Current Issue

The 4rd issue of the 2nd volume of Recent Advances in Food Sciences is now being populated.

 

Recent Advances in Food Science – RAdvFoodSci 2019; Vol 2; Issue 4 (30 December)

Distillers dried grains with solubles (DDGS) mainly contains protein, oil, fiber, and ash. DDGS could have more economic value and wider use if it could be separated into higher protein fraction and higher fiber fraction. Various ways have been explored in recent years, and two of the most effective processes are sieving and winnowing. In the present work, the optimization of three parameters of a gravity separator (side slope, eccentric shaft vibration, and the air flow rate), was conducted to separate DDGS. DDGS was firstly sieved into five size categories, then three categories and raw DDGS were further separated into light, mid-light, mid-heavy and heavy fractions using the gravity separator. By adjusting the three parameters, four combinations were tested. After nutrient analysis, the best parameters were determined: the eccentric shaft vibration was 420 rpm, the side slope was 5o, the airflow rate was 0.8890 m/s, and the DDGS category was 0.425-2.000 mm. This process was found to be effective in getting substantial fractions enriched in protein and oil.

Recent trends in the contamination of cereal grains by mycotoxins were reported with respect to public health concerns. Mycotoxins are toxic fungal secondary metabolites, poisonous to humans and animals, and having maize, guinea corn, millet and rice as candidate crops. Reports on some regulated mycotoxins such as aflatoxins, fumonisins, ochratoxin, zearalenone, and some emerging ones like moniliformin and citrinin are highlighted, with Aspergillus, Fusarium, Penicillium and Alternaria as major producers. Although high-level occurrence in cereals in Nigeria have been documented, risk assessment estimates for consumers have only been done on the major mycotoxins with more focus on individual toxins.  This review represents a synthesis from a recent data collected on mycotoxin contamination of some of the grains consumed as major staples in Nigeria, and the possible health effect on consumers through the analysis of the risk assessment estimates. It also touches on the possibility of guiding government policy on international trade.

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