Gabriel Olaniran Adegoke

Gabriel Olaniran Adegoke
University of Ibadan · Department of Food Technology

PhD

About

101
Publications
32,153
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1,536
Citations
Introduction
Information about me: (a) http://www.tech.ui.edu.ng/GOAdegoke (b) http://www.who.int/foodsafety/foodborne_disease/adegoke/en (c) Researcher ID: F-9377-2011 Professor Adegoke obtained his PhD degree (Veterinary Microbiology) in 1984 from the University of Ibadan, Nigeria and is a full Professor in the Department of Food Technology, University of Ibadan, Nigeria. Prof Adegoke is a recipient of scholarships and fellowships from the governments of Nigeria, Belgium, France, Germany, Japan, Finland and Canada. Prof Adegoke has taught in universities in Zambia, Kenya, South Africa , Lesotho and Nigeria. Professor Adegoke was invited as a Consultant by the World Health Organization (WHO) in 1996, 1999, 2002 and 2007-2014 on issues relating to Healthy Food Market, acrylamide and food safety( FERG
Additional affiliations
Position
  • Subjects taught at home and abroad: (1) Food Microbiology (2) Industrial Microbiology (3) Environmental Microbiology (4) Meat Technology (5) Food Quality Control and Plant Sanitation (6) Medical Microbiology and Parasitology (7) Fermentation Technology (8) Food Biotechnology (9) Food Security and Sustainable Agriculture (10) Animal Experimentation and Research Technology
Education
September 1979 - April 1984
University of Ibadan
Field of study
  • Veterinary Microbiology

Publications

Publications (101)
Article
Nixtamalization is one of the identified processing techniques to reduce mycotoxins contamination in food. In this study, the effect of five nixtamalization cooking ingredients (wood ashes, calcium hydroxide, sodium hydroxide, potassium hydroxide and calcium chloride) on the minerals composition of maize and sorghum was investigated using inductive...
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Although previous studies have reported the use of nixtamalization for mycotoxins reduction in maize, the efficacy of calcium hydroxide and other nixtamalization cooking ingredients for mycotoxin reduction/decontamination in sorghum and other cereals still need to be determined. The current study investigated the effect of five nixtamalization cook...
Article
Blend of several fruits (banana, pineapple, watermelon and cucumber) were used for producing wine. When it is realised that banana on its own may not really be suitable for wine production, however, addition of some fruits and Saccharomyces cerevisiae can be a source of obtaining acceptable wine. The aim of this work was to produce and improve th...
Article
Studies were carried out to determine the potential of using Aframomum danielli treatments to control aflatoxigenic fungi and aflatoxins B1, B2, G1 and G2 in samples of melon seeds from Lagos, Ibadan, Kaduna, Sokoto, Enugu and Agulu towns of Nigeria. The samples were treated with various percentages of A. danielli powder ranging from 1-10%. Aflatox...
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Spiced yoghurt improves health in various ways such as ability to improve metabolism and burn extra calories. Consumption of full fat yoghurt has declined due to the awareness of the probable harmful effects of fat on consumers' health, thus dietary habits of consumers have changed and market interest has also tended to change in favour of low or n...
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Volatile organic compounds (VOCs) derived from plants have been used in the fragrance industry since time immemorial. Herein we report on the rapid screening of VOCs from seeds of ripe Aframomum danielli (family, Zingiberaceae) using a polydimethylsiloxane fibre headspace solid phase microextraction coupled to a gas chromatography mass spectrometry...
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Tomato Solanum lycopersicum L. (Solanales: Solanaceae) is highly perishable and requires postharvest treatment to extend its shelf life. Use of synthetic chemicals to control post-harvest loss in tomato has adverse effect on health and there is need to explore natural alternatives to chemical. Two formulations of African black pepper Piper guineens...
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This study investigated the effects of the aqueous extracts of Aframomum danielli, Turmeric and Clove in sprouting of yam (Dioscorea rotundata) and sweet potato (Ipomoea batatas). The sliced tubers were dipped into the aqueous extracts of A. danielli, turmeric and Clove, each at concentrations of 5%, 10% and 15%. The tubers were allowed to stand in...
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This study was carried out to evaluate the effect of using the aqueous extracts of Aframomum danielli, Turmeric and Clove at different concentrations of 5%, 10% and 15% as pretreatments in controlling browning of yam (Dioscorea rotundata) and sweet potato (Ipomoea batatas). Colour measurements were carried out on the untreated (control) and pretrea...
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Breadfruit is a valuable food resource with significant amounts of certainminerals, vitamins and other essential amino acids. Wholesome fresh breadfruit was processed into dried chips and treated with ground Aframomum danielli and sodium metabisulphite salt in the same proportions. The treated breadfruit chips were packaged in polyethylene bags and...
Chapter
Aframomum danielli (Zingibereaceae), a nutritive and aromatic flavorant, is called mbongo spice, bastard melegueta, alligator pepper, and African cardamom. The major components of the essential oil of A. danielli seeds are 1,8-cineole (59.8%), β-pinene (13.2%), α-terpineol (9.3%), α-pinene (4.3%), and α-terpinyl acetate (3.2%). With an evaporation...
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Research has been on-going on many plant materials, especially those discarded as waste, to exploit their nutritional and antinutritional properties. This is as a result of the United Nations’ millennium development goal to eradicate extreme poverty and hunger. Avocado (Persea americana Mill) seeds are often discarded after taking the pulp of the f...
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Background Chemical exposures have been associated with a variety of health effects; however, little is known about the global disease burden from foodborne chemicals. Food can be a major pathway for the general population’s exposure to chemicals, and for some chemicals, it accounts for almost 100% of exposure. Methods and Findings Groups of foodb...
Data
Raw data for Gibb et al. 2015, ‘World Health Organization estimates of the global and regional disease burden of four foodborne chemical toxins, 2010’ A detailed description of the data can be found in the text file provided (‘Raw data legends’).
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This paper determines the composition of sorghum-millet flour, Aframomum danielli essential oil and its effect on mycotoxins in kunu zaki. Sorghum and millet grains in ratio 1:2 were cleaned, soaked for 12 h, washed, drained and dried in the hot air oven. The dried sorghum-millet grains were milled and packed for kunu zaki production. Kunu zaki was...
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A method for Aflatoxins analysis in melon seeds based on the AOAC method for the extraction of aflatoxins in melon seeds was validated. The scope of validation and the criteria determined included limit of detection, limit of quantization, linearity of calibration, recovery, precision of the method was determined from repeatability and intermediate...
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The effect of Aframomum danielli powder on the shelf life of physico-chemical properties of soy-milk based juice was studied. In this paper, attempt was made to investigate the preservative effect of the powder of Aframomum danielli, a local spice, on the physico-chemical properties of blends of soymilk and juices from fruits and vegetable by prolo...
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Spices are important supplements added to food as flavouring agents and/or a preservative and have been in use all over the world for thousands of years. Various additives have been utilised over the years to spice our food products. Synthetic additives, which have been in use, have come with various side effects, hence the need to shift focus to t...
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Antioxidative and flavouring effects of Aframomum danielli seed crude ethanolic extract on biscuits were studied. The degree of oxidation during storage was monitored by determining the acidity of the extracted fat from the biscuit samples using the standard method. Biscuits were baked with A. danielli seed extract at the following levels of additi...
Article
The purpose of the study was to assess potential application of front face fluorescence spectroscopy as a rapid and non-destructive technique to discriminate between fats of animal and plant origin based on their fatty acid profiles, and to predict concentration of fatty acids from fluorescence spectra. Vitamin E emission spectra (300–500 nm) of bu...
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Postharvest treatment of tomato (Lycopersicon esculentum Mill) fruits with synthetic fungicide is receiving major criticism due to its health risk and negative ecological inputs. This work was designed to evaluate the effect of Aframomum danielli aqueous extract on some chemical and antioxidant components of tomato fruits. Two hundred grams of fres...
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A study was carried out to monitor the control of cholesterol oxidation in mayonnaise using Aframomum danielli (A. danielli) antioxidant extracts. Mayonnaise samples were treated with A. danielli antioxidant extracts from diethyl ether, ethanol, n-hexane and that of a synthetic antioxidant butylated hydroxyl anisole (BHA) and these samples were ass...
Article
Effects of Xylopia aethiopica (Dunal) A. Richard aqueous extract on the antioxidants of matured tomato fruits at red stage were investigated at 13 ± 2 °C and 80 ± 5 % relative humidity. A sample treated with sodium bicarbonate and untreated samples were included. Samples packaged in low density polyethylene (30 μm thickness) bags were analysed at i...
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The effects of Aframomum danielli (A. danielli) anti-oxidant extract on lipid oxidation was studied. Mayonnaise samples were treated with antioxidant extracts and the anti-oxidant activities of A. danielli extracts from three different solvents; ethanol, n-hexane and diethyl ether and that of synthetic antioxidant butylated hydroxyl anisole (BHA) w...
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Generally, human food consists of resources of either plant or animal origin, which cannot be kept long after harvest or slaughter and starts deteriorating rapidly. Thus, it becomes imperative to find various ways of extending the shelf life of these materials/resources. The nature and characteristics of the material, like environment of the food a...
Chapter
This chapter reports on applications of GK seed in the treatment and management of a wide spectrum of diseases. The seed of bitter kola, a member of the genus Garcinia, is a lesser known plant food that is chewed not necessarily for its food value but rather for its curative properties. The ubiquitous use of the Garcinia kola (GK) seed in the weste...
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Phytochemical screening of methanol extracts of the leaves, flowers, stems and roots of Aframomum danielli revealed the presence of alkaloids, cardenolides, flavonoids and polyphenols. Fractions from the extracts were tested for antioxidant activities and lipoxygenase enzyme inhibition. Flower fraction FF5 and leaf fraction LF4, which were the most...
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Purpose – In Nigeria, soymilk and fried soy-cheese are common street-vended foods sold in market places, motor-parks, streets and schools. Many processors of these soy-foods are women using the soy-food business to generate income in supporting their families. They have little or no knowledge about good manufacturing practices and good hygiene prac...
Article
Storage study was carried out to investigate the effects of water extracted Aframomum danielli on cashew juice. Hot (100°C) and cold (5°C) extractions were made in order to establish a more potent extract and how long they will adequately preserve the juices without adversely affecting the quality parameters. The cold-water extraction showed a bett...
Article
The effects of Aframomum danielli crude antioxidant extract on storability of akara were investigated. Physical and chemical characteristics of oils used for frying were also assessed. Akara balls were spiced with Aframomum danielli crude antioxidant extract at; 100ppm, 200ppm, 300ppm, 400ppm, 500ppm and 1000ppm. Untreated sample without A. daniell...
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Sixty four samples of cocoa beans replicated in quadruplicates were collected from five warehouses from southwest Nigeria and examined for fungal loads, ergosterol and ochratoxin A The levels of all the variables obtained were further used as indices for cocoa grading into food quality, FoQ (erg < 5 mg/kg; OTA < 1 µg/kg), feed quality, FeQ (erg = 5...
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Aflatoxigenic and ochratoxigenic isolates were used to contaminate cocoa beans in this study and Ergosteol Values (EV) were assessed by means of visual inspection, Reverse Phase-High Performance Liquid Chromatography (RP-HPLC) and Gas Chromatography–Mass Spectrometer (GC–MS), respectively. Different concentrations of Aframomum danielli essential oi...
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Quantification of biofilm formation by 40 Listeria monocytogenes strains from wara soft cheese and its processing environment was assessed on glass vials surfaces. Attachement to glass surface was quantified using a crystal violet binding assay. All the 40 strains produced biofilms after 48 and 72 h incubation at 37°C. No biofilms were formed at 24...
Article
Study of physical properties and nutritional components of whole and powdered wild pepper seeds (Erythrococca anomala.Benth) revealed that the seeds have good parameters for machineability. The contents of moisture, ash, protein, lipid and carbohydrate and major and trace minerals were found in functional quantities, while the heavy metals were neg...
Article
Ready-to-Eat (RTE, street) foods sold at Bodija market, Ibadan, Nigeria were examined. Methods used for the preparation of RTE foods were followed in establishing relevant Critical Control Points (CCPs). Hazard analyses were carried out on all foods examined from the raw material up to the finished product levels. Two cereal-based products (kokoro...
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The effects of adding different concentrations of Aframomum danielli (powder and ethanoic extracts) on nutritional, physico-chemical and sensory properties of wheat flour bread were examined. A. danielli powder – 2, 4 and 6%, and ethanolic extract (0.1 and 0.2%) were added, respectively, to flour. Using alveograph and consistograph, the physical pr...
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Sixteen colonies of lactic acid bacteria (LAB) were selected and screened for their ability to produce bacteriocin by agar well diffusion method using the supernatant of centrifuged test cultures. Four isolates inhibited the growth of Listeria monocytogenes and Escherichia coli . Lactobacillus plantarum (6) and Lactobacillus brevis (5) were the mos...
Article
Genetically improved maize variety (TZRS-W) grains were used to produce mumu– a roasted maize meal. The grains were divided into six treatment groups namely: non-soaked, non-cooked (NSNC); non-soaked, cooked (NSC); soaked, non-cooked (SNC); soaked, cooked (SC); germinated non-cooked (GNC); and germinated, cooked (GC). Each group was roasted in the...
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The necessity to develop and enhance the value of alternative sources of starch in Nigeria in order to boost import substitution of specialty starches serve as impetus to this study. Starch was isolated from mature green breadfruit and acetylated using three types of alkalizing reagents at two temperature regimes. Extent of modification was apprais...
Article
Kunu-zaki, a non-alcoholic beverage, was produced using modified traditional method incorporating Daniellin (TM). Treated samples kept for 5 days at ambient condition (26(+)-2 C) while untreated samples kept for only 1 day. Protein contents and calorific values of kunu-zaki treated with Daniellin (TM) (0.5 to 5.0%, w/v) were between 5.76 to 5.93% a...
Article
Protein-enriched mumu was produced using maize supplemented with soybeans or groundnut. Supplementation of maize with groundnut or soybeans at the ratios of 85:15, 80:20, 75:25 and 70:30, respectively to produce maize:groundnut or maize:soybean blends was carried out. Proximate compositions and sensory evaluation of the blends were determined. The...
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In this study, attempts were made to artificially contaminate cocoa powder and cocoa beverage with standard ochratoxin A at 100, 120, 140, 160, 180 and 200 ppb. All these levels were far above the EU regulatory limits of 2 ppb for cocoa and cocoa products. Concentrations of Aframomum danielli essential oils used were 0, 500, 1000, 2000, 3000 ppm an...
Article
Seeds of Garcinia kola were analysed for mineral and amino acid composition. Solvent extraction and fractionation of bioactive components of the seeds were accomplished using Soxhlet extractor and vacuum liquid chromatography, respectively. Fractionated extracts were assessed for sensory and antimicrobial activities. The seed contained varying amou...
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Characterization of preliminary phytochemical components of Aframomum danielli seeds was determined. Fractions of the seeds obtained by vacuum liquid chromatographic process were tested for antimicrobial activities. Phytochemical screening revealed the presence of alkaloids, cardenolides, carotenoids and polyphenols. All fractions obtained from the...
Article
Using a pressure of 1800 kg/cm2 and 150 μg/mL of α-terpinene for 1 hr at 25°C, growth reduction of 6 log cycles after incubation at 30°C/24h, was found with S. cerevisiae. Without pressurization, S. cerevisiae was resistant to 300 μg/mL. and 600 μg/mL α-terpinene but was sensitive 1250 μg/mL. Reduction of 3 log cycles in viable cell counts was foun...
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3 Abstract: Petroleum ether fractions of Aframomum danielli obtained by vacuum liquid chromatography were characterized using ultraviolet, infrared and proton nuclear magnetic spectroscopy. Antioxidant activities of the fractions were obtained by their reducing power. Among the fractions, fraction F3 had the strongest antioxidant property on the ba...
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Slabs (11.55cm) of pineapple were immersed in sucrose solutions of 52B, 60B and 68B (w/w) at 25C for 12h. Osmosed pineapple slices were subsequently air-dried at 60C for 72h. Adsorption isotherms of osmo-dried pineapple slices were determined at 20C and 40C, using the gravimetric-static method. Isotherms were modeled using Brunnauer, Emmet and Tell...
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Aframomum danielli antioxidant extract showed reduction in rancidity, fungal count but better sensory attributes in roasted peanut (Arachis hypogea). Roasted peanut samples treated were with different concentrations (100, 200, 300 and 400 ppm) of A.danielli antioxidant extract. Samples were packed into high density polyethylene (100 ìm) and stored...
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Extracts of the spices, Aframomum melegueta (family, Zingiberaceae) and Xylopia aethiopica (family, Anonaceae) exhibited antioxidant effects on lard and groundnut oil with A. melegueta having an antioxidant effectiveness (AE) of 57.0% in lard and 54.3% in groundnut oil at 300ppm. AE was obtained from: % MathType!MTEF!2!1!+- % feaafeart1ev1aaatCvAUf...
Article
When maize and soybeans were stored under ambient conditions (26ǃ C/RH 75&#455%) using the ground material of the spice Aframomum danielli (family Zingiberaceae), mouldiness and insect infestation were controlled for 15 months. After eight weeks of storage, chemical compositions of maize and soybeans (moisture content, mc 10.0%) treated with 4.0%,...
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(family Zingiberaceae) for Listeria monocytogenes LCDC 81861 was 390 ppm. No viable cells were found after a 4 h exposure of Bacillus cereus (initial concentration 103 cfu/ml) to 500 ppm of A. danielli (aqueous solution) when the concentration of untreated control cells was 3.9×106 cfu/ml. The MICs of A. danielli for some food spoilage yeasts (Cand...
Article
Essential oil monoterpenes (α-terpinene, (+)-limonene, α-pinene, 1,8-cineole) of the spice Aframomum danielli were tested for in vitro antifungal activities against some food spoilage yeasts (Torulopsis candida, Candida tropicalis, Kluveromyces thermotolerans, K. fragilis, Hansenula anomala and Pichia pastoris) and mycotoxigenic moulds (Aspergillus...
Article
A study was conducted to determine the levels of residual aflatoxin B1, G1, and G2 in poultry feeds and products. The results showed that aflatoxin B1 in feedstuffs was present in the range from 31.7 to 66.7 μg/kg, while aflatoxin G1 and G2 were absent in them. Mean aspergillus flavus population ranged from 0.001 to 2.8 × 105 cfu/g. Production perf...
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Garcinia kola, (a herb grown in Nigeria; calorific value 358.54 k.cal/100 g) inhibited in vitro lipid peroxidation of rat liver homogenate in a dose dependent manner. The inhibitory activity of G.kola was not affected by heating (100 degrees C/10 min). The antioxidant component of G.kola was soluble in aqueous and ethanolic media. The active compon...
Article
The essential oil isolated from the seeds of Aframomum daniellii (Hook. f.) K. Schum. (from Nigeria) by hydrodistillation was analysed by GC and GC–MS. The essential oil contained 41 constituents, of which 29 were identified for the first time, and the major constituents of the oil were 1,8-cineole (59.8%), β-pinene (13.2%), α-terpineol (9.3%), α-p...
Article
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Successive extractions with diethyl ether and methanol of the whole seeds of the spice Aframomum danielli yielded diethyl ether extract (ADEE), 13.9%, and methanol extract (ADM), 3.4%, respectively. Similarly, reextraction of the defatted seeds of A. danielli successively with diethyl ether and methanol yielded extracts DFADEE (7.9%) and DFADM (6.7...
Article
Lipid oxidation is a process, which results in rancidity and deterioration of fats posing a major problem In food industry and on biological systems. Many synthetic antioxidants are used in food systems to inhibit lipid oxidation. However, the safety concerns about synthetic antioxidants have led to spurt of research on antioxidants from natural re...
Article
Within a storage period of 10 days, samples of maize and cowpea treated with lemon grass powder and essential oil showed no physical deterioration. Off-colour, off-odour and mouldiness however characterized untreated control samples of maize and cowpea. The essential oil of lemon grass also inhibited the growths of moulds like Aspergillus flavus, A...
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Samples of sundried, matured red pepper, Capsicum annum with a moisture content (MC) of 12.7-26.8 percent had on dry weight basis, vitamin C, 5.0-6.4 mg/100 g; crude protein, 0.8-1.2 percent; total soluble solids, 3.3-4.1 percent, and fungal counts of log 4.4-4.5/g. Ordinary matured red C. annum had MC, 75.7-78.2 percent vitamin C, 36.1-38.5 mg/100...
Article
Bacteriological examination of the natural waters in which clams (Egeria radiata) grow in the Cross River in Akwa Ibom State, Nigeria, showed that the waters were generally of an unacceptable quality for growing market shellfish. Egeria radiata samples collected from the waters were also found to be highly contaminated by bacteria. Mean log total a...
Article
During the production of 'tuwo' from laboratory-contaminated corn (AFB1:150 mcg/kg) and sorghum (AFB1:87.5 mcg/kg) grains, reductions in the aflatoxin-B1 levels of pastes boiled for 30 min and 60 min were found to be 68.0% and 80.8%, respectively. In the preparation of 'ogi' from contaminated corn and sorghum grains, reductions of about 72.5% and 7...
Article
'Aadun' and 'kokoro' were produced from maize grains by processes involving roasting, kneading, spicing, and frying. 'Aadun' with a moisture content (MC) of 12.5%, pH 5.3 had the following composition: crude protein, 7.49%; fat, 28.5%; total carbohydrate, 60.0%; ash, 3.0% and energy value, 3,600 kcal/kg whilst 'kokoro' with a MC of 16% and pH 5.1 h...
Article
The spice, Aframomum danielli, on a wet weight basis with a moisture content of 10.5%, protein content of 8.2% (dry matter basis) and caloric value of 469.7 kcal/100 g, contains in varying amounts, minerals like calcium, magnesium, sodium, manganese, phosphorus, zinc and copper. Amino acids found in varying concentrations in A. danielli include L-T...
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In the maintenance of shelf-stability, nutritional and organoleptic properties of ground melon 'egusi'-Colocynthis citrullus L., vacuum-packaged samples were found to be better than unpackaged samples and samples treated with 0.2% butylated hydroxyanisole (BHA) and 0.02% BHA + 0.045% sodium metabisulphite. After 56 days at 35 degrees C, stored samp...