The invention relates to a sunflower seed, comprising a sunflower oil having an increased stearic acid content as compared to wild type seeds, obtainable by treating parent seeds with a mutagenic agent during a period of time and in a conceatration sufficient to induce one or more mutations in the genetic trait involved in stearic acid biosynthesis resulting in an incresed production of stearic acid, germinating the treated seeds and culturing progeny plants therefrom, collecting and analyzing progeny seeds, selecting seeds that have acquired the desirable genetic trait and optionally repeating the cycle of germination, culturing and collection of seeds. Preferably the seeds comprise an oil having a stearic acid content of between 19.1 and 35% by weight related to the total amount of fatty acids in the oil, and are obtainable by treating the parent seeds with an alkylating agent, such as ethyl methane sulfonate in water, or with sodium azide in water. The invention further relates to sunflower oil obtainable by extracting the sunflower seeds, to a method for preparing sunflower seeds having an incresed stearic acid content as compared to wild type seeds, a method for preparing a sunflower oil having an increased stearic acid content sunflower plants produced from the seeds and the use of the sunflower oil in various products.

A invenção relaciona-se a uma semente de sunflower, compreendendo um óleo de sunflower que tem um índice ácido stearic aumentado em comparação ao tipo selvagem sementes, obteníveis tratando sementes do pai com um agente mutagenic durante um período de tempo e em um conceatration suficiente induzir um ou o mais mutations no traço genetic envolvido no biosynthesis do ácido stearic tendo por resultado incresed a produção do ácido stearic, germinating as sementes tratadas e cultivando plantas do progeny therefrom, coletando e analisando as sementes do progeny, selecionando as sementes que adquiriram o traço genetic desejável e opcionalmente repetir o ciclo do germination, de cultivar e de coleção das sementes. Preferivelmente as sementes compreendem um óleo que tem um índice ácido stearic entre de 19.1 e de 35% pelo peso relacionado à quantidade total de ácidos fatty no óleo, e são obteníveis tratando as sementes do pai com um agente alkylating, tal como o sulfonate ethyl do methane na água, ou com o azide do sodium na água. A invenção mais adicional relaciona-se ao óleo de sunflower obtenível extraindo as sementes de sunflower, a um método para preparar as sementes de sunflower que têm incresed o índice ácido stearic em comparação ao tipo selvagem sementes, um método para preparar um óleo de sunflower que tem as plantas stearic aumentadas de um sunflower do índice ácido produzidas das sementes e do uso do óleo de sunflower em vários produtos.

 
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