Chemical composition and chemotaxonomy of Nasutitermes spp. defensive secretion from Brazilian Cerrado for the differentiation of species

2020 ◽  
pp. 1-5
Author(s):  
Jerônimo Raimundo Oliveira-Neto ◽  
Naiara Raica Lopes de Oliveira ◽  
Alessandro de Carvalho Cruz ◽  
Pedro Henrique Ferri ◽  
Neucírio Ricardo de Azevedo
Author(s):  
Rayssa Gabriela Costa Lima Porto ◽  
Bárbara Verônica Sousa Cardoso ◽  
Nara Vanessa dos Anjos Barros ◽  
Edjane Mayara Ferreira Cunha ◽  
Marcos Antônio da Mota Araújo ◽  
...  

2018 ◽  
Vol 30 (4) ◽  
pp. 253-257 ◽  
Author(s):  
Fernando C. M. Medeiros ◽  
Cláudio H. S. Del Menezzi ◽  
Roberto F. Vieira ◽  
Yasmin F. M. Fernandes ◽  
Marcelly C. S. Santos ◽  
...  

2016 ◽  
Vol 90 ◽  
pp. 65-75 ◽  
Author(s):  
Graciene S. Mota ◽  
Caroline J. Sartori ◽  
Joana Ferreira ◽  
Isabel Miranda ◽  
Teresa Quilhó ◽  
...  

2013 ◽  
Vol 25 (5) ◽  
pp. 415-418 ◽  
Author(s):  
Rafael F. Silva ◽  
Claudia M. Rezende ◽  
Hellen C. D. Santana ◽  
Roberto F. Vieira ◽  
Humberto R. Bizzo

Fruits ◽  
2013 ◽  
Vol 68 (2) ◽  
pp. 121-134 ◽  
Author(s):  
Leandro de Morais Cardoso ◽  
Daniela da Silva Oliveira ◽  
Sabrina de Freitas Bedetti ◽  
Hércia Stampini Duarte Martino ◽  
Helena Maria Pinheiro-Sant’Ana

Author(s):  
Thâmara Machado Silva ◽  
Eli Regina Barboza Souza ◽  
Joelma Abadia Marciano De Paula ◽  
Samantha Salomão Caramori ◽  
Leonardo Luiz Borges

The use of biodegradable polymers arouses great biotechnological interest because their chemical composition favors the interaction with biological systems, allowing applications in health and environment besides are easily decomposed. This work presents the first effort of extraction, characterization and proposition of the polysaccharide of Anacardium othonianum Rizz. (PEJU-GO) as material with potential for biotechnological applications. Based on scanning electron microscopy, infrared spectra and thermogravimetric analysis, the polysaccharide of A. othonianum Rizz. is a microporous structure, with numerous intramolecular interactions due to the presence of polar groups that give the material great thermal stability. In addition to the thin layer chromatographic data, the analysis of the chemical composition demonstrates the existence of a galactomannan type structure, with low protein content. The presence of chalcones and flavonoid compounds were also detected. The polysaccharide was able to immobilize Horseradish peroxidase with 75% efficiency over an extended pH range and presented storage and operational stabilities.


1982 ◽  
Vol 37 (7) ◽  
pp. 935-936
Author(s):  
M. I. Akpata ◽  
T. . Olagbemiro

Abstract The pungent odours emitted by true bugs when disturbed have captured the attention of numerous students of the Heteroptera. Studies of the chemical composition of the secretion of these stink bugs have shown the presence of alkanes, alkenyl acetates, alcohols and unsaturated aldehydes [1-3]. Most of these chemicals are employed as chemical warfare against the onslaught of microbial, vertebrate and in-vertebrate attackers [4], We herein report the chemical investigation of a previously unstudied secretion of a pentatomid bug, Aspavia brunna. The combined gas chromatography -mass spectrometry provides an excellent method for the study of the secretions of insects. We have utilized this technique and our results are summarized below.


2009 ◽  
Vol 35 (2) ◽  
pp. 250-255 ◽  
Author(s):  
Wakako Ohmura ◽  
Shojiro Hishiyama ◽  
Tadakazu Nakashima ◽  
Atsushi Kato ◽  
Hiroshi Makihara ◽  
...  

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