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Food Quality and Hazards Control - Volume:4 Issue: 2, Jun 2017

Journal of Food Quality and Hazards Control
Volume:4 Issue: 2, Jun 2017

  • تاریخ انتشار: 1396/05/04
  • تعداد عناوین: 8
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  • Z. Salavati, A.A. Chalehchaleh *, F. Rezaei Pages 37-41
    Background
    Raw or minimally processed vegetables can be important vehicles of food-borne parasites. The main purpose of the present study was to investigate the parasitic infections in raw vegetables from Kermanshah, Western Iran and their relation with season and washing procedures.
    Methods
    From January to December 2013, raw vegetable samples were collected from Kermanshah, Western Iran. The samples were divided in three different groups, including unwashed, traditionally washed, and standard washed groups. After preparation of the samples, they were examined microscopically for the presence of parasites. Using Chi-square test, the analysis was carried out by SPSS software for windows (version 16.0).
    Results
    With regards to washing procedures of vegetable samples, intestinal parasites were found in 63.7, 49.1, and 36.9% of unwashed, traditionally washed, and standard washed samples, respectively showing a statistically significant difference (pspring>autumn>winter. However, no significant relationship was found between contamination rates and types of vegetables (p>0.05).
    Conclusion
    Raw vegetables sold in major markets in Kermanshah, Western Iran could be considered as potential vehicles for transmission of parasitic infections to consumers. Regular education must be applied about standard washing and disinfecting procedures of the raw eaten vegetables to reduce exposure of Iranian population to the vegetable-borne parasites.
    Keywords: Vegetables, Parasites, Risk Factors, Food Safety
  • M.H. Moosavy *, P. Hassanzadeh, E. Mohammadzadeh, R. Mahmoudi, S.A. Khatibi, K. Mardani Pages 42-48
    Background
    Citrus fruits have some antioxidant and antimicrobial properties. The aim of this study was to determine the chemical compounds, antioxidant, and antimicrobial activities of Essential Oil (EO) of lemon (Citrus limon) peel in vitro and in a food model.
    Methods
    The analysis of the lemon peel EO was carried out using gas chromatography-mass spectrometry. Total phenolic and flavonoid content was determined using standard protocols. The antioxidant activity of the EO was also evaluated using 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay. Antimicrobial properties of the EO were assessed against Staphylococcus aureus using the broth microdilution method. Also, barely soup was chosen as food model. Data were analyzed using SPSS Inc. software version 22.0.
    Results
    The total phenol content was 81.82±8.02 mg gallic acid equivalent/g of the EO. Also, the total amount of flavonoids in the EO of lemon peel was 11.72±1.82 mg/g rutin equivalent. Lemon peel EO showed 55.09% inhibition of DPPH, showing significant difference with control group (p
    Conclusion
    The EO of lemon peel showed considerable antioxidant and antimicrobial properties both in vitro and barley soup as food model.
    Keywords: Citrus, Oils, Volatile, Antioxidants, Staphylococcus aureus
  • M.H. Razi Jalali, E. Ahmadiara *, A. Rahimzade, M.H. Shekarian, J. Javidi Dasht-Bayaz, L. Jamshidi, A. Nikpay Pages 49-52
    Background
    Echinococcus granulosus is one of the most important zoonotic parasites having worldwide distribution. The major purpose of this study was to determine prevalence, fertility, and viability rates of Hydatid Cysts (HCs) in surgical patients and slaughtered small ruminants in Ahvaz, Iran.
    Methods
    Liver and lungs of the slaughtered sheep (n=1402) and goats (n=3251) in Ahvaz, Iran were inspected to find HC. Also, sampling was carried out from surgical patients in Golestan Hospital of Ahvaz. Fertility and viability of cysts were determined based on the standard protocols. Data were statistically analyzed by SPSS software.
    Results
    Totally, 94 (6.7%) sheep and 83 (2.5%) goats were infected with HC. Also, the younger than 1 year old animals showed less infection rate than older animals (p˂0.05). The number of fertile cyst among total 1402 sheep and 3251 goats slaughtered in Ahvaz were 81 and 33, respectively; whereas, the viable protoscoleces number pertaining to the fertile cysts for sheep and goats were 61 and 9, respectively. Five cases of infected human patients were recorded during the study period which their cysts were isolated from liver.
    Conclusion
    It seems to need more efforts to control echinococcosis in Ahvaz, Southwest of Iran by raising the public awareness. Also, hygienic disposal of the infected organs (especially liver and lungs) with HC would be effective.
    Keywords: Echinococcosis, Public Health, Food Safety, Iran
  • M. M. Azizkhani *, F. Tooryan Pages 53-57
    Background
    Milk can provide a good medium for growth and proliferation of various spoilage and pathogenic microorganisms. The main aim of this study was to evaluate the chemical and microbial quality of Iranian commercial pasteurized milk samples at their expiration date.
    Methods
    Hundred samples of pasteurized milk packaged in polyethylene pouches were randomly collected from local markets of Amol, North of Iran. Acidity, pH, total viable, coliforms and Escherichia coli counts were carried out at expiration date of the samples according to the standard procedures. Data were statistically analyzed using SPSS software (version 16.0, SPSS Inc., Chicago, IL, USA).
    Results
    The mean value of pH, acidity, and sensory score of the samples were obtained as 6.6, 0.15 g lactic acid/100 ml, and 6.4, respectively. Also, the mean value of total viable count, coliforms and E. coli counts of the samples were 4.11, 0.77, and 0.01 log10 colony forming unit/ml, respectively. No significant relationship (p>0.05) was found between various studied parameters and different milk brands.
    Conclusion
    Storage of milk pouches out of refrigerator in supermarkets of Iran must be strictly avoided in order to improve chemical and quality of this product. Also, proper pasteurization process and reduction of post-pasteurization contamination are the other keys to produce high-quality pasteurized milk.
    Keywords: Milk, Food Quality, Food Preservation, Food Safety
  • R. Khoshbakht *, S. Seifi, A. Karimi, M. Khosravi Pages 58-62
    Background
    Food animals such as different rearing birds can transmit zoonotic enteropathogenic bacteria, which exist in their intestinal microbiota. This research was designed in order to molecular identification of Campylobacter, Arcobacter, as well as Salmonella in Japanese quail (Coturnix japonica) reared in farms of Northern Iran.
    Methods
    Total of 100 cloacal samples were collected from 20 different quail farms. After extraction of total DNA, the samples subjected to molecular detection of the Campylobacter, Arcobacter, and Salmonella using polymerase chain reaction. By Chi-squared, all statistical analyses were performed by SPSS Inc., Chicago, IL (v. 18.0).
    Results
    Totally, the prevalence rates of Campylobacter, Salmonella, and Arcobacter in samples were 95, 65, and 0%, respectively. The prevalence of Salmonella spp. in rural farms was significantly (p
    Conclusion
    High occurrence of Campylobacter spp. and Salmonella spp. were found in rearing quail populations of Mazandaran province, Northern Iran. These enteropathogens can contaminate food products obtained from the birds indicating their public health importance.
    Keywords: Coturnix, Food Microbiology, Polymerase Chain Reaction, Food Safety