Leila Aghababaei; Maryam Hasani; Payman Mahasti; Hassan Hamedi
Abstract
An edible coating of chitosan (CH) containing cumin essential oil (CEO) was used in this study to increase the shelf life of chicken fillets during refrigerated storage (4±1 ˚C). CEO was extracted by Clevenger apparatus, and the chemical compounds of CEO were determined. Four ...
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An edible coating of chitosan (CH) containing cumin essential oil (CEO) was used in this study to increase the shelf life of chicken fillets during refrigerated storage (4±1 ˚C). CEO was extracted by Clevenger apparatus, and the chemical compounds of CEO were determined. Four treatments were produced to investigate the shelf life of chicken fillets: T1: Control (C), T2: CH, T3: CH-CEO (0.75%), and T4: CH-CEO (1.5%). The chemical parameters (peroxide value, thiobarbituric acid, and total volatile basic nitrogen), microbial parameters (total bacterial counts, psychrotrophic bacteria, lactic acid bacteria), and sensory attributes (taste, odor, color, texture, and general acceptance) of the chicken fillets were periodically evaluated. Cumin aldehyde (25.79%), gamma-terpinene (21.95%), propanol (18.17%), p-menta-1,4-dien 7-al (11.73%), and beta-pinene (9.27%) were the chemical compounds of CEO. It was shown by the results that the microbial load and chemical oxidation of chicken fillets were inhibited by the active edible coating (p<0.05) and that better preservation effects have resulted from higher essential oil concentration (p<0.05). T4 achieved the best chemical, microbial and sensory results in most tests at the end of the storage period. The shelf life of chicken fillets during storage in the refrigerator was increased by the CH edible coating containing CEO, as demonstrated by this study.
Reihaneh Jahangiri; Hassan Hamedi; Hamed Ahari
Abstract
The use of new preservation methods based on natural substances of plant and animal origin in food is expanding. Edible coatings can improve the quality of fresh and frozen products such as fish by preventing microbial growth, and decreasing lipid oxidation and moisture loss. The aim ...
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The use of new preservation methods based on natural substances of plant and animal origin in food is expanding. Edible coatings can improve the quality of fresh and frozen products such as fish by preventing microbial growth, and decreasing lipid oxidation and moisture loss. The aim of this study was to evaluate the effect of the edible coating of chitosan (0 and 2%), Baneh gum (0, 1 and 2 %), propolis extract (0, 1 and 2%), and nanoemulsion of ginger essential oil (0, 0.5 and 1 %) on the shelf life of fresh salmon fillets during 12 days refrigeration. The results showed that the coating had a significant effect on reducing the total count, psychrophilic bacteria, coliforms, and Pseudomonas count during storage. Also, coated samples showed lower pH and peroxide values than uncoated, but the coating had little effect on reducing thiobarbituric acid (TBARS) and total volatile nitrogen (TVBN) values. During the sensory evaluation, it was found that the chitosan coating with Baneh gum can maintain or improve the sensory properties and extend the shelf life of refrigerated fish.
Mohaddeseh Asafari; Peyman Mahasti Shotorbani; Hassan Hamedi
Volume 4, Issue 2 , April 2021, , Pages 8-16
Abstract
Signs and marks in packaging have an important role in marketing and identification of the products. The purpose of this study was to determine the accuracy of the inclusion of this information and its compliance with the criteria established by the Food and Drug Administration to identify errors and ...
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Signs and marks in packaging have an important role in marketing and identification of the products. The purpose of this study was to determine the accuracy of the inclusion of this information and its compliance with the criteria established by the Food and Drug Administration to identify errors and frauds. In this descriptive-analytical study, 272 samples of dairy products were selected, and their labels were photographed, then the information investigated with documents in Food and Drug Administration and the general guidelines of food and beverages. Finally, data were analyzed with SPSS software and chi-square tests. Based on the results of this study, it was found that in general, 4%, 7%, 1.1%, 11%, 8.4%, 25% and 18% of the products presented in Tehran were respectively. The defects did not have the weight net, license number, production date and expiration of the product and the ingredients (same percentage), batch number, storage conditions, instructions for preparation, and the requirements and health recommendations. In nutritional claims, most claims were related to fat, salt and fiber and 7.7% of the products contained claims for health. 45.2% of the samples have descriptive statements, that 18.15% were unauthorized. 14% of the samples lack traffic lights nutrition and 39% did not have a nutrition facts table. Also, 9.9% of the samples were illegible and were not read clearly. Food labels are a tool for measuring the health of products and will have a significant role in reducing NCD. This study reveals the more rigorous monitoring of food labels.
Mohsen Mokhtarian; Hamid Tavakolipour; Hassan Hamedi; Amir Daraei Garmakhany
Volume 3, Issue 4 , December 2020, , Pages 7-13
Abstract
The physical properties of almond kernel are necessary for the proper design of equipment for transporting, drying, processing, sorting, grading, and storage this crop. In this study, different models of ANNs with different activation functions were used to forecast surface area, volume, mass, and kernel ...
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The physical properties of almond kernel are necessary for the proper design of equipment for transporting, drying, processing, sorting, grading, and storage this crop. In this study, different models of ANNs with different activation functions were used to forecast surface area, volume, mass, and kernel density of almond. The results showed that multilayer perceptron network with tanh-tanh activation function as a goodness activation function can be estimated surface area, volume, mass, and kernel density with R2 value 0.983, 0.986, 0.981, and 0.982, respectively. Furthermore, the physical properties were fitted by regression relationships, the result showed linear regression method can be predicted surface area, volume, mass and kernel density with R2 value 0.979, 0.961, 0.945, and 0.791, respectively. Generally, the result showed neural network model had high ability to forecast the physical properties of almond than the linear regression method.
Mohsen Mokhtarian; Ahmad Kalbasi-Ashtari; Hassan Hamedi
Volume 3, Issue 3 , September 2020, , Pages 26-32
Abstract
Mentha piperita L., known as mint or peppermint used extensively in the food, pharmaceutical, and cosmetics industries. Although different techniques have been studied for drying mint leaves, there is not enough information on solar drying of peppermint (especially the Persian variety) in the literature. ...
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Mentha piperita L., known as mint or peppermint used extensively in the food, pharmaceutical, and cosmetics industries. Although different techniques have been studied for drying mint leaves, there is not enough information on solar drying of peppermint (especially the Persian variety) in the literature. In this study, thin layers of peppermint leaves were dehydrated evenly with three methods of shade (MI), sun (MII), and solar heat collector (MIII). The air temperature rise and drying time in I, II, and III were (1, 5, and 18ºC) and (880, 300, and 150 min), respectively. The particle size, porosity, and rehydration rate of peppermint dried in III were significantly higher than those dried with I and II. While the overall color (∆E) of peppermint dried in I and III did not change, the greenish index and chlorophyll of peppermint dried in II were ~21% and ~15% less than those in III because it was exposed to direct sunlight radiation. The peppermint dried with III had lower bulk density, higher sensory attributes (minty aroma, flavor, cooling mouthfeel, and visual color), and overall acceptance scores than II and I. The solar dryer produced high quality dehydrated peppermint with renewable energy and without environmental contamination.
Golnaz Majdizadeh; Zahra Vafaei Mastanabady; Zahra Zare; Mena Farazi; Zahra Mohammadizadeh; Ariyo Movahedi; Mina Minaie; Zahra Abdollahi; Ahmadreza Dorosty Motlagh; Maryam Zarei; Arezoo Kavei; Hassan Hamedi
Volume 2, Issue 2 , November 2019, , Pages 19-25
Abstract
Food insecurity is one of the issues that have a serious impact on the nutritional status of all individuals in society, especially children and given that food insecurity can be a precursor of health, developmental and nutritional problems, determining the factors associated with it, is also essential ...
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Food insecurity is one of the issues that have a serious impact on the nutritional status of all individuals in society, especially children and given that food insecurity can be a precursor of health, developmental and nutritional problems, determining the factors associated with it, is also essential in any community it seems. According to this, this study aimed to determine the relationship between food security, socioeconomic status and anthropometric indices in children 2-5 years in Hamedan city. In this analytical descriptive cross-sectional study, 683 children 2-5 years (360 boys, 323 girls) from Hamedan city and villages were selected by systematic cluster sampling methods from the Hamedan University of Medical sciences. HFLAS 9-item questionnaire to investigate food security, and also, a general questionnaire was completed through interviews with mothers of children. Also, children of anthropometric Z scores were measured by using the world health organization (WHO) Anthro software basal on WHO 2007 standards. Eventually, data were analyzed by SPSS software. According to this study, there was a significant correlation between the mother's and father's education and occupation, frequency of snack and food security with children's weight for age (p <0.05). Also, there was a significant correlation between the mother's and father's job, frequency of snack with children's weight for height (p <0.05). While BMI for age had a significant correlation with maternal education, (p <0.05). Also, height for age correlated with the mother’s education and occupation, father’s education, number of snacks and food security (p <0.05). Also, no significant difference was found between other components (p>0.05). The result of this study shown that there was a significant correlation between food security, Z score height for age, Z scores BMI for age, mother's and father's education, mother's job and socioeconomic status of the household.
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.
Ali Sadeghi; Hassan Hamedi; Peyman Mahasti Shotorbani; Maryam Fahimdanesh
Volume 1, Issue 3 , September 2018, , Pages 12-16
Abstract
Biodegradable polymeric nanoparticles have been extensively used as colloidal materials for nanoparticles production designed for various purposes, including drug targeting, enhancement of drug bioavailability and protection of drug bioactivity and stability. In particular, poly (lactide‐co‐glycolide) ...
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Biodegradable polymeric nanoparticles have been extensively used as colloidal materials for nanoparticles production designed for various purposes, including drug targeting, enhancement of drug bioavailability and protection of drug bioactivity and stability. In particular, poly (lactide‐co‐glycolide) (PLGA) as a polyester has been FDA approved for human use. In this research, the biodegradable polymeric nanoparticle of casein/poly lactic-co-glycolic acid (PLGA) containing three concentrations of alpha-tocopherol was prepared. The comparative evaluation of these nanoparticles, including morphology, size, zeta potential, entrapment rate, spectroscopy, thermal resistance, and their release profile was carried out. The comparative results suggested that the sizes of derived nanoparticles were between 150 and 350 nanometers. In addition, there was a significant difference between the nanoparticles size and increase in alpha-tocopherol percentage used in this formulation (p<0.05). The accumulated results indicated that the highest entrapment rate belonged to 10 percent of alpha-tocopherol, and higher concentrations decrease the entrapment rate. The using of casein/PLGA can be optimized the characteristics and morphological properties of nanoparticles. The polymeric nanoparticles containing alpha-tocopherol can be used as a biologic preservative to improve drug delivery and consumer health.
Mina Kargozari; Hassan Hamedi; Seyyed Amir Amirnia; Ahmad Montazeri; Sara Abbaszadeh
Volume 1, Issue 3 , September 2018, , Pages 30-38
Abstract
Active packaging usually means the incorporation of specific compounds with active function beyond the packaging materials to extend the shelf life of the foodstuffs. The aim of this study was the evaluation of active edible coating of sodium alginate (Alg) incorporated with coriander seed essential ...
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Active packaging usually means the incorporation of specific compounds with active function beyond the packaging materials to extend the shelf life of the foodstuffs. The aim of this study was the evaluation of active edible coating of sodium alginate (Alg) incorporated with coriander seed essential oil (CEO) on the shelf life of chicken fillets during cold storage. Overall, MIC and MBC values ranging from 0.5 to 5 (mg/mL) proved that Gram-positive bacteria were more susceptible to CEO than Gram-negative bacteria. Results showed that coatings of Alg had no significant effect on decreasing the microbial load of aerobic mesophilic, psychrotrophic bacteria, lactic acid, coliform bacteria as well as Staphylococcus aureus (p>0.05), while the coating of fillet with Alg/CEO showed a significant difference with the other treatments during 12 days of storage (p<0.05). The results also showed that TVBN, TBARS and peroxide formation in the samples treated by Alg/CEO was significantly lower than control group (p<0.05). Concerning organoleptic properties, the coating of Alg with 0.5% CEO scored higher in the sensory evaluation.
Peyman Mahasti Shotorbani; Hassan Hamedi; Melika Zandi; Maryam Fahimdanesh
Volume 1, Issue 1 , March 2018, , Pages 12-18
Abstract
Edible oils can be misdescribed by substituting one ingredient for a similar, but less expensive or over-declaring a quantitative ingredient. Thus, the identification of raw materials in edible oils is important for authentication. In This study, three methods (saponification value, sterol and fatty ...
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Edible oils can be misdescribed by substituting one ingredient for a similar, but less expensive or over-declaring a quantitative ingredient. Thus, the identification of raw materials in edible oils is important for authentication. In This study, three methods (saponification value, sterol and fatty acids analysis) were used to compare for fraud detection in edible oils. Tests used to assess the quality of sesame oil and oils obtained from mixing sesame oil with sunflower and corn oils. The results showed that campesterol, Δ7-avenasterol, Δ5-avenasterol and Δ7-stigmastenol values can be used as detectors for corn oil mixed with sesame oil, even at a concentration of 5%. Also, in the detection of sesame oil fraud, measuring the fatty acids include oleic, linolenic, linoleic and behenic is more suitable even at a concentration of 5% of sunflower oil adding. In general, the best method for detecting of fraud at all concentrations of added sunflower oil was the saponification value method, while fatty acid composition and desmethylsterols composition was suitable for both corn and sunflower oils mixing.
