An Overview of Applications of Electronic Nose and Electronic Tongue in Food and Dairy Industry

The dairy and food industries aims to achieve targeted productivity and very keen on product quality and consumer demand. Due to increasing technological advances, these food and dairy industries gained numerous technological support. Among the diverse development, the usages of e-nose and e-tongue paved the way to handle the production without any kind of deviation. In the food industries product perfection, uniform taste and aroma plays a supreme role because these parameters determine the marketing strategy. The electronic nose (e-nose) is a non-destructive intelligent electronic sensing instrument, which mimics the human olfactory system to detect, discriminate and classify odour samples. e-nose and e-tongue is an electronic tool used as a fast screening method to provide information about the product quality which is not easily done by manual methods as it is a time-consuming process. In this paper, the principle of e-nose and e-tongue and their applications in the dairy and food industries are explained.

Environmental Electronic Sensing Systems

Although environmental measurement instrumentation has been utilized by human civilizations for thousands of years, the use of electronics to conduct measurements closely parallels the development of electrical theory from the 19th century to the present. Environmental electronic sensing systems have been created to automate measurement tasks that are difficult for humans to repeat in a precise and synchronous fashion or to measure phenomena that cannot be manually observed at scales ranging from the microscopic to the planetary. The collection and recording of data at regular timesteps enable inputs to mathematical models that provide predictions and forecasts of environmental processes; moreover, these models can be used to better understand planetary systems. Data measurements conducted at different scales can be subjected to statistical or scaling analysis to provide gridded data sets for application of mathematical models. Point measurements made at a single geographic location provide calibration or validation for satellite remote sensing data products. Measurements made by different sensors can be utilized along with sensor fusion algorithms to calculate indexes or gridded data sets. The sources in this article have been selected to provide an overview of the sensors and associated sensing systems that measure components of the environment on or near the surface of the Earth. Each first-level heading demarcates different environmental components. The final section of the article provides a selection of references pertaining to the engineering of sensor networks that are used to obtain areal measurements of environmental processes. Each section contains a series of subsections that divide the literature according to the type of sensor or measurement. An emphasis is placed on the selection of references that provide insight into the measurement physics of the sensor and the environmental physics of the phenomena being measured. Moreover, references are selected that provide schematic diagrams and engineering design considerations suitable for replication and development of new sensors. Papers on sensor calibration and error analysis as well as case studies are included for operational use and field deployment applications. Due to the numerous papers that have been published on environmental sensing systems, it is not possible to cite all available literature pertaining to a certain type of sensor. To close gaps in the literature and to provide ideas for students, instrument developers, engineers, and environmental scientists, overview papers are also provided in this article. These overview papers often present ideas in a succinct fashion and the associated sensor mathematics, design, and signal processing are provided in a manner to enhance pedagogical value.

Sustainable approach toward synthesis of green functional carbonaceous 3-D micro/nanostructures from biomass

This study proposes a novel technique to synthesize functional carbonaceous three-dimensional (3-D) micro/ nanocompounds from agricultural by-products using femtosecond laser irradiation. Biowastes of rice husk and wheat straw are value-engineered to carbonaceous structures in a single-step process under ambient conditions. Our results demonstrate that by controlling the laser fluence, structures with a variety of different morphologies from nanostructures to microstructures can be achieved. Also, the results indicate that altering the laser processing parameters influences the chemical composition of the synthesized structures. This sustainable approach presents an important step towards synthesizing 3-D micro/nanofibrous compounds from biowaste materials. These structures, as-synthesized or as nanocomposite fillers, can have practical uses in electronic, sensing, biological, and environmental applications.

Sustainable approach toward synthesis of green functional carbonaceous 3-D micro/nanostructures from biomass

This study proposes a novel technique to synthesize functional carbonaceous three-dimensional (3-D) micro/ nanocompounds from agricultural by-products using femtosecond laser irradiation. Biowastes of rice husk and wheat straw are value-engineered to carbonaceous structures in a single-step process under ambient conditions. Our results demonstrate that by controlling the laser fluence, structures with a variety of different morphologies from nanostructures to microstructures can be achieved. Also, the results indicate that altering the laser processing parameters influences the chemical composition of the synthesized structures. This sustainable approach presents an important step towards synthesizing 3-D micro/nanofibrous compounds from biowaste materials. These structures, as-synthesized or as nanocomposite fillers, can have practical uses in electronic, sensing, biological, and environmental applications.

Sustainable approach toward synthesis of green functional carbonaceous 3-D micro/nanostructures from biomass

This study proposes a novel technique to synthesize functional carbonaceous three-dimensional (3-D) micro/ nanocompounds from agricultural by-products using femtosecond laser irradiation. Biowastes of rice husk and wheat straw are value-engineered to carbonaceous structures in a single-step process under ambient conditions. Our results demonstrate that by controlling the laser fluence, structures with a variety of different morphologies from nanostructures to microstructures can be achieved. Also, the results indicate that altering the laser processing parameters influences the chemical composition of the synthesized structures. This sustainable approach presents an important step towards synthesizing 3-D micro/nanofibrous compounds from biowaste materials. These structures, as-synthesized or as nanocomposite fillers, can have practical uses in electronic, sensing, biological, and environmental applications.

Sustainable approach toward synthesis of green functional carbonaceous 3-D micro/nanostructures from biomass

This study proposes a novel technique to synthesize functional carbonaceous three-dimensional (3-D) micro/ nanocompounds from agricultural by-products using femtosecond laser irradiation. Biowastes of rice husk and wheat straw are value-engineered to carbonaceous structures in a single-step process under ambient conditions. Our results demonstrate that by controlling the laser fluence, structures with a variety of different morphologies from nanostructures to microstructures can be achieved. Also, the results indicate that altering the laser processing parameters influences the chemical composition of the synthesized structures. This sustainable approach presents an important step towards synthesizing 3-D micro/nanofibrous compounds from biowaste materials. These structures, as-synthesized or as nanocomposite fillers, can have practical uses in electronic, sensing, biological, and environmental applications.

An Inexpensive, Portable, and Versatile Electronic Nose for Illness Detect

Health-care strategies are currently oriented towards non-invasive techniques for an early diagnosis. The chemical analysis seems to be a good answer to accomplish both prevention, a fundamental requirement for an efficient treatment of the disease, and non-invasivity. GC is very accurate but is expensive; its sampling and assaying processes are complicated and time consuming, while its results require expert interpretation. Over the last decade, "electronic sensing" or "e-sensing" technologies have undergone some important developments from both a technical and commercial point of view. Particularly, in recent years, the usefulness of the electronic nose has been clinically proved as an opportunity for the early detection of such diseases as lung cancer, diabetes, and tuberculosis. In this paper, a portable, versatile and inexpensive system for the measurement of gas concentration through a gas sensor array is described. The system uses low cost metal oxide gas transducers and can automatically compensate the values of gas concentration detected according to the current values of temperature and humidity. The device works in slave mode and its acquired and computed data are available by means of a host/slave ASCII serial communication protocol. A host device can periodically require the current values of gas concentration and apply the appropriate algorithms for the detection of the investigated substances.