sunflower-based feedstocks in nonfood applications perspectives from olefin metathesis从烯烃复分解sunflower-based原料在非食品应用中观点.pdf

Int. J. Mol. Sci. 2008, 9, 1393-1406; DOI: 10.3390/ijms9081393 OPEN ACCESS International Journal of Molecular Sciences ISSN 1422-0067 /ijms/ Review Sunflower-based Feedstocks in Nonfood Applications: Perspectives from Olefin Metathesis Bassie B. Marvey Department of Chemistry, North-West University, P/Bag X2046, Mafikeng, 2735, South Africa. Tel. +27-18-389-2527; Fax: +27-18-389-2052; E-Mail: bassie.marvey@nwu.ac.za Received: 4 Jun 2008; in revised form: 29 July 2008 / Accepted: 30 July 2008 / Published: 13 August 2008 Abstract: Sunflower (Helianthus annuus L .) oil remains under-utilised albeit one of the major seed oils produced world-wide. Moreover, the high oleic sunflower varieties make the oil attractive for applications requiring high temperature processes and those targeting the C=C double bond functionality. Herein an overview of the recent developments in olefin metathesis of sunflower-based feedstocks is presented. The improved performance of olefin metathesis catalysts leading to high turnover numbers, high selectivity and catalyst recyclability, opens new opportunities for tailoring sunflower-based feedstocks into products required for possible new niche market applications. Promising results in biofuel, biopolymers, fragrances and fine chemicals applications have been reported. Keywords: sunflower, nonfood applications, olefin metathesis.