scholarly journals A Comprehensive Review on Plant-Derived Mucilage: Characterization, Functional Properties, Applications, and Its Utilization for Nanocarrier Fabrication

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1066
Author(s):  
Mansuri M. Tosif ◽  
Agnieszka Najda ◽  
Aarti Bains ◽  
Ravinder Kaushik ◽  
Sanju Bala Dhull ◽  
...  
Keyword(s):  
Functional Properties ◽  
Extraction Methods ◽  
Synthetic Polymers ◽  
Edible Coatings ◽  
Practical Application ◽  
Plant Parts ◽  
Fresh Vegetables ◽  
Coating Methods ◽  
Biodegradable Properties ◽  
Vegetables And Fruits

Easily sourced mucus from various plant parts is an odorless, colorless and tasteless substance with emerging commercial potential in agriculture, food, cosmetics and pharmaceuticals due to its non-toxic and biodegradable properties. It has been found that plant-derived mucilage can be used as a natural thickener or emulsifier and an alternative to synthetic polymers and additives. Because it is an invisible barrier that separates the surface from the surrounding atmosphere, it is used as edible coatings to extend the shelf life of fresh vegetables and fruits as well as many food products. In addition to its functional properties, mucilage can also be used for the production of nanocarriers. In this review, we focus on mucus extraction methods and its use as a natural preservative for fresh produce. We detailed the key properties related to the extraction and preservation of food, the mechanism of the effect of mucus on the sensory properties of products, coating methods when using mucus and its recipe for preserving fruit and vegetables. Understanding the ecological, economic and scientific factors of production and the efficiency of mucus as a multi-directional agent will open up its practical application in many industries.

Larvicidal Activity of Essential Oils Against Aedes aegypti (Diptera: Culicidae)

2020 ◽  
Vol 26 (33) ◽  
pp. 4092-4111
Author(s):  
Mikael A. de Souza ◽  
Larissa da Silva ◽  
Maria A. C. dos Santos ◽  
Márcia J. F. Macêdo ◽  
Luiz J. Lacerda-Neto ◽  
...  
Keyword(s):  
Aedes Aegypti ◽  
Essential Oils ◽  
Larval Mortality ◽  
Analytical Techniques ◽  
Extraction Methods ◽  
Control Programs ◽  
Plant Parts ◽  
Natural Insecticides ◽  
Methods Analytical ◽  
Meta Analyses

The Aedes aegypti is responsible for the transmission of arboviruses, which compromise public health. In the search for synthetic product alternatives, essential oils (OEs) have been highlighted by many researchers as natural insecticides. This systematic review (SR) was performed according to PRISMA guidelines (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) and its objective was to evaluate studies addressing OEs with larvicidal properties against Ae. aegypti, through electronic database searches (Pubmed, Science Direct and Scielo), covering an overview of the plant sources OEs, which plant parts were used, the extraction methods, analytical techniques, major and/or secondary constituents with greater percentages, as well as the LC50s responsible for larval mortality. Following study analysis, plants distributed across 32 families, 90 genera and 175 species were identified. The Lamiaceae, Myrtaceae, Piperaceae, Asteraceae, Rutaceae, Euphorbiaceae and Lauraceae families obtained the highest number of species with toxic properties against larvae from this vector. Practically all plant parts were found to be used for OE extraction. Hydrodistillation and steam distillation were the main extraction methods identified, with GC-MS/GC-FID representing the main analytical techniques used to reveal their chemical composition, especially of terpene compounds. In this context, OEs are promising alternatives for the investigation of natural, ecologically correct and biodegradable insecticides with the potential to be used in Ae. aegypti control programs.

scholarly journals Vibration-Based Fault Diagnosis of Commutator Motor

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Adam Glowacz ◽  
Witold Glowacz
Keyword(s):  
Fault Diagnosis ◽  
Extraction Methods ◽  
Total Efficiency ◽  
Practical Application ◽  
Backpropagation Neural Network ◽  
Vibration Signals ◽  
Linear Discriminant ◽  
Recognition Efficiency ◽  
Signal Processing Methods ◽  
Selection Of

This paper presents a study on vibration-based fault diagnosis techniques of a commutator motor (CM). Proposed techniques used vibration signals and signal processing methods. The authors analysed recognition efficiency for 3 states of the CM: healthy CM, CM with broken tooth on sprocket, CM with broken rotor coil. Feature extraction methods called MSAF-RATIO-50-SFC (method of selection of amplitudes of frequencies ratio 50 second frequency coefficient), MSAF-RATIO-50-SFC-EXPANDED were implemented and used for an analysis. Feature vectors were obtained using MSAF-RATIO-50-SFC, MSAF-RATIO-50-SFC-EXPANDED, and sum of RSoV. Classification methods such as nearest mean (NM) classifier, linear discriminant analysis (LDA), and backpropagation neural network (BNN) were used for the analysis. A total efficiency of recognition was in the range of 79.16%–93.75% (TV). The proposed methods have practical application in industries.

scholarly journals Space Flight Cultivation for Radish (Raphanus sativus) in the Advanced Plant Habitat

2021 ◽  
Vol 9 (1) ◽  
pp. 121-132
Author(s):  
Susan John ◽  
Farid Abou-Issa ◽  
Karl H. Hasenstein
Keyword(s):  
Raphanus Sativus ◽  
Growth Substrate ◽  
Confined Space ◽  
Kennedy Space Center ◽  
Growth Optimization ◽  
Cultivation Period ◽  
Fresh Vegetables ◽  
Kennedy Space ◽  
Vegetables And Fruits ◽  
Plant Habitat

Abstract In preparation of a flight experiment, ground-based studies for optimizing the growth of radishes (Raphanus sativus) were conducted at the ground-based Advanced Plant Habitat (APH) unit at the Kennedy Space Center (KSC), Florida. The APH provides a large, environmentally controlled chamber that has been used to grow various plants, such as Arabidopsis, wheat, peppers, and now radish. In support of National Aeronautics and Space Administration (NASA)'s goals to provide astronauts with fresh vegetables and fruits in a confined space, it is important to extend the cultivation period to produce substantial biomass. We selected Raphanus sativus cv. Cherry Belle as test variety both for preliminary tests and flight experiments because it provides edible biomass in as few as four weeks, has desirable secondary metabolites (glucosinolates), is rich in minerals, and requires relatively little space. We report our strategies to optimize the growth substrate, watering regimen, light settings, and planting design that produces good-sized radishes, minimizes competition, and allows for easy harvesting. This information will be applicable for growth optimization of other crop plants that will be grown in the APH or other future plant growth facilities.

scholarly journals Air inflated Greenhouse As Urban Farming Facilities: Architectural Overview

2017 ◽  
Vol 1 (1) ◽  
pp. 1-8
Author(s):  
Syed Zainol Abidin ◽  
Ronny D. Nasihien ◽  
Hery Budiyanto
Keyword(s):  
Urban Areas ◽  
Price Impact ◽  
Test Material ◽  
Urban Farming ◽  
Residential Housing ◽  
Fresh Vegetables ◽  
Urban Settlements ◽  
Increase Productivity ◽  
Vegetables And Fruits

Urban Farming utilizing land intensification, in order to meet the needs of fresh vegetables and fruits everyday for the community residential / housing in urban areas. Air Inflated Greenhouse as urban farming facilities, can be built and transferred to a residential location / specific housing is easy, safe, fast and lightweight (0,55mm PVC tarpaulin) so that urban farming products closer to consumers in urban settlements, the price impact getting cheaper, but quality. Long-term goal is to develop prototype Air inflated Greenhouse as facilities Urban Farming which fulfills the power, speed, effectiveness, comfort and encourage crops of fruit / vegetable hydroponic hygienic, cheap and profitable, so that the product Air Inflated Greenhouse automatically support an increase in food production, specific target is the availability prototype Air Inflated Greenhouse as Urban Farming facility in order to increase productivity of crops of fruit / vegetable hydroponic hygienic, cheap and profitable, so the high prospects for mass production by SMEs Partners to meet national food requirements. Methods using methods Experiments and Action Research, beginning with the development of design, manufacture, testing and repair of prototype Air Inflated Greenhouse includes (1) a test of strength and endurance of materials Air Inflated Greenhouse to the weather, (2) test material Air Inflated Greenhouse most effective as a component of the structure, (3) test the speed of manufacture, transport, assembly, installation, dismantling Air Inflated Greenhouse, (4) test the temperature, humidity and air pressure in the Air Inflated Greenhouse.

Grid synchronization and symmetrical components extraction with PLL algorithm for grid connected power electronic converters - a review

2011 ◽  
Vol 59 (4) ◽  
pp. 485-497 ◽  
Author(s):  
M. Bobrowska-Rafal ◽  
K. Rafal ◽  
M. Jasinski ◽  
M. Kazmierkowski
Keyword(s):  
Extraction Methods ◽  
Power Electronic ◽  
Practical Application ◽  
Power Electronic Converters ◽  
Symmetrical Components ◽  
Grid Synchronization ◽  
Synchronous Reference Frame ◽  
Symmetrical Component ◽  
Rotating Coordinates ◽  
Virtual Flux

Grid synchronization and symmetrical components extraction with PLL algorithm for grid connected power electronic converters - a reviewIn this paper, a review of Phase Locked Loop (PLL) algorithms and symmetrical component extraction methods intended for grid-connected power electronic converters are presented. Proposed classification is based on voltage representation in three coordinates: natural (abc), stationary (αβ) and rotating coordinates (dq). The three selected algorithms are described in details: Dual Second Order Generalized Integrator (DSOGI-PLL), Dual Virtual Flux - both in stationary coordinates. The third one, in rotating dq coordinates, is Dual Synchronous Reference Frame PLL (DSRF-PLL). A comparison of PLL algorithms is presented. Also, selected experimental results are given to verify practical application of discussed algorithms.

A study of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) biofilms’ thermal and biodegradable properties reinforced with halloysite nanotubes

2018 ◽  
Vol 52 (23) ◽  
pp. 3199-3207 ◽  
Author(s):  
SM Kamrul Hasan ◽  
S Zainuddin ◽  
J Tanthongsack ◽  
MV Hosur ◽  
L Allen
Keyword(s):  
Petroleum Products ◽  
Halloysite Nanotubes ◽  
Synthetic Polymers ◽  
Soil Conditions ◽  
Solvent Casting ◽  
Casting Method ◽  
Scanning Calorimetry ◽  
Structural Applications ◽  
Biodegradation Process ◽  
Biodegradable Properties

The aim of this study is to investigate and optimize the performance of a promising biopolymer, poly (3-hydroxybutyrate-co-3-hydroxyvalerate) which can potentially replace non-biodegradable synthetic polymers derived from toxic petroleum products. Poly (3-hydroxybutyrate-co-3-hydroxyvalerate) biofilms were prepared using solvent casting method, and its thermal properties were determined using thermogravimetric and differential scanning calorimetry techniques. Also, the durability and biodegradability of these films were studied by keeping the samples in water and Alabama soil conditions for various lengths of time. Our results showed that the thermal and moisture resistance of poly (3-hydroxybutyrate-co-3-hydroxyvalerate) biopolymer can be enhanced significantly with the addition of low halloysite nanotubes concentrations. Also, the biodegradation process of the poly (3-hydroxybutyrate-co-3-hydroxyvalerate) films was faster with the addition of halloysite nanotubes attributed to the accelerated microbial microorganism reaction in the soil. This study led to cognize that the PHBV biopolymers added with halloysite nanotubes can be successfully used for various biomedical, industrial and structural applications, and then decompose at a desired faster rate afterward.

scholarly journals Detection of Cryptosporidium and Giardia in foods of plant origin in North-Western Greece

2020 ◽  
Vol 18 (4) ◽  
pp. 574-578
Author(s):  
Hercules Sakkas ◽  
Vangelis Economou ◽  
Petros Bozidis ◽  
Panagiota Gousia ◽  
Chrissanthy Papadopoulou ◽  
...  
Keyword(s):  
Health Hazard ◽  
Diarrhoeal Disease ◽  
Diagnostic Methods ◽  
Plant Origin ◽  
Potential Health ◽  
Worldwide Distribution ◽  
Fresh Vegetables ◽  
Vegetables And Fruits ◽  
North Western ◽  
Western Greece

Abstract Giardia and Cryptosporidium are recognized as leading causes of waterborne and foodborne diarrhoeal disease with worldwide distribution. The study aimed to determine the protozoan contamination of various foods of plant origin. A total of 72 samples from 27 different varieties of fresh vegetables and fruits were collected from supermarkets and open markets in North-Western Greece and were examined using conventional diagnostic methods. Two out of 72 (2.8%) samples were found positive for Cryptosporidium oocysts, while no sample was found to be positive for Giardia cysts. The results show the presence of protozoan contamination in foods of plant origin, which may constitute a potential health hazard.

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