Effect of Different Drying Methods on the Physicochemical Properties and Bioactive Components of Saffron Powder     

Aghaei  Zahra  Jafari  Seid Mahdi  Dehnad  Danial 《Plant foods for human nutrition (Dordrecht, Netherlands)》2019,74(2):171-178

Plant Foods for Human Nutrition - Saffron is the most expensive spice in the world; so, determining optimum conditions for its processing is crucial. The most important processing stage of saffron...  相似文献   

Naringin-loaded Poly(ε-caprolactone)/Gelatin Electrospun Mat as a Potential Wound Dressing: In vitro and In vivo Evaluation     

Majid Salehi  Ahmad Vaez  Mahdi Naseri-Nosar  Saeed Farzamfar  Arman Ai  Jafar Ai  Shima Tavakol  Mehrdad Khakbiz  Somayeh Ebrahimi-Barough 《Fibers and Polymers》2018,19(1):125-134

In the present study, naringin, a flavonoid isolated from the grape and citrus fruit species, was incorporated with poly(ε-caprolactone)/gelatin composite mats in order to develop a potential wound dressing. The composite mats were prepared by electrospinning of poly(ε-caprolactone)/gelatin (1:1 (w/w)) solution incorporated with 1.50 %, 3 % and 6 % (w/w) of naringin. The electrospun mats were evaluated regarding their morphology, contact angle, water-uptake capacity, water vapor transmission rate, tensile properties, drug release, cellular response and in vivo wound healing activity. The study showed that after 2 weeks, the full-thickness excisional wounds of Wistar rats treated with the naringin-loaded dressings achieved a wound closure of higher than 94 % and the dressing containing 6 % (w/w) naringin had almost 100 % wound closure. The sterile gauze, as the control group, showed nearly 86 % of wound closure after this period of time. Our results provided evidence that supports the possible applicability of naringin-loaded wound dressing for successful wound treatment.  相似文献   

Attribute selection and model evaluation for the maternal and paternal imprinted genes in bovine (Bos Taurus) using supervised machine learning algorithms     

Keyvan Karami  Saeed Zerehdaran  Ali Javadmanesh  Mohammad Mahdi Shariati  Hossien Fallahi 《Zeitschrift für Tierzüchtung und Züchtungsbiologie》2019,136(3):205-216

Imprinted genes display biased expression of paternal and maternal alleles in mammals. They are marked through epigenetic process during gametogenesis. Characterization of imprinted genes has expanded our understanding of the regulation and function of genes. In the current study, 22 experimentally validated imprinted genes in bovine (Bos Taurus) were analysed. Several supervised machine learning algorithms and attribute weighting methods were used to find characteristics of different types of imprinted genes and suggest a classification method for finding maternally and paternally expressed genes in bovine. For assessing the best model and comparing attributes in other organisms, we have also conducted a comparative analysis for human and sheep imprinted genes. According to the results of the present study, GC contents 10 and 100 kb upstream, Gly and Gln amino acids, Ile/ATC codon usage, LINE and SINE in 100kbup and length of first intron were significantly different between the maternal and paternal genes in cattle. Considering all species together, we found that GC content 100 kb up, LINE 100 kb up and the frequency of amino acids like Gly, Gln and Met were the most important attributes for identifying the paternal and maternal imprinted genes. These findings could imply conservation pattern in the attributes among these species.  相似文献   

Assessment of the Antibacterial Effect of Chitosan Coated with Heracleum persicum Oil on Rainbow Trout Quality     

Issa Mohammadpourfard  Mir Mohammad Shamloo Anbardan  Navid Eshghi  Mahdi Jahanbakhsh  Arash Akbarzadeh  Saeed Ghorbani Bejandi 《Journal Of Aquatic Food Product Technology》2017,26(6):756-768

Today, due to the rapid spoilage of fish, the use of natural preservatives is a priority over those of synthetic varieties. Also, the natural antimicrobial effects of essential oils can help to increase shelf life. There are very few studies concerning the use of essential oils in this regard. In the present study, the antibacterial effect of chitosan coated with Heracleum persicum oil was investigated on the quality of rainbow trout. The control and the coated fish samples were analyzed periodically by generalized estimating equation (GEE) for total viable count (TVC), psychrophilic bacteria, total volatile base nitrogen (TVB-N), polyunsaturated fatty acids (PUFA), texture, taste, odor, and overall acceptance parameters. The results showed that by increasing the amount of chitosan, TVC, psychrophilic bacteria, and TVB-N decreased while PUFA, texture, taste, odor, and overall acceptance parameters increased.  相似文献   

Effects of chronic high stocking density on liver proteome of rainbow trout (<Emphasis Type="Italic">Oncorhynchus mykiss</Emphasis>)     

Mahdi Naderi  Saeed Keyvanshokooh  Amir Parviz Salati  Alireza Ghaedi 《Fish physiology and biochemistry》2017,43(5):1373-1385

The main aim of the present study was to assess the effects of chronic high stocking density on liver proteome of rainbow trout. Rainbow trout juveniles (42.6 ± 2.3 g average body weight) were randomly distributed into six tanks at two stocking densities (low stocking density (LD) = 20 kg m^?3 and high stocking density (HD) = 80 kg m^?3). Both treatments were performed in triplicate tanks for a period of 60 days. High stocking density caused a reduction in the growth performance compared with LD fish. Lysozyme activity increased with stocking density, while serum complement activity presented the opposite pattern. Serum cortisol and total protein levels did not show significant differences (P > 0.05) between experimental groups. The fish reared at high stocking density showed significantly lower osmolality and globulin values but higher albumin level. The HD group had significantly higher activities of catalase, glutathione peroxidase and superoxide dismutase, and malondialdehyde content in the liver when compared to the LD group. Comparative proteomics was used to determine the proteomic responses in livers of rainbow trout reared at high stocking density for 60 days. Out of nine protein spots showing altered abundance (>1.5-folds, P < 0.05), eight spots were successfully identified. Two proteins including apolipoprotein A-I-2 precursor and mitochondrial stress-70 protein were found to increase in HD group. The spots found to decrease in the HD group were identified as follows: 2-peptidylprolyl isomerase A, two isoforms of glyceraldehydes-3-phosphate dehydrogenase, an unnamed protein product similar to fructose-bisphosphate aldolase, 78 kDa glucose-regulated protein, and serum albumin 1 protein.  相似文献   

Iron Fortification of Whole Potato Using Vacuum Impregnation Technique with a Pulsed Electric Field Pretreatment     

Mana Mashkour  Yahya Maghsoudlou  Mahdi Kashaninejad  Mehran Aalami 《Potato Research》2018,61(4):375-389

In this study, the effect of a vacuum impregnation (VI) process with pulsed electric field (PEF) pretreatment on fortification of whole potato with ferric pyrophosphate was investigated. The VI process and PEF pretreatment were optimized with respect to physicochemical attributes of PEF-VI-processed samples using response surface methodology (RSM). The results indicated that the iron content of VI-processed and PEF-VI-processed potatoes was increased about 126 and 457%, respectively, compared to unprocessed potatoes. A more intensive PEF pretreatment led to a higher cell disintegration, decrease in colour and textural parameters and also increase in components leakage from treated potato. Our study suggests that whole 180-g potatoes should be pretreated at 394 V/cm with 36 pulses and then treated at 3.5 kPa for 37 min in vacuum stage and 39 min restoration time in atmospheric stage to achieve the highest iron fortification and the lowest physicochemical changes during PEF-VI processing.  相似文献   

Effect of Modified Oat Starch and Protein on Batter Properties and Quality of Cake     

Leila Mirmoghtadaie  Mahdi Kadivar  Mohammad Shahedi 《Cereal Chemistry》2009,86(6):685-691

Starch and protein separated from oat were chemically modified using cross‐linking and acetylation protocols for starch, and deamidation and succinylation for protein isolate. Cross‐linking decreased swelling power of starch, whereas syneresis increased, but cross‐linking does not have a significant effect on gelatinization temperature. Acetylation increased swelling power, but gelatinization temperature and syneresis diminished. Deamidation and succinylation increased nitrogen solubility index, emulsion activity, foaming capacity, and water and oil binding capacity. Emulsion stability did not change with deamidation and it diminished with succinylation, while foaming stability decreased with both treatments. Acetylated starch and two types of modified proteins were substituted for 5, 10, 15, and 20% of oat flour to bake cake samples and then physical properties of the cakes were measured. Acetylated starch increased batter viscosity, cake volume, and whiteness of cake crust. Increased level of deamidated protein produced cakes with lower batter viscosity, higher volume, and darker color (increase in redness). Application of higher levels of succinylated protein led to higher batter viscosity and lightness, and lower cake volume. Therefore, substitution of deamidated protein and acetylated starch can improve cake properties.  相似文献   

Thermo-regulating nanofibers based on nylon 6,6/polyethylene glycol blend     

Mohammad Seifpoor  Mahdi Nouri  Javad Mokhtari 《Fibers and Polymers》2011,12(6):706-714

Renewable energies as well as saving energy in suitable forms are of great challenges in the field of energy storage. Phase change materials (PCM) are one of the latent heat storage materials. They can produce high density of energy storage during phase change. However, there is a risk of material leakage during their phase change. Electrospinning could lead to thermo-regulating nanofibers of leakage free form-stable PCMs. For this purpose, polyethylene glycol (PEG) 6000 as a PCM together with nylon 6,6 as supporting material was electrospun in different blend ratios. Morphology and diameter of the produced nanofibers were studied by Scanning Electron Microscope (SEM). The average nanofibers diameter was in the range of 178 to 507 nm for different blend ratios. Differential scanning calorimetry (DSC) results showed that the composite samples have high heat capacity and good energy saving properties. As-spun nanofibers were successfully changed to a formstable thermo-regulating nanocomposite using a suitable cross-linking agent.  相似文献   

Oxidative Stability of Spray-Dried Microencapsulated Fish Oils with Different Wall Materials     

Parastoo Pourashouri  Bahareh Shabanpour  Seyed Hadi Razavi  Seid Mahdi Jafari  Ali Shabani  Santiago P. Aubourg 《Journal Of Aquatic Food Product Technology》2013,22(6):567-578

Multilayer microencapsulation of fish oil was evaluated by using fish gelatin (treated with or without microbial transglutaminase [MTGase]), chitosan, and maltodextrin for its ability to control lipid oxidation. This study showed that a mixture containing gelatin and maltodextrin obtained the highest percentage of core release. The oxidative stability of the formulated mixtures and the bulk oils was investigated during a period of 60 days. The peroxide value (PV) was assessed as a parameter for primary oxidation products, and p-anisidine (p-AV) and thiobarbituric acid reactive sub-stances (TBARS) was used to analyze secondary oxidation compounds. Observation of oxidation products showed that combinations of gelatin and maltodextrin made by adding MTGase and a mixture of gelatin and chitosan were able to increase the oxidative stability, and increases in PV and p-AV and TBARS were found for all oils.  相似文献   

Preliminary characterization of Lactococcus garvieae bacteriophage isolated from wastewater as a potential agent for biological control of lactococcosis in aquaculture     

Seyed Mahdi Ghasemi  Majid Bouzari  Giti Emtiazi 《Aquaculture International》2014,22(4):1469-1480

Lactococcosis, a significant emerging disease of fish caused by Lactococcus garvieae, has become one of the devastating problems due to its serious economic damage in aquaculture. The aim of this study was to isolate and characterize a lytic phage infecting L. garvieae as a potential bioagent for the treatment of lactococcosis. In this regard, one strain of L. garvieae was isolated from diseased rainbow trout, and then, following biochemical and molecular identifications, its specific phage, WWP-1, which was able to destroy L. garvieae cells through the lytic cycle, was isolated from a municipal wastewater sample. Transmission electron microscope revealed that the isolated phage possesses an icosahedral head and a non-contractile short tail, resembled to members of the family Podoviridae. Moreover, phage WWP-1 represented optimal antibacterial activity at temperatures ranging from 15 to 30 °C, suggesting that it could be very effective at rainbow trout rearing temperature. Restriction profile analysis revealed that NdeI can digest WWP-1 genome while EcoRI, EcoRV, and BamHI were incapable of cutting its DNA. According to the in vivo experiment result, WWP-1 could decrease mortality rate of infected rainbow trout in aquaculture. The results suggest that this naturally occurring bacteriophage could be considered as a promising agent to control the disease caused by L. garvieae strains in rainbow trout rearing.  相似文献