scholarly journals Bioemulsifiers

2021 ◽  
Vol 2 (10) ◽  
pp. 01-02
Author(s):  
Nida Tabassum Khan
Keyword(s):  
Carbon Source ◽  
Thin Layer ◽  
Production Cost ◽  
Culture Media ◽  
Amphiphilic Compound ◽  
Industrial Sectors ◽  
Hydrocarbon Emulsion ◽  
Carbon Based

Bioemulsifier is a poly-anionic and amphiphilic compound which can balance out the hydrocarbon emulsion in water by making an extremely thin layer between the hydrocarbon beads and water. Most extreme focus is acquired when culture media containing 12 carbon-based unsaturated fats are utilized as the carbon source. Bioemulsifier with proficient emulsifying action and low-production cost, meets various prerequisites of emulsification in the most practical manner in numerous industrial sectors such as in food and dairy.

Production of novel carbon nanostructures by electrochemical reduction of polychlorinated organic rings under mild conditions for supercapacitors

2021 ◽  
Author(s):  
Züleyha Kudaş ◽  
Emir Çepni ◽  
Emre Gür ◽  
Duygu Ekinci
Keyword(s):  
Carbon Source ◽  
Electrochemical Reduction ◽  
Electrochemical Method ◽  
Carbon Nanostructures ◽  
Electrochemical Growth ◽  
Mild Conditions ◽  
One Step ◽  
The One ◽  
Carbon Based

Here, new carbon-based nanostructures were prepared by the one-step electrochemical method using hexagonal and pentagonal polychlorinated organic rings as carbon source. The electrochemical growth of carbon nanostructures on substrates was...

scholarly journals ANALISIS DAYA SAING SEKTOR INDUSTRI PRIORITAS INDONESIA DALAM MENGHADAPI PASAR ASEAN

2018 ◽  
Vol 4 (1) ◽  
pp. 71-93
Author(s):  
Isventina Isventina ◽  
Nunung Nuryartono ◽  
Manuntun Parulian Hutagaol
Keyword(s):  
Exchange Rate ◽  
Data Analysis ◽  
Panel Data ◽  
Human Resources ◽  
Natural Resources ◽  
Production Cost ◽  
Panel Data Analysis ◽  
Export Price ◽  
Fixed Capital ◽  
Industrial Sectors

This study aimed to analyze the factors that influence competitiveness of Indonesia’s priority industrial sector in facing the ASEAN market by using Revealed Comparative Advantage (RCA) and panel data analysis. The study period was in 2001-2013 and variables are used, among others, the export price of products in the industry priorities, labor productivity, fixed capital and riil exchange rate. Based on the calculation of the level of competitiveness by using RCA, showed that the Indonesia's priority industrial sectors have strong competitive (RCA>1) in the ASEAN market, except for the chemical industry and machinery and equipment industry. That is, Indonesia has a comparative advantage in most of the priority industrial sectors, so that it can be used to support the government's strategy to expand the national industrial market to the ASEAN region. While the results of the panel data analysis showed that the export price is the most influential factor for the competitiveness of priority industrial sectors in Indonesia. In this case, the export price is a reflection of the production cost. The high of production cost indicates that the purchase price of inputs by exporting companies is also high, so that the export price was high. Because the essence of competitiveness is relatively low cost, the high export prices showed a decreasing competitiveness. Other factors that affect are the real exchange rate and labor productivity. Rupiah depreciation can encourage the growth of exports, which in turn can improve competitiveness. Meanwhile, the development of human resources that make industrial policy was originally based on cheap labor and natural resources can be developed into a productivity-based industries are supported by qualified human resources as well as science and high technology. On the other hand, the addition of variable fixed capital does not affect the competitiveness of priority industrial sectors. This is because the impact of the increased competitiveness of the addition of fixed capital in a given year is not directly felt in the year, but will be felt in the next few years. Thus, the strategy can be formulated to improve the competitiveness of the priority industrial sectors, including developing the upstream industry and among industry based on natural resources and the control of exports of raw materials, develop human resources industry players in the Indonesia’s priority industrial sectors with training and innovation activities, developing downstream industries as well as the increase in value-added products in the priority industrial sectors through product diversification and improve the pattern of cooperation with the manufacturers of other countries in the ASEAN region through the export promotion.  Keywords: ASEAN Integration, Manufacturing Industry, Competitiveness, Panel Data Analysis

scholarly journals In vitro development of the Mexican endemic twig epiphyte Erycina hyalinobulbon (Orchidaceae) to promote its conservation

2021 ◽  
Author(s):  
José Tonatiuh Gutiérrez Zavala ◽  
Irebe Ávila Díaz ◽  
Rosa Elia Magaña Lemus
Keyword(s):  
Carbon Source ◽  
Culture Media ◽  
Low Cost ◽  
Illegal Trade ◽  
Wild Populations ◽  
Short Life ◽  
In Vitro Development ◽  
Basal Salts ◽  
Vitro Development

Background and Aims: Orchids in Mexico are mainly threatened by deforestation, changes in land use, illegal trade, deficiencies in environmental policy and legislation, and a lack of community participation in the conservation of their forests. Erycina hyalinobulbon is an endemic twig epiphyte orchid with a short life cycle and with large flowers in relation to its size, for which it has been harvested from its wild populations. The objectives of this work were to evaluate the in vitro development of E. hyalinobulbon in culture media with organic supplements, to compare sucrose vs. N’Joy Stevia® as a carbon source for its initial stages of development, and to evaluate the development of its seedlings in media enriched with plant growth regulators (PGR).Methods: For the sowing of seeds, PhytamaxTM and MS medium at 30% of its basal salts were used in combination with organic supplement (coconut milk, pineapple puree and banana puree), along with the Phy medium used as control. In order to measure the effect of sucrose vs. N´Joy Stevia® as a carbon source, these two treatments were used, with the PhytamaxTM medium. To evaluate the development of seedlings with PGR, three treatments were tested: the 100% PhytamaxTM control, 30% PhytamaxTM with 1.166 ml/l of Maxi-grow and the medium Chiu.Key results: PhytamaxTM medium added with banana promoted germination by 9.3%, being a low cost and easy production option. Ninety days after sowing, N´Joy Stevia® as a carbon source promoted germination by 8%. The best development of the seedlings was registered in the medium PhytamaxTM without PGR.Conclusions: With this study, it was possible to develop an accessible in vitro propagation system for E. hyalinobulbon, in order to sustainably manage it and favor its conservation.

scholarly journals Volatile Organic Compound Composition and Glandular Trichome Characteristics of In Vitro Propagated Clinopodium pulegium (Rochel) Bräuchler: Effect of Carbon Source

Plants ◽  
2022 ◽  
Vol 11 (2) ◽  
pp. 198
Author(s):  
Dragana Stojičić ◽  
Svetlana Tošić ◽  
Gordana Stojanović ◽  
Bojan Zlatković ◽  
Snežana Jovanović ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Carbon Source ◽  
Stress Responses ◽  
Culture Media ◽  
Glandular Trichomes ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Biotic And Abiotic Stress ◽  
Volatile Organic

Clinopodium pulegium (Rochel) Bräuchler (Lamiaceae) is an endangered species endemic to the Southern Carpathians. It is characterized by the production of high amounts of essential oils, which emit volatile organic compounds (VOCs) that have an essential role in biotic and abiotic stress responses and in plant–plant and plant–insect interactions. The present study was initiated to phytochemically examine the influence of different carbon sources in the nutrition medium on VOC emissions of micropropagated C. pulegium plants, using gas chromatography–mass spectrometry analysis of headspace VOCs. The volatile profiles were subjected to multivariate analysis with respect to the presence, concentration and type of carbon source in the nutrient medium. In addition, the effect of different carbohydrates on the density and size of the leaf glandular trichomes, the main structures involved in the emission of VOCs, was determined. A total of 19 VOCs, primarily belonging to mono- and sesquiterpenes previously described in plants, were tentatively identified. Six VOCs were produced at levels higher than 2% of the total VOC emission, dominated by pulegone, ß-pinene and menthone. Inclusion of the carbohydrates in the culture media affected the production of the main leaf trichome-associated volatile allelochemicals although the qualitative composition of the volatiles changed only slightly. Multivariate analysis showed that the concentration, rather than the carbohydrate type, influenced the VOC profile.

scholarly journals Recent Developments in the Immobilization of Laccase on Carbonaceous Supports for Environmental Applications - A Critical Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Younes Adamian ◽  
Linson Lonappan ◽  
Komla Alokpa ◽  
Spiros N. Agathos ◽  
Hubert Cabana
Keyword(s):  
Culture Media ◽  
High Surface ◽  
High Surface Area ◽  
Catalyst System ◽  
Ligninolytic Enzyme ◽  
Environmental Applications ◽  
Laccase Production ◽  
High Porosity ◽  
Laccase Immobilization ◽  
Carbon Based

Τhe ligninolytic enzyme laccase has proved its potential for environmental applications. However, there is no documented industrial application of free laccase due to low stability, poor reusability, and high costs. Immobilization has been considered as a powerful technique to enhance laccase’s industrial potential. In this technology, appropriate support selection for laccase immobilization is a crucial step since the support could broadly affect the properties of the resulting catalyst system. Through the last decades, a large variety of inorganic, organic, and composite materials have been used in laccase immobilization. Among them, carbon-based materials have been explored as a support candidate for immobilization, due to their properties such as high porosity, high surface area, the existence of functional groups, and their highly aromatic structure. Carbon-based materials have also been used in culture media as supports, sources of nutrients, and inducers, for laccase production. This study aims to review the recent trends in laccase production, immobilization techniques, and essential support properties for enzyme immobilization. More specifically, this review analyzes and presents the significant benefits of carbon-based materials for their key role in laccase production and immobilization.

scholarly journals Effects of different culture media on physiological features and laboratory scale production cost of Dunaliella salina

2020 ◽  
Vol 27 ◽  
pp. e00508
Author(s):  
Guilherme Augusto Colusse ◽  
Carlos Rafael Borges Mendes ◽  
Maria Eugênia Rabello Duarte ◽  
Julio Cesar de Carvalho ◽  
Miguel Daniel Noseda
Keyword(s):  
Production Cost ◽  
Dunaliella Salina ◽  
Culture Media ◽  
Laboratory Scale ◽  
Scale Production

Naphthalene Degradation and Biosurfactant Activity by Bacillus cereus 28BN

2005 ◽  
Vol 60 (7-8) ◽  
pp. 577-582 ◽  
Author(s):  
Borjana Tuleva ◽  
Nelly Christova ◽  
Bojidar Jordanov ◽  
Boryana Nikolova-Damyanova ◽  
Petar Petrov
Keyword(s):  
Surface Tension ◽  
Carbon Source ◽  
Thin Layer ◽  
Bacillus Cereus ◽  
Sole Carbon Source ◽  
Stationary Growth ◽  
Spectra Analysis ◽  
Naphthalene Degradation ◽  
Environmental Technologies ◽  
Layer Chromatography

Biosurfactant activity and naphthalene degradation by a new strain identified as Bacillus cereus 28BN were studied. The strain grew well and produced effective biosurfactants in the presence of n-alkanes, naphthalene, crude oil and vegetable oils. The biosurfactants were detected by the surface tension lowering of the medium, thin layer chromatography and infrared spectra analysis. With (2%) naphthalene as the sole carbon source, high levels of rhamnolipids at a concentration of 2.3 g l-1 were determined in the stationary growth. After 20 d of incubation 72 ± 4% of the initial naphthalene was degraded. This is the first report for a Bacillus cereus rhamnolipid producing strain that utilized naphthalene under aerobic conditions. The strain looks promising for application in environmental technologies.

A Rapid and Inexpensive Method for the Determination of Biogenic Amines from Bacterial Cultures by Thin-Layer Chromatography

2005 ◽  
Vol 68 (3) ◽  
pp. 625-629 ◽  
Author(s):  
EMILIA GARCÍA-MORUNO ◽  
ALFONSO V. CARRASCOSA ◽  
ROSARIO MUÑOZ
Keyword(s):  
Thin Layer ◽  
Biogenic Amines ◽  
Thin Layer Chromatography ◽  
Culture Media ◽  
Bacterial Strains ◽  
Inexpensive Method ◽  
Ph Indicator ◽  
Amino Acid Precursor ◽  
Differential Medium ◽  
Layer Chromatography

This study describes a simple, rapid, and inexpensive method to determine the ability to produce biogenic amines (BA) by bacteria in liquid culture media containing the corresponding amino acid precursor. In view of their role as starters in food fermentation, BA formation by these microorganisms has to be taken into consideration by selecting appropriate strains. For the standardization of the assay pure BA were mixed. The method avoids a prior extraction step of the amines and allows the separation and identification of the amines histamine, tyramine, putrescine, and phenylethylamine using thin-layer chromatography. The method was successfully applied to several BA-producer bacterial strains. This method constitutes a simple solution to the previous reports describing false-positive reactions in routine screening procedures generally involving the use of a differential medium containing a pH indicator.

The carbon source in the culture media modulates the cardiotoxic effects of doxorubicin on human stem cell-derived cardiomyocytes

2020 ◽  
Vol 105 ◽  
pp. 106815
Author(s):  
Carlos A. Obejero-Paz ◽  
Tiffany Snow ◽  
Servane Lachize ◽  
Peter Hawryluk ◽  
Shushant Jain ◽  
...  
Keyword(s):  
Stem Cell ◽  
Carbon Source ◽  
Culture Media ◽  
Human Stem Cell

scholarly journals Effect of Sucrose as Carbon Source and Probiotic Administrations on Bacterial Population Dinamic and Water Quality in White Shrimp, Litopenaeus vannamei Culture

2007 ◽  
Vol 5 (2) ◽  
pp. 179
Author(s):  
. Sukenda ◽  
P. Hadi ◽  
E. Harris
Keyword(s):  
Water Quality ◽  
Carbon Source ◽  
Litopenaeus Vannamei ◽  
Bacterial Population ◽  
Negative Impact ◽  
Culture Media ◽  
Probiotic Bacteria ◽  
White Shrimp ◽  
Shrimp Culture ◽  
Commercial Diet

<p>Disinfection and nutrient enrichment prior stocking of  post larvae in the pond will be affected on the growth and composition of microbe.  Attention should be taken to some factors related to deterministic and stochastic factors of aquaculture environment  in order to develop microbe community.  This study was performed to determine effect of sucrose and probiotic supplementation to shrimp culture pond on water quality profile and population dynamic on shrimp culture media.  The treatments were supplementation of sucrose as carbon source, probiotic, and sucrose + probiotic into 25 L culture medium containing white shrimp, <em>Litopenaeus vannamei</em>.  Shrimp were fed commercial diet containing 30% protein by 5% body weight every day.  The result of study showed that bacterial population was increased by increasing time of shrimp rearing.  Increased of bacterial population was contrary to DO value.   Bacteria grew was heterotrop and vibrio that its intensity varied during experiment.  Supplementation of sucrose supported proliferation of bacteria including heterotrop, probiotik and vibrio groups.  Specifically, interaction between probiotic bacteria and vibrio was also found.  The presence of probiotic bacteria showed a negative impact on vibrio population.  Further, development of bacteria in general was also implicated to fluctuation of ammonia concentration in pond.</p> <p>Keywords: carbon, sucrose, probiotic, white shrimp, <em>Litopenaeus vannamei</em></p> <p> </p> <p>ABSTRAK</p> <p>Kegiatan disinfeksi dan pengkayaan nutrien sebelum penebaran PL akan mempengaruhi pola pertumbuhan dan komposisi mikroba di tambak. Hal-hal yang perlu diperhatikan dalam pengembangan komunitas mikroba adalah faktor-faktor <em>deterministic</em> dan <em>sthocastic</em> masing-masing lingkungan budidaya. Penelitian ini dilakukan untuk mengetahui pengaruh pemberian bahan berkarbon (sukrosa) dan probiotik di tambak terhadap profil kualitas air serta dinamika populasi pada perairan budidaya. Pada penelitian ini dilakukan penambahan sumber karbon (sukrosa), penambahan probiotik dan penambahan sukrosa + probiotik pada masing-masing wadah yang berisi 25 liter air dan udang Vanamei, <em>Litopenaeus vannamei</em>. Pakan yang diberikan berupa pellet komersial dengan kadar protein 30% setiap hari sebanyak 5% dari biomassa awal. Dari hasil penelitian ini diketahui bahwa populasi bakteri pada media budidaya meningkat seiring dengan bertambahnya waktu pemeliharaan. Peningkatan jumlah populasi bakteri ini diikuti oleh semakin menurunnya nilai DO secara umum. Selain bakteri heterohof, tumbuh juga bakteri golongan <em>Vibrio</em> dengan persentase kemunculan yang berbeda pada setiap perlakuan. Penambahan sukrosa dalam media budidaya mendukung proliferasi bakteri secara umum, heterotrof, probiotik dan golongan <em>Vibrio</em>. Secara spesifik, timbul juga interaksi antara bakteri probiotik dengan bakteri <em>Vibrio</em>. Tumbuhnya bakteri probiotik berimplikasi negatif terhadap populasi <em>V</em><em>i</em><em>brio</em>. Selain itu pertumbuhan bakteri secara umum juga berimplikasi terhadap fluktuasi kadar amonia perairan.</p> <p>Kata kunci : karbon, sukrosa, probiotik, udang vaname, <em>Litopenaeus vannamei</em></p>

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