Submitted to: Annual Meeting and Expo of the American Oil Chemists' Society
Publication Type: Abstract Only
Publication Acceptance Date: March 1, 2006
Publication Date: April 30, 2006
Citation: Carrao-Panizzi, M.C., Rennick, K.A., Erhan, S.Z. 2006. Phytosterol concentration of soybean cultivars sowed in different locations of Brazil [abstract]. 97th American Oil Chemists' Society Annual Meeting and Expo. p. 90. Technical Abstract: Phytosterols are known to lower total and LDL-cholesterol in individuals with elevated blood cholesterol levels. Phytosterols have been approved for incorporation into foods. Information on phytosterols composition of soybean cultivars and environmental effects on their content are important for processing industries. Soybean is produced in a wide range of environmental conditions (5 deg N to 32 deg S latitude), and the differences of sowing locations may affect its chemical composition. This study was conducted to determine phytosterol composition in Brazilian soybean cultivars sowed in different locations of the production region. Phytosterols were determined in the laboratory using gas chromatography. Results indicated that in the South Region (average of three locations), cv. BRS 134 presented lower content of total phytosterols (139.14mg/100g) when compared with cvs. IAS 5 and Embrapa 59 (224.24mg/100 and 219.88mg/100g, respectively). Among locations Palotina (24 deg 17 Latitude S) and Campos Novos (27 deg 24 Latitude S) favored formation of phytosterols, while a reduced level of these compounds was observed in Pato Branco (26 deg 13 Latitude S). At the Northeast Region, cv. Cristalina showed higher content of total phytosterols (203.85mg/100g), particularly in Condomínio Boa Esperança (7 deg 13 Latitude S) which location favored concentration of these compounds. At the Central Region, Uberlandia (18 deg 55 Latitude S) was the site with higher concentrations of phytosterol (250.09 mg/100g average), and cv. BRS Gralha presented the highest value for all phytosterols (307.50 mg/100g); BRS Piraíba presented high concentrations of campestrol (49.45 mg/100g), while cv. BRS Aurora had higher concentrations of beta-sistosterols (148.30mg/100g). Embrapa 48 sowed in six locations of the South Region showed reduced concentrations of all phytosterols in Guarapuava (25 deg 23 Latitude S) (63.54, 39.85, and 18.44 mg/100g for beta-sistosterol, campestrol and stigmasterol, respectively.