Fruit and vegetable waste and by-products for pigments and color

Călinoiu, Lavinia Florina; Mitrea, Laura; Teleky, Bernadette Emoke; Szabo, Katalin; Martău, Adrian Gheorghe; Nemes, Silvia Amalia; Plamada, Diana; Pascuta, Mihaela Stefana; Barta, Gabriel; Varvara, Rodica Anita; Ștefănescu, Bianca Eugenia; Vodnar, Dan Cristian

doi:10.1016/b978-0-323-91743-8.00011-3

Cited by 1 publication

(1 citation statement)

References 115 publications

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“…For example, spirulina [29,32] and turmeric [30] extracts have demonstrated impressive durability and promise when incorporated into wood paints. Numerous studies have focused on examining the dyeing potential of leftover fruit and vegetable materials [33], as well as assessing how Aspergillus carbonarius can be used in processing them to create natural pigments [34]. In a similar vein, red pitaya has been utilized as a dye source for making ink and film [35], whereas wood waste has demonstrated its potential to produce durable and effective pigments suitable for paints [36].…”

Section: Introductionmentioning

confidence: 99%

Assessing the Impact of Sepiolite-Based Bio-Pigment Infused with Indigo Extract on Appearance and Durability of Water-Based White Primer

Calovi,

Rossi

2024

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The objective of this study is to evaluate how two varying amounts of sepiolite-based powder, infused with indigo extract, affect the appearance and durability of a water-based, white primer. To examine the influence of this eco-friendly pigment on the coatings’ overall appearance, assessments were performed for color, gloss, and surface roughness. Additionally, the coatings were investigated through optical and electron microscopic observations, to evaluate the distribution of the pigment within the polymer matrix. The effect of the pigment on the coating’s durability was assessed through accelerated tests, including exposure in a salt spray chamber and a UV-B chamber. These tests aimed to evaluate the emergence of defects and changes in the appearance of the samples over time. Furthermore, the impact of different quantities of sepiolite-based powder on the coating’s ability to act as a barrier was assessed using liquid resistance tests and contact angle measurements. These evaluations aimed to understand how the coating responded to various liquids and its surface properties concerning repellency or absorption. In essence, this study underscores the considerable influence of the eco-friendly pigment, demonstrating its capacity to introduce unique color and texture variations in the paint. Moreover, the inclusion of the pigment has enhanced the coating’s color stability, its ability to act as a barrier, and its overall durability when exposed to harsh environments.

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