Microstructure, Extinction Coefficient, and Chlorophyll Content of Philippine Bamboo Leaves by a Portable TD-OCT Scanner

Jumar Cadondon, Jumar Cadondon, Jumar Cadondon, Edgar Vallar, Maria Cecilia Galvez, Tatsuo Shiina

2025

Abstract

Bamboo is one of the most utilized non-timber forest products in the Philippines. Common bamboo leaf infections are caused by sunlight, and nutrient deficiency. In this study, we have developed a portable time domain-optical coherence tomography (TD-OCT) to study in vivo leaf microstructure changes in Philippine bamboo (Bambusa spinosa). TD-OCT analysis shows unique features among different layers of the leaves specifically on the epidermis and palisade layers when the unhealthy part is compared to the healthy part. Extinction coefficient from the A-scan analysis showed significant difference from unhealthy part (1.03 ± 0.20 mm-1, N =12, p<0.05) and healthy part (0.72 ± 0.27 mm-1, N =12, p<0.05). In addition, RGB data was compared for both unhealthy and healthy part of the bamboo leaves. A red shift is observed from the unhealthy part of the leaves. It is also observed by a decrease of 60% in chlorophyll-a content of the unhealthy part as compared to the healthy part. Same inverse correlation is also observed when the extinction coefficient is compared with the chlorophyll content.

Paper Citation

in Harvard Style

Cadondon J., Vallar E., Galvez M. and Shiina T. (2025). Microstructure, Extinction Coefficient, and Chlorophyll Content of Philippine Bamboo Leaves by a Portable TD-OCT Scanner. In Proceedings of the 13th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS; ISBN 978-989-758-736-8, SciTePress, pages 114-119. DOI: 10.5220/0013244900003902

in Bibtex Style

@conference{photoptics25,
author={Jumar Cadondon and Edgar Vallar and Maria Galvez and Tatsuo Shiina},
title={Microstructure, Extinction Coefficient, and Chlorophyll Content of Philippine Bamboo Leaves by a Portable TD-OCT Scanner},
booktitle={Proceedings of the 13th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS},
year={2025},
pages={114-119},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0013244900003902},
isbn={978-989-758-736-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 13th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS
TI - Microstructure, Extinction Coefficient, and Chlorophyll Content of Philippine Bamboo Leaves by a Portable TD-OCT Scanner
SN - 978-989-758-736-8
AU - Cadondon J.
AU - Vallar E.
AU - Galvez M.
AU - Shiina T.
PY - 2025
SP - 114
EP - 119
DO - 10.5220/0013244900003902
PB - SciTePress