Tag Archives: fungi

Response of Fungi to Diesel Oil Contamination of a Soil in Nigeria (Published)

Since petroleum production began, pollution of natural environments by crude oil and its products had been devastitating; exposure of microorganisms to the crude oil contamination could have some measurable effects on soil microbial community and in turn alter soil fertility. This study therefore focused on the response of fungi to diesel oil contamination in a soil. Soil samples (3kg weight) were contaminated with 90ml, 180ml, and 270ml volumes of diesel oil; uncontaminated soil (0ml volume) served as control. Microbiological analysis of the soil samples was carryout on saboraud dextrose agar and mineral salts oil ager at days 1, 7, 14 and 21 intervals after addition of diesel oil to the soils. Mean counts of heterotrophic fungi (X103CFU G-1 soil) were: 0ml, 7.0, 90ml, 4.5, 180ml, 4.5, and 270ml, 4.0. Mean densities of hydrocarbon-utilizing fungi (X102CFU G-1 soil) for 0ml, 90ml, 180ml, and 270ml soil options were: 5.0, 3.5, 6.8 and 3.0 respectively. Fungal organisms isolated include Aspergillus niger, Aspergillus species, Fusarium species, Mucor species, Rhizopus species and Saccharomyces species, which occurred in control soil and polluted soils but Mucor species did not occur in 90ml soil option. The study showed that heterotrophic fungi responded negatively to addition of diesel oil to soil while hydrocarbon-utilizing fungi showed both positive and negative response depending on the volume of diesel added to soil. Occurrence of fungal organisms in polluted soils explained the fact that fungi are capable of utilizing diesel oil and can be used in cleanup operations in crude oil spillage sites.

Keywords: Contamination, Diesel Oil, Response, Soil, fungi

The Research of Coffee Quality Due To the Attack of Coffee Borer Pests Banana Hampei to Get a Big Profit in Mandailing Natal, Indonesia (Published)

The use of entomopathogen as a controlling agent is one way to avoid the negative impact of chemicals on the environment. In Indonesia in the 19th century the use of entomopathogenic fungi which is one of the important elements in biological control began to grow rapidly, especially on plantation crops. The combination of chemical compounds contained in coffee beans greatly affect the taste of coffee while the H. hampei attack can cause the defective coffee beans and also negatively affect the composition of chemical compounds contained in coffee beans, especially in caffeine and reducing sugar.

Keywords: Big Profit, Coffee Quality, Pest, fungi

The Research of Coffee Quality due to the Attack of Coffee Borer Pests Banana Hampei to Get a Big Profit in Mandailing Natal, Indonesia (Published)

The use of entomopathogen as a controlling agent is one way to avoid the negative impact of chemicals on the environment. In Indonesia in the 19th century the use of entomopathogenic fungi which is one of the important elements in biological control began to grow rapidly, especially on plantation crops. The combination of chemical compounds contained in coffee beans greatly affect the taste of coffee while the H. hampei attack can cause the defective coffee beans and also negatively affect the composition of chemical compounds contained in coffee beans, especially in caffeine and reducing sugar.

Keywords: Big Profit, Coffee Quality, Pest, fungi

THE EFFECT OF ALKALOIDS AND FLAVONOIDS EXTRACTS OF VITEX DONIANA SEED ON SOME MICROORGANISMS (Published)

This research studied the effects of alkaloids and flavonoids extracts of Vitex doniana seeds on some pathogenic bacteria and fungi. The bacteria are: P. aeroginosa, B. subtilis, S. aureaus, E. coli and S. typhi. The fungi are C. albican and A. niger. It was found that the alkaloid and flavonoid extracts of the seed inhibited the above named five bacteria successfully. The alkaloid and flavonoids extracts of the seed cannot inhibit the above mentioned two test fungi. Alkaloid and flavonoids extracts of V. doniana seeds are antibiotic in action. This knowledge can help the new generation pharmacists in their formulation of new drugs to improve health care delivery.

Keywords: Alkaloids, Bacteria, Flavonoids, Vitex doniana seed, fungi, microorganisms and extracts.