Author
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Gamble, Gary |
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Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings Publication Acceptance Date: 1/6/2003 Publication Date: 1/10/2003 Citation: Proceedings 2003 Beltwide Cotton Conferences, National Cotton Council, Memphis, TN pp. 2574-2578 Interpretive Summary: THE PHENOMENON OF STICKY COTTON, CAUSED PRIMARILY BY THE PRESENCE OF INSECT HONEYDEW CONTAMINATION, PRESENTS A MAJOR PROBLEM FOR THE TEXTILE INDUSTRY. DETECTION OF STICKY COTTON IN A RAPID, RELIABLE, AND COST EFFECT MANNER IS THEREFORE A COMMON GOAL OF THE INDUSTRY. THE RESEARCH PRESENTED HERE DEMONSTRATES THAT BY HEATING CONTAMINTAED COTTON, VOLATILE COMPOUNDS RELEASED AS A RESULT OF HONEYDEW SUGAR DEGRADATION CAN BE MEASURED AND USED TO SCREEN COTTON FOR POTENTIAL STICKINESS. THIS WORK LAYS THE FOUNDATION FOR THE DEVELOPMENT OF A RAPID, RELIABLE, AND COST EFFECTIVE METHOD FOR THE DETECTION OF STICKY COTTON. Technical Abstract: COTTON SAMPLES EXHIBITING VARYING LEVELS OF WHITEFLY HONEYDEW CONTAMINATION WERE SUBJECTED TO 180 DEGREES C TEMPERATURES UNDER A STREAM OF AIR. HONEYDEW PRESENT ON THE COTTON UNDERWENT THERMOCHEMICAL DEGRADATION WITH CONCOMITANT PRODUCTION OF THE COMPOUND 5-HYDROXYMETHYLFURALDEHYDE (HMF). HMF IS VOLATILE AT 180 DEGREES C AND WAS COLLECTED FROM THE GAS PHASE ON AN ABSORBENT MATERIAL AND MEASURED USING GAS CHROMATOGRAPHY. RESULTS INDICATE THAT HMF PRODUCTION IS CORRELATED WITH STICKINESS LEVEL AS MEASURED BY THE STICKY COTTON THERMODETECTOR AND WITH SUGAR LEVELS AS MEASURED BY BOTH HPLC AND BY THE GLUCOSE OXIDASE ENZYME METHOD. THIS STUDY PROVIDES THE FOUNDATION FOR THE DEVELOPMENT OF A RAPID, COST EFFECTIVE, AND PORTABLE METHOD FOR THE DETECTION OF STICKY COTTON BASED ON THE RELEASE AND SUBSEQUENT MEASUREMENT OF VOLATILE COMPOUNDS. |
