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Fulltext Natural Deep Eutectic Solvents (NADES): Phytochemical Extraction Performance Enhancer for Pharmaceutical and Nutraceutical Product Development

Hikmawanti NPE, Ramadon D, Jantan I, Mun'im A

Plants (Basel), 2021 Oct 01;10(10).
PMID: 34685899 DOI: 10.3390/plants10102091

Natural products from plants were extracted and widely studied for their activities against many disease conditions. The selection of the extracting solvent is crucial to develop selective and effective methods for the extraction and isolation of target compounds in the plant matrices. Pharmacological properties of plant extracts and their bioactive principles are related to their excellent solubility, stability, and bioavailability when administered by different routes. This review aims to critically analyze natural deep eutectic solvents (NADES) as green solvents in their application to improve the extraction performance of plant metabolites in terms of their extractability besides the stability, bioactivity, solubility, and bioavailability. Herein, the opportunities for NADES to be used in pharmaceutical formulations development including plant metabolites-based nutraceuticals are discussed.
Cubosome-based skin delivery: from topical to transdermal applications

Gunawan M, Efendi A, Ramadon D, Liew CV, Chutoprapat R

Expert Opin Drug Deliv, 2026 Nov;23(11):2059-2087.
PMID: 42779272 DOI: 10.1080/17425247.2026.2739504

INTRODUCTION: Skin delivery provides an alternative drug administration, although its effectiveness is limited by the stratum corneum barrier. Cubosomes, as third-generation lipid nanoparticles with bicontinuous cubic liquid crystalline structures, have emerged as promising nanocarriers that enhance skin penetration, sustain drug release, improve bioavailability, and minimize toxicity.
AREAS COVERED: This review discusses the biopharmaceutical mechanisms of cubosome-mediated skin delivery, including bioadhesion, stratum corneum lipid fluidization, controlled release, enhanced cellular uptake, and improved bioavailability. Literature from 2006-2026 was collected from Scopus, PubMed, and patent databases, covering localized applications such as dermatological disorders, wound healing, fungal infections, alopecia, inflammatory skin diseases, and oncology, as well as systemic therapies including rheumatoid arthritis, gout, diabetes mellitus, and hormone replacement therapy. Recent advances, including microneedle integration, thermosensitive hydrogels, stimuli-responsive systems, and surface-engineered cubosomes, are also highlighted.
EXPERT OPINION: Cubosomes represent a promising platform for advanced skin delivery. Optimal performance depends on the therapeutic goal, with systemic delivery requiring enhanced permeation and sustained absorption, whereas localized therapy prioritizes intradermal retention and tissue depot formation with minimal systemic exposure. Despite strong preclinical evidence, further studies on long-term safety, manufacturing standardization, and clinical validation are essential for successful clinical translation and commercialization of cubosome-based skin delivery.
Fulltext Ultrasonic-assisted extraction (UAE) of Javanese turmeric rhizomes using natural deep eutectic solvents (NADES): Screening, optimization, and in vitro cytotoxicity evaluation

Ariestanti DM, Mun'im A, Hartrianti P, Nadia B, Chriscensia E, Rattu SA, et al.

Ultrason Sonochem, 2025 Mar;114:107271.
PMID: 39955874 DOI: 10.1016/j.ultsonch.2025.107271

Javanese turmeric (Curcuma xanthorrhiza Roxb.) is known for its diverse pharmacological activities due to its rich phytoconstituents, including curcuminoids and xanthorrhizol. Typically, these compounds are extracted using organic solvents, which pose health and environmental risks. Therefore, safer and more environmentally friendly green extraction methods are being developed. This study investigated the effect of ultrasound-assisted extraction (UAE) combined with natural deep eutectic solvents (NADES) based on choline chloride and organic acids (lactic, malic, and citric acid) to find the best combination for extracting curcuminoids and xanthorrhizol from Javanese turmeric. Results showed that UAE using choline chloride and malic acid (1:1) (ChCl-MA) yielded the best results. The Box-Behnken Design optimized water addition, solvent-to-powder ratio, and extraction time, with optimal conditions being 25 % water addition, a 20 mL/g ratio, and a 15-minute extraction time. This method yielded 4.58 mg/g of curcuminoids and 12.93 mg/g of xanthorrhizol. Furthermore, the ChCl-MA NADES with UAE extraction showed more cytoselective activity towards the HeLa cancer cell line compared to the non-cancer HaCaT cell line. In contrast, traditional ethanol extraction was non-selective, as indicated by similar cell viability reductions in both HeLa and HaCaT cells at 6.25 ppm. Collectively, this study is the first to report the optimal NADES combination with UAE, based on salts and organic acids, for the extraction of Javanese turmeric rhizomes with selective cytotoxic effects against cancer cells. These findings may contribute to the development of novel, naturally derived anticancer agents using green extraction techniques.

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