TY - JOUR AB - Fatty acid methyl esters (FAME) were produced from cow's milk (Bostaurus) butter by esterification/transesterification in the presence of methanol. The product was assayed according to the Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels (ASTM D 6751). The preparation failed to meet the specifications for flash point, free and total glycerin contents, total sulfur, and oxidation stability. Failures to meet the flash point and free/total glycerin specifications were determined to be due to interference with standard assays for these parameters by short-chain-length fatty acid esters. The oxidation stability of the butterfat FAME was improved by supplementation with a commercial antioxidant formulation. Approximately 725 ppm of antioxidant was required to meet the ASTM-specified stability value for biodiesel. This work indicates that, without further purification to reduce a slightly excessive sulfur content, fatty acid ester preparations produced from butter are unacceptable as sole components of a biodiesel fuel. However, it is possible that even without further purification a butter-based ester preparation could be mixed with biodiesel from other feedstocks to produce a blend that meets the current quality standards for biodiesel. The results presented here also illustrate some potential weaknesses in the accepted methods for biodiesel characterization when employed in the analysis of FAME preparations containing mid- and short-chain fatty acid esters. AD - ARS, Fats Oils & Anim Coprod Res Unit, Eastern Reg Res Ctr, USDA, Wyndmoor, PA 19038 USA AN - WOS:000279573900025 AU - Haas, M. J. AU - Adawi, N. AU - Berry, W. W. AU - Feldman, E. AU - Kasprzyk, S. AU - Ratigan, B. AU - Scott, K. AU - Landsburg, E. B. DA - Jul 14 DO - 10.1021/jf1003754 IS - 13 J2 - J Agr Food Chem KW - biodiesel LA - English N1 - 621jx PY - 2010 SN - 0021-8561 SP - 7680-7684 ST - Butter as a Feedstock for Biodiesel Production T2 - Journal of Agricultural and Food Chemistry TI - Butter as a Feedstock for Biodiesel Production UR - ://WOS:000279573900025 VL - 58 ID - 5512 ER -