Evaluating Mulberry Clonal Genetic Resources through Chemical Characterization for Pulp and Paper Production

Abstract

Aims: The study aimed to evaluate the chemical characteristics of mulberry clonal genetic resources to assess their suitability as alternative raw materials for the pulp and paper industry in India, addressing the growing demand for wood-based feedstock. Study Design: A Completely Randomized Design (CRD) was adopted for the experimental layout, with statistical analysis performed using SPSS (version 23). Place and Duration of Study: The research was conducted at the Department of Sericulture, Forest College and Research Institute, Mettupalayam, Tamil Nadu and the study was carried out during 2023–2024. Methodology: Seventeen mulberry wood clones including Morus alba, Morus latifolia, and Morus laevigata were analyzed for their chemical composition. Parameters such as ash content, alcohol-benzene extractives, acid-insoluble lignin, holocellulose, 1% NaOH solubility, and hot water solubility were assessed following standard procedures and protocols. Results: Significant variation (P< 0.05) was observed among clones for all chemical traits. Ash content ranged from 0.69% to 2.46%, lignin from 23.48% to 28.41%, and holocellulose from 68.68% to 73.28%. Clones MI-0034, ME-0174, and MI-0145 recorded superior holocellulose content (≥72%), indicating high pulp yield potential. Solubility traits were within acceptable limits, further supporting their industrial suitability. Conclusion: The findings validate the potential of specific mulberry clones as sustainable raw materials for paper production. These clones offer a promising solution to India's pulpwood shortage and can be strategically deployed in future afforestation and industrial applications.