Microencapsulation using a novel wall material prepared via Maillard reaction-derived mung bean protein-peach gum conjugates to enhance stability and functionality of chia seed oil.

This study investigated the potential of Maillard reaction products (MRPs) derived from mung bean protein isolate (MBPI) and peach gum (PG) conjugates as wall materials for microencapsulating chia seed oil (CSO). Four formulations (MMRP) were prepared using spray-drying and compared to a commercial sample (CMMRP). The MMRP formulation exhibited the highest encapsulation yield (91 %) and encapsulation efficiency (96 %), along with favorable physical properties, including a spherical shape and smooth surface. All formulation showed significantly greater stability during storage at 4 °C compared to 25 °C. After 30 days of storage, the MMRP formulation exhibited significantly higher oxidative stability, as evidenced by lowest peroxide values (0.3 and 0.24 mEq O/kg CSO at 4 °C and 25 °C, respectively). Furthermore, the MMRP formulation displayed the slowest decrease in DPPH radical scavenging activity, reaching 6.6 % at 4 °C and 10.4 % at 25 °C after 30 days, compared to 14.2 % and 20.9 % for CMMRP samples, correspondingly. Molecular dynamics simulations confirmed the effectiveness of MRPs as encapsulants for CSO. Overall, the results suggest that CSO microencapsulated with MRPs of MBPI-PG can be a valuable addition to various food products for long-term storage.