DOI: 10.5061/dryad.gmsbcc2x5
title: Launaea cornuta (wild lettuce) leaf extract: Phytochemical analysis and synthesis of silver-zinc oxide nanocomposite

description: Access to quality drinking water is an essential human right and a
 fundamental aspect of human dignity, yet a challenge to many in developing
 countries. Over 2 billion people worldwide lack access to quality drinking
 water due to microbial contamination, among other factors. Silver-doped
 zinc oxide impregnated activated carbon nanocomposites, Ag-ZnO-AC NCs, a
 strong antimicrobial agent have been used at point-of-use to treat water
 treatment. Green synthesis of Ag-ZnO-ACNCs has played a vital role since
 it leads to the acquisition of non-toxic nanocomposites compared to
 chemical synthesis. In this study, Ag-ZnO-AC NCs were green-synthesized
 using Launaea cornuta leaf extract as a source of reducing and capping
 agents in place of synthetic chemicals. Antioxidants from Launaea cornuta
 (Wild Lettuce) leaves were extracted using 0, 50, and 100% EtOH solvents
 with different volumes and extraction circles. The highest phenolic (11044
 ± 63 µg) and antioxidant (44112 ± 894 µg) contents were extracted using
 50% EtOH and 20 ml of extract solvent with p&lt;0.05. The SEM and TEM
 images of the synthesized Ag-ZnO-AC NCs show the formation of highly
 porous AC with sheet-like structures and successful Ag-ZnO NCsimpregnation
 within the pores and on the surface of the AC.  Based on the
 inhibition zone, the antimicrobial activity of the Ag-ZnO AC NCs had
 significant results with 14.00 ± 0.37 for E. coli and 17.33 ± 0.36 mm for
 S. aureus, p&lt;0.05. These results confirm the significance of
 Launaea cornuta (Wild Lettuce) as a source of antioxidants that can be
 used as reducing and capping agents to synthesize Ag-ZnO-AC NCs.
description: XRD data was obtained through sample scanning by
 <strong>Rigaku XtaLAB Mini II Single-Crystal
 </strong>X-ray<strong>
 </strong><strong>Diffractometer (427 SC)</strong>
 equipped with analyzer scanning mode of CuKα wavelength (λ)=1.540598 Å, 45
 kV-30 mA and 2θ/θ with the spectrum range between 10 and 90 degrees and
 0.026 scan step size Microbial inhibition data was
 obtained through lab work using well diffusion method.
description: # Launaea cornuta (wild lettuce) leaf extract: Phytochemical analysis and
 synthesis of silver-zinc oxide nanocomposite
 [https://doi.org/10.5061/dryad.gmsbcc2x5](https://doi.org/10.5061/dryad.gmsbcc2x5) ## Description of the data and file structure The data uploaded represent the XRD and antimicrobial test for the silver zinc oxide impregnated activated carbon used in a manuscript titled "*Launaea cornuta (wild lettuce)* leaf extract: Phytochemical analysis and synthesis of silver-zinc oxide nanocomposite"**.** ### Files and variables **Description:** The data in the Archive.zip file are microbial inhibition data and XRD intensity data of the silver doped zinc oxide impregnated activated carbon nanocomposites. **File name:** Elizabeth Makauk_Ag-ZnO-AC XRD data.xls * C = Carbon * AC = Activated carbon * Ag-ZnO-AC = silver zinc oxide impregnated activated carbon * 650, 750 and 850 = Carbonization temperatures **File name**: Elizabeth Makauk_Ag-ZnO-AC Antimicrobial tests results * 10, 17 and 34 = the composite mass used in the antimicrobial tests