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Updated: Feb 12, 2026

Sigma's Non-specific Protease Activity Assay - Casein as a Substrate
Published on: September 17, 2008
Preparation, characterisation and antioxidant activities of rutin-loaded zein-sodium caseinate nanoparticles
1College of Food Science and Engineering, Qingdao Agricultural University, Qingdao, Shandong Province, China.
Abstract:
Novel rutin-loaded zein-sodium caseinate nanoparticles (ZP) with antioxidant activity in aqueous medium were investigated. The results showed that the sodium caseinate concentrations, dosages of rutin and ethanol volume fractions significantly affected the zein nanoparticles' characteristics. Concerning the antioxidant properties, the highest values of rutin loaded ZP obtained using 2, 2-diphenyl-1-picrylhydrazyl scavenging and 2 and 2'-azino-bis (3-ethylbenzothiazoline-6-sulphonic acid) decolourisation assays were 52.7% and 71.2%, respectively, and the total antioxidant capacity was 0.40 nmol g-1. The results suggest that zein-sodium caseinate nanoparticles can be used as a new nano carrier system for rutin or other water insoluble active ingredients.
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