Boosting Therapeutic Effect of Turmeric, Coffee, and Chili Extracts Through Experimental Design and Encapsulation as Nanostructured Lipid Carriers for Novel Heath Supplements
2025
Pratchaya Tipduangta | Phennapha Saokham | Jutamas Jiaranaikulwanitch | Siriporn Okonogi | Chadarat Ampasavate | Kanokwan Kiattisin
This study investigates the potential synergistic effects of extracts from <i>Curcuma longa</i> (turmeric), <i>Coffea arabica</i> (Arabica coffee beans), and <i>Capsicum annuum</i> (chili peppers) in reducing oxidative stress and inflammation, which are associated with metabolic disorders such as obesity, diabetes, and cardiovascular diseases. Using a systematic design of experiment (DoE) optimization approach, an optimal extract ratio of 1:3:4 (turmeric: coffee: chili) was identified. The efficacy of the extract combination was assessed through various antioxidant assays, inhibition of inflammation-related gene expression, and safety testing via the 3-(4,5-dimethylthazolk-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay. The extract combination showed higher antioxidant activity and comparable anti-inflammatory effects relative to each single extract. Additionally, the extract combination demonstrated effective activity compared with turmeric extract while using a lower concentration, resulting in reduced cytotoxicity. The optimized extract combination was successfully incorporated into nanostructured lipid carriers (NLCs) with a hydrodynamic diameter of 258.0 ± 10.2 nm, which effectively redisperses after the spray-drying process with increased diameter to 349.8 ± 49.6 nm. Under stress conditions, the stability of curcumin and capsaicin in dried-NLCs was maintained. In summary, the optimized extract-loaded NLCs formulation, achieved through a multistage approach, shows promise in mitigating oxidative stress and inflammation, suggesting its potential as a valuable daily dietary supplement.
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