Natural coloration of wood material by red beetroot (Beta vulgaris) and determination color stability under UV exposure

Abstract

This study is aimed to develop an eco-friendly wood stained extracted from beetroot (Beta vulgaris) and determine the color stability of this stain to UV light irradiation. Natural dyestuff were extracted from beetroot by ultrasonic-assisted method and prepared from aqueous solution with ferrous sulphate, aluminum sulphate, copper sulphate and vinegar mordant mixes. Scots pine (Pinus sylvestris), oriental beech (Fagus orientalis), oak (Quercus petraea) and walnut (Juglans regia) wood specimens were used for the study. After treatment with stain, wood specimens were exposed to UV irradiation for periods of 50, 100 and 150 hours. Results showed that the color change values for all wood specimens colored with beetroot extract had better performance compared to synthetic dye. Beetroot extracts may be used as an upper surface dyestuff for indoor application and toys. Therefore, alternative to synthetic dyes more economical and eco-friendly, wood paints may be developed.

Determination of the Effect of Liquid Glass (SiO2) on Color Stability of Wood Stained by Natural Dyes

“…Generally, the highest negative values (ΔL*) were observed on specimens that were treated with ferrous sulfate mordant. This result is compatible with literature studies about color changing (Yeniocak, et al, 2015) of natural dyes. The use of ferrous sulfate mordant produced high color (Feist and Hon, 1984;Peker et al, 2012) of wood components even when they are exposed to light.…”

“…Dark colors could absorb the light up to 98 %, and transparent colors up to 11 %. Therefore, darker wood species could have undergone more color changes (Yeniocak et al, 2015).…”

Polymeric Micro- and Nanosystems for Wood Artifacts Preservation

“…But when the exposure time increases, the values of Δa* become negative, which is associated with a tendency of both wood surfaces to become greenish. Lignin degradation leads to chromophoric groups formation, carbonyl, and carboxyl groups, which affect the color change mechanism [55]. The process of lignin degradation is accentuated by oxygen and moisture presence, decreasing the coating adhesion due to low-molecular degradation products.…”

Spectrophotometry, Physiochemical Properties, and Histological Staining Potential of Aqueous and Ethanol Extracts of Beetroot on Various Tissues of an Albino Rat

“…It has been used in inks and in staining woods [9] as well as in staining wool and thread [6]. Also, it has been used in staining of helminth parasites [3,10] and ova of intestinal nematodes [2].…”