A green approach to fingerprint enhancement: The potential of alternanthera dentata leaf powder

Abstract

The field of forensic science necessitates the utilization of efficient techniques for the enhancement of latent fingerprints. Environmental issues are frequently raised when traditional approaches are employed in this context. This study introduces an innovative and ecologically responsible solution to this challenge in the form of Alternanthera Dentata (AD) leaf powder. AD is renowned for its striking and vivid deep purple leaves, and it unveils remarkable properties as a natural pH indicator. Its distinctive characteristic lies in the ability to undergo a vivid transformation from a rich crimson hue to a greenish-yellow tint, responding to alterations in pH levels, a phenomenon attributed to its anthocyanin content. The research demonstrates the versatility of AD leaf powder across diverse surfaces and its distinctive ability to indicate pH levels. The use of methanol for AD leaf powder extraction enhances the sensitivity of anthocyanins to pH fluctuations. The innovative approach not only proves the efficacy of AD leaf powder in enhancing fingerprint clarity but also emphasizes its eco-friendliness and cost-effectiveness. This study establishes Alternanthera Dentata (AD) leaf powder as a promising and sustainable solution for latent fingerprint enhancement in forensic science. The compatibility of AD with various surfaces, coupled with its natural pH indicator properties, positions it as a valuable resource. The incorporation of methanol further boosts sensitivity, highlighting the eco-friendly and cost-effective nature of this innovation. By embracing environmental sustainability principles, this research contributes to a greener and more responsible future for forensic science applications.