Characterization of Samples of Green Coconut Husk (Cocos Nucifera L.) in Natura Collected in Maranhão, Piauí, and Ceará

Background: To define the applicability of green coconut husk, it is important to understand its chemical and physical characteristics. Objective: Therefore, this study aims to evaluate the chemical composition and particle size of crushed green coconut husk from three states: Maranhão, Piauí, and Ceará. Methods: After crushing, we assessed the levels of cellulose, hemicellulose, lignin, and ash, and investigated the particle sizes of the coconut husk (9-325 mesh). Principal component analysis and Pearson correlation were also conducted. Results: Regarding particle size, there is greater retention at 48 mesh, and in terms of chemical composition, the levels of cellulose, hemicellulose, lignin, and ash showed values close to 30%. Principal component 1 is related to particle size, while principal component 2 is related to composition. We also observed a correlation between lignin and cellulose levels and particle size. Conclusion: The analysis of green coconut husk reveals a relationship between particle size and chemical composition.