فهرست مطالب

Journal of Food Quality and Hazards Control
Volume:7 Issue: 3, Sep 2020

  • تاریخ انتشار: 1399/07/07
  • تعداد عناوین: 8
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  • V. Ranaei, Z. Pilevar, H. Hosseini* Pages 116-118
  • I.B. Ofomata, I.O. Nwankwo*, A.J. Ogugua, E.V. Ezenduka, J.A. Nwanta, R.I. Obidike Pages 119-127
    Background

    Polycyclic Aromatic Hydrocarbons (PAHs) are among hazardous chemicals that may endanger food safety. In Nigeria, hides and skins of animals are edible and used in dishes. So, this study investigated the levels of PAHs in singed and unsinged hides and skins of animals slaughtered at three districts abattoirs (Obosi, Uga, and Kwata) in Anambra State, Nigeria.

    Methods

    Using gas chromatography, the levels of PAHs were determined in 120 samples of raw and singed cattle hides and goat skins. Data were analyzed using the SPSS Windows software package (version 20.0).

    Results

    The total PAHs of raw and singed cattle hides were respectively 0.80 and 12.33 µg/kg for Obosi district, 0.56 and 6.96 µg/kg for Uga district, and 8.30 and 16.24 µg/kg for Kwata district. Furthermore, the total PAHs levels in raw and singed goat skins were respectively 2.75 and 9.00 µg/kg for Obosi district, 1.76 and 6.42 µg/kg for Uga district, and 1.30 and 5.19 µg/kg for Kwata district. The levels of some PAHs in singed hides and skins were significantly (p<0.05) higher than the unsinged samples.

    Conclusion

    The materials used in singeing may increase the concentration of PAHs in singed hide and skin. Although, the known carcinogenic PAHs in the samples were below the maximum permissible level, it is probably of public health concern due to the associated health risk on cumulative exposure via the dietary consumption of such contaminated local meals.

    Keywords: Polycyclic Aromatic Hydrocarbons, Skin, Food Safety, Nigeria
  • R. Omari*, G. Anyebuno Pages 128-135
    Background

    Complementary foods are given to infants when breast milk alone becomes insufficient in meeting their nutritional needs. The major objective of this study was to assess the prevalence of Aflatoxins (AFs) in Weanimix complementary foods purchased from shops in Accra (Ghana), and to estimate risk of liver cancer development in infants. 

    Methods

    In total, 32 samples of Weanimix were purchased from shops in Accra, an urban centre and analyzed for AFs by Reverse-Phase High Performance Liquid Chromatography (RP-HPLC). Previously published data on levels of AFs in Weanimix prepared in rural households were also collected. The data was analyzed to estimate infants’ daily exposure to AFs as well as the risk of liver cancer development.

    Results

    AFs levels of 18.8% of samples were above the maximum permitted limit of 10 µg/kg. The minimum and maximum levels of total AFs detected in all samples were 2.51 and 98.87 µg/kg, respectively with a mean value of 16.43 µg/kg. Exposure assessment showed that the minimum and maximum daily AFs exposures were 0.044 and 2.805 µg/kg bw/d, respectively for Weanimix from rural households; these rates for Weanimix purchased from urban shops were 0.014 and 0.55 µg/kg bw/d, respectively. The chances of liver cancer development would increase to 0.6 per year if infants were fed on Weanimix prepared in rural households with minimum AF level of 7.9 µg/kg.

    Conclusion

    The infants fed on Weanimix prepared in rural households would be at a higher risk of AF exposure and liver cancer development than infants fed on Weanimix purchased from urban shops of Ghana.

    Keywords: Aflatoxins, Risk Assessment, Infant Food, Ghana
  • R. Gaglio*, L. Botta, G. Garofalo, G. Guida, L. Settanni, F. Lopresti Pages 136-141
    Background

    Active packaging represents a defining strategy to improve food quality and safety of the packaged foods. This study aimed to evaluate the in vitro ability of commercial biopolymeric foams, namely Mater-Bi (MB), activated with 20% of carvacrol, to develop a completely biodegradable and compostable packaging to inhibit the growth of spoilage and pathogenic yeasts.

    Methods

    MB foams, with and without carvacrol, were produced by melt mixing and the foaming process was performed in a laboratory press. The antifungal activity of foams containing carvacrol was tested applying the disk diffusion method. Statistical analysis was done using XLStat software version 7.5.2 for Excel.

    Results

    Statistically significant differences (p<0.05) were observed between sensitivity of the tested yeasts. Candida zeylanoides 4G362 and Rhodotorula mucilaginosa ICE29 were found to be the most sensitive strains with a clear zone of 28.9±0.1 and 29.0±0.1 mm, respectively. However, Aureobasidium pullulans was the least sensitive yeast strain, showing clear zone of 20.4±0.3 mm.

    Conclusion

    This study provided, for the first time, an in vitro analysis of the antifungal activity of MB foams activated with carvacrol against yeasts that commonly contaminate raw materials and processed foods. In conclusion, this biopolymer was highly effective against all the yeasts used as indicators strains.

    Keywords: Biopolymers, Carvacrol, Yeasts, Disk Diffusion Antimicrobial Tests, Food Packaging
  • R. Banda, J. Nduko*, J. Matofari Pages 142-148
    Background

    Some microorganisms can adhere to food handling surfaces forming biofilms that pose a safety challenge. This study was done to evaluate bacterial biofilm formation in milking equipments in Lilongwe, Malawi.

    Methods

    Pooled milk (n=54) and water (n=60) samples were collected from households and milk bulking groups in Lilongwe, Malawi. Swabbing (n=46) and rinsing (n=16) were done on milk handling containers after cleaning. Biofilm determination on the containers was done by detecting biofilm indicator bacteria, including Bacillus spp., Salmonella spp., and Pseudomonas spp. The strength of biofilm was determined by the tube method. Data were analyzed by SAS software version 9.1.3.  

    Results

    Prevalence rates of Gram-negative rods were significantly (p<0.05) higher than the Gram-positive rods and the Gram-positive cocci. Of the 176 cases, contamination rates were 36 (20.4%), 32 (18.2%), and 18 (10.2%) for Salmonella spp., Bacillus spp., and Pseudomonas spp., respectively. The biofilm indicator organisms were significantly (p<0.05) more prevalent in dairy farmer households compared with the milk bulking centers. Fourteen out of 86 (16.3%) microbial isolates formed strong/high biofilms, whereas 18 out of 86 (20.93%) of isolates did not form any biofilm. The rate of isolates forming strong/high biofilms in households (17.6%) was significantly (p<0.05) higher than that of milk bulking centers (11.1%).

    Conclusion

    Biofilm formation on milk handling container surfaces in Lilongwe, Malawi could serve as a source of microbial pathogens and spoilage organisms.

    Keywords: Biofilms, Bacteria, Milk, Equipment, Supplies, Food Safety, Malawi
  • M. Hamiroune*, M. Dahmane, A. Charef, H. Cheniguel, H. Foughalia, K. Saidani, M. Djemal Pages 149-156
    Background

    Some animal infectious diseases such as tuberculosis, hydatidosis, and fascioliasis cause public health concerns and also significant economic losses. The goal of this study was to assess the rate of fascioliasis, hydatidosis, and tuberculosis in domestic animals during post-mortem inspection at Jijel slaughterhouse, North-Eastern Algeria.

    Methods

    The present study was carried out from March 2017 to February 2018, on 6 520 animals slaughtered at Jijel slaughterhouse. It was based on post-mortem inspection of livers and lungs by visual inspection, palpation, and incision. The statistical analysis was performed using open source software R 2017 and Microsoft Office Excel software.

    Results

    The prevalence rate of fascioliasis (6.9%) was significantly (p<0.001) higher than that of hydatidosis (4.8%) and tuberculosis (1.0%). Regarding all three studied diseases in the slathered animal, the prevalence rate of the diseases in cattle was significantly higher than one in sheep and goats. Three peaks in the rate of studied diseases were recorded during March to May 2017, which corresponds to spring.

    Conclusion

    Considerable prevalence rate of fascioliasis, tuberculosis, and hydatidosis in domestic animals slaughtered at the Jijel slaughterhouse seems to be an important indicator of lack of inspection, preventive, and curative treatments of animals in this region.

    Keywords: Animals, Domestic, Abattoirs, Food Inspection, Animal Diseases, Public Health, Algeria
  • S. Lasram*, Z. Hamdi, A. Ghorbel Pages 157-161
    Background

    Ochratoxin A (OTA) and Aflatoxin B1 (AFB1) are toxic secondary  metabolites produced by certain mold species. In this primarily survey, we examined the OTA and AFB1 contamination of pearl millet grains distributed in Tunisia.

    Methods

    Twenty-five pearl millet (Pennisetum glaucum L.) samples from different regions of Tunisia were analyzed by High Performance Liquid Chromatography coupled with fluorescence detector in order to evaluate the contamination with of AFB1 and OTA. Statistical tests were performed with XLSTAT 2018.

    Results

    AFB1 and OTA were detected in 32 and 28% millet samples, respectively. Mean amounts of these mycotoxins in the contaminated samples were of 24.54±17.54 µg/kg for OTA and 22.72±23.09 µg/kg for AFB1. Approximately, 28 and 24% of analyzed samples were found above the European Union limits for AFB1 and OTA, respectively. The estimated daily intake of OTA and AFB1 were 3.76 and 3.89 ng/kg b.w. per day, respectively. No significantly (p>0.05) difference in OTA and AFB1 contamination rate was found between samples taken from different regions.

    Conclusion

    Consumption of millet in Tunisia might be an important contributing factor to the risk of dietary exposure to OTA and AFB1.

    Keywords: Aflatoxin B1, Ochratoxins, Chromatography, High Pressure Liquid, Pennisetum, Tunisia