Gelatin/PLA-loaded Gold Nanocomposites Synthesis Using Syzygium Cumini Fruit Extract and Their Antioxidant, Antibacterial, Anti-inflammatory, Antidiabetic and Anti-Alzheimer's Activities

Overview

Journal Sci Rep

Date 2025 Jan 15

PMID 39814774

Authors

Manickam Rajkumar

S I Davis Presley

Nathiya Thiyagarajulu

Koyeli Girigoswami

Gopalarethinam Janani

Chinnaperumal Kamaraj

Bharathi Madheswaran

Bhupendra Prajapati

Nemat Ali

Mohammad Rashid Khan

Affiliations

Soon will be listed here.

Abstract

Nanotechnology has experienced significant advancements, attracting considerable attention in various biomedical applications. This innovative study synthesizes and characterizes Ge/PLA/AuNCs (gelatin/PLA/gold nanocomposites) using Syzygium cumini extract to evaluate their various biomedical applications. The UV-Visible spectroscopy results in an absorption peak at 534 nm were primarily confirmed by Ge/PLA/AuNCs synthesis. The FTIR spectrum showed various functional groups and the XRD patterns confirmed the crystalline shape and structure of nanocomposites. The FESEM and HRTEM results showed a oval shape of Ge/PLA/AuNCs with an average particle size of 21 nm. The Ge/PLA/AuNC's remarkable antioxidant activity, as evidenced by DPPH (70.84 ± 1.64%), ABTS activity (86.17 ± 1.96%), and reducing power activity (78.42 ± 1.48%) at a concentration of 100 μg/mL was observed. The zone of inhibition against Staphylococcus aureus (19.45 ± 0.89 mm) and Echericia coli (20.83 ± 0.97 mm) revealed the excellent antibacterial activity of Ge/PLA/AuNCs. The anti-diabetic activity of Ge/PLA/AuNCs was supported by inhibition of α-amylase (82.56 ± 1.49%) and α-glucosidase (80.27 ± 1.57%). The anti-Alzheimer activity was confirmed by inhibition of the AChE (76.37 ± 1.18%) and BChE (85.94 ± 1.38%) enzymes. In vivo studies of zebrafish embryos showed that Ge/PLA/AuNCs have excellent biocompatibility and nontoxicity. The SH-SY5Y cell line study demonstrated improved cell viability (95.27 ± 1.62%) and enhanced neuronal cell growth following Ge/PLA/AuNCs treatment. In conclusion, the present study highlights the cost-effective and non-toxic properties of Ge/PLA/AuNCs. Furthermore, it presents an attractive and promising approach for various future biomedical applications.

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