pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-16-1-12 Articles Effect of Chilling Injury on Windrowed Peanuts J. A. Singleton *, 2 and H. E. Pattee 2 Research Chemists, USDA, ARS, North Carolina State University, Box 7625, Raleigh, NC 27695–7625

Paper No. 10320 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh, NC. 27695–7601. The use of trade names in this publication does not imply endorsement by the North Carolina Research Service nor the United States Department of Agricultural of the products named, nor criticism of similar ones not mentioned.

 *Corresponding Author. 1 1989 16 1 51 54 15 5 1989 American Peanut Research and Education Society 1989 American Peanut Research and Education Society Abstract

Quantitative gas chromatographic analysis of peanut volatiles showed ethanol concentrations in chilled seed with diameters 5.95 and 6.75 mm to be higher than in chilled seed with diameters between 6.75 and 7.94 mm. Normal ethanol concentrations were observed for both large and small seed in the control. Specific conductivity of leachates from the small diameter chilled seed was two to three times higher than the control. Only small differences were observed in the specific conductivity of leachates from the large diameter seed for the chilled treatment and the control. Results suggest that, when exposed to chilling temperatures, respiration in the small seed changed from an aerobic to an anaerobic process. The changes may be caused by modifications in the cell membrane structures of relatively immature seed as a result of exposure to chilling temperatures, with less effect in larger, more mature seed.

 Key Words Chilling injury; , conductivity; , ethanol production; , windrow; , temperature