Nazik Mustafa - Academia.edu (original) (raw)

Papers by Nazik Mustafa

African Journal of Food, Agriculture, Nutrition and Development, Oct 7, 2011

2 to 1.6×10 3 cfu/ ml. Total coliforms ranged from 3 to 1400 MPN/100 ml. Bacillus spp., Staphyloc... more 2 to 1.6×10 3 cfu/ ml. Total coliforms ranged from 3 to 1400 MPN/100 ml. Bacillus spp., Staphylococcus aureus, Escherichia coli and Salmonella spp. were detected in 70, 68.3, 6.6, and 5% of samples, respectively. Pseudomonas spp. and several Enterobacteriaceae species were isolated including Proteus spp., Klebsiella spp., Hafnia spp. and Escherichia spp. The minimum pH of Um-Jingir samples was 3.4, whereas the highest pH was 6.7. Alteration of the classic formula by omitting yoghurt and replacing it with citric acid showed that the nutritional value of Um-Jingir could be reduced to meet the low price requirements. Observation of Um-Jingir vending places showed that they were crowded, unclean and the sanitary levels were low. In spite of the high nutritional value of this product and its importance for low income consumers, the established results in addition to close observation of Um-Jingir marketing conditions indicated that consumption of street vended Um-Jingir might have negative effects on public health. Therefore, vending this type of food requires more attention from health authorities, better educational programmes for vendors and improvements of preparation and handling environment.

Journal of Veterinary Medicine and Animal Production, Sep 27, 2018

Journal of Food Safety, Oct 22, 2008

Aspongopus viduatus (melon bug) oil is insect oil used as famine food in western parts of Sudan a... more Aspongopus viduatus (melon bug) oil is insect oil used as famine food in western parts of Sudan and has traditional medicinal uses. The antibacterial activities of melon bug crude oil, silicic acid column purified oil and phenolic compounds-free oil were determined by agar diffusion assay against seven bacterial isolates, four of them are food-related bacterial species: Staphylococcus aureus, Salmonella enterica serovar Paratyphi, Escherichia coli and Bacillus cereus, and the three other isolates are: B. subtilis, Enterococcus faecalis and Pseudomonas aeruginosa. The main constituents of this oil were examined. The crude oil and the phenolic compounds-free oil showed high antibacterial activities against some test species while the silicic acid column purified oil showed no antibacterial activity. The study highlights the possibility of using this oil in food preservation. PRACTICAL APPLICATIONS In this study, the antimicrobial properties and main components of insect oil (Aspongopus viduatus) were identified. The oil has traditional medicinal

Journal of Veterinary Science & Medical Diagnosis, Mar 23, 2021

African Journal of Microbiology Research, 2015

Medical and health science colleges have firm links to hospitals and health services centres thro... more Medical and health science colleges have firm links to hospitals and health services centres through clinical training activities. Such colleges are expected to house microorganisms of nosocomial-infection significance that can be transmitted to and from students’ hands and bodies through publicly used equipment, including food and drink vending machines, elevators and computer keyboards. This study aimed to investigate the presence of human body indicator bacterial species on three types of publicly used surfaces in medical and health sciences colleges. Swab samples were collected aseptically from 30 computer keyboards, 10 digital control panels of food vending machines and 10 elevators in the buildings of medicine, dentistry, pharmacy and health sciences colleges over a period of five weeks. Ten surfaces were sampled each week, in the morning and the afternoon (n= 20/week) and cultured in selective and general media. Forty-three percent of surfaces had relatively elevated levels o...

Polish Annals of Medicine, 2014

Recent patents on food, nutrition & agriculture, 2015

Citrus essential oils (CEOs) are gaining popularity in the food industry. This review summarises ... more Citrus essential oils (CEOs) are gaining popularity in the food industry. This review summarises the chemical compositions of citrus essential oils (monoterpenes, sesquiterpenes and oxygenated derivatives) and explores their antimicrobial activities for use as preservatives in addition to highlight their uses as flavouring and antioxidant agents. The myriad uses of these compounds reflect a global trend towards the increased consumption of natural products. However, challenges such as production technologies, oxidation, chemical contamination by pesticides and consumption induced allergic effects still need to be addressed. Patents identified with CEO uses in food processing and those describe techniques of extraction are presented.

Food Additives & Contaminants: Part B, 2016

Nitrite intake from locally processed meat in Khartoum, Sudan was estimated and compared to estab... more Nitrite intake from locally processed meat in Khartoum, Sudan was estimated and compared to established safety levels. For this purpose, 90 locally processed meat samples were collected randomly from retail outlets and analysed for nitrite levels according to the British standard 1992 protocol and 350 purchasers at retail outlets were questioned about their consumption pattern. Nitrite concentrations in all samples were below the Sudanese maximum limit (ML) of 100 mg kg(-1) for nitrite in meat products. Dietary exposure to nitrite for adults and children was estimated to be in the range of 0.026-0.128 and 0.107-0.511 mg kg(-1) bw day(-1), respectively. This implies that nitrite intake for a significant number of consumers, especially children, are likely to exceed the established acceptable daily intake (ADI) of 0-0.07 mg kg(-1) bw/day of JECFA, in spite the fact that meat samples collected complied with the current ML.

Recent Patents on Food, Nutrition & Agriculture, 2015