Stability of guayulins from Parthenium argentatum, A. Gray during post-harvesting storage for industrial exploitation

Chemical and Biological Technologies in Agriculture

Research

María Engracia Carrión¹  Juana Coello²  Manuel Carmona³  Guayente Latorre⁴  Amaya Zalacain⁴  M. Mercedes García-Martínez⁵ 

[1]Institute for Regional Development (IDR), Food Quality Research Group, Universidad de Castilla-La Mancha, Campus Universitario S/N, 02071, Albacete, Spain

[2]Institute for Regional Development (IDR), Science and Engineering of Materials, Universidad de Castilla-La Mancha, Campus Universitario S/N, 02071, Albacete, Spain

[3]Instituto Técnico Agronómico Provincial de Albacete, ITAP, Parque empresarial campollano, 2ª Avenida, 02007, Albacete 61, Spain

[4]Universidad de Castilla-La Mancha, E.T.S.I. Agronómica, de Montes Y Biotecnología (ETSIAMB), Cátedra de Química Agrícola, Avda. de España S/N, 02071, Albacete, Spain

[5]Universidad de Castilla-La Mancha, E.T.S.I. Agronómica, de Montes Y Biotecnología (ETSIAMB), Cátedra de Química Agrícola, Avda. de España S/N, 02071, Albacete, Spain

[6]Instituto Técnico Agronómico Provincial de Albacete, ITAP, Parque empresarial campollano, 2ª Avenida, 02007, Albacete 61, Spain

关键词: Guayule;    Guayulins;    Postharvest;    Resin;    Stability;    Thermogravimetric analysis;   

DOI  :  10.1186/s40538-023-00458-9

 received in 2023-06-23, accepted in 2023-08-22,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundGuayulins comprise a family of sesquiterpene compounds with potential industrial applications that are extracted from the resinous fraction of the guayule plant (Parthenium argentatum, A. Gray). If a whole industry is to be developed around guayulins, not only their activity should be assessed, but also their stability because the quality of the final products is likely influenced by the time that elapses from harvesting to processing. Thus, the aim of the present study was to evaluate the stability of guayulin compounds from harvested guayule stems or extracted resin after storage at different temperatures to find in which form, stems or resin, is the storage better.ResultsResults showed that, once extracted, the resin could be stored at 20-25 °C for 3 months or more without significant losses of guayulin content. In the case of harvested stems, however, the findings were more complex, with guayulins A and B degrading over time and guayulins C and D showing enrichment. In addition, analysis of the thermal and thermo-oxidative degradation of the resin and guayulins showed that while guayulins A and B showed a maximum decomposition rate around 280 °C, guayulins C and D decomposed at 245 °C. Such thermal differences might be attributed to the observed oxidation of guayulin A and B standards into guayulin C and D, respectively.ConclusionThese findings provide, for the first time, information on the stability of guayulins after harvesting and resin extraction, which could help to the development of an integral industrial process from harvesting to commercializing.Graphical Abstract

【 授权许可】

CC BY   
© Springer Nature Switzerland AG 2023

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