scholarly journals Nonmarine Crenarchaeol in Nevada Hot Springs

2004 ◽  
Vol 70 (9) ◽  
pp. 5229-5237 ◽  
Author(s):  
A. Pearson ◽  
Z. Huang ◽  
A. E. Ingalls ◽  
C. S. Romanek ◽  
J. Wiegel ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
High Performance ◽  
Hot Springs ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Membrane Lipids ◽  
Marine Species ◽  
Gas Chromatography Mass Spectrometry ◽  
Rrna Gene ◽  
Chromatography Mass Spectrometry ◽  
Group I

ABSTRACT Glycerol dialkyl glycerol tetraethers (GDGTs) are core membrane lipids of the Crenarchaeota. The structurally unusual GDGT crenarchaeol has been proposed as a taxonomically specific biomarker for the marine planktonic group I archaea. It is found ubiquitously in the marine water column and in sediments. In this work, samples of microbial community biomass were obtained from several alkaline and neutral-pH hot springs in Nevada, United States. Lipid extracts of these samples were analyzed by high-performance liquid chromatography-mass spectrometry and by gas chromatography-mass spectrometry. Each sample contained GDGTs, and among these compounds was crenarchaeol. The distribution of archaeal lipids in Nevada hot springs did not appear to correlate with temperature, as has been observed in the marine environment. Instead, a significant correlation with the concentration of bicarbonate was observed. Archaeal DNA was analyzed by denaturing gradient gel electrophoresis. All samples contained 16S rRNA gene sequences which were more strongly related to thermophilic crenarchaeota than to Cenarchaeum symbiosum, a marine nonthermophilic crenarchaeon. The occurrence of crenarchaeol in environments containing sequences affiliated with thermophilic crenarchaeota suggests a wide phenotypic distribution of this compound. The results also indicate that crenarchaeol can no longer be considered an exclusive biomarker for marine species.

Identification of Bioactive Phytocomponents of Hydroalcoholic Extract of Enhalus acoroides by Gas Chromatography- Mass Spectrometry Analysis

2021 ◽  
pp. 6511-6515
Author(s):  
S. Navaith Ahmed ◽  
P. Kalaivani ◽  
P. Amudha ◽  
B. Usharani
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Biological Activities ◽  
Marine Species ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Hydroalcoholic Extract ◽  
Spectrometry Analysis ◽  
Enhalus Acoroides ◽  
Chromatography Mass Spectrometry

Sea grass are good source of potent drug which has medicinal properties and able to cure human disease. One such marine plant is the Enhalus acoroides which belong to hydrocharitaeceae family. This marine species are widely distributed in the tropics of Indian and western Pacific Ocean and the species were collected from Ramanathapuram district for further process. This study reveals about the bioactive components present in Enhalus acoroides and identified its biological activity by Gas chromatography Mass spectrometry analysis using hydroalcoholic extract. The compounds present in Enhalus acoroides are Benzoic acid, 2- methyl 7- oxa bicyclol heptanes, 1, 3 Nonadiene, silane, ethoxytriethyl. Biological activities of the compounds present in the sample include antioxidant, hypocholesterolemic, antihypertensive, anti-inflammatory, anti-microbial, antiviral and anti-hepatotoxic effect.

Sign in / Sign up

Export Citation Format

Share Document