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פותח על ידי קלירמאש פתרונות בע"מ -
Chemical-sensory characterization of dairy manure odor using headspace solid-phase microextraction and multidimensional gas chromatography mass spectrometry-olfactometry
Year:
2008
Authors :
לאור, יעל
;
.
רביד, עוזי
;
.
Volume :
58
Co-Authors:
Laor, Y., Agricultural Research Organization, Institute of Soil, Water, and Environmental Sciences, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Koziel, J.A., Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States
Cai, L., Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States
Ravid, U., Agricultural Research Organization, Institute of Plant Sciences, Newe Ya'ar Research Center, Ramat, Yishay, Israel
Facilitators :
From page:
1187
To page:
1197
(
Total pages:
11
)
Abstract:
Livestock operations are associated with emissions of odor, gases, and particulate matter. The majority of previous livestock odor studies focused on swine operations whereas relatively few relate to dairy cattle. Identifying the compounds responsible for the primary odor impact is a demanding analytical challenge because many critical odor components are frequently present at very low concentrations within a complex matrix of numerous insignificant volatiles. The objective of this study was to describe a chemical-sensory profile of dairy manure odor using headspace solid-phase microextraction (HS-SPME) and multidimensional gas chromatography-mass spectrometry-olfactometry (MDGC-MS-O). Two analytical approaches were used: (1) HS-SPME time-series extractions (from seconds up to 20 hr) followed by gas chromatography-mass spectrometry-olfactometry (GC-MS-O) analyses, and (2) relatively short HS-SPME extractions (30 min) followed by MDGC-MS-O analyses on selected chromatogram heart-cuts. Dairy manure was collected at research dairy farms in the United State and Israel. Volatile organic compounds (VOCs) resolved from multiple analyses includes sulfur-containing compounds, volatile fatty acids, ketones, esters, and phenol/indole derivatives. A total of 86 potential odorants were identified. Of them, 17 compounds were detected by the human nose only. A greater number of VOCs and odorous compounds were detected, as well as higher mass loading, on solid-phase microextraction (SPME) fibers observed for longer extractions with SPME. However, besides sulfur-containing compounds, other selected compounds showed no apparent competition and displacement on the SPME fiber. The use of MDGC-MS-O increased chromatographic resolution even at relatively short extractions and revealed 22 additional odorants in one of the regions of the chromatogram. The two analytical approaches were found to be parallel to some extent whereas MDGC-MS-O can also be considered as a complementary approach by resolving more detailed chemical-sensory odor profiles. Copyright 2008 Air & Waste Managemet Association.
Note:
Related Files :
Agriculture
Biodegradation
chromatography
dairy cattle
fatty acids
Waste Management
עוד תגיות
תוכן קשור
More details
DOI :
10.3155/1047-3289.58.9.1187
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר מתוך כינוס
;
.
Language:
אנגלית
Editors' remarks:
ID:
22703
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:53
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Scientific Publication
Chemical-sensory characterization of dairy manure odor using headspace solid-phase microextraction and multidimensional gas chromatography mass spectrometry-olfactometry
58
Laor, Y., Agricultural Research Organization, Institute of Soil, Water, and Environmental Sciences, Newe Ya'ar Research Center, P.O. Box 1021, Ramat Yishay 30095, Israel
Koziel, J.A., Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States
Cai, L., Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA, United States
Ravid, U., Agricultural Research Organization, Institute of Plant Sciences, Newe Ya'ar Research Center, Ramat, Yishay, Israel
Chemical-sensory characterization of dairy manure odor using headspace solid-phase microextraction and multidimensional gas chromatography mass spectrometry-olfactometry
Livestock operations are associated with emissions of odor, gases, and particulate matter. The majority of previous livestock odor studies focused on swine operations whereas relatively few relate to dairy cattle. Identifying the compounds responsible for the primary odor impact is a demanding analytical challenge because many critical odor components are frequently present at very low concentrations within a complex matrix of numerous insignificant volatiles. The objective of this study was to describe a chemical-sensory profile of dairy manure odor using headspace solid-phase microextraction (HS-SPME) and multidimensional gas chromatography-mass spectrometry-olfactometry (MDGC-MS-O). Two analytical approaches were used: (1) HS-SPME time-series extractions (from seconds up to 20 hr) followed by gas chromatography-mass spectrometry-olfactometry (GC-MS-O) analyses, and (2) relatively short HS-SPME extractions (30 min) followed by MDGC-MS-O analyses on selected chromatogram heart-cuts. Dairy manure was collected at research dairy farms in the United State and Israel. Volatile organic compounds (VOCs) resolved from multiple analyses includes sulfur-containing compounds, volatile fatty acids, ketones, esters, and phenol/indole derivatives. A total of 86 potential odorants were identified. Of them, 17 compounds were detected by the human nose only. A greater number of VOCs and odorous compounds were detected, as well as higher mass loading, on solid-phase microextraction (SPME) fibers observed for longer extractions with SPME. However, besides sulfur-containing compounds, other selected compounds showed no apparent competition and displacement on the SPME fiber. The use of MDGC-MS-O increased chromatographic resolution even at relatively short extractions and revealed 22 additional odorants in one of the regions of the chromatogram. The two analytical approaches were found to be parallel to some extent whereas MDGC-MS-O can also be considered as a complementary approach by resolving more detailed chemical-sensory odor profiles. Copyright 2008 Air & Waste Managemet Association.
Scientific Publication
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