Abstract
Cyanobacteria exhibit great biotechnological potential due to their capacity to produce compounds with various applicability. Volatile organic compounds (VOCs) possess low molecular weight and high vapor pressure. Many volatiles produced by microorganisms have biotechnological potential, including antimicrobial activity. This study aimed to investigate the VOCs synthesized by cyanobacterium Synechococcus sp. strain GFB01, and the influence of nitrate and phosphate on its antibacterial potential. The strain was isolated from the surface of the freshwater lagoon Lagoa dos Índios, Amapá state, in Northern Brazil. After cultivation, the VOCs were extracted by a simultaneous distillation-extraction process, using a Likens-Nickerson apparatus (2 h), and then identified by GC-MS. The extracts did not display inhibitory activity against the Gram-positive bacteria tested by the disk-diffusion agar method. However, the anti-Salmonella property in both extracts (methanol and aqueous) was detected. The main VOCs identified were heptadecane (81.32%) and octadecyl acetate (11.71%). To the best of our knowledge, this is the first study of VOCs emitted by a cyanobacterium from the Amazon that reports the occurrence of 6-pentadecanol and octadecyl acetate in cyanobacteria.
Highlights
Cyanobacteria are the most ancient group of photosynthetic bacteria of earth, and its presence contributed to the development of aerobic atmospheric in which allowed the appearance of new forms of life [1]
Volatile organic compounds (VOCs) this work aimed at the identification and evaluation of the biotechnological potential of VOCs synthesized cyanobacterium
Previous studies reported a strong relation between alkane chain length and cyanobacterial natural habitat
Summary
Cyanobacteria are the most ancient group of photosynthetic bacteria of earth, and its presence contributed to the development of aerobic atmospheric in which allowed the appearance of new forms of life [1]. It is known that they gave rise to the higher plant chloroplasts. Possess several similarities [2]. These bacteria belong to a very diverse group distributed in several types of environments, including hot spring, cold deserts, oceans, hypersaline water, and freshwater [3,4]. A considerable number of molecules identified in cyanobacteria with potential applications in pharmaceutical, food, and cosmetic industries, as well as biofuel and agriculture, have been described [7]
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