Banca de DEFESA: JOÃO PEDRO DE SOUZA COELHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOÃO PEDRO DE SOUZA COELHO
DATE: 20/09/2024
TIME: 14:30
LOCAL: Geoma e meet.google.com/xqd-kmuk-nea
TITLE:

USING THE BARK OF NATIVE SPECIES TO PROMOTE SUSTAINABLE FOREST MANAGEMENT IN THE AMAZON

KEY WORDS:

Wood processing. Industrial utilization. Tannins. Reduced Impact Logging. Amazon Forest.

PAGES: 45
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

Studies on wood processing highlight the importance of techniques that maximize the use of wood residues, especially from native forests under sustainable management. This study aimed to quantify the volume of bark and the content of condensed tannins of the species Tauari (Couratari guianensis Aubl.) and Jequitibá (Allantoma lineata (Mart. ex O. Berg) Miers)) as a way of promoting the use of waste from sawmill. Five trees of each species were selected from a Forest Management Unit, located in the Jamari National Forest, Rondônia. The commercial boles from each tree were sectioned into logs and cubed with and without bark using the Smalian method. Three bark samples (3 x 5 cm) were collected from the base, middle and top positions of each log of commercial boles. In the laboratory, samples were ground using a Willey mill and extracts were prepared to extract tannin. The total solids content (TST), the Stiasny index (IS) and the condensed tannin content (TTC) were determined. Analysis of variance and Tukey's test at 5% probability were applied to the means of bark volume, bark percentage and bark factor along the length of the commercial stem, in order to verify statistical differences. Tauari bark represented 5.37% of the total bole volume, while Jequitibá represented 4.12%. An increase in bark volume was observed from the base to the top. Tauari had a total solids content of 14.20%, higher than the 5.44% of Jequitibá. The tannin content in Tauari bark was 3.21% and Jequitibá, 1.07%. Thus, at the end of the harvest, the production of 19,451.0 kg and 6,661.0 kg of tannin is estimated for Couratari guianensis and Allantoma lineata, respectively, which demonstrates the potential of the species' bark for uses as well as, it is suggested to continuity of studies evaluating other tannin extraction methods and their applications.

COMMITTEE MEMBERS:
Presidente - 1805850 - MARTA SILVANA VOLPATO SCCOTI
Interno - 1123716 - ADRIANO REIS PRAZERES MASCARENHAS
Externo ao Programa - 3357877 - THIAGO CARDOSO SILVA - UNIRExterna à Instituição - NATÁLIA MALAVASI VALLEJO