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Kane N.,Institute Of Technology Alimentaire | Ahmedna M.,North Carolina A&T State University | Yu J.,North Carolina A&T State University
International Journal of Food Science and Technology | Year: 2010

A peanut milk-based infant formula was developed from peanuts. The effects of extraction pH and temperature on the yield and protein content of spray-dried peanut milk were evaluated. Peanut-based infant formulas (PBIF-75) was developed using spray-dried peanut milk and a premix of vitamins and minerals. Physical properties, approximate composition, minerals, vitamins and amino acid composition, and caloric value of PBIF-75 were evaluated and compared to those of soya-based infant formula (SBIF) and World Health Organization (WHO) F-75. Spray-dried peanut milk yield was 15-18% with a protein content of 30-45%, depending on the extraction pH and temperature. PBIF-75 was nearly identical to WHO F-75 in terms of amino acid profile, most vitamins and minerals, proximate composition, caloric value, and physicochemical characteristics such as water activity and colour. However, few of the vitamins and minerals in PBIF-75 will require further adjustment to fully meet WHO's requirements of a recovery formula for undernourished infants. © 2010 The Authors. International Journal of Food Science and Technology © 2010 Institute of Food Science and Technology.

Diop Ndiaye N.,Institute Of Technology Alimentaire | Dhuique-Mayer C.,Montpellier SupAgro | Cisse M.,Cheikh Anta Diop University | Dornier M.,Montpellier SupAgro
Journal of Agricultural and Food Chemistry | Year: 2011

Detarium senegalense J.F. Gmel (ditax) is a forest tree found in Senegal the fruits of which are characterized by an attractive green flesh with a high amount in ascorbic acid. It is generally consumed as a nectar in Senegal. In this study, the main pigments of ditax pulp were identified and quantified by HPLC-DAD. Pheophytin a (128 mg/kg), which represents 58% of the total pigments, followed by hydroxypheophytin a′ (33 mg/kg), chlorophyll b (24 mg/kg), and chlorophyll a (20 mg/kg) was the major pigment of ditax pulp. Lutein and β-carotene were present in lower amounts (4.6 and 3.6 mg/kg, respectively). The thermal degradation kinetics of pheophytin a, hydroxypheophytin a′, and ascorbic acid were determined at temperatures ranging from 60 to 95 °C in ditax nectar. Pheophytin a was the most heat sensitive. Thermal processing induced the formation of degradation products such as pyropheophytin a and pyropheophytin b. The kinetics parameters have been calculated according to the models of Arrhenius, Eyring, and Ball. Following the Arrhenius relation, activation energies of pheophytin a, hydroxypheophytin a′, and ascorbic acid were, respectively, 79, 74, and 46 kJ mol-1. Losses calculated during isothermal treatments were close to experimental losses in pheophytin a, hydroxypheophytin a′, and ascorbic acid. The Eyring model can then be used to predict chlorophyll pigments and vitamin C losses during pasteurization of the nectar (<10%). © 2011 American Chemical Society.

Talla Gueye M.,Institute Of Technology Alimentaire | Seyni Cissokho P.,Institute Of Technology Alimentaire | Goergen G.,International Institute Of Tropical Agriculture | Ndiaye S.,University Of Thies | And 4 more authors.
International Journal of Tropical Insect Science | Year: 2012

Powdered maize cobs were tested as an alternative for pesticide use in stored maize. Five doses (2, 4, 6, 8 and 10 g/250 g seed) of powdered maize cobs applied at particle sizes of 1.4 and 0.4 mm diameter were compared with actellic powder against Sitophilus zeamais Motschulsky for 120 days. Mortality and survival data showed that cob powders did not act as fumigant but exerted a potent inhibition of progeny on direct contact with S. zeamais adults. The particle size of powdered cobs had no effect on maize damage and losses. At doses equal to or higher than 6 g powdered maize cobs/250 g grain maize, i.e. 2.4% (w/w), damage to grain was < 5% and weight losses < 1%. The protection offered at the highest dose was comparable to the pesticide control. The use of powdered maize cobs is discussed as a natural alternative to synthetic pesticides for protection of maize against S. zeamais. © 2012 ICIPE.

Gueye M.T.,Institute Of Technology Alimentaire | Seck D.,Ceres | Wathelet J.-P.,University of Liege | Lognay G.,University of Liege
Biotechnology, Agronomy and Society and Environment | Year: 2011

Post-harvest losses of cereals and legumes are a major problem in Senegal and West Africa. The solutions to eliminate insects, major pests of stored products were mainly chemical. However, due to pollution associated with pesticides use, selection of resistant strains, environmental pollution, poisoning, the search for alternatives is needed. It is reported on different methods of protecting stocks performed alternatively or in combination with pesticides. The major pest species encountered, particularly Prostephanus truncatus (Horn), insect emerging in Senegal, could be controlled by alternative methods including specially the use of insecticide plants. Different aspects related to this alternative way to chemical pesticides are reviewed herein.

Diallo Y.,Institute Of Technology Alimentaire | Gueye M.T.,Institute Of Technology Alimentaire | Sakho M.,Cheikh Anta Diop University | Gbaguidi Darboux P.,Institute Of Technology Alimentaire | And 3 more authors.
Biotechnology, Agronomy and Society and Environment | Year: 2013

Cassava is one of the main plants and starchy roots grown in the world. In 2008, the total yield of cassava in West Africa represented 29% of the world production. However, in many West African countries such as Senegal, cassava is not used as a staple food. In fact, the processing techniques used for cassava are poorly known. In addition, the chemical composition of local cassava varieties has not yet been determined, nor has their toxicity been assessed. In 2004, showing an aggressive agricultural policy and revived interest, the Senegalese government launched a major program for intensifying the production of cassava for food security purposes. Cassava is an important source of calories and can be an interesting option for imported rice and wheat. Although many food products made from cassava are well known in the region, their use in the Senegalese diet is rare. Nevertheless, these cassava products are found as delicacies in some restaurants, and are consumed by the Senegalese and many other Africans. The objective of the present study is to demonstrate the nutritional value and the dietary possibilities of using cassava as a staple food in Senegal.

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