Modeling the Oleic Acid Content in Sunflower Oil

Abstract

Knowledge of the effects of temperature and geographic variables on the oleic acid content of sunflower (Helianthus annuus L.) oil allows us to predict the type of oil that will be produced in a particular area. This study was designed to establish a simple empirical model, which uses available variables of previously established effects, to estimate the final oleic acid composition of sunflower oil. Over two growing seasons, sunflower seeds were collected from Spain's main producing areas, and the oleic acid concentration of oil extracted from these samples was analytically determined. The effects of two types of variables (geographical position and temperature) on oil oleic acid content were determined according to three models based on the input variables: latitude, longitude, and altitude (Model I); mean minimum and maximum temperatures during the phenological stages of sunflower seed development and maturation (Model II); and a combination of both types of data (Model III). Through stepwise regression, it was established that best results were obtained using the temperature model (Model II) and the variables’ mean minimum development and mean minimum and maximum maturation temperatures (r2 = 0.99, P < 0.001, n = 88). Of the three variables included in this model, the mean minimum maturation temperature provided the closest estimate of percentage oleic acid content. This regression model was statistically validated and is proposed as a method for crop managers to estimate oleic acid content based on local temperatures.

Yield, Oil Content, and Composition of Sunflower Grown at Multiple Locations in Mississippi

“…The increase in oleic acid from north to south latitude and the corresponding reverse trend in linoleic acid has been reported by Robertson et al (1978) The same authors found that latitude had limited effect on saturated fatty acid concentration in sunflower oil. Similar results on the effect of climatic conditions and latitude on linoleic acid were reported by Lajara et al (1990) Sobrino et al (2003) developed models to explain and predict oleic acid concentration in sunflower oil as a function of geographic and climatic conditions. They reported temperature during development and maturation of sunflower achenes is one of the most important factors for production of oleic acid.…”

“…The fatty acid composition of vegetable oils influences their functional and nutritional properties (Warner et al, 2003; Burton et al, 2004) and determines their uses. The fatty acid composition of sunflower oil depends on genetic and environmental conditions (Robertson et al, 1978; Lajara et al, 1990; Miller and Vick, 1999; Sobrino et al, 2003). Sunflower seed contain up to 90% unsaturated fatty acids (combined oleic and linoleic), and approximately 10% saturated fatty acids (palmitic and stearic) (Steer and Seiler, 1990).…”

Oil Content and Saturated Fatty Acids in Sunflower as a Function of Planting Date, Nitrogen Rate, and Hybrid

“…Reducing the TSFA in sunflower oil would improve its dietary properties, would result in higher oxidative stability, and may benefit both consumers and producers (Miller and Vick, 1999; Flagella et al, 2002). Previous research has demonstrated that FA composition of sunflower oil may be affected by genetic (Miller and Vick, 1999; Burton et al, 2004; Izquierdo and Aguirrezábal, 2008; Skoric et al, 2008) and environmental conditions (Robertson et al, 1978; Lajara et al, 1990; Steer and Seiler, 1990; Flagella et al, 2002; Sobrino et al, 2003; Izquierdo and Aguirrezábal, 2008; Zheljazkov et al, 2008).…”

Modeling the Response of Fatty Acid Composition to Temperature in a Traditional Sunflower Hybrid

“…T he environment affects fatty acid composition in the oil of traditional sunflower hybrids. The increase in the oleic/linoleic acid ratio with increasing temperature during grain filling has been widely reported (Canvin, 1965; Nagao and Yamazaki, 1984; Sobrino et al, 2003). Prediction of fatty acid composition using temperature at different periods of grain filling has been attempted in a few studies.…”