Michael Wawire

Horn Development Advisory (HDA).

The aquaculture sector in Africa has great potential for growth; however, it faces several challenges, one of them being the scarcity of clean water. This prompts the need for water recycling. The present study was conducted to investigate the effects of rearing Nile tilapia (Oreochromis niloticus) using municipal wastewater treated with membrane b...

Feed is a major component of production costs in aquaculture, accounting for about 80% of the production costs. High-quality aquafeeds are a prerequisite to healthy and nutritious fish. Aquafeeds are expensive owing to the fact that fish oil and fish meals are the main sources of lipid and protein components, respectively. Having alternative, cheap...

Seaweeds, also known as macroalgae are marine plants used widely as food and applied in other food allied industries, pharmaceuticals, cosmetics and agrochemical industries. Their production has increased over the years with advancement in identification and cultivation of different seaweed species. Over the years seaweeds have been explored as a f...

Face centered central composite design was used to investigate the effect of spray drying process parameters (inlet temperature, atomization pressure and feed flow rate) on selected quality parameters of whole camel milk. During storage by freezing, the integrity of camel milk fat globules is maintained with observed aggregation. Whole camel milk c...

The effect of spray drying process parameters (i.e., inlet temperature, atomization pressure, and feed flow rate) on the denaturation of whey proteins of skimmed camel milk was studied using a face-centered central composite design. Spray drying of skimmed camel milk (i.e., total solids of 8.4% [w/w]) produced powders with a total solids content of...

Continuous or frequent ingestion of fried foods containing cytotoxic/mutagenic/genotoxic lipid oxidation products (LOPs) may present significant human health risks; such toxins are generated in thermally stressed polyunsaturated fatty acid (PUFA)-rich culinary frying oils (CFOs) during standard frying practices. Since monounsaturated and saturated...

To correlate the viscosity of camel milk with its atomization properties, first, the viscosity profiles of camel milk are compared with model milk systems (reconstituted skimmed cow milk powder). Then, atomization experiment was conducted using model milk systems and finally, the findings of the atomization experiments were coincided with the visco...

The effect of pre-treatment (salting and pressing) on the keeping qualities of spotted sardine (Amblygaster sirm) was investigated. Fish were stored under two different conditions of temperature and relative humidity: Massawa ambient conditions (M; 30–35 °C/46–55%) and air conditioned room (A; 25–29.5 °C/48–61%). Microbiological analysis (total pla...

The effect of spray drying on the composition of camel milk powder was evaluated. A full factorial experimental design was used to see the effects of inlet temperature (160 °C, 140 °C, and 120 °C), atomization pressure (800, 600, and 400 bar) and feed flow rate (5, 4, and 3 rev/s) on cyclone and vitamin C recoveries. Principal components analysis (...

The effect of process variables of spray drying on the surface and physico-chemical properties of camel milk powder was evaluated. A 2³ full factorial experimental design was used to determine the effects of inlet temperature (200 °C, 170 °C and 140 °C), drying air flow rate (9, 7.5 and 6 m³/min) and total solids of skimmed camel milk (40, 24 and 8...

Fish consumption in Eritrea is estimated at 0.5-1kg per person per year, which is very low compared to the maximum sustainable resource of the country, moreover small sized fish are used in animal feed which have great impacts on the effective utilization of the resources to alleviate malnutrtion, as one of the major problems faced. The raw materia...

Tomato (Lycopersicon esculentum Mill) is the leading vegetable in terms of production in Kenya. The Kenyan local market has a wide variety of tomato cultivars with a wide range of morphological and sensorial characteristics. However, information on the nutritional and postharvest quality of these varieties is lacking. The aim of this research was t...

Cowpea leaves form an important part of the diet for many Kenyans, and they are normally consumed after a lengthy cooking process leading to the inactivation of peroxidase (POD) that could be used as an indicator for the potential shelf life of the vegetables. However, color degradation can simultaneously occur, leading to poor consumer acceptance...

Cowpea leaves (Vigna unguiculata) are highly consumed in Africa because the plant is easy to cultivate and highly disease/drought tolerant. The vegetables are harvested between 4 and 9 weeks of maturity. The objectives of this study were to (i) investigate the effect of vegetable maturity on total folate content, poly-γ-glutamate profile and minera...

Cowpea, an African leafy vegetable ( Vigna unguiculata ), contains a high level of vitamin C. The leaves harvested at 4-9 weeks are highly prone to vitamin C losses during handling and processing. Therefore, the purpose of this research was to study the effect of thermal treatment on the stability of ascorbic acid oxidase (AAO), total vitamin C con...