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<p>Hydroxy fatty acids (HFAs) have high viscosity and reactivity, making them suitable for various industrial applications such as resin, wax, nylon, plastic, lubricants, and cosmetics. The conventional source of HFAs is castor (<i>Ricinus communis</i>) seed oil but it contains toxic ricin. <i>Physaria</i> and <i>Paysonia</i> are regarded as potential new sources of HFAs. Within the <i>Brassicaceae</i> family, <i>Physaria</i> and <i>Paysonia</i> contain HFAs in seeds. In this study, HFAs content was analyzed in <i>Physaria</i> and <i>Paysonia</i> seeds obtained from USDA germplasm center. Gas chromatography was implemented to analyze fatty acid composition with three repetitions for 168 <i>Physaria</i> and 18 <i>Paysonia</i> accessions. A large amount of 20:1OH was identified in <i>Physaria.</i> The HFAs content in <i>Physaria</i> range from 40.1 to 80.6%, with <i>Physaria lindheimeri</i> showing the highest HFAs content at 80.6%. On the other hand, HFA contents of <i>Paysonia</i> were 33.6% ~ 52.5%, with different types of HFAs depending on the <i>Paysonia</i> species. <i>P. densipila, P. lescurii,</i> and <i>P. stonensis</i> showed the high contents of 18:1OH and 18:2OH in seeds. <i>P. grandiflora</i> and <i>P. lasiocarpa</i> have higher levels of 20:1OH, while <i>P. auriculata</i> produces high 20:2OH. Our results suggest that the two genera may differ in aspects of their HFA biosynthesis.</p>

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Hydroxy fatty acid analysis in seeds of Physaria and Paysonia species

  • 期刊论文

  • 发表日期：

    2025年6月13日

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  • Je-Hyeong Hong,
  • Mid-Eum Park,
  • Byeong-Cheol Oh,
  • Hyun Uk Kim

摘要

Hydroxy fatty acids (HFAs) have high viscosity and reactivity, making them suitable for various industrial applications such as resin, wax, nylon, plastic, lubricants, and cosmetics. The conventional source of HFAs is castor (Ricinus communis) seed oil but it contains toxic ricin. Physaria and Paysonia are regarded as potential new sources of HFAs. Within the Brassicaceae family, Physaria and Paysonia contain HFAs in seeds. In this study, HFAs content was analyzed in Physaria and Paysonia seeds obtained from USDA germplasm center. Gas chromatography was implemented to analyze fatty acid composition with three repetitions for 168 Physaria and 18 Paysonia accessions. A large amount of 20:1OH was identified in Physaria. The HFAs content in Physaria range from 40.1 to 80.6%, with Physaria lindheimeri showing the highest HFAs content at 80.6%. On the other hand, HFA contents of Paysonia were 33.6% ~ 52.5%, with different types of HFAs depending on the Paysonia species. P. densipila, P. lescurii, and P. stonensis showed the high contents of 18:1OH and 18:2OH in seeds. P. grandiflora and P. lasiocarpa have higher levels of 20:1OH, while P. auriculata produces high 20:2OH. Our results suggest that the two genera may differ in aspects of their HFA biosynthesis.