Isubgol as an Alternative Gelling Agent for Microbial Culture Media

1997 ◽  
Vol 6 (2) ◽  
pp. 129-131 ◽  
Author(s):  
Neeru Jain ◽  
Shruti Gupta ◽  
Shashi B. Babbar
Keyword(s):  
Culture Media ◽  
Gelling Agent ◽  
Microbial Culture ◽  
Alternative Gelling Agent

Low Acyl Gellan Gum as a Gelling Agent in Medium of Saccharomyces Yeasts

2018 ◽  
Vol 14 (4) ◽  
Author(s):  
Liguo Zhang ◽  
Jinhua Du ◽  
Yang Jiang
Keyword(s):  
Culture Media ◽  
Gellan Gum ◽  
Gelling Agent ◽  
Porous Structures ◽  
Colony Diameter ◽  
Microbiological Culture ◽  
Gelling Temperature ◽  
Plating Method ◽  
Alternative Gelling Agent ◽  
Saccharomyces Yeasts

Abstract Commercial agar used in microbiological culture has a disadvantage of impurity and opacity. This work aimed to provide an alternative gelling agent to agar and the function of low acyl gellan gum in microbiological culture media was studied. The results showed the texture and water activity of GYGs (glucose-YNB medium containing low acyl gellan gum at different concentrations of 0.3%, 0.6%, 0.9%, 1.2%, 1.5%) were suitable for cultivation of Saccharomyces yeasts. The gelling temperature of GYGs was enhanced with the increased concentration of low acyl gellan gum, while clarity of medium and colony diameter decreased. Scanning electron microscope showed that GYG09 (glucose-YNB medium containing 0.9% low acyl gellan gum) possessed homogeneous porous structures, which was superior to GYA20 with respect to higher clarity and lower dosage of gelling agent when surface plating method was used; however, GYG09 was not suitable for pour plating method.

Guar gum: a cheap substitute for agar in microbial culture media

2005 ◽  
Vol 41 (4) ◽  
pp. 345-349 ◽  
Author(s):  
R. Jain ◽  
V. Anjaiah ◽  
S.B. Babbar
Keyword(s):  
Guar Gum ◽  
Culture Media ◽  
Microbial Culture

Evaluation of guar gum derivatives as gelling agents for microbial culture media

2012 ◽  
Vol 28 (5) ◽  
pp. 2279-2285 ◽  
Author(s):  
Waikhom Gangotri ◽  
Ruchi Jain-Raina ◽  
Shashi B. Babbar
Keyword(s):  
Guar Gum ◽  
Culture Media ◽  
Microbial Culture ◽  
Gelling Agents

scholarly journals Vessel Volume, Gelling Agent, and Basal Salts Affect pH and Gel Strength of Autoclave Tissue Culture Media

HortScience ◽  
1994 ◽  
Vol 29 (6) ◽  
pp. 683-685 ◽  
Author(s):  
Hazel Y. Wetzstein ◽  
Choongsik Kim ◽  
Harry E. Sommer
Keyword(s):  
Tissue Culture ◽  
Culture Media ◽  
Basal Medium ◽  
Gel Strength ◽  
Gelling Agent ◽  
Mean Values ◽  
Gelling Agents ◽  
Tissue Culture Media ◽  
Vessel Volume ◽  
Basal Salts

Effects of autoclaving volume, gelling agent (Bactoagar, Gel-gro, Phytagar), and basal salts [Murashige and Skoog (MS); Woody Plant Medium (WPM); Gamborg B5 (GB)] on gel strength and pH of tissue culture media were tested. Gel strength was significantly affected by gelling agent and basal medium. MS media were generally softer than comparable WPM or GB media. As the vessel volume during autoclaving decreased, gel strength significantly decreased with Phytagar and Bactoagar gelling agents; Gel-gro had greater gel strength at the intermediate volume of medium autoclave. In all cases, autoclaving resulted in a pH decrease of 0.2 to 0.5 pH units. Lower pH values were associated with softer gels. The type of gelling agent did not greatly affect the postautoclave pH; mean values among gelling agents were within 0.05 pH units. Postautoclave pH of MS medium was lower than that of WPM or GB. This study verifies the need to observe uniform sterilization protocols to maintain consistency in the chemical and physical properties of media.

scholarly journals Influence of Additional Nutrients and Gelling Agents on in Vitro Response of Selected Indica Rice Varieties

2019 ◽  
Vol 11 (4) ◽  
pp. 26
Author(s):  
Sai Krishna Repalli ◽  
Chaitanya Kumar Geda ◽  
N. S. N. Pradhan ◽  
G. J. N. Rao
Keyword(s):  
Culture Media ◽  
Indica Rice ◽  
Casein Hydrolysate ◽  
Gelling Agent ◽  
Regeneration Potential ◽  
Rice Varieties ◽  
Gelling Agents ◽  
Profound Influence ◽  
In Vitro Response

Indica rice varieties are recalcitrant to culture and hence the culture media should be supplemented with additional nutrients to provide energy and osmotic potential for best in vitro response. Combinations of plant growth regulators have profound influence on callus induction and regeneration potential of the selected genotypes. In addition, concentration and choice of gelling agents also have their effect on regeneration of indica rice varieties. Impact of L-Proline, and Casein Hydrolysate on tissue culture response of selected indica rice varieties is discussed and the best choice of gelling agent and their in vitro response is elucidated.

scholarly journals ISOLATION AND CULTURE OF Celosia cristata L. CELL SUSPENSION PROTOPLASTS

2003 ◽  
Vol 9 (1) ◽  
pp. 1-6
Author(s):  
Retno Mastuti ◽  
Hiroshi Miyake ◽  
Takeshi Taniguchi ◽  
Yoji Takeoka
Keyword(s):  
Plant Regeneration ◽  
Cell Suspension ◽  
Protoplast Culture ◽  
Somatic Hybridization ◽  
Culture Media ◽  
Developmental Competence ◽  
Gelling Agent ◽  
Ms Medium ◽  
L Cell ◽  
Celosia Cristata

Developmental competence of Celosia cristata L. cell suspension-derived protoplasts was investigated. The protoplasts were isolated from 3- to 9-d old cultures in enzyme solution containing 2 percent (w/v) Cellulase YC and 0.5 percent (w/v) Macerozyme R-10 which was dissolved in washing solution (0.4 M mannitol and 10 mM CaCl2) at pH 5.6 for 3 hours. The highest number of viable protoplasts was released from 5-d old culture of a homogenous cell suspension. Subsequently, three kinds of protoplast culture media were simultaneously examined with four kinds of concentration of gelling agent. Culturing the protoplasts on KM8p medium solidified with 1.2 percent agarose significantly enhanced plating efficiency as well as microcolony formation. Afterwards, the microcalli actively proliferated into friable watery callus when they were subcultured on MS medium supplemented with 0.3 mg/l 2,4-D and 1.0 mg/l kinetin. Although the plant regeneration from the protoplasts-derived calli has not yet been obtained, the reproducible developmental step from protoplasts to callus in this study may facilitate the establishment of somatic hybridization using C. cristata as one parent.

scholarly journals Semen bacterial contamination: Antibiotics susceptibility pattern and standard sperm parameters in men of Birjand, 2017

2020 ◽  
pp. 172-181
Keyword(s):  
Urinary Tract ◽  
Bacterial Contamination ◽  
Culture Media ◽  
Sperm Count ◽  
Semen Analysis ◽  
Sperm Parameters ◽  
Diffusion Method ◽  
Microbial Culture ◽  
Microbiological Methods ◽  
Tract Infections

Background and Aim: Urinary tract infections can be one of the most important causes of infertility in men. Identification of semen bacterial contamination and using of appropriate antibiotic treatment can cause to improvement sperm parameters. The aim of this study was to evaluate the frequency of bacterial contamination of semen and its effect on standard sperm parameters. Materials and Methods: In this descriptive-analytical study, the semen analysis of 40 men referring to Birjand laboratories was performed by using the CASA model spermogram device. The Eosin-Nigrosin staining was used to evaluate of sperm viability. After semen samples were cultured on microbial culture media, bacterial contamination was assessed by using conventional microbiological methods. The determination of antibiotic susceptibility of bacterial isolates was performed by the disk diffusion method. Results: In the present study, 30% of semen 12 samples were detected with bacterial contamination, the most frequent of which was related to Escherichia coli (41.7%). Statistical analysis showed that there was a significant relationship between bacterial contamination of semen and history of urinary tract infection (UTI) (P=0.001). There was a significant decrease in the motility, viability and sperm count in subjects with bacterial semen contamination (P<0.05). Nitrofurantoin, Gentamicin and third-generation of Cephalosporins were reported as the most effective treatment options for reducing bacterial contamination in semen. Conclusion: The bacterial contamination of semen can significantly reduce the motility, viability and sperm count. Due to the high prevalence of bacterial contamination in semen and its significant association with sperm factors, the microbial screening of infertile couples without clinical symptoms is essential. Key Words: Antibiotic Resistance; Bacterial Contamination; Infertility; Semen fluid; Sperm

Sign in / Sign up

Export Citation Format

Share Document