Production and characterization of Sumac PlantCrystals: Influence of high-pressure homogenization on antioxidant activity of sumac (Rhus coriaria L.)

ABSTRACT: Oxidative stress diseases are usually treated or prevented by using antioxidants from natural or artificial sources. However, as a sustainable source of phytochemicals, plants got a renewed interest in obtaining their active agents using green extraction technologies, i.e., sustainable extraction techniques that reduce energy consumption, use renewable sources and result in less post-extraction wastes. The high-pressure homogenization (HPH) technique was introduced into the food industry since it was invented in 1900 to homogenize milk and later to produce fruit juices with a longer shelf-life without preservatives. Recently, HPH was introduced as an eco-friendly method to nanomill plants for improved extraction efficacy without using organic solvents. In this study, sumac was used as an antioxidants-rich spice model to investigate the effects of HPH on its antioxidant capacity (AOC). Sumac was rendered into PlantCrystals by using HPH. Particle size characterization proved the presence of submicron-sized particles (about 750 nm). Thus, HPH was able to produce sumac PlantCrystals and increased the AOC of bulk sumac by more than 650% according to the ORAC (oxygen radical absorbance capacity) assay. The polyphenol and flavonoid contents showed higher values after HPH. Interestingly, the DPPH (1,1-diphenyl-2-picrylhydrazyl) assay also showed a well improved AOC (similar to ascorbic acid) after HPH. In fact, in this study, the PlantCrystal-technology was demonstrated to cause an efficient cell rupture of the sumac plant cells. This caused an efficient release of antioxidants and resulted in sumac PlantCrystals with a 6.5-fold higher antioxidant capacity when compared to non-processed sumac bulk material.

• Autores: Osorio Durango, Edison; Quintero Ortíz, Camilo Andrés; Carrillo Hormaza, Luis Carlos; Abraham, Abraham M.; Keck, Cornelia M.
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2021
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/39178
• Acceso en línea: https://hdl.handle.net/10495/39178
• Palabra clave: Plantas; Plants; Anacardiaceae; Rhus; Antioxidantes; Antioxidants; Extractos; Extracts; Rhus coriaria; PlantCrystals; High-pressure homogenization; Nanomilling; http://aims.fao.org/aos/agrovoc/c_2767; http://aims.fao.org/aos/agrovoc/c_c48a94f2; https://id.nlm.nih.gov/mesh/D010944; https://id.nlm.nih.gov/mesh/D027926; https://id.nlm.nih.gov/mesh/D029045; https://id.nlm.nih.gov/mesh/D000975
• Rights: openAccess
• License: https://creativecommons.org/licenses/by/4.0/