Skip to main content

Thermophilic Bacteria: Novel Polymers for Biotechnological Applications | Chapter 01 | Advances and Trends in Biotechnology and Genetics Vol. 3

Aims: We analyzed thermotolerant bacterial isolates of thermophiles from various regions in South East coasts of India. They were analyzed for Fatty Acid Methyl Ester (FAME) for identification and classification.

Study Design: A total of forty three (9.6%) thermotolerant bacterial isolates of thermophiles were secluded out of 444 isolates obtained from water samples from the Adyar River, Marina coast, Muttu Kadu Backwaters, Kovalam coast (India) and a prawn hatchery. In addition, a novel thermotolerant Gram positive Bacillus type bacterium from the pelletized feed of fish was examined. A total of 18 thermotolerant bacteria were analyzed for Fatty Acid Methyl Ester (FAME).

Results: Amongst 134 isolates that grew on E. coli FAGI agar, 23 (17%) were thermotolerant when tested at 15 psi for 30 min. Of the 72 isolates that grew on Staphylococcus Baird Parker agar 10 (13%) were thermotolerant, whilst among the 128 isolates that grew on Salmonella agar ÖNÖZ 10 (8%) were thermotolerant. In contrast, none of the 110 isolates that grew on TCBS agar (Vibrio sp.) exhibited thermotolerance, although they were isolated from the same regions as the other bacteria. The optimal temperature for the growth of most thermophiles was 45°C, except for 9 isolates. Of the latter, 7 grew at 50°C, one at 52°C and one at 55ºC, respectively.There were some extremely thermotolerant bacterial isolates that exhibited consistency in profuse growth at 15 psi (121°C) for 30 min. Other isolates showed inconsistency in growth after autoclaving the cultures at 15 psi (121°C) for 30 min, and these bacteria showed development of endospores. Isolates of thermotolerant bacteria that grew on Staphylococcus Baird Parker agar and Salmonella agar ÖNÖZ were predominantly antibiotic resistant when compared with those bacterial isolates that grew on E. coli FAGI agar. A major 43 kDa toxin-protein as well as 15 other minor protein subunits was detected in the thermotolerant Bacillus sp. isolate. The proteins were toxic and caused mortality to goldfish Cyprin macrophthalmus. The thermotolerant bacteria were identified as B. cereus, Bacillus subtilis, B. pumilus, B. laevolacticus), B. alcalophilus, Kurthiasibirica, Geobacillus stearothermophilus, Staphylococcus schleiferi and S. gallinarum,

Conclusions: This study documents 43 thermotolerant bacterial isolates from water samples and a Bacillus-type bacterium from fish feed in Chennai region, India and these bacterial isolates offer the potential for exploitation in biotechnological applications.

Author(s) Details

Palaniappan Ramasamy
Research and Development Wing, Sree Balaji Medical College and Hospital, BIHER (Bharath University), Chromepet, Tamil Nadu, Chennai-600044, India.

Aruna Sharmili
Department of Biotechnology, Stella Mary’s College, Tamil Nadu, Chennai-600032, India.

View Books: http://bp.bookpi.org/index.php/bpi/catalog/book/111
Labels:

Comments

Post a Comment

Popular posts from this blog

Greening Regional Airports: A Vision for Carbon Neutral Infrastructure | Chapter 12 | Contemporary Perspective on Science, Technology and Research Vol. 3

 This study provides an overview of the energy demand of a regional airport, divided into individual time horizons. The electrification of aircraft systems raises the question of whether airports will be among the largest electricity consumers in our infrastructure in the future. Sustainability and especially emission reductions are significant challenges for airports that are currently being addressed. The Clean Sky 2 project GENESIS addresses the environmental sustainability of hybrid-electric 50-passenger aircraft systems in a life cycle perspective to support the development of a technology roadmap for the transition to sustainable and competitive electric aircraft systems. This article originates from the GENESIS research and describes various options for ground power supply at a regional airport. Potential solutions for airport infrastructure with a short (2030), medium (2040), and long (2050) time horizon are proposed. In addition to the environmental and conservation benefi...
Post a Comment
Read more

Risk Factors for Postpartum Psychiatric Disorders. A Review of the Literature | Chapter 8 | New Visions in Medicine and Medical Science Vol. 4

  Objective: The aim of this study was to explore the risk factors for the development of postpartum psychiatric disorders through international literature. Materials and Methods: Throughout many articles in PubMed, Google scholar and PsycInfo, a great amount of recent data was gathered to identify the disorders that are most common as well as their risk factors. Results: After childbirth, most commonly women experience postpartum depression, anxiety disorders, post-traumatic stress disorder and postpartum psychosis. All the disorders have many similar risk-factors with the main one being preexisting psychiatric disorder and many similar symptoms too. Conclusions: Women after childbirth are at risk of experience many psychiatric disorders, such as postpartum distress, postpartum post traumatic stress disorder and even more rarely postpartum psychosis. It is important to provide comprehensive support to ensure the well-being of both the mother and the infant and this will b...
Post a Comment
Read more

Alkali Element Modification of Glucose Molecules as a Method to Dissolve Cancer Cells | Chapter 12 | New Visions in Medicine and Medical Science Vol. 4

  The present study highlights about alkali element modification of glucose molecules as a method to dissolve cancer cells. The central regulation of the mechanisms governing cell proliferation has little effect on cancer cells. Cancer cells are entirely independent of the central command and divide and proliferate on their own, making it challenging to activate their response mechanism. Precisely, this is the reason why they are at risk to the health of humans and/or any biological entities. Instead of trying to reconnect the central command of the growth control mechanism to cancer cells that are already out of the range, we present a method of using the cancer cell’s own irresponsive and uncontrolled growth mechanism to their disadvantage and destroy the cancer cells. We found that this is achievable in an atomic/molecular level study of the glucose molecule, which is the primary food source used for growth and energy generation by all cells in the body, including the cancer cel...
Post a Comment
Read more