Hassan Gandomi; Azra Farhangfar; Afshin Akhondzadeh basti; Ali Misaghi; Negin Noori
Volume 2, Issue 1 , May 2019, Pages 1-5
Abstract
Lactobacillus plantarum was the most common species in the microflora of artisanal Siahmazgi white brined cheese with 41.6% occurrence among the total isolated LAB. In this study, the attachment properties of 5 different L. plantarum strains isolated from Siahmazgi traditional cheese were evaluated by ...
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Lactobacillus plantarum was the most common species in the microflora of artisanal Siahmazgi white brined cheese with 41.6% occurrence among the total isolated LAB. In this study, the attachment properties of 5 different L. plantarum strains isolated from Siahmazgi traditional cheese were evaluated by in vitro tests including auto and co-aggregation, hydrophobicity, and cell adhesion. A relatively high amount of auto-aggregation ranged from 58.21 to 73.99% was seen in selected isolates. Co-aggregation was highly variable from 1.46 to 49%, depending on the pathogenic bacteria and L. plantarum isolates. Hydrophobicity was also highly different in tested strains ranging from 6.58 to 73.3%. Two isolates showed great affinity about 73% to chloroform. All the isolates presented high adhesion to Caco-2 cell line up to about 90%. In conclusion, five L. plantarum isolates showed appropriate attachment properties and could be good candidates for further studying, including safety evaluation, that support their use as probiotics.
Ali Zabihi; Afshin Akhondzadeh basti; Ghasem Amoabediny; Akram Sadat Tabatabaee Bafroee; Ali Khanjari; Javad Tavakkoly Bazzaz
Volume 2, Issue 1 , May 2019, Pages 6-11
Abstract
Foodborne diseases are considered as one of the main problems of public health. Escherichia coli O157H7 are responsible for major outbreaks of bloody diarrhea and hemolytic uremic syndrome (HUS) throughout the world. The mortality is originated from the production of a Shiga toxin (Stx) by these bacteria. ...
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Foodborne diseases are considered as one of the main problems of public health. Escherichia coli O157H7 are responsible for major outbreaks of bloody diarrhea and hemolytic uremic syndrome (HUS) throughout the world. The mortality is originated from the production of a Shiga toxin (Stx) by these bacteria. Garlic essential oil (GEO) has antibacterial effects on many food-borne pathogens. Therefore, this study was aimed to evaluate the antibacterial activity of the Allium sativum L. EO and its nanoliposomal form on the virulence of E. coli O157:H7. Reverse passive latex agglutination test was used to detect Shiga toxin2 (Stx2) production after exposure to sub-inhibitory concentrations of free and nanoencapsulated EO. Also, the effect of sub-inhibitory concentrations of free and nanoliposomal form of GEO was evaluated on Stx2 gene expression and the relative transcriptional level of Stx2 gene was determined by real-time PCR. It was found that the sub-inhibitory concentrations of liposomal form of EO (50 and 75%) had a significantly higher inhibitory effect on Stx2 titer than its free form (p<0.05). Also, increasing the concentration of EO and nanoencapsulated EO significantly reduced Shiga toxin 2 gene expression according to control. Using 75% sub-inhibitory value of free and nanoliposome GEO, the relative transcriptional level of Stx2A gene was reduced from 0.938 to 0.667 and 0.931 to 0.659, respectively. Based on our findings, different methods of nanoencapsulation should future study to improve nanoliposome efficacy to suppress toxin production on expression level.
Maryam Naderi; Ahmadreza Dorosty Motlagh; Abolghassem Djazayery
Volume 2, Issue 1 , May 2019, Pages 12-15
Abstract
Osteoporosis is now recognized as a community health problem, and its complications can impose a lot of financial and psychological damage to the community. This study was conducted to investigate the relationship between food insecurity with osteoporosis in 40 to 50-year-old non-menopausal women. In ...
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Osteoporosis is now recognized as a community health problem, and its complications can impose a lot of financial and psychological damage to the community. This study was conducted to investigate the relationship between food insecurity with osteoporosis in 40 to 50-year-old non-menopausal women. In this study, 280 non-menopausal women aged 40 to 50 years old referred to the Alborz Bone Mineral Density Center (Karaj, Iran) in a case-control study were compared in two groups of 140 with osteoporosis and normal bone in 2018. The Household Information Insecurity Access Scale (HFIAS) was completed. Finally, the data were analyzed using χ2 and one-way ANOVA and correlation. In this study, there was a significant relationship between food security and osteoporosis (p<0.001). 77.9% of healthy subjects and 87.1% of people with osteoporosis had food insecurity. The associated factors with osteoporosis were the age (p=0.01), number of children (p=0.002), number of breastfeeding months (p<0.001), age of menarche (p=0.001), exposure to direct sunlight (p=0.05), physical activity (p<0.001), history of osteoporosis (p=0.018), economic status (p<0.001) and smoking (p=0.02). After the adjustment of confounding factors in the regression analysis, predictive factors for osteoporosis were the age of menarche, physical activity, and household economic status. Considering the factors associated with osteoporosis and the association of food insecurity with osteoporosis in non-menopausal women, provision of proper nutrition guidelines and preventive measures seem to be necessary.
Mina Kargozari; Hassan Hamedi
Volume 2, Issue 1 , May 2019, Pages 16-30
Abstract
Novel concepts of smart/intelligent, active and eco-friendly food packaging systems, are getting much more attention these days. There have been new functionalities ascribed to the packaging, mostly derived from recent consumer's request for organic and clean-label –high-quality products. This ...
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Novel concepts of smart/intelligent, active and eco-friendly food packaging systems, are getting much more attention these days. There have been new functionalities ascribed to the packaging, mostly derived from recent consumer's request for organic and clean-label –high-quality products. This paper throws light on the current advances in antimicrobial active packaging of fresh meat and meat-based products. Among the classes of antimicrobials proposed and tested with remarkable antimicrobial power against microorganisms involved in meat spoilage and meat-borne diseases, we focused on plant-derived essential oils (EOs) and nanoparticles (NPs) as they were attractive meat protecting agents according to the literature review, we have made. The various technologies and methods for incorporating antimicrobial compounds into the package including embedding for controlled release, immobilization, and layer-by-layer deposition, photographting and their feasible approach for active meat packaging are surveyed and scrutinized.
Fatemeh Hedayati Rad; Anousheh Sharifan
Volume 2, Issue 1 , May 2019, Pages 31-36
Abstract
Xylitol is a pentahydroxypentane, which has high functional properties in food and drug industries. Biotechnology method has been investigated to overcome the drawbacks of xylitol chemical manufacturing. The effect of temperature, agitation speed, pH, and xylose concentration variables on xylitol production ...
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Xylitol is a pentahydroxypentane, which has high functional properties in food and drug industries. Biotechnology method has been investigated to overcome the drawbacks of xylitol chemical manufacturing. The effect of temperature, agitation speed, pH, and xylose concentration variables on xylitol production by Candida kefyr (ATCC 38296) was studied. The qualitative and quantitative of produced xylitol were evaluated by thin layer chromatography and high-performance liquid chromatography, respectively. The process optimization was done using response surface methodology (RSM) combine statistical experimental factorial designs. The 3D plots of xylitol production were proven to have the dependency and interaction between variables. The predicted results were close to the experimental results, which showed that the quadratic equation obtained from RSM was efficient. The dependency of xylitol yield on the interaction between variables was proven. Optimal levels of process variable were temperature of 28.15ºC, agitation speed of 132.34 rpm, pH value of 6.05, and xylose concentration of 58.90 g/L. On the third day of fermentation, the maximum yield was achieved (15.88 g/L). This is the first report of producing xylitol by Candida kefyr which has strong potential for bioconversion of xylose to xylitol with maximum yield and properties. This natural polyalcohol has desirable physicochemical and functional properties either in foods or in medicines.
Azam Movahedi; Ariyo Movahedi
Volume 2, Issue 1 , May 2019, Pages 37-41
Abstract
Pediatric obesity is going to be one of the major risk factors in our era. It might have adverse effects on all aspects of child’s health. It could affect both physically and mentally and cause emotional suffering as well. It is shown that obesity could decrease cognition, but its relationship ...
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Pediatric obesity is going to be one of the major risk factors in our era. It might have adverse effects on all aspects of child’s health. It could affect both physically and mentally and cause emotional suffering as well. It is shown that obesity could decrease cognition, but its relationship with emotional intelligence (EI) is unclear. In this cross-sectional study, the relationship between the child’s weight and level of EI has been investigated. Seventy-one children with average age 9.2±2.3 years old (32 girls and 39 boys) of volunteer parents who have come to counseling clinic were joined in this study. Anthropometrical information of children including BMI for age Z score was analyzed by using Anthro Plus software. Demographic information such as gender, year of birth, household income, and parental educational status were obtained by using common SES questionnaire. Emotional intelligence of children was obtained by using “Trait Emotional Intelligence Questionnaire – Child Short Form” (TEIQue-CSF). A significant negative correlation between BMI and EI score was seen in both genders (r2=0.33, p=0.001). A similar pattern was also noticed for both boys and girls. Despite the similarity of this pattern in both genders, to some extent boys showed a stronger negative relationship between their BMI and EI score (Girls: r2=0.293, p=0.001; Boys: r2=0.388, p=0.001). Based on the present study, overweight and obesity are associated with a higher EI score in both genders, which shows the importance of weight effect on EI.
Fatemeh Karami; Marjan Ghodsi; Mohammad Shahmohammadi
Volume 2, Issue 1 , May 2019, Pages 42-45
Abstract
Human brain tumors are the leading cause of cancer induced death owing to the late diagnosis in higher grades and failure to be successfully controlled. Determining the main risk factors toward higher grades of the tumor can dramatically decrease the mortality rate of benign brain tumor patients. The ...
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Human brain tumors are the leading cause of cancer induced death owing to the late diagnosis in higher grades and failure to be successfully controlled. Determining the main risk factors toward higher grades of the tumor can dramatically decrease the mortality rate of benign brain tumor patients. The present study was conducted to compare the dietary habits between benign and malignant brain tumor patients. Three demographic, physical activity and dietary regimen’s specific questionnaires were filled for 50 high grade glioma and 50 meningioma patients. Obtained data were analyzed using SPSS 22.0 (SPSS Inc, IL, USA). A p-value less than 0.05 was considered as significant. There was a significant association between using of fast foods and high-grade glioma tumors (p-value=0.007). In contrast, the frequency of using dairy products, sea foods, fruits, and vegetables besides physical activity was not meaningfully different between two malignant and benign patient groups. Finding of this study regarding the association of fast foods with malignant brain tumors is further support on the role of Trans and saturated fatty acids in the rate of cancer evolution. However, further investigations are required to determine whether disruption in blood brain barrier induced by frequent consumption of saturated fatty acids enriched food occurs before or after malignant cellular transformation.
Fatemeh Majzoobi; Fatemeh Radkhouy; Negar Norouzi; Shaghayegh Naziri Monfared; Behnood Abbasi
Volume 2, Issue 1 , May 2019, Pages 46-52
Abstract
Irritable bowel syndrome is the most common gastrointestinal functional disorder accompanied by symptoms such as abdominal pain and changes in intestinal habits. Lack of proper biochemical criteria for diagnosis, as well as a lack of proper understanding of the pathophysiology of this disease, complicates ...
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Irritable bowel syndrome is the most common gastrointestinal functional disorder accompanied by symptoms such as abdominal pain and changes in intestinal habits. Lack of proper biochemical criteria for diagnosis, as well as a lack of proper understanding of the pathophysiology of this disease, complicates diagnosis of this disease and undermines the serious efforts to discover the proper drug for it. The present treatments including medical treatments which are related to some side-effects such as dyspepsia, heartburn, headache, bradycardia, anorexia, weakness and fatigue and diet therapy. The aim of this study was to summarize the results of previous studies on the effect of low-FODMAP diet on the improvement of digestive symptoms and nutritional status in patients with IBS. Electronic literature searches were conducted on PubMed, Web of Science and Google Scholar until May 2019. The search was conducted with the following words “FODMAP” or “low-FODMAP diets”, in combination with “gastrointestinal symptoms”, “diarrhea”, “constipation”, “dyspepsia”, “bloating”, “burp”, “heart burn”, “nausea” and “intestinal cramp” among randomized clinical trials. Our search was supplemented with the search of publisher databases Elsevier, Wiley Online and SpringerLink and for any pertinent studies, we screened the references of all included studies. Eligibility criteria included: randomized controlled clinical trial studies published in peer-reviewed journals and studies that used low-FODMAP diets as an intervention. In the total of 5 studies were done on the 299 adults who meet the inclusion criteria. According to the consumption of the results, the low-FODMAP diet caused a significant improvement in many gastrointestinal symptoms, such as abdominal pain, bloating, diarrhea, constipation, and dissatisfaction of the intestinal habits in comparison with control diet. According to the results of various studies, it seems that a low-FODMAP diet can improve digestive symptoms and IBS-related complaints.
