. RS reduces not only the GI of foods but also the glycemic response of individuals after consumption. RS, which can be fermented in the colon, is converted into short-chain fatty acids (SCFAs) because of fermentation. RS affects glucose and insulin levels through the production of SCFA, which increases glucose uptake in the muscles and liver, releases intestinal hormones, and increases insulin sensitivity. The addition of RS to bread results in a product with a high fiber content and a low GI.
Effect of resistant starch types as a prebiotic
(Springer Verlag, 2023) Tekin, Tuba; Dinçer, Emine
Since the role of intestinal microbiota in metabolism was understood, the importance of dietary components such as fbres and prebiotics, which afect the modulation of microbiota, has been increasing day by day. While all prebiotic components are considered dietary fbre, not every dietary fbre is considered a prebiotic. While fructooligosaccharides, galactooligosaccharides, inulin, and galactans are considered prebiotics, other fermentable carbohydrates are considered candidate prebiotic components based on in vitro and preclinical studies. Resistant starch, one of such carbohydrates, is considered a potential prebiotic component when it is made resistant to digestion naturally or chemically. In this review, both in vitro and in vivo studies in which the prebiotic capacity of type II, type III, and type IV resistant starch isolated from food and produced commercially was assessed were analyzed. According to the results of current studies, certain types of resistant starch are thought to have a high prebiotic capacity, and they may be candidate prebiotic components although positive results have not been achieved in all studies.
POROUS POLYMER SCAFFOLDS DERIVED FROM BIORESOURCES FOR BIOMEDICAL APPLICATIONS
(Editura Academiei Romane, 2023) Bohórquez-Moreno, Cristian Daniel; Öksüz, Kerim Emre; Dinçer, Emine
The development of sustainable materials in medical treatment for the controlled release of drugs has generated interest in the field in view of the environmental and energy challenges faced during the continuous production of materials in the sector. In the present study, the potential use of sponges based on combinations of three types of starch (corn, wheat, and rice starch) with poly(vinyl alcohol) was investigated to evaluate their morphological properties, swelling ratio, in vitro biodegradation, antibacterial activity, hemolysis, and blood clotting index. The synthesis process is based on a cost-effective method for wide application in the medical industry, yielding sponges with a high swelling index of up to 8 times the original volume. A slight antibacterial activity was also observed when rice and corn starch were used. In addition, different morphological and physical properties were observed depending on the type of starch added to the formulation, allowing a variety of responses to treatment requirements, depending on factors such as the duration of treatment and the patient’s blood characteristics in terms of clot formation or immune response.
Sensorial and Nutritional Properties of a Collagen-Fortified Snack Bar Designed for the Elderly
(MDPI, 17.08.2023) Hastaoğlu,Fatma; HASTAOĞLU EMRE; Bağlam, Nurcan; Taş, İrem Nur
Background: This study aimed to develop a highly consumable collagen-containing bar that contributes to enriching the diets of elderly individuals, in terms of energy and nutrients. Method: For this purpose, five different bar samples (C, P1, P2, D1, D2) containing different amounts of collagen, date puree, and pumpkin puree were developed and subsequently evaluated in terms of their sensory and nutritional properties by a panel of 30 adult trained sensorial analysists. Results: The bars with the highest flavor score were those with high levels of collagen and pumpkin puree (P2) and date puree (D2). For the analyses of multiple criteria among multiple samples, the TOPSIS technique showed that among the snack bar samples with different contents, the most liked sample was the one with a high level of collagen and date puree (D2). One serving of the developed bars contains approximately 300–400 kcal of energy and 6.8–8.8 g of protein. Considering age-related decreased appetite, as well as chewing and swallowing problems in elderly individuals, regular consumption of nutrient-rich small meals or snacks with enhanced sensory characteristics could contribute to improving nutritional and functional status.
Plant-inspired adhesive and injectable natural hydrogels: in vitro and in vivo studies
(SPRINGER, 2023) Dinçer, Emine; Öksüz, Kerim Emre; Bohórquez-Moreno, Cristian Daniel
The development of alternative therapeutic treatments based on the use of medicinal and aromatic plants, such as Juniper communis L., has aroused interest in the medical feld to fnd new alternatives to conventional therapeutic treatments, which have shown problems related to bacterial resistance, high costs, or sustainability in their production. The present work describes the use of hydrogels based on sodium alginate and carboxymethyl cellulose, with combinations of juniperus leaves and berry extracts, in order to characterize their chemical characteristics, antibacterial activity, tissue adhesion test, cytotoxicity in the L929 cell line, and their efects on an in vivo model in mice to maximize the use of these materials in the healthcare feld. Overall, an adequate antibacterial potential against S. aureus, E. coli and P. vulgaris was obtained with doses above 100 mg.mL−1 of hydrogels. Likewise, low cytotoxicity in hydrogels combined with extracts has been identifed according to the IC50 value at 17.32 µg.mL−1, compared to the higher cytotoxic activity expressed by the use of control hydrogels with a value at 11.05 µg.mL−1. Moreover, in general, the observed adhesion was high to diferent tissues, showing its adequate capacity to be used in diferent tissue typologies. Furthermore, the invivo results have not shown erythema, edema, or other complications related to the use of the proposed hydrogels. These results suggest the feasibility of using these hydrogels in biomedical applications given the observed safety.
The investigation of host genetic variants of toll-like receptor 7 and 8 in COVID-19
(2023) Binnur BAĞCI
Toll-like receptors (TLRs) recognize infectious agents and play an important role in the innate immune system. Studies have suggested that TLR single nucleotide polymorphisms (SNPs) are associated with poor antiviral responses against SARS-CoV-2. Therefore, we aimed to investigate the relationship of TLR7 and TLR8 (SNPs) with COVID-19 disease prognosis. A total of 120 COVID-19 patients, 40 outpatients, 40 clinical ward patients and 40 intensive care unit (ICU) patients were included in the study. TLR7 (rs179009), TLR8-129 C/G (rs3764879) and TLR8 Met1Val (rs3764880) SNPs were genotyped using the PCR-RFLP method. In female patients, individuals carrying AG genotype and G allele for TLR8 Met1Val SNP were found at a higher frequency in patients hospitalized in the ICU than in patients followed in the clinical ward (p < 0.05). In terms of the other two SNPs, no significant difference was found between the groups in females. Furthermore, in male patients, A allele of TLR7 rs179009 SNP was at a higher frequency in patients who have at least one comorbidity than in patients who have no comorbidity (p < 0.05). Our results suggest that TLR8 Met1Val SNP is important in the COVID-19 disease severity in females. Furthermore, TLR7 rs179009 SNP is important in male patients in the presence of comorbid diseases.
Investigating the effect of ribavirin treatment on genetic mutations in Crimean–Congo haemorrhagic fever virus (CCHFV) through next?generation sequencing
(2023) Bağcı, Binnur
Crimean-Congo haemorrhagic fever (CCHF) is the most widespread tick-borne viral haemorrhagic fever affecting humans, and yet a licensed drug against the virus (CCHFV) is still not available. While several studies have suggested the efficacy of ribavirin against CCHFV, current literature remains inconclusive. In this study, we have utilised next-generation sequencing to investigate the mutagenic effect of ribavirin on the CCHFV genome during clinical disease. Samples collected from CCHF patients receiving ribavirin treatment or supportive care only at Sivas Cumhuriyet University Hospital, Turkey, were analysed. By comparing the frequency of mutations in each group, we found little evidence of an overall mutagenic effect. This suggests that ribavirin, administered at the acute stages of CCHFV infection (at the World Health Organization-recommended dose) is unable to induce lethal mutagenesis that would cause an extinction event in the CCHFV population and reduce viremia.
Systems-level temporal immune-metabolic profile in Crimean-Congo hemorrhagic fever virus infection
(National Academy of Sciences (NAS), 2023) Bağcı, Binnur
Crimean-Congo hemorrhagic fever (CCHF) caused by CCHF virus (CCHFV) is one of the epidemic-prone diseases prioritized by the World Health Organisation as public health emergency with an urgent need for accelerated research. The trajectory of host response against CCHFV is multifarious and remains unknown. Here, we reported the temporal spectrum of pathogenesis following the CCHFV infection using genome-wide blood transcriptomics analysis followed by advanced systems biology analysis, temporal immune-pathogenic alterations, and context-specific progressive and postinfection genome-scale metabolic models (GSMM) on samples collected during the acute (T0), early convalescent (T1), and convalescent-phase (T2). The interplay between the retinoic acid-inducible gene-I-like/nucleotide-binding oligomerization domain-like receptor and tumor necrosis factor signaling governed the trajectory of antiviral immune responses. The rearrangement of intracellular metabolic fluxes toward the amino acid metabolism and metabolic shift toward oxidative phosphorylation and fatty acid oxidation during acute CCHFV infection determine the pathogenicity. The upregulation of the tricarboxylic acid cycle during CCHFV infection, compared to the noninfected healthy control and between the severity groups, indicated an increased energy demand and cellular stress. The upregulation of glycolysis and pyruvate metabolism potentiated energy generation through alternative pathways associated with the severity of the infection. The downregulation of metabolic processes at the convalescent phase identified by blood cell transcriptomics and single-cell type proteomics of five immune cells (CD4+ and CD8+ T cells, CD14+ monocytes, B cells, and NK cells) potentially leads to metabolic rewiring through the recovery due to hyperactivity during the acute phase leading to post-viral fatigue syndrome.
Recycling of Labada (Rumex) biowaste as a value-added biosorbent for rhodamine B (Rd-B) wastewater treatment: biosorption study with experimental design optimisation
(Springer Berlin Heidelberg, 2023/2) Şenol, Zeynep Mine; Arslanoğlu, Hasan
Rhodamine B (Rd-B) is a highly toxic dye causing serious environmental and health issues. This study focussed on the development of a cost-effective and ecologically friendly remediation technique utilising Labada (Rumex), a readily available agricultural biowaste. Experimental design was applied for the first time to establish the parametric effects on the rhodamine B (Rd-B) biosorption and to optimise the process for the highest rhodamine B (Rd-B) removal. At the optimised conditions of 25 °C, 500 mg L−1 concentration, natural solution pH of 5.5–6.0, and 1 g L−1 dosage; the maximum biosorption capacity was 0.219 mol kg−1. Using the results of physicochemical characterisation and rhodamine B (Rd-B) adsorption measurements, isotherm and kinetic models were made to predict performance towards rhodamine B (Rd-B) removal from water reliably. The rhodamine B (Rd-B) biosorption kinetic was best correlated to the pseudo-second-order, while the equilibrium to the Freundlich isotherm. These isotherm and kinetic models can be used to quickly screen among larger sets of possible adsorbents and guide the development of novel, highly efficient adsorbents for rhodamine B (Rd-B) removal from water. Characterisation of Labada (Rumex) was accomplished by scanning electron microscope (SEM–EDX), energy dispersive X-ray, Fourier transform infrared, and thermogravimetric analyses. Regeneration of exhausted Labada (Rumex) biosorbent was best performed using 50% hydrochloric acid. This study highlights the strong feasibility of Labada (Rumex) biosorption as a green and effective technique for Rd-B removal.
Synthesis and characterization of a new hybrid polymer composite (pollene@ polyacrylamide) and its applicability in uranyl ions adsorption
(Springer International Publishing, 2023/2/14) Şenol, Zeynep Mine; Keskin, Zehra Seba; Şimşek, Selçuk
In this study, polyacrylamide-pollen (P@PAA) composite adsorbent was synthesized by in situ polymerization method using polyacrylamide hydrogel and pollen. The adsorptive properties of the P@PAA hybrid polymer composite adsorbent were investigated for the removal of UO22+ ions. The fndings obtained as a result of the structural characterizations showed that the P@PAA composite adsorbent has various functional group variations. The max adsorption capacity of UO22+ ions was 0.695 mol kg−1. The thermodynamic parameters of the adsorption of UO22+ ions onto P@PAA hybrid polymer composite were determined and it was clarifed that the adsorption was spontaneous.
Prunus mahaleb shell as a sustainable bioresource for carminic acid removal from aqueous solution: Experimental and theoretical studies
(Elsevier, 2023/3/5) Keskin, Zehra Seba; Şenol, Zeynep Mine; Kaya Savaş; Şimşek, Selçuk
This study focused on the performance of Prunus mahaleb shell (MS) agricultural waste, which is used as an alternative biosorbent for carminic acid (CA) removal from aqueous solution. The effects of different parameters such as pH, initial dye concentration, contact time, biosorbent dosage and temperature on the biosorption of CA dye to the MS biosorbent surface were investigated. The characterization of the biosorbent was done by FT-IR, SEM-EDX and pzc analyses. It was determined that the isotherm and kinetics of CA dye removal were consistent with the Langmuir isotherm and PSO and IPD kinetic models, respectively. The maximum adsorption capacity was calculated as 148 mg g−1 according to the Langmuir isotherm. According to the H0, G0 and S0 results, the biosorption was found to be endothermic and spontaneous. Based on these data, it is concluded that environmentally friendly, inexpensive, simple to use and effective MS biosorbent can be used for CA dye removal.
Removal of methylene blue dye from aqueous solution using pure talc and polyacrylamide–talc composite: Isotherms, kinetic and thermodynamic studies
(Springer Berlin Heidelberg, 2023/10) Bilgiç, Mehmet; Şimşek, Selçuk; Şenol, Zeynep Mine
In this study, the composite of talc (as a natural mineral) and polyacrylamide (an inert polymer) was synthesized and the adsorption properties of the new material were examined for methylene blue (MB) in an aquatic medium. Experimental variables such as temperature, pH, and concentrations were optimized in detail. Adsorbents performance of the talc and PAA-talc composite for MB dye molecules were optimized: 40 mg L−1 at pH: 5.2 at 25 °C. The monolayer adsorption capacities for talc and PAA-talc were found to be 0.0124 mol kg−1 and 0.0104 mol kg−1 from the Langmuir isotherm model, respectively. Although talc has good adsorption properties, talc has the undesirable property of dissolving in water. This negative feature was eliminated by forming a water-insoluble composite with adsorption properties with PAA-talc. The adsorption kinetics of talc and PAA-talc indicated that the adsorption process in both materials fit both the PSO kinetic model and the IPD model. The adsorption thermodynamic of talc and PAA-talc indicated that the dye adsorption was both spontaneous and endothermic. The results of this study, when evaluated as a whole, showed that the PAA-talc composite is a potential adsorbent for methylene blue adsorption, which is simple to use, low cost, and efficient.

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