scholarly journals Optimizatiaon of MRS (De Man, Rogosa and Sharpe) Media with an organic waste substitute to assess the potential of Lactobacillus in Ink degradation

2021 ◽  
pp. 566-574
Author(s):  
Dolly Pandit ◽  
Soma Bhunia ◽  
Gauthami Bitla ◽  
Hajra Gupta
Keyword(s):  
Anaerobic Condition ◽  
Banana Peel ◽  
Lactobacillus Species ◽  
Carbohydrate Source ◽  
Pollution Problem ◽  
Environmental Pollution Problem ◽  
Probiotic Strains ◽  
Banana Peel Powder ◽  
De Man ◽  
Mrs Medium

Lactobacillus species are normally found in human digestive and urinary tracts. In this study, the capability of probiotic strains to grow in media using banana peel waste as an alternative carbohydrate source was investigated. Lactic acid bacteria were isolated using homemade curd, banana peel powder was made using an alternate drum drier technique and used as a fermentation media on which strain of probiotic, Lactobacillus sp. were grown. The result showed that bacterial growth using banana peel powder obtained at 370C under anaerobic condition (2- 3 days), was comparable to growth seen in MRS medium. It can be concluded that the banana peel powder can be utilized to produce culture medium for cultivation of probiotic bacteria as a substitute to MRS medium which is expensive for cultivating probiotics. This will not only result in cost reduction of probiotic from cheap, inexpensive Agro-waste material, but also helps in solving the environmental pollution problem caused by their extensive disposal. The capability of Lactobacillus sp. to degrade dye was also investigated. Lactobacilli was incorporated under anaerobic condition in the M9 media containing the dye. The dye degrading capability of Lactobacillus sp was estimated colorimetrically at 520nm. The result showed a decrease in the dye concentration obtained at 37oC under anaerobic condition. So, it can be concluded that the Lactobacillus strain can be used for the bioremediation of dyes.

scholarly journals Green innovation, government incentive and enterprise performance are explored from the perspective of game

2021 ◽  
Vol 275 ◽  
pp. 02006
Author(s):  
Xiaohui Ren
Keyword(s):  
Game Theory ◽  
Rapid Development ◽  
Enterprise Performance ◽  
Green Innovation ◽  
Green Development ◽  
Pollution Problem ◽  
Environmental Pollution Problem ◽  
And Performance ◽  
The Relationship

The rapid development of economy brings serious environmental pollution problem. Green innovation, as the connection point between government environmental regulation measures and sustainable green development of enterprises, has become one of the important choices for the transformation and development of enterprises. Based on the classic model of “prisoner’s dilemma” in game theory, this paper deeply analyzes the relationship between green innovation and performance. It is found that it is easy to get into trouble if only relying on the spontaneous green innovation within the enterprise. Applying appropriate pressure outside the enterprise can promote the change of green innovation and bring long-term benefits to the enterprise.

The Analysis of the Current Situation and Countermeasures of New Energy Vehicles

2014 ◽  
Vol 686 ◽  
pp. 639-642
Author(s):  
Wei Li ◽  
Ming Yuan Ma
Keyword(s):  
Social Capital ◽  
Management Mechanism ◽  
Pollution Problem ◽  
The Social ◽  
New Energy ◽  
Environmental Pollution Problem ◽  
The Government ◽  
New Energy Vehicle ◽  
Battery Technology ◽  
New Energy Vehicles

With pm2.5 and environmental pollution problem of urban smog, energy conservation and environmental protection has become an important subject in the current car development, so the new energy vehicles get more and more favor from the government and enterprises. But the new energy vehicles’ market share in our country is still small and the technology is not mature. This paper summarizes the experience and lessons in the development of new energy vehicles at home and abroad, and then based on which analyses the reasons that restrict the development of the new energy vehicles, finally puts forward the countermeasures of new energy vehicles development from the government's macro policy, battery technology, management mechanism, public participation and so on. In addition, it also puts forward a new opinion that encourages and guides the social capital to participate in the operation of the new energy vehicle infrastructure construction and operation, then provides a model for our country’s new energy vehicles future development.

Development and Analysis of Completely Biodegradable Cellulose/Banana Peel Powder Composite Films

2019 ◽  
Vol 18 (1) ◽  
pp. 151-160
Author(s):  
Senthil Muthu Kumar T ◽  
Rajini N ◽  
Alavudeen A ◽  
Suchart Siengchin ◽  
Varada Rajulu A ◽  
...  
Keyword(s):  
Composite Films ◽  
Powder Composite ◽  
Banana Peel ◽  
Banana Peel Powder

scholarly journals Identification and Sensitivity of Vaginal and Probiotic Lactobacillus species to Urinary Antibiotics

2020 ◽  
Vol 12 (02) ◽  
pp. 111-114
Author(s):  
Lipika Singhal ◽  
Varsha Gupta ◽  
Menal Gupta ◽  
Poonam Goel ◽  
Jagdish Chander
Keyword(s):  
Vaginal Microbiota ◽  
Lactobacillus Species ◽  
Ionization Time ◽  
Flight Mass Spectrometry ◽  
Urogenital Infections ◽  
Probiotic Lactobacillus ◽  
Probiotic Strains ◽  
Vaginal Health ◽  
Uropathogenic Bacteria ◽  
Lactobacillus Spp

Abstract Objectives Healthy vaginal microbiota is mainly dominated by Lactobacillus species namely L. crispatus, L. gasseri, L. jensenii, and L. iners. Lactobacilli are thought to play an important role in the prevention of urogenital infections, and Lactobacillus probiotics to restore and/or maintain vaginal health has been advocated. These can interfere with the adherence, growth, and colonization by uropathogenic bacteria, thus reducing the risk of urinary tract infection (UTI). This study aims to isolate and evaluate the susceptibility of healthy vaginal and probiotic Lactobacillus spp. to urinary antibiotics. Materials and methods A total of 50 premenopausal, nonmenstruating women with no symptoms of vaginal infection or UTI or antimicrobial use in the past 2 weeks were enrolled. Two high vaginal swabs were collected for Nugent’s scoring and anaerobic culture. Colonies yielding gram-positive rods were confirmed by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS). Lactobacillus strains in a vaginal probiotic tablet were also isolated, and the sensitivity of both sets to urinary antibiotics was determined. Results A total of 29 Lactobacillus spp. were isolated, including L. crispatus (15), L. gasseri (5), L. vaginalis (4), L. paracasei (2), L. curvatus (1), L. fermentum (1), and L. paraplantarum (1). All strains were susceptible to nitrofurantoin and resistant to norfloxacin, gentamicin, and cotrimoxazole (except L. paracasei). The probiotic strains were pan-sensitive. Conclusions Prophylactic antibiotics are capable of eliminating the normal vaginal inhabitants, which may increase the probability of UTI. The administration of vaginal probiotics as an alternate or multidrug therapy can restore vaginal microbiota and help prevent recurrent UTI.

Morphological Evolution of Low-Grade Silica Fume at Elevated Temperature

2017 ◽  
Vol 36 (6) ◽  
pp. 607-613 ◽  
Author(s):  
Junhong Chen ◽  
Tong Li ◽  
Xiaoping Li ◽  
Kuo-Chih Chou ◽  
Xinmei Hou
Keyword(s):  
Elevated Temperature ◽  
Silica Fume ◽  
Room Temperature ◽  
Morphological Evolution ◽  
Hydroxyl Groups ◽  
Morphological Development ◽  
Low Grade ◽  
Structural Development ◽  
Pollution Problem ◽  
Environmental Pollution Problem

AbstractTo solve the environmental pollution problem caused by low-grade silica fume (SiO2, < 86 mass%) and further expand its application field, the morphological development of low-grade silica fume from room temperature to 900 °C in air was investigated using TG-DTA, SEM and TEM techniques. The structural development of silica fume was further analyzed using FT-IR and Raman spectrum. The results show that silica fume contains many defects of broken bands such as Si-O or ≡Si at room temperature. When exposed to the moister or water, the broken bonds tend to react with water and result in the formation of Si-OH and adjacent hydroxyl groups of Si-OH•OH-Si. At elevated temperature up to 900 °C, the structure of silica fume becomes compact due to the reconstruction of the broken bonds caused by the dehydration reaction.

scholarly journals Antioxidant Molecules from Plant Waste: Extraction Techniques and Biological Properties

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1566
Author(s):  
Cynthia E. Lizárraga-Velázquez ◽  
Nayely Leyva-López ◽  
Crisantema Hernández ◽  
Erick Paul Gutiérrez-Grijalva ◽  
Jesús A. Salazar-Leyva ◽  
...  
Keyword(s):  
Antibacterial Properties ◽  
Biological Properties ◽  
Antioxidant Compounds ◽  
Green Technologies ◽  
Advantages And Disadvantages ◽  
Pollution Problem ◽  
Plant Waste ◽  
Potential Applications ◽  
Environmental Pollution Problem ◽  
Pharmaceutical Industries

The fruit, vegetable, legume, and cereal industries generate many wastes, representing an environmental pollution problem. However, these wastes are a rich source of antioxidant molecules such as terpenes, phenolic compounds, phytosterols, and bioactive peptides with potential applications mainly in the food and pharmaceutical industries, and they exhibit multiple biological properties including antidiabetic, anti-obesity, antihypertensive, anticancer, and antibacterial properties. The aforementioned has increased studies on the recovery of antioxidant compounds using green technologies to value plant waste, since they represent more efficient and sustainable processes. In this review, the main antioxidant molecules from plants are briefly described and the advantages and disadvantages of the use of conventional and green extraction technologies used for the recovery and optimization of the yield of antioxidant naturals are detailed; finally, recent studies on biological properties of antioxidant molecules extracted from plant waste are presented here.

Experimental Study on Sulfuric Acid Leaching Behavior of Chromite with Different Temperature

2011 ◽  
Vol 361-363 ◽  
pp. 628-631 ◽  
Author(s):  
Cheng Jun Liu ◽  
Jie Qi ◽  
Mao Fa Jiang
Keyword(s):  
Sulfuric Acid ◽  
Acid Leaching ◽  
Raw Material ◽  
Leaching Rate ◽  
Sulfuric Acid Leaching ◽  
Leaching Process ◽  
Pollution Problem ◽  
Environmental Pollution Problem ◽  
Leaching Solution ◽  
Leaching Residue

Utilizing Pakistan chromite as raw material, the rapid leaching of chromium and iron could be realized by the sulfuric acid leaching process on the condition of atmospheric pressure and the addition of oxidant A. And the leaching rate of chromium and iron would be 98.5% and 71.9%, respectively. The sulfuric acid leaching processes with different temperature were systematically studied by chemical analysis and phase analysis. The results showed that, with the increase of reaction temperature, the leaching rate of chromium would increase gradually, but the leaching rate of iron increased at first and then decreases and reached its maximum at 140°C. When the temperature > 160°C, the phases of the leaching residue were magnesium iron silicate and a few of silica, no chromohercynite, chrompicotite and magnesioferrite existed in the chromite. The leaching solution of sulfuric acid leaching process could be used for preparing the basic chrome sulfate, and there is no Cr6+ in the leaching residue and solution. The results would provide theoretical guidance for solving environmental pollution problem of Cr6+ in traditional chromate production process.

Development and Design of Coal Gangue Concrete Filling Material

2011 ◽  
Vol 295-297 ◽  
pp. 1198-1201
Author(s):  
You Xia Sun ◽  
Xing Dong Li
Keyword(s):  
Chemical Properties ◽  
Industrial Test ◽  
Coal Gangue ◽  
Filling Material ◽  
Mix Proportion ◽  
Pollution Problem ◽  
Environmental Pollution Problem ◽  
Concrete Filling ◽  
The Cost ◽  
Resource Shortage

This paper developed a kind of concrete with coal gangue as coarse aggregate in order to solve the environmental pollution problem and meet the requirement of filling material in gob-side entry retaining. Firstly physical properties and chemical properties of coal gangue were analyzed, and then several schemes of mix proportion were designed, according to which new product was trial-produced in the laboratory. The optimal mixing ratio was selected by testing the performance of trial-product. Industrial test indicate that the coal gangue concrete can be used as filling material for the gob-side entry retaining, which not only solve the problem of ecological environment and resource shortage, but also reduce the cost of filling material and increase the economic benefit of coal mine enterprise.

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