Crude extracts of an endophytic fungus attenuate the growth of pathogenic bacteria in aquaculture.

Background And Objectives: Endophytic fungi are believed to possess compounds as antibacterial agents. This study was designed to determine antibacterial activity of the crude extracts from IBRL OS-64 against pathogenic bacteria.

Materials And Methods: The qualitative and quantitative screenings were performed using agar plug and disk diffusion antimicrobial tests, respectively.

Assessment of cultivation parameters influencing pectinase production by Aspergillus niger LFP-1 in submerged fermentation.

Background: Pectinase is helpful in food and beverage industries, particularly in the preparation of fruit juice, the extraction of vegetable oil, and the fermentation of coffee. The current work aimed to screen Aspergillus niger LFP-1, a recently identified fungal strain, for its ability to produce pectinase and to ascertain the contribution of various physicochemical factors to pectinase production.

Results: The primary and secondary pectinase activity screenings by Aspergillus niger LFP-1 were performed using pectin screening agar and shake flask system, respectively.

Synthesis, Structural Characterization, Hirshfeld Surface Analysis, and Antibacterial Study of Pd(II) and Ni(II) Schiff Base Complexes Derived from Aliphatic Diamine.

A Schiff base bearing two methyl substituents, namely, 6,6'-((1,1')-((2,2-dimethylpropane-1,3-diyl) bis(azanylylidene)) bis(methanylylidene)) bis(2-methylphenol) [HAD1Me] was synthesized and characterized through physicochemical and spectroscopic analyses. Then, the Schiff base was complexed with Pd(II) and Ni(II) to form [Pd(AD1Me)] and [Ni(AD1Me)], respectively. Both metal complexes were successfully obtained and characterized through several analyses, .

Inhibition of Klebsiella pneumoniae ATCC 13883 cells by hexane extract of Halimeda discoidea (Decaisne) and the identification of its potential bioactive compounds.

The inhibitory effect of the Klebsiella pneumoniae ATCC 13883 strain caused by the hexane extract of Halimeda discoidea (Nor Afifah et al., 2010) was further evaluated by means of the microscopy view and its growth curves. The morphological changes of the K.