- All Journals
- Al-Qadisiyah University
- Basrah University
- Kirkuk University
- Mosul University
- The Iraqi Borad for Medical Specialization
- University of Anbar
- University of Technology
- Al Mustafa University
- Al-Zahraa University for Women
- Alnoor University
- Kunooz University
- Misan University
- Ninevah University
- Tikrit University
- University of Al-Hamdaniya
- University of Kerbala
Effect of different concentrations of nitrate andphosphate on Geosmin and 2-Methylisoborneol production by some species of cyanobacteria | ||
| journal of al-qadisiyah for pure science(quarterly) | ||
| Article 1, Volume 15, Issue 4, 2015, Pages 10-26 PDF (0 K) | ||
| Author | ||
| ad M. Alkam | ||
| Abstract | ||
| This study is considered the first of its kind in Iraq, It deals with compounds that never had been studied in Iraq called taste and odour compounds, mostfrequent were geosmin and 2-MIB. Two species were identified as producers for taste and odour compounds, the first was Phormidium retzii produced geosmin and Microcoleus vaginatus produced 2-MIB which were recorded for the first time in the world as a producer. The headspace solid phase microextraction method was used to extract these two compounds from aqueous solution, which were used for the first time in Iraq. Four concentrations of nitrate and phosphate were used (97, 350, 861 and 1500 µgNO3--N/L) and(12, 40, 400 and 870 µgPO4--P/L), for observing its effect upon the production of geosmin and 2-MIB by two cyanobacterial species.Themaximal productionofgeosmin was 281.38 ng/l occurred at 861µg NO3-N/L, whereas the higher production of 2-MIB was 296 ng/l occurred at the same concentration in the late of logarithmic phase. The high concentration of nitrate (1500 µgNO3--N/L) leaded to suppressed geosmin and 2-MIB productions.Themaximal productionofgeosmin was 132.2 ng/l occurred at 870µg PO4-P/L, whereas the higher production of 2-MIB was 167.2 ng/l occurred at the same concentration in the late logarithmic phase. | ||
|
Statistics Article View: 78 PDF Download: 57 |
||