Copper nanoparticles (CuNPs) increase the vase life of cut carnation and chrysanthemum flowers: antimicrobial ability and morphophysiological improvements

Abstract

This research was carried out to evaluate the effects of copper nanoparticles (CuNPs) on the postharvest physiology of carnation and chrysanthemum cut flowers. Synthesized CuNPs were applied at 10 and 20 mg L-1 to both cut flowers by the pulsing method. The physicochemical characteristics and the activity of antioxidant enzymes were measured on 0, 3, 6 and 9 days along the vase life. According to heat map analysis, changes in measured parameters were affected by flower type > vase period > CuNPs concentration. Results also showed that treating the two species of cut flower with CuNPS by the pulse treatment improved the relative fresh weight (RFW), vase solution uptake (VSU), membrane stability index (MSI), flower diameter and total soluble carbohydrate (TSC). Meanwhile, a decrease in both bacterial population of the stem end and the hydrogen peroxide (H2O2) was observed. In comparison with the control, CuNPs at 20 mg L-1 by pulse treatment almost increased the vase life in both cut flowers by 30%.

Bioreduction and Stabilization of Nanosilver using Chrysanthemum Phytochemicals for Antibacterial and Wastewater Treatment

“…studied in‐vivo method for cytotoxic application using CT‐ mediated AgNPs to evaluates its cytotoxic effects; [48] (c) Rashidiani et al. prepared AgNPs incorporated CT flowers by chemical reduction methods for comparative postharvest responses; [49] (d) Arokiyaraj et al. reported CT‐mediated AgNPs synthesis for the potential application against the initial to final instar larvae and pupae of the malaria vector mosquitoes ( Anopheles stephensi ) [50] …”

“…It is worth pointing out that some of the reports on CT-mediate nanosilver, but their way of synthesis, ultimate objects, and applications were different concerning our present study. For example, (a) He et al synthesized CT-mediated AgNPs in clinical ultrasound gel application; [47] (b) Arokiyaraj et al studied in-vivo method for cytotoxic application using CT-mediated AgNPs to evaluates its cytotoxic effects; [48] (c) Rashidiani et al prepared AgNPs incorporated CT flowers by chemical reduction methods for comparative postharvest responses; [49]…”