Foodstuff Industry Research Articles

A novel biomimetic electrochemical taste-biosensor based on conformational changes of the taste receptor

Taste sensor, a useful tool which could detect and identify thousands of different chemical substances in liquid environments, has attracted continuous concern from beverage and foodstuff industry and its consumers. Although many taste sensing methods have been extensively developed, the assessment of tastant content remains challenging due to the limitations of sensor selectivity and sensitivity. Here we present a novel biomimetic electrochemical taste-biosensor based on bioactive sensing elements and immune amplification with nanomaterials carrier to address above concerns, while taking sweet taste perception as a model. The proposed biosensor based on ligand binding domain (T1R2 VFT) of human sweet taste receptor protein showed human mimicking character and initiated the application of immune recognition in gustation biosensor, which can precisely and sensitively distinguish sweet substances against other related gustation substances with detection limit of 5.1 pM, far less than that of taste sensors without immune amplification whose detection limit was 0.48 nM. The performance test demonstrated the biosensor has the capacity of monitoring the response of sweet substances in real food environments, which is crucial in practical. This biomimetic electrochemical taste-biosensor can work as a new screening platform for newly developed tastants and disclose sweet perception mechanism.

Evaluation of Antibacterial Mechanism of Action, Tyrosinase Inhibition, and Photocatalytic Degradation Potential of Sericin-Based Gold Nanoparticles.

In recent times, numerous natural materials have been used for the fabrication of gold nanoparticles (AuNPs). Natural resources used for the synthesis of AuNPs are more environment friendly than chemical resources. Sericin is a silk protein that is discarded during the degumming process for obtaining silk. The current research used sericin silk protein waste materials as the reducing agent for the manufacture of gold nanoparticles (SGNPs) by a one-pot green synthesis method. Further, the antibacterial effect and antibacterial mechanism of action, tyrosinase inhibition, and photocatalytic degradation potential of these SGNPs were evaluated. The SGNPs displayed positive antibacterial activity (8.45-9.58 mm zone of inhibition at 50 μg/disc) against all six tested foodborne pathogenic bacteria, namely, Enterococcus feacium DB01, Staphylococcus aureus ATCC 13565, Listeria monocytogenes ATCC 33090, Escherichia coli O157:H7 ATCC 23514, Aeromonas hydrophila ATCC 7966, and Pseudomonas aeruginosa ATCC 27583. The SGNPs also exhibited promising tyrosinase inhibition potential, with 32.83% inhibition at 100 μg/mL concentration as compared to 52.4% by Kojic acid, taken as a reference standard compound. The SGNPs also displayed significant photocatalytic degradation effects, with 44.87% methylene blue dye degradation after 5 h of incubation. Moreover, the antibacterial mode of action of the SGNPs was also investigated against E. coli and E. feacium, and the results show that due to the small size of the nanomaterials, they could have adhered to the surface of the bacterial pathogens, and could have released more ions and dispersed in the bacterial cell wall surrounding environment, thereby disrupting the cell membrane and ROS production, and subsequently penetrating the bacterial cells, resulting in lysis or damage to the cell by the process of structural damage to the membrane, oxidative stress, and damage to the DNA and bacterial proteins. The overall outcome of the current investigation concludes the positive effects of the obtained SGNPs and their prospective applications as a natural antibacterial agent in cosmetics, environmental, and foodstuff industries, and for the management of environmental contagion.

Experimental Investigations of the Removal of Methylene Blue from Waste Water using Agricultural Adsorbant

Abstract: The colored organic or inorganic chemical compounds which can impart colour to other substance are the Dyes which did significant applications in the most industrial sectors like the textile industry, leather industry, paper industry, plastic, foodstuff industry etc, to impart color to their products. Due to the large volume of dye use in these businesses, a significant quantity of wastewater containing colored organics is generated. Because of insufficient dye-fiber fixation, during the dyeing process, half of the dye is lost in the wastewater. Peanut and rice husk are used to absorb MB from water. Initial Methylene Blue concentration, Peanut and Rice Husk dose, and pH were monitored and compared to current adsorbents to identify the optimal removal conditions. The equilibrium amount of MB adsorbed at time t (min) for rice husk and peanut hull are obtained as 5.1 and 5.19 mg/g respectively. As part of the research, an intra-particle diffusion model was implemented to regulate the mass transfer model's rate-controlling step mechanism. Keywords: Waste Water, Methylene Blue, Peanut Hull, Rice Husk, Adsorption.

Experimental Investigations of the Removal of Methylene Blue from Waste Water using Agricultural Adsorbant

Abstract: The colored organic or inorganic chemical compounds which can impart colour to other substance are the Dyes which did significant applications in the most industrial sectors like the textile industry, leather industry, paper industry, plastic, foodstuff industry etc, to impart color to their products. Due to the large volume of dye use in these businesses, a significant quantity of wastewater containing colored organics is generated. Because of insufficient dye-fiber fixation, during the dyeing process, half of the dye is lost in the wastewater. Peanut and rice husk are used to absorb MB from water. Initial Methylene Blue concentration, Peanut and Rice Husk dose, and pH were monitored and compared to current adsorbents to identify the optimal removal conditions. The equilibrium amount of MB adsorbed at time t (min) for rice husk and peanut hull are obtained as 5.1 and 5.19 mg/g respectively. As part of the research, an intra-particle diffusion model was implemented to regulate the mass transfer model's rate-controlling step mechanism.

EFFECTS OF NICKEL TOXICITY ON VARIOUS ORGANS OF THE Swiss albino MICE

Nickel was discovered by A. F. Cronstedt in 1754 and is a bountiful metal in the Earth's outside layer, it is the 24th most plentiful element and 28th component of the periodic table. It is a silver-white metal found in a few oxidation states (going from - 1 to +4); nonetheless, the +2 oxidation state [Ni (II)] is the most widely recognized one in natural systems. Nickel is famous as a haematotoxic, immunotoxic, neurotoxic, genotoxic, regenerative harmful, aspiratory poisonous, nephrotoxic, hepatotoxic, and cancer-causing operator. The mass number of nickel (Ni) is 58.71 and the atomic number of Nickel is 28 just as the thickness is 8.9g/cm3 and the softening point is 1453°C and the edge of boiling over is 2732°C. Nickel (Ni) is silver-white pliable metal. In the living cells of plants, animals, and humans, minor components have a significant influence on synthetic, organic, biochemical, metabolic, catabolic, and enzymatic actions. Nickel (Ni), an occurring element, is found in a variety of environments, including soil, water, and air. Many industrial and commercial applications for Ni compounds and metallic Ni exist, including alloy manufacture, luster, nickel-cadmium batteries, and catalytic agent in the chemical and foodstuff industries. Acute and intense toxicity in mammals resulting from assimilation by consumption through lungs or gastro-intestinal tract was mainly reported. Nickel carbonyl ingestion produces two types of acute venomous effects. Nickel produces the variation of the (p53 gene), which is a transcription factor and crucial tumor suppressor gene, in epithelial cells of the kidney. The removal of sewage and industrial is a significant issue. It is oftentimes drained to agricultural regions, where it is used to develop yields like vegetables. Heavy metal pollution in wastewater water systems represents various dangers to the climate. . Most vegetables have contained a large number of organic compounds that are role-playing in cell reinforcement. The significant cell reinforcements in vegetables are phenolic acids, flavonoids, α-tocopherol, β-carotene, lutein, and ascorbic destructive. Although in different nourishments like grains, nuts and a few types of meat, chicken meat and fish.

Changes in the Innovation- and Marketing-Habits of Family SMEs in the Foodstuffs Industry, Caused by the Coronavirus Pandemic in Hungary

The economic specialties caused by the global coronavirus pandemic completely changed everyday life regarding certain sectors. For the small and medium enterprises, processing during the pandemic held several significant challenges, such as: cost-efficient operations, hardship of keeping employees, efficient management of innovation and various corporate activities, keeping the customers, etc. Many enterprises saw severe damages indirectly from the coronavirus pandemic, as society itself had its habits significantly changed, thereby necessitating changes in strategy for small and medium enterprises, most notably for local service providers and producers that have no delivery service. In order to solve the issue at hand, several governments tried applying a variety of solutions—mostly by financing the enterprises in question. The goal of the authors is to understand the current operation of innovation initiatives that small and medium enterprises have post-COVID-19, and to obtain a clear view on changes in marketing habits. Furthermore, the analysis concentrates on the following: the state of family SMEs dealing in foodstuffs, and how to create a future view for such members of the sector by identifying best practices. Using data collected during 2020 and 2021, and employing descriptive statistics and a conjoint analysis, the authors wished to see how the coronavirus pandemic affected SMEs, detect the changes in their marketing and innovation policy due to the pandemic, and help them create core business strategy via consumer feedback. Authors found that SMEs had to innovate by 2021 beyond their 2019 expectations, and that customers had partially validated their endeavors through their answers.

Natural or synthetic? Classification of common preservatives in food and drug industry by artificial intelligence

Os antioxidantes monoaromáticos são uma das principais classes de pequenas moléculas farmacológicas cujo uso como conservantes é difundido na indústria farmacêutica e alimentícia. A diferenciação desses compostos de acordo com sua origem é notavelmente difícil devido às suas características estruturais compartilhadas. Este trabalho mostra como promover a classificação de antioxidantes monoaromáticos naturais e sintéticos usando análise multivariada, mineração de dados e algoritmos de aprendizado de máquina. Descritores moleculares físico-químicos e biofarmacêuticos foram selecionados e calculados para renderizar modelos de alinhamento e classificação usando análise de componentes principais, mineração de dados, máquinas de suporte de vetores (kernel linear) e perceptron multicamadas. Mostramos que preditores moleculares físico-químicos e biofarmacêuticos podem ser atributos adequados para diferenciar antioxidantes monoaromáticos naturais e sintéticos, uma vez que seus resultados de análise multivariada, mineração de dados e algoritmos de aprendizado de máquina geraram um modelo confiável e preciso para classificação imediata de antioxidantes monoaromáticos naturais e sintéticos. Além disso, todos os modelos de classificação apresentaram acurácias acima de 80%. Este trabalho, portanto, lança luz sobre o uso da inteligência artificial no desenvolvimento de classificadores para aplicações farmacêuticas e alimentícias.

The Success of Managing Small Project in Light of Achieving the Dimensions of Managerial Leadership (Study Analysis of a Sample of Decision Makers’ Views in the General Company for Food Industries)

The aim of the research is to identify the role of administrative leadership in achieving the dimensions of the success of small projects’ management in the general company of foodstuff industries. The various variables have shown the importance of managerial leadership to achieve the dimensions of the success of the management of small projects, whether in international or local companies. The role of managerial leadership in the success of the management of small projects "In order to answer this question, has been developed a default model reflects the relationship and impact between management leadership and the success of the management of small projects. The research was based on descriptive analytical approach. The sample of the study consists of (48) Managers of departments and divisions where the research reached a number of results; the most important one is the existence of a relationship between the leadership of innovation and the success of the management of small projects in the company investigated if the relationship is positive and strong. The results led to a set of recommendations, the most important one is the necessity for the company under study to get benefit from the evaluation of the company’s leaders from time to time in order to achieve the dimensions of the success of managing small projects.

Respon Pertumbuhan Bibit Kakao (Theobroma cacao L.) Terhadap Pemberian Kompos Limbah Kelapa Sawit

Cacao (Theobroma cacao L.) is one of the important plantation commodities after oil palm and rubber. This plant has a high economic value and is a foreign exchange earner. The seeds produced are used as raw material for the foodstuff industry as well as for the pharmaceutical and cosmetic industries. Based on data from the Central Statistics Agency, the productivity of cocoa-farmers in Jambi is still very low, only reaching 585 kg ha-1. This study aims to obtain a dose of oil palm waste compost to support the growth of cocoa seedlings. The experiment was carried out in Pijon Village, Jaluko District, Muaro Jambi Regency from December 2020 to April 2021. This experiment was carried out using a completely randomized design environment. The treatment design used was compost dosage consisting of 4 levels, namely p0 = without giving compost, p1 = 5 tons ha-1 (7.5 grams per 3 kg of media), p2 = 10 tons ha-1 (15 grams per 3 kg of media) and p3 = 15 tons ha-1 (22.5 grams per 3 kg of media). The observed data were tabulated and analyzed with analysis of variance. If the calculated F value has a significant effect, then the DNMRT further test for 95% accuracy is carried out. The results showed that the application of compost 15 tons ha-1 showed an increase the plant height of 63.78%, the stem diameter of 73.68%, the shoot dry weight 30.83%, the total dry weight 95.12%, an the short root ratio 90.37%.

Arrowroot and Cassava Mixed Starch Products Identification by Raman Analysis with Chemometrics

Food frauds present a major problem in the foodstuff industry. Arrowroot and cassava may be targeted in adulteration and falsification processes. Raman analysis combined with chemometric techniques was proposed to identify the mixing and adulteration of these foodstuffs in commercial products. 67 cassava and 5 arrowroot samples were prepared in laboratory. 21 cassava and 5 arrowroot commercial samples were purchased in local stores. Raman assays were performed in the range of 400 to 2300 cm−1. Principal component analysis with K-means clustering was used to identify the adulteration of these products. It was possible to observe the separation of three different groups in the data, these groups labelled group 1, 2 and 3 were correspondent to cassava-like samples, mixed samples, and arrowroot-like samples, respectively. Despite the visual analysis related to sensory characteristics and the visual analysis of each Raman spectrum of cassava and arrowroot not being able to differentiate these foodstuffs, the chemometric approaches with the Raman specters data were able to identify which samples were pure arrowroot, pure cassava and which were mixed products. The proposed approach showed to be an effective tool in the investigation of fraud for arrowroot and cassava.

Spectral, Dosimetric, and Metrological Characteristics of Radiochromic Radiation-Sensitive Compositions

Questions of ensuring radiation safety during irradiation of equipment in the medical, agricultural, and foodstuffs industry are discussed. Means for measuring absorbed dose of ionizing radiation are examined. It is shown that the currently existing means of measuring absorbed dose in the Russian Federation are inadequate. The spectral, dosimetric, and metrological characteristics of radiation-sensitive compositions are studied for the purpose of developing new means of measurement of absorbed dose based on them. The feasibility of new film dosimetric systems based on these means of measurement is demonstrated, along with an expanded range of absorbed doses, including low doses of 300–1000 Gy.

Early detection of Pseudomonas aeruginosa and Escherichia coli. using zinc tetraphenylporphyrin

Abstract The sensory characteristics of food are considerably effected by the metabolic processes of various micro-organisms in the food stored in the field or at ambient temperature. Also, this microbial contamination can pose serious health hazards to public health. Chemical analysis of the complex mixture of volatiles produced during bacterial growth and investigation methods of these microorganisms presents a big challenge. There remains major unmet need to shorten and improve detection methods. Therefore, early detection of the microorganisms will open many frontiers for quality control in the foodstuffs industry. Accordingly, the aim of this study was to assess the feasibility and performance of chemoreceptive sensors for the rapid detection of bacterial pathogens, specifically Pseudomonas aeruginosa and Escherichia coli. In Uv/vis study, zinc tetraphenyl porphyrin solutions (in DMF) was tested with various volatile compounds, such as propanal, hexanal and heptanal which are commonly found to be released during the growth of bacteria. These sensors were used to detect the bacterial odours of two pathogenic species (E.coli and P.aeruginosa) during their growth cycle at 4 °C and ambient temperature. Hypochromic shifts in Uv/vis and hydrogen bonding in FT-IR studies confirmed the interaction between the volatiles and porphyrin. The porphyrin used detected the presence of microorganisms after 12 hrs incubation and showed more sensitivity for volatiles released during aerobic activity P. aeruginosa as compared to E. coli at 4 °C and ambient temperature. Zinc tetraphenyl porphyrin based chemoreceptive membranes has been proved successful for the detection of P. aeruginosa. Hence, the present study proves wide scope of improvement over current laboratory techniques for the detection of pathogens in terms of speed, ease of use, and cost. Key messages The developed technique allows rapid detection of spoiled food. Chemoreceptive property of porphyrin has been exploited for the early detection of bacteria.

Enrichment of Polyunsaturated fatty acids from catfish oil with immobilized Rhizopus oryzea lipase

Nowadays, Pangasius hypophthalmus fillet is one of the main marine products in Vietnamese Mekong River Delta with over three hundred thousand tons per year. One of the byproducts of this industry is fat, about one hundred thousand tons per year. That byproduct has been only used in animal foodstuff industry after oil extracting or it becomes waste. In order to increase the quality of Pangasius hypophthalmus oil, we have enriched PUFA in the oil by hydrolysis with immobilized Rhizopus oryzea lipase. Lipase has been immobilized on celite by absorption method. Immobilization experiments have been designed in a two-level full factorial model with three factors. The fish oil has been hydrolyzed with immobilized lipase to enrich PUFA with optimized parameters found out: the ratio
 of enzyme to support of 1:10 g/g, the ratio of phosphate buffer volume to support weight of 30.55 ml/g, incubation time of 5.15 hours. The result has showed that 60-minute hydrolysis is the most appropriate. Additionally, the oil iodine value has increased from 71.4 to 97.4, and DHA concentration has risen from 1156mg/kg to 1916mg/kg.

Sectoral Price and Quantity Indexes of Argentine Foreign Trade

Argentina does not have a sufficiently complete and developed system of sectoral statistical data on foreign trade. This paper tries to make a contribution showing a methodology to calculate foreign trade indexes, based on unit values obtained from Foreign Trade Consultation System of INDEC. This methodology is applied to the quarterly data of Argentine sectoral imports and exports and its accuracy is shown from the comparison with price indexes published by INDEC (aggregate level) and Brazilian statistical institute (sectoral level). Our indexes show a correlation above 80% and variability close to the benchmark in almost all sectors. Finally, we analyzed the contribution of each sector to foreign trade growth during 1996-2016 using the estimated quantity indexes, something impossible to obtain without the estimated price indexes. Both real exports and imports show a weak growth pace of 2.3% and 2.4% per year, respectively. The leading sectors are Foodstuff industry and Agricultural products in exports, and Motor vehicles and Chemical products in imports for the whole period

A novel natural sunlight active photocatalyst of CdS/SWCNT/CeO2 heterostructure: In depth mechanistic insights for the catalyst reactivity and dye mineralization

A conventional type II heterostructure based on CdS/SWCNT/CeO2 was successfully prepared via a modified co-precipitation and hydrothermal method. The as-prepared heterostructure was characterized via UV–Vis, Fluorescence, XRD, XPS and TEM. The morphology of the heterostructure showed spherical nanoparticles with a particle size of 5.1 nm for CdS/CeO2 on the SWCNT. These properties were translated into remarkable enhancement in the photodegradation of Rhodamine 6G (R6G) dye as a model pollutant for textile and food stuff industries under natural solar radiation. The photo-experiments showed an enhanced photocatalytic activity of CdS/CeO2 and CdS/SWCNT/CeO2 to be 79.3% and 86.4% respectively which are two-fold much greater than that of bare CeO2 NPs (36.6%). Also, the calculated photonic efficiencies (ζ) were found to be 11.7%, 39% and 54.5% for CeO2, CdS/CeO2 and CdS/SWCNT/CeO2 nanostructures respectively. Total organic carbon (TOC) was used to further estimate the mineralization capability of the heterostructure (94% TOC Removal). Furthermore, the band alignment of CdS/SWCNT/CeO2 heterostructure was determined via Mot-Schottky plots and Valence and Core-Level X-ray Photoelectron Spectroscopy, which provided a deep insight about the photodegradation efficiency. For in-depth understanding what happens during the photodegradation, the detection of reactive oxidative species (ROS) was investigated by the trapping experiments.

Accident rates in Poland’s foodstuff industry from the perspective of occupational safety management in the European Union

The issue of accidents at work and accident prevention have a significant impact regarding safety, health protection and work environment management for the European Union. Work conditions need to be improved in Poland. Solving this collective issue caused by humanitarian as well as economic considerations is a primary mission in businesses. Creating more quality jobs is one of the main goals of the EU’s social policy. Health and safety in the work environment are essential conditions for work quality. This article presents the incidence of work-related accidents in the EU. In the 28 member states of the EU (EU-28), 2015 recorded over 3.2 million workplace accidents which invoked at least 4-day work leaves and 3,876 deaths. The authors of this analysis present the issue of workplace accidents based on the examination of incidents in large foodstuff plants of the Lodz voivodship i.e. food processing businesses that have been continuously active for the five year period of 2008-2012. The food industry belongs to one of the most fundamental economic fields and is one of the most important factors of economic growth and amounts to about 20% of domestic production in the processing industry in Poland. The Lodz province has been chosen on account of its central location in the country. For the selected group of businesses, there is a marked increase of workplace accidents – from 258 in 2008, to 333 incidents in 2012 – for the study period in that the lowest incidence occurred in 2009 (211 accidents), and the highest in 2011 (358 accidents).

Green Consumer Behavior in the Cosmetics Market

Consumers and producers are becoming more open to the usage of natural cosmetics. This can be seen in them using a variety of natural cosmetic resources and materials. This fact is further supported by the trend of environmental and health awareness. These phenomena can be found within both the producers’ and the consumers’ behavior. Our research supports that green or natural products’ role in the cosmetics industry is getting more and more pronounced. The role of science is to determine the variables suggesting the consumer to change to natural cosmetics. The primary aim of our research is to find out to what extent the characteristics of the consumption of organic foods and natural cosmetics differ. We would like to know what factors influence consumer groups when buying green products. The novelty of the analyses is mainly that consumers were ordered into clusters, based on consuming bio-foodstuffs and preferring natural cosmetics. The cluster analysis has multiple variables, namely: Consumer behavior in light of bio-product, new natural cosmetics brand, or health- and environmental awareness preferences. The data was collected using online questionnaire, exclusively in Hungary during April–May of 2018. 197 participants answered our questions. The results of descriptive statistics and the cluster analysis show that there are consumers who prefer natural cosmetics, whereas some of them buy traditional ones. A third group use both natural and ordinary cosmetics. The results suggest that on the market of cosmetic products, health and environmental awareness will be a significant trend for both producer and consumer behavior, even in the future. However, it will not necessarily follow the trends of the foodstuffs industry, as the health effect spectrum of cosmetics is far shorter. In the future, the palette of natural cosmetics will become much wider. The main reason for this will be the appearance of green cosmetics materials and environmentally friendly production methods (mostly for packaging). The consumers will also have the possibility to choose the ones that suit them the most.

Industrial Development Strategy and Stimulator Industry of Iran’s Economy

With a glance on planning methodology, we try to analyze “Iran’s industrial development strategy proposition”. This proposition to somehow covers the requirements of Iran’s economic development strategy, and in this regard can be treated as an economic strategy plan and not industrial strategy plan. Approaches of this proposition-ignoring its long-run quantitative forecasts- can be used as a general solution to Iran’s long-run structural problems and can be summarized by international linkages and competitiveness as the main proposed strategies. But this proposition does not introduce stimulator engine sector of the economy; in this paper, we try to touch this nomination via an input-output sectoral linkages framework. We conclude that, to start of Iran’s economic fast growth, sectors of glass and glassware, cement, mine, other mineral & non-ferrous products, basic steel and iron mill products, paper & wood industries, chemical & plastic industries, copper & copper products, water and electricity in turn should be activated more to fulfill the needs for intermediate products in the economy. The sectors of foodstuff industries, aluminum, and other basic products of non-ferrous metals, copper and copper products, steel and iron mill products are able to increase the demand for intermediate products of other sectors more than the others. Basic steel and steel mill products, copper and copper products, aluminum and other basic non-ferrous metals products, cement, paper, and wood industries, glass and glassware, other mineral non-ferrous products, chemical industries, and plastic are more integrated than the others relating both forward and backward linkages. Machinery and equipment, basic products of steel and iron mill, chemical industries and plastic are mainly based on import and share of intermediate import to production of aluminum sectors and other basic products of non-ferrous metals, chemical industries, and plastic, basic steel and iron mill products, machinery and equipment industries is more than the other sectors. Aluminum and other basic products of non-ferrous metals, foodstuffs industries, basic products of steel and steel mill have a higher multiplier effect in increasing economy income, in other words, it is possible to consider them as pioneer sectors and economy stimulator engine. Aluminum and other basic products of non-ferrous metals, foodstuff industries, basic products of steel and iron mill have more affect the growth of other sectors. Sectors of chemical and plastic industries, agriculture, transportation services, warehouse keeping and communications, commercial services provide the highest amount of input for other sectors. We consider two scenarios for Iran’s industrial strategy as foodstuffs industries sector with export promotion, and the second, metals sectors (aluminum and other basic products of non-ferrous metals, basic products of steel and iron mill) with export promotion and import substitution.

Enhancement of electrochemical sensor for the determination of glucose based on mesoporous VO2/PVA nanocomposites

Glucose detection is extremely necessary in several zones like foodstuff industries, analytical field, clinical diagnostics and biotechnology. In particular, diabetes mellitus which is a common chronic disease that threatens to the human health. To avoid this trouble, glucose recognition is significant. In this work, a novel vanadium dioxide (VO2) was developed by means of basic thermal decomposition method and the nanocomposites such as VO2/2%PVA, VO2/4%PVA and VO2/6%PVA were also synthesized by using PVA (Poly vinylalcohol (wt% = 2, 4 & 6)) as a capping agent. The constructed nanocomposites were exploited for non-enzymatic glucose detection in 0.1 M of NaOH medium and showed better electro-catalytic activity than, PVA, VO2, VO2/2%PVA and VO2/4%PVA modified electrodes. The built glucose biosensor of vanadium dioxide-PVA nanocomposites possess high selectivity, stability, sensitivity (614.35 µA mM−1 cm−2), lowest detection limit (1.45 µM), low cost and minimal effort for the quick identification of glucose.

Ion Chromatographic Fingerprinting of STC-1 Cellular Response for Taste Sensing.

Taste sensing is of great importance in both the pharmaceutical and foodstuff industries, and is currently mainly based on human sensory evaluation. Many approaches based on chemical sensors have been proposed, leading to the development of various electronic tongue systems. However, this approach is limited by the applied recognition methods, which do not consider natural receptors. Biorecognition elements such as taste receptor proteins or whole cells can be involved in the development of taste sensing biosensors usually equipped with various electrochemical transducers. Here, we propose a new approach: intestinal secretin tumor cell line (STC-1) chemosensory cells were applied for taste recognition, and their taste-specific cellular response was decoded from ion chromatographic fingerprints with the use of multivariate data processing by partial least squares discriminant analysis (PLS-DA). This approach could be useful for the development of various non-invasive taste sensing assays, as well as for studying taste transduction mechanisms in vitro.