Studies on biochemical changes in maize wastes fermented with <i>Aspergillus niger</i>

Abstract

In an attempt to transform the agricultural waste products of maize cobs and shafts into useful products such as animal feeds and reduce the pollution effects of these wastes during maize seasons, they were fermented using Aspergillus niger for 72 hours. The fermented residues were analyzed with regard to proximate composition, mineral composition and some antinutrients content. The results revealed that there were significant increases in the protein of the microbial fermentation (12.58g/100g) compare with the unfermented sample (5.51g/100g) and fat (7.83g/100g) and (6.04g/100g) respectively. Conversely, there was significant decrease in phytate (197.44mg/100g) for fermented and (282.10mg/100g) unfermented). The mineral contents in parts per million (Na ,Cu, Zn, Mg, Ca, Na, K, and Co) were slightly high, Na was found relatively low in fermented sample while Cu and Co were not detected in both cases. From the results of the work, it could be inferred that Aspergillus niger, a cheap and treated nonpathogenic fungus could be used to enhance the nutritional potential of agricultural wastes as animal feeds and reduce environmental pollution.

Effect of Fermentation on the Nutritional and Antinutritional Composition of Lagenaria Siceraria Seeds

“…However, the percentage decrease in phytate content (49%) is comparable to (50%) obtained in the fermentation process of J. curcas seed. These observations are however contrary to the observations of Oladele and Oshodi [13] who observed an increase in the phytate and tannin content as a result of fermentation; but in consonance with what earlier obtained for reduced phytate by Oseni and Ekperigin [14] when pure strains of Aspergillus niger were used to ferment maize cobs, it is however possible that the mode of fermentation and the species of organisms involved play crucial roles in the fermentation processes. Decrease in phytate content due to fermentation will help in ensuring the bioavailability of minerals such as Ca, Mg, Fe, and Zn [15].…”

Livestock Feed Production from Sago Solid Waste by Pretreatment and Anaerobic Fermentation Process

“…According to Oseni and Ekperigin [18], Fermentation of plant waste not only increases the contents of protein, fat or crude fiber, but also increases the content of essential minerals that can be useful to the body's metabolism. The purposes of this research are to study NaOH pretreatment, the addition of Trichoderma sp and fermentation time to improve the quality of solid sago waste as livestock feed through anaerobic fermentation.…”

Study On the Biogas Yielding Potential of a Portable Bioreactor Using a Blend of Corn Cob and Rice Chaff Mixed With Goat and Dog Dungs

“…This is attributed to the better anaerobic environmental condition provided by the biogas with temperature and pH optimum for the activities of the microorganism in the digester. The yield could also be attributed to the high protein content in the feedstock which was degraded to cellulotic materials during fermentation to yield biogas by microorganism secreting some extra cellular enzymes (Oseni and Ekperigin, 2007). The volume of the yield remains the same from the 20 th day to the 22 nd and then increased to 18L on the 25 th day.The increase is due to the catabolic and metabolic activities of the organism resulting in the breakdown of the organic matter in the digester to produce biogas.…”