Banca de DEFESA: JOSÉ ANTONIO MARQUES LINS NETO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOSÉ ANTONIO MARQUES LINS NETO
DATE: 26/02/2025
TIME: 14:00
LOCAL: Auditório do DQ
TITLE:

PHYSIOLOGICAL-BIOMETRIC AND PHYTOCHEMICAL STUDY OF PORK BEANS (Canavalia ensiformis) SUBJECTED TO LEAF STIMULATION OF PHOTOSYNTHESIS

KEY WORDS:

Carbon dots; fluorescence; jack beans; nanoparticles; photosynthesis.

PAGES: 59
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Inorgânica
SPECIALTY: Físico Química Inorgânica
SUMMARY:

Hunger is one of the main hardships found in the world, and it increases every day mainly due to the disparity between social classes and the lack of essential foods. With such a need, there must be an increase in production strategically and cleanly, and actions to develop new technologies reveal the demands of these sectors, including nanomaterials. Carbon dots are allotropic nanomaterials of carbon, which have spread in the academic and industrial fields over the last two decades. They are used in the most diverse areas, including agriculture, as foliar photosynthesis stimulates increased productivity. In this work, carbon dots doped with boron and nitrogen were synthesized and characterized as foliar photosynthesis stimulants. With this, physiological-biometric and phytochemical studies were carried out on jack bean plants. The infrared spectroscopy data of N-PC showed signals at 3323 and 1641 cm-1, referring to the OH/NH and C=N bands, respectively. For the BN-PC spectrum, it was possible to observe B-O bands at 1401 cm-1, B-OH at 1189 cm-1, C=B at 1059 cm-1, B-O-C at 924 cm-1 and NH2 at 2939 cm-1. These data suggest that the doping process was successful. The luminescence spectroscopy data indicate that the carbon dots produced can be used as a foliar photosynthesis stimulant since the maximum emission of all the systems produced is in the blue-green range (O-PC at 463 nm; N-PC at 490 nm; B-PC at 446 nm; BN-PC at 481 nm). The research showed that the treatments that had doped carbon points converged in a significant increase in leaf area and root size and the growth of defense compounds for the bean plants.

COMMITTEE MEMBERS:
Externo ao Programa - 1188944 - FERNANDO JOSE FREIRE - nullInterno - JOAO RUFINO DE FREITAS FILHO
Presidente - WAGNER EDUARDO DA SILVA