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2741272 
Journal Article 
Effects of various synthetic sucrose esters on weed seed germination and crop growth: Structure-activity and dose-response relationships 
Peterson, JK; Harrison H F, , JR; Chortyk, OT 
1997 
Yes 
Journal of Agricultural and Food Chemistry
ISSN: 0021-8561
EISSN: 1520-5118 
BIOSIS/98/04407 
45 
12 
4833-4837 
English 
BIOSIS COPYRIGHT: BIOL ABS. Twelve synthetic sucrose ester (SE) products with C7-C10 chain lengths and various degrees of esterification (DE) were tested for their influence on seed germination of prosomillet and velvetleaf and on growth of broccoli and bell pepper plants. At 100 ppm most SE caused virtually total inhibition of germination; at lower concentrations dose-response and structure-activity relationships were apparent. Sucrose esters with seven and eight carbon acyl groups were most effective, and activities decreased for nonanoyl and decanoyl esters, respectively. With respect to DE, products high in di-, tri-, and tetraacyl esters were most active. Increased DE caused decreasing activities; however, the lowest DE (higher in monoacyl esters) was also less active. The biologically most active SE product was characterized by mass spectrometric techniques. The product consisted of 7.5% monoheptanoyl and 20.7% di-, 33.5% tri-, 23.6% tetra-, 7.7% penta-, and 1.3% hexaheptanoyl esters. Struc