welan gum introduction

Welan gum is a thickening agent whose properties make it well suited to use in high temperature industrial applications and oilfield drilling muds.
Source: Biofermentation using a sugar source
Function: Thickening, suspension, thermal stability
Description: Welan gum is a specialty fermentation polysaccharide produced by fermentation of Sphingomonas sp.A key feature of this novel, water-soluble polysaccharide is its excellent stability and viscosity retention at temperatures up to 150°C (300°F).
In addition, this hydrophilic colloid thickens, suspends, and stabilizes water-based systems while imparting rheological control. The excellent functionality of welan gum in high-temperature conditions makes it suitable for industrial applications such as sealants, metalworking compounds and various industrial applications. Welan gum is stable in the presence of calcium ions, even under high pH conditions, and in solutions containing high levels of glycols.
A solution of welan gum in water is highly pseudoplastic (shear thinning). At rest and under low shear conditions it exhibits a very high viscosity. By contrast, under high shear conditions it exhibits a low viscosity. The viscosity changes immediately when the shearing conditions change, for example, when the solution comes to rest after being pumped.

welan gum introduction

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Rhamnolipid bio surfactant is an anionic surfactant

Hebei Ebio Biotechnology Co., Ltd. is a high-tech enterprise who commitments to develop biotechnology, focuses on a variety of high-level microbial polysaccharides and other biogums research and development, production and application technology development.
Rhamnolipid bio surfactant is an anionic surfactant, can significantly reduce the surface tension of water, changing the wettability of solid surface.
With emulsion, breaking, defoaming, washing, dispersion and flocculation, a variety of functions such as antistatic and lubrication.In alkaline solution also showed good solubility. And strong foaming, foam stability.
Excellent compatibility of performance, and other effects of surfactants with increasing times. Irritant to the human body, low toxicity, biodegradable quickly without residue, are environmentally friendly products.
We have more than four years of research and development company in the country's first rhamnolipid bio surfactant powder of industrial production. Welcome you factory calls, letters inquiries, we can provide appropriate samples.

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Features of welan gum

Features of welan gum
(1) Superior compatibility with other gums.
(2) Excellent water blinding capacity.
(3) High viscosity in low concentration and slow-speed of revolution.
(4) Has characteristics as pseudoplastic fluid (shear thinning), good suspending power under idle state.
(5) Stable in pH2-12, nice salt tolerance, which means it has special stability in high salinity.
(6) Has high resistance to temperature.

Features of welan gum

Specifications of Welan gum
Regular welan gum - RWG
High viscosity Welan gum

High viscosity Welan gum of Rbbio is a new type product developed by bio-technology. Compared with like products, new generation welan gum has much better features such as thickening, stabilizing, suspension, emulsification, high viscosity, salt tolerance and high temperature resistance, which can be widely used in industry and agriculture such as oil exploitation, deep well work, concrete and additive of dry-mixed mortar.

Specifications of high viscosity Welan gum
RWG-P100
RWG-P
RWG-PD
RWG-PD100
Advantage about high viscosity welan gum
Good heat stability
Higher viscosity
Much stronger suspending ability
More excellent salt tolerance and high temperature resistance performance

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Welan gum microbial production characterization and applications

Microbial exopolysaccharides are of high molecular weight, environment friendly valuable natural polymers, having applications in diverse areas such as food industry, pharmaceutical industry, cement systems and cosmetics industries. Welan gum, a microbial product holds an important place among the exopolysaccharides due to its novel properties and potential applications.
The biopolymer welan gum is synthesized by the fermentation process mainly by the Alcaligenes sp., and is composed of polymer of tetrasaccharide backbone chain containing l-mannose, l-rhamnose, d-glucose, and d-glucuronic acid. It acts as a thickening, suspending, binding, emulsifying, stabilizing and viscosifying agent. It has important commercial applications in the cement systems. This review is primarily focused on the microbial production, purification, recovery, and the characterization based on the available published literature on the welan gum. Besides this, the biosynthesis and the various process factors affecting the production as well as properties of welan gum and its various applications have also been addressed.

Welan gum 

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Biosurfactants may be involved in pathogenesis

Bio surfactants may be involved in pathogenesis due to their surface activity; however, for security and regulatory reasons, production strains should be nonpathogenic. In the above mentioned example of rhamnolipids this is not the case as Pseudomonas aeruginosa, the most common producing bacteria, is a pathogen.

A variety of methods for the screening of biosurfactant producing microbes has been developed and successfully applied. Since the 1970th there have been various trials in this field. These screenings have mostly been limited to a manageable number of samples. In recent years automation and miniaturization have led to the development of high throughput methods for screening of biosurfactant producing strains. A broad application of such methods could eventually lead to the desired upsurge of new commercially interesting strains.

Biosurfactants may be involved in pathogenesis

An efficient screening strategy is the key to success in isolating new and interesting microbes or their variants, because a large number of strains needs to be characterized. A complete strategy for screening of new biosurfactants or production strains consists of three steps: sampling, isolation of strains and investigation of strains. Theses steps will be addressed in the next paragraphs. Bioinformatical approaches like homology search are not included herein.

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welan gum has a good price

Our company products welan gum has a good price,if you need it,please contact us.
1.grade
1). oil drilling grade(petroleum grade) xanthan gum.
2). special grade

2. property:
1)high viscosity under low rotation
2) high viscosity under low concentration
3 fine moisture retention
4)peculiar stability under high salinity
5)high temperature resistance

3. specifications: 

Appearance:	white to cream color powder
Odor	mild
pH:	7.0-9.0
Bulk density:	26.25 lbs./ ft3 (500-700kg/m3)
Specific Gravity:	1.45
Particle Size:	90% pass 80 mesh
Viscosity	0.66% in Dl water by Fann 35 at 70ºF	0.66% in Dl water by Fann 35 with 1.0 spring at 185ºF
300rpm	39-49	37-47
200rpm	33-43	32-42
100rpm	29-37	28-35
6rpm	> 17	> 17
3rpm	> 16	> 16

4.storage: stored in a cool dry ventilated place
5.shelf life: 2 years at least if properly stored

6.Application:
Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of
viscosity at elevated temperatures. It is used in various industries where high molecular weight
biopolymers are useful. Welan Gums have various oilfield applications, concrete, dry-mixed mortar,petroleum industry,foundry coating, pigment suspensions, cement or concrete viscosifiers, tire sealants and paint thickeners

welan gum has a good price

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Anti-high temperature biopolymers Description

Anti-high temperature biopolymers Description
The product has the general properties of biopolymer  such as thickening, suspension, emulsifying, acid-base stability, but also have good high temperature performance, temperature tolerance up to 150 ºC, it can be used deep well drilling fluid, etc. in the high temperature environment.
Packaging & Delivery
Packing :Paper bag, net 20kg/bag
Delivery Lead Time :2 weeks
Minimum Order :200kg
Supply Ability :1000mt-2000mt/year

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welan gum description and application

welan gum Description:
Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of viscosity at elevated temperatures. Welan Gum exhibits superior temperature stability over 200° F in fresh water and low pH fluids. Welan Gum is a tan colored dry powder with a density of 26.25 lbs/ft³. Welan Gum is used in various industries where high molecular weight biopolymers are useful.

welan gum Application:
WELAN GUM biopolyer is a high efficiency, pseudoplastic viscosifier and suspension agent used in water based drilling, workover and completion fluids. Welan gum is also used in hydraulic fracturing fluids and cementing grouts, foundary coating, pigment suspensions, cement or concrete viscosifier, tire sealant and paint thickeners.

welan gum

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bio surfactant wholesale

Our company has bio surfactant wholesale
Metsulfuron-methyl is Widely applied in wheat, barley, oat and corn to control broad-leaf weed and grass.
Metsulfuron-methyl Specifications
1. It is a systemic compound with foliar and soil activity, and it works rapidly after it is takenup by the plant.
2. Its mode of action is by hnhibiting cell dividion in the shoots and roots of the plant, and it is
Biologically active at low use rates.

Metsulfuron-methyl Application:
(1) Metsulfuron-Methyl 60% WP and 60% WDG is a residual sulfonylurea compound used as a selective pre-and postemergennce herbicide for broadleaf weeds and some annual grassed.
(2) Metsulfuron-Methyl is a systemic compound with foliar and soil activity.
(3) Metsulfuron-Methyl works rapidly after it is taken up by the plant.
(4) Metsulfuron-Methyl mode of action is by hnhibiting cell dividion in the shoots and roots of the plant, and it is biologically active at low use rates

buy Bio surfactant china

Hebei Ebio Biotechnology Co., Ltd. is a high-tech enterprise who commitments to develop biotechnology, focuses on a variety of high-level microbial polysaccharides and other biogums research and development, production and application technology development. If you want to buy bio surfactant china,please contact us.

Bio surfactant

In this study, the bacterium Bacillus licheniformis has been isolated from oil reservoir; the ability of this bacterium to produce a biosurfactant was detected. Surface properties of the produced biosurfactant were confirmed by determining the emulsification power as well as surface and interfacial tension. The crude biosurfactant has been extracted from supernatant culture growth, and the yield of crude biosurfactant was about 1 g/l. Also, chemical structure of the produced biosurfactant was confirmed using FTIR analysis. Results revealed that, the emulsification power has been increased up to 96% and the surface tension decreased from 72 of distilled water to 36 mN/m after 72 h of incubation. The potential application of this bacterial species in microbial-enhanced oil recovery (MEOR) was investigated. The percent of oil recovery was 16.6% upon application in a sand pack column designed to stimulate an oil recovery. It also showed antimicrobial activity against the growth of different strains of SRB (sulfate reducing bacteria). Results revealed that a complete inhibition of SRB growth using 1.0% crude biosurfactant is achieved after 3 h.

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bio surfactant wholesale

We are bio surfactant wholesale,if you need,you can contact us.
Metsulfuron-methyl Specifications
1. It is a systemic compound with foliar and soil activity, and it works rapidly after it is takenup by the plant.
2. Its mode of action is by hnhibiting cell dividion in the shoots and roots of the plant, and it is
Biologically active at low use rates.

bio surfactant wholesale

Metsulfuron-methyl Application:
(1) Metsulfuron-Methyl 60% WP and 60% WDG is a residual sulfonylurea compound used as a selective pre-and postemergennce herbicide for broadleaf weeds and some annual grassed.
(2) Metsulfuron-Methyl is a systemic compound with foliar and soil activity.
(3) Metsulfuron-Methyl works rapidly after it is taken up by the plant.
(4) Metsulfuron-Methyl mode of action is by hnhibiting cell dividion in the shoots and roots of the plant, and it is biologically active at low use rates

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bio surfactant suppliers

We are bio surfactant suppliers,if you need cheap bio surfactant ,you can contact us.
1. Basic ingredients: Ative matter, sodioum carbonate, sodium sulfate, sodium silicate, etc. 
2. Option ingredients: Nonionic surfactant, essence, brightner, CMC, enzym, soap powder, speckle, foam booster, etc. 
3. SUNNY/ SNOW/ BEAUTY own brand offering, as well as OEM/ODM service by top 10 laundry detergent suppliers in China. 
This washing powder has a compound formulation combining a unique functional surfactant and a softening agent. These component substances substitute for the traditionally used sodium alkyl benzene sulfonate, and thus the environmental impact
Of the benzene ring in sodium alkyl benzene sulfonate is eliminated. 

Features: 
1. Good and fresh smell, flower and fruit smell
2. Hight foam, middle foam, low foam as buyers' request
3. Suitable density, let the package look good
4. Reasonable package design can save containers space, and design package as per buyers' request
5. Washing at cool, normal, warm temperature water
6. Suitable for hand and machine wash
7. Suitable for washing both in hard and soft water
8. Non-harmful to skin
9. Protecting fabrics
10. Protech both environment and health
11. High quality
12. Competitive price
13. Saving water and saving time
14. Specification as buyers' request and OEM

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bio surfactant

bio surfactant Features:
Water-soluble, small solid adsorption;
Better resistance and residual resistance factor, reduce the interfacial tension, better wet ability and reversal for oil rock surface;
A plurality of biological macromolecules can bridge to completely block the throat at the same time, so that the water flow around;
Resistance to salinity 30000mg / L, temperature stable at 120 ℃;
Lower cost, applicability, especially for the presence of the interlayer and the inner heterogeneity of the EOR in the oilfields;
Non-toxic, safety, environmental;
 
Product dosages
The dosages of product in oilfields is 0.5 to 1%

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Anti-high temperature biopolymers description

Anti-high temperature biopolymers description
The product has the general properties of biopolymer  such as thickening, suspension, emulsifying, acid-base stability, but also have good high temperature performance, temperature tolerance up to 150 ºC, it can be used deep well drilling fluid, etc. in the high temperature environment.

Anti-high temperature biopolymers

Packaging & Delivery
Packing :Paper bag, net 20kg/bag
Delivery Lead Time :2 weeks
Minimum Order :200kg
Supply Ability :1000mt-2000mt/year

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bio surfactant Performance & Features

bio surfactant Performance & Features
The product is hazard free and green in consideration of using edible vegetable oil as raw material for fermentation.
Physical purification process, without adding chemicals or taking chemical reaction.
The advantage of excellent surfactivity and quite low CMC is considered for using low usage concentration to achieve good surface effect.
The product is used widely due to its stable HLB value and good at formability, emulsification ability and wetting force.
The green product with 100% degradability.
Test result of LD50 oral toxicity >5000mg/kg and non-toxic is in compliance with WHO standard.
Has the property of fungistasis and being against aphis growth.
Has chelate ability including metal ion chelating; for certain heavy metal ions it is even stronger than EDTA.

bio surfactant

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Rhamnolipid biosurfactant is a kind of biological surfactant generated

Rhamnolipid bio surfactant is a kind of biological surfactant generated from the process of Pseudomonas metabolism
Rhamnolipid biosurfactant, the English name Rhamnolipid, is a biological metabolic substance produced by Pseudomonas, It is  a glycolipid surfactant. "Rhamnolipid" as called is not a single structure, but a mixture consist of  a variety of rhamnolipid congeners. In some reports as we have known, found that there are 28 kinds of different rhamnolipid structures (another argument for 60 kinds).  All these  have the basic characteristics and it the hydrophilic groups are typically composed of 1 to 2 molecules of rhamnose rings, hydrophobic groups from 1 to 2 molecules with different carbon chain length saturated or unsaturated fatty acid composition . We offer industrial products, products for multi-component hybrid structure.

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Bio surfactant Product Features

Bio surfactant Product Features:
Water-soluble, small solid adsorption;
Better resistance and residual resistance factor, reduce the interfacial tension, better wet ability and reversal for oil rock surface;
A plurality of biological macromolecules can bridge to completely block the throat at the same time, so that the water flow around;
Resistance to salinity 30000mg / L, temperature stable at 120 ℃;
Lower cost, applicability, especially for the presence of the interlayer and the inner heterogeneity of the EOR in the oilfields;
Non-toxic, safety, environmental;

Product dosages
The dosages of product in oilfields is 0.5 to 1%

Bio surfactant 

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Bio surfactant is a biological macromolecules

Bio surfactant is a biological macromolecules with a surface activity to be produced by microorganisms with the special conditions (such as a suitable carbon and nitrogen sources, organic nutrients, PH value and temperature, etc ) Compared with the chemical synthesis of surfactants, Bio surfactant addition to reducing the surface tension, emulsion stability and increase the role of the same foam, but also with the advantages of non-toxic, biodegradable, etc , which chemical synthetic surfactants have no
Ebio relies on well-known scientific research institutes of the technical support for oil drilling, building materials, fine chemicals and other industries with a cost-effective series of biogums products and precision services.Ebio has 180 staffs, of which 68 engineering and technical personnel. Now she has an annual production capacity of 1,000 tons of Bio Surfactant capacity and sells product both at home and abroad market, including Europe, America, Southeast Asia and other regions.

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Fritz Welan Gum is an anionic polysaccharide

Fritz Welan Gum is an anionic polysaccharide with excellent thermal stability and retention of viscosity at elevated temperatures. Fritz Welan Gum exhibits superior temperature stability over 200° F in fresh water and low pH fluids. Fritz Welan Gum is a tan colored dry powder with a density of 26.25 lbs/ft³. Fritz Welan Gum is used in various industries where high molecular weight biopolymers are useful.

Welan Gum

The flow behavior and dynamic viscoelasticity of welan gum solutions were measured with a rheogoniometer. The welan gum showed shear-thinning behavior at a concentration of 0.1%, but plastic behavior above 0.3% at 25°C. The dynamic viscoelasticity increased with increasing concentration, and was scarcely changeable with increasing temperature even at 80°C. Gelation did not occur even in a polysaccharide concentration of 1.0% at low temperature (0°C). An increase of the dynamic modulus was not observed on the addition of CaCl2 (6.8 mm). The dynamic viscoelasticity of welan gum solution was scarcely changeable in a wide range of pH from 2 to 12. The dynamic modulus was also scarcely changeable on addition of urea (4.0 m). Possible mode of intramolecular associations between the OH-4 of the d-glucosyl residue and the adjacent hemiacetal oxygen atom of the l-rhamnosyl residue, and between the methyl group of the l-rhamnosyl residue and the adjacent hemiacetal oxygen atom of the d-glucosyl residue were proposed.

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Bio surfactants are surfactants

Bio surfactant are surfactants that are produced extracellularly or as part of the cell membrane by bacteria, yeasts and fungi. Examples include Pseudomonas aeruginosa which produces rhamnolipids, Candida (formerly Torulopsis) bombicola, one of the few yeasts to produce biosurfactants, which produces high yields of sophorolipids from vegetable oils and sugars and Bacillus subtilis which produces a lipopeptide called surfactin. This review includes environmental applications of these biosurfactants for soil and water treatment. Biosurfactant applications in the environmental industries are promising due to their biodegradability, low toxicity and effectiveness in enhancing biodegradation and solubilization of low solubility compounds. However, more information is needed to be able to predict and model their behaviour. Full scale tests will be required. The role of biosurfactants in natural attenuation processes has not been determined. Very little information is available concerning the influence of soil components on the remediation process with biosurfactants. As most of the research until now has been performed with rhamnolipids, other biosurfactants need to be investigated as they may have more promising properties.

Bio surfactant

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