
Sameh A. Korma- Doctor of Engineering
- Assistant Professor (Lecturer) at Zagazig University
Sameh A. Korma
- Doctor of Engineering
- Assistant Professor (Lecturer) at Zagazig University
Looking for potential collaborators in terms of dairy processing and lipids study.
About
114
Publications
75,763
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Introduction
My interests are in Dairy Science & food science and technology, including human milk, infant formula, structured lipids, soymilk, milk products, microbiology, functional foods, emulsions, oils, lipids, food hydrocolloids, food rheology, nutrition, and flavor chemistry.
Current institution
Additional affiliations
December 2013 - present
Education
September 2019 - December 2023
September 2015 - June 2018
September 2009 - November 2013
Publications
Publications (114)
Inflammatory bowel disease is a collection of intestinal disorders that cause inflammation in the digestive tract. Prolonged inflammation in the gastrointestinal tract is a major risk factor for colorectal cancer. The objective of this study was to fucus on gene expression levels of (KRT-14; associated with epithelial cell integrity) and enhancer o...
This study examined the effect of triple-frequency ultrasound treatment (TFUT)-assisted lactic acid bacteria (LAB-L. plantarum and L. helveticus fermentation for 24-h and 48-h) on the chemical, structural, morphological, metabolic, and sensory properties of rice lees (RL). Ultrasonicated-assisted RL fermented with L. helveticus (URLH-48) had the gr...
Over the last decade, biomedical nanomaterials have garnered significant attention due to their remarkable biological properties and diverse applications in biomedicine. Metal oxide nanoparticles (NPs) are particularly notable for their wide range of medicinal uses, including antibacterial, anticancer, biosensing, cell imaging, and drug/gene delive...
The purpose of this study is to characterize and compare the distribution of nutritionals, as well as bioactive compounds, and the antioxidant activities in the mango (Mangifera indica L.) fruit different fractions. Additionally, specific formulations of biscuits made by incorporating powders from three fractions were investigated.
Separation of th...
Essential oils (EOs) have been proved as natural food preservatives because of their effective and wide-spectrum antimicrobial activity. They have been extensively explored for potential applications in food industry, and substantial progresses have been achieved. However well EOs perform in antibacterial tests in vitro, it has generally been found...
This study aimed to investigate the physiochemical properties, techno-functional attributes, and proteolytic impacts of incorporating different hydrocolloids as fat substitutes in low-fat cheddar cheese. The effects of hydrocolloids (gums) and dietary fiber, both individually and in combination, were studied for the production of low-fat cheddar ch...
Preservation of perishable fruits and vegetables through edible coatings having functional roles, has gained importance now a days. The present study was designed to investigate the effect of water chestnut powder-based edible coatings on the quality and shelf life of apples (Kala kullu). Two treatments, T1 and T2, were developed by utilizing two d...
Polyphenols, including phenolics, alkaloids, and terpenes, are secondary metabolites that are commonly found in fruits, vegetables, and beverages, such as tea, coffee, wine, chocolate, and beer. These compounds have gained considerable attention and market demand because of their potential health benefits. However, their application is limited due...
Garlic (Allium sativum L.) is a widely abundant spice, known for its aroma and pungent flavor. It contains several bioactive compounds and offers a wide range of health benefits to humans, including those pertaining to nutrition, physiology, and medicine. Therefore, garlic is considered as one of the most effective disease-preventive diets. Many in...
Foods that are widely consumed and accepted have had a lot of ingredients added to them which may enhance consumer’s health. Whey is a byproduct in the manufacture of cheese or curd and is widely used in different beverage formulations, due to its nutritional importance. In this context, a mango-based functional whey drink, added with omega-3-rich...
This present study reports the effect of different storage temperatures on the film‐dried chicken breast (FDCB) by film‐drying technique for 15 days, including FDCB‐(−18), FDCB‐4, FDCB‐18, FDCB‐28 and FDCB‐38 (°C). Both storage time and temperature negatively affected the water‐holding capacity and moisture ratio, except for FDCB‐(−18). To ensure t...
The sugarcane ( Saccharum officinarum L.) juice, a beverage with fascinating track record of health promoting potential, loaded with phenolics, flavonoids, the bioactives, is capable of high antioxidant activities. The mint is a reliable herbal plant, with loads of phytochemicals and hundreds of food applications. However, sugarcane juice added wit...
Momordica charantia L. has been remained a well-known medicinal vegetable used traditionally. However, which part is most effective against which disorder, has been remained undiscovered yet. The objective of this study was to examine the antimicrobial, antihyperlipidemic and antihyperglycemic activities of peel, flesh, and seeds of bitter gourd, t...
To meet the increasing consumer demands for fruits, the implementation of artificial ripening techniques using synthetic chemicals has become increasingly commonplace among less ethical fruit production companies in today’s global market. The objective of present work was to establish a difference in the physiological and biochemical and profiles o...
There is an intense need to reduce the post-harvest food loss to improve global food security, public health and sustainable natural resource use. Fruits are categorized as one of the most perishable food products and need proper packaging, storage, and transportation systems for their preservation. This research design was aimed at evaluating the...
The objective of this study was to evaluate the nutritional value of dried Kishk-like products using burghal of wheat, oat, and fenugreek with cow’s milk, camel’s milk, and goat’s milk. Kishk is an artisanal product that is popular in Egypt and the Middle East. This product is made primarily with wheat; however, to our knowledge, no research has us...
Whey beverages that have been added with fruits pulp have always been remained the priority demand of food consumers, but loss of nutritional contents and microbial safety of such beverages is always matter of concern of food producers. To overcome these issues food experts are always in try to find out the processing and preservation techniques fo...
Background
Ripening of climacteric vegetable, tomato, is a complicated process that results in numerous physiological and biochemical changes, and role of ethylene in this phenomenon is very crucial. Use of different ethylene scavengers can control the post-harvest ripening and quality of tomatoes. In current study, combinations of chemicals as 2%...
IntroductionFlours from cereal grains have the potential to be used in the production of bakery products, especially breads, and the addition of other non–wheat plant materials in the form of flours, extracts and malts has always been the area of interest for food producers.Methods
In this research work, barley grains were converted into barley mal...
Cheddar-type cheese produced from buttermilk had softer texture than standard cheddar cheese due to lower fat content of buttermilk. Fat is extremely important for the functional characteristics and optimum textural attributes of cheese. The effect of different fat contents of buttermilk on chemical characteristics of cheddar-type cheese is not pre...
Padina pavonica, Hormophysa cuneiformis, and Corallina officinalis are three types of algae that are assumed to be used as antibacterial agents. Our study’s goal was to look into algal extracts’ potential to be used as food preservative agents and to evaluate their ability to inhibit pathogenic bacteria in several meat products (pastirma, beef burg...
Probiotics, like lactic acid bacteria, are non-pathogenic microbes that exert health benefits to the host when administered in adequate quantity. Currently, research is being conducted on the molecular events and applications of probiotics. The suggested mechanisms by which probiotics exert their action include; competitive exclusion of pathogens f...
Microencapsulation of B. bifidum F-35 was carried out through emulsification technique in order to increase the microbial load while maintaining the rheological functions of set-yogurt. To produce single-layer (SL) microcapsules of whey protein, the pH was adjusted to 6.4 within Transglutaminase-induced gelation. Sodium alginate was processed as th...
Camel ghee, a camel milk product, plays a pivotal role in the diets of rural populations in Middle Eastern, Asian, and African societies, characterized by high temperatures, scarce agricultural areas, and low rainfall. Indeed, camel milk offers a broad spectrum of therapeutic and nutritional features that benefit human health. As a result, camel gh...
Introduction
Dietary medicinal plants are among the most sought-after topics in alternative medicine today due to their preventive and healing properties against many diseases.
Aim
This study aimed to extract and determine the polyphenols from indigenous plants extracts, i.e., Mentha longifolia, M. arvensis, Tinospora cordifolia, Cymbopogon citrat...
Commercial milk is one of the most well-known substitutes for human milk. In view of this, we performed an in-depth examination of human milk compared with camel milk. Results showed that human milk and camel milk have the same levels of saturated fatty acids. Human milk contained a higher proportion of polyunsaturated fatty acids, while camel milk...
Melons (Cucumis melo L.) are highly popular due to its delicate and delightful flavor in the worldwide. However, the flavor of the melon juice was easily affected by thermal treatments and unpleasant cooking smell during production process. Sugarcane (Saccharum officinarum) juice is a proven nutritious beverage with high levels of antioxidants, pol...
Avian campylobacteriosis is a vandal infection that poses human health hazards. Campylobacter is usually colonized in the avian gut revealing mild signs in the infected birds, but retail chicken carcasses have high contamination levels of Campylobacter spp. Consequently, the contaminated avian products constitute the main source of human infection...
The objective of the study is to evaluate the chemical characterisation, and biological and in silico potential of Haloxylon stocksii (Boiss.) Benth, an important halophyte commonly used in traditional medicine. The research focuses on the roots and aerial parts of the plant and extracts them using two solvents: methanol and dichloromethane. Chemic...
In this work, an egg yolk protein hydrolysate (EYPH) with a high iron-chelating ability (87.32%) was prepared. The fractionation using 60% (v/v) ethanol concentration (E3 fraction) led to the efficiently accumulating the iron-chelating peptides in EYPH. The characterization results showed that iron mainly chelated with carboxyl, amino and phosphate...
Several studies have been found in the literature about the phytochemistry, nutritional profiles, and pharmacological potential of pumpkin and pumpkin-based food products but a very few data have been found about the impact of the addition of pumpkin powders on physical and rheological behaviors of bakery products. The present research work was con...
Glutathione is a naturally occurring compound that plays a crucial role in the cellular response to oxidative stress through its ability to quench free radicals, thus mitigating the risk of potential damage, including cell death. While glutathione is endogenously present in different plants and animal cells, their concentration varies considerably....
Introduction
Obesity, a complex, multifactorial disease, is considered a global disease burden widely affecting the quality of life across different populations. Factors involved in obesity involve genetics, behavior and socioeconomic and environmental origins, each contributing to the risk of debilitating morbidity and mortality. However, the tren...
In recent years, consumers have been concentrating on the health benefits and nutrition from food to preserve a healthy lifestyle. They are looking for colorants derived from natural sources to enhance the nutritional and antioxidant value of foods. Coloured cereals (wheat, rice, barley, oat, maize, sorghum, and millets) contain many phytochemicals...
The intestinal tract microbiota influences many aspects of the dietary components on colon health and during enteric infections, thus, playing a pivotal role in the colon health. Therefore, the eugenol (EU) nano-emulsion effective concentration reported in our previous study against cancer cells should be explored for safety against beneficial micr...
Recently, consumers are increasingly concerned about the contamination of food by molds and the addition of chemical preservatives. As natural and beneficial bacteria, probiotics are a prospective alternative in food conservation because of their antimycotic activities, although the mechanism has not been explained fully at the level of metabolites...
The existence of aflatoxin M1 (AFM1) in raw milk results in economic losses and public health risks. This research aims to examine the capability of bentonite to adsorb and/or eliminate AFM1 from various raw milk types. In addition, the effects of numerous bentonites (HAFR 1, 2, 3 and 4) on the nutritional characteristics of the milk were studied....
Lignans are known dietary polyphenols found in cereals, plants and seeds. Flaxseed is one of the major sources of lignans mainly existing in the form of secoisolariciresinol diglucoside (SDG) which can be metabolised by the gut microbes into secoisolariciresinol (SECO) and mammalian lignan (enterodiol and enterolactone) that are easily absorbed thr...
Meat processing represents an inevitable part of meat and meat products preparation for human consumption. Both thermal and non-thermal processing techniques, both commercial and domestic, are able to induce chemical and muscle’s proteins modification which can have implication on oxidative and sensory meat characteristics. Consumers’ necessity for...
The yellow polyphenolic pigment known as curcumin, originating from the rhizome of the turmeric plant Curcuma longa L., has been utilized for ages in ancient medicine, as well as in cooking and food coloring. Recently, the biological activities of turmeric and curcumin have been thoroughly investigated. The studies mainly focused on their antioxida...
The present study investigates the hydrolysis, microstructural profiling and utilization of guar gum (Cyamopsis tetragonoloba) as a prebiotic in a yoghurt. Guar galactomannans (GG) was purified and partially depolymerized using an acid, alkali and enzyme to improve its characteristics and increase its utilization. The prebiotic potential of hydroly...
The effect of high-intensity thermosonication (HIT) pretreatment (20 kHz frequency, output power 4000 W and 25% amplitude for 5, 10 and 15 min) on the physicochemical and rheological properties of stirred yoghurt made from goat milk was studied. Various parameters of the milk were evaluated, such as the particle size, pH and soluble calcium and pho...
Zaleya pentandra L. jaffery is the only species of the genus Zaleya that grows in the Cholistan desert, Pakistan. It is a Xero-halophyte plant with high phenolic and flavonoid content. The present research was designed to investigate the phytochemical composition, biological activities, and in silico molecular docking of the ethanolic extract of Z....
The extensive use of antibiotics and vaccines against microbial infections can result in long-term negative effects on humans and the environment. However, there are a number of plants that have antimicrobial effects against various disease-causing microbes such as bacteria, viruses, and fungi without negative side effects or harm to the environmen...
Flaxseed (Linum usitatissimum L.) has gained worldwide recognition as a health food because of its abundance in diverse nutrients and bioactive compounds such as oil, fatty acids, proteins, peptides, fiber, lignans, carbohydrates, mucilage, and micronutrients. These constituents attribute a multitude of beneficial properties to flaxseed that makes...
The main objective of this work was to gain insight into biological propensities, and bioactive phytochemicals of Acacia jacquemontii Benth, a wild plant providing medicinal components, as well as to establish a link between its phytochemical profile and biological activities. Phytochemical profiling revealed the presence of a higher amount of tota...
In this work, the effects of using natural lignocellulosic-based adsorbents from sugarcane bagasse (SC), cornstalk piths (CP), and corn cob (CC) on the physicochemical properties and quality of fried oils were studied. The properties of lignocellulosic biomasses were examined using X-ray diffraction (XRD), scanning electron microscope (SEM), and Fo...
Verbena officinalis L. is a traditionally important medicinal herb that has a rich source of bioactive phytoconstituents with biological benefits. The objective of this study was to assess the metabolic profile and in vitro biological potential of V. officinalis. The bioactive phytoconstituents were evaluated by preliminary phytochemical studies, e...
Dietary interventions have captured the attention of nutritionists due to their health-promoting aspects, in addition to medications. In this connection, supplementation of nutraceuticals is considered as a rational approach to alleviating various metabolic disorders. Among novel strategies, prebiotic-supplemented foods are an encouraging trend in...
Emulgel is a new innovatory technique for drug development permitting controlled release of active ingredients for topical administration. We report a stable emulgel of 4% Piper nigrum extract (PNE) prepared using 80% ethanol. The PNE-loaded formulation had an antioxidant activity of 84% and tyrosinase inhibition was 82%. Prepared formulation rende...
Poultry production contributes markedly to bridging the global food gap. Many nations have limited the use of antibiotics as growth promoters due to increasing bacterial antibiotic tolerance/resistance, as well as the presence of antibiotic residues in edible tissues of the birds. Consequently, the world is turning to use natural alternatives to im...
Antioxidants from natural sources are extensively attaining consideration to avert the skin from damage and aging caused by free radicals. Flaxseed (Linum usitatissimum L.), a natural therapeutic agent, was meant to be explored cosmeceutical by quantifying its potential phytoconstituents and to be incorporated into a microemulgel for topical use. H...
Viral infections are a major cause of severe, fatal diseases worldwide. Recently, these infections have increased due to demanding contextual circumstances, such as environmental changes, increased migration of people and product distribution, rapid demographic changes, and outbreaks of novel viruses, including the COVID-19 outbreak. Internal varia...
Cancer is a severe condition characterized by uncontrolled cell division and increasing reported mortality and diagnostic cases. In 2040, an estimated 28.4 million cancer cases are expected to happen globally. In 2020, an estimated 19.3 million new cancer cases (18.1 million excluding non-melanoma skin cancer) had been diagnosed worldwide, with aro...
Zearalenone (ZEN) is a highly toxic non-steroidal mycotoxin produced via some Fusarium species that intimidate the agricultural and food industry. Therefore, it is an intense need for different groups to develop some novel, rapid, reliable, and precise analytical methods for ZEN detection to ensure food safety. Although various analytical technique...
The beany flavor adversely influences consumer acceptance of soymilk (SM) products. Thus, in this work, the co-fermentation of isolated new yeasts (Kluyveromyces marxianus SP-1, Candida ethanolica ATW-1, and Pichia amenthionina Y) and Kluyveromyces marxianus K (a commercial yeast) along with an XPL-1 starter (including five strains of lactic acid b...
Goat milk (GM) is an excellent alternative to cow milk and has recently been used in commercial infant formula preparation due to its superior fat composition. Here, the fatty acid (FA) composition, triacylglycerol (TAG) molecular species, thermal behavior and infrared spectra of extracted milk fat from the milk of the two main breeds of dairy goat...
With an increasing demand for industrial dyes in our daily lives, the water conditions have become worse. Recently, the removal of such environmentally hazardous pollutants from wastewaters through photocatalytic degradation has been drawing increased attention. Three mesoporous nanophases of BiFeVOx.y as (Bi2FeIIIV1-yO5.5-y) visible light photocat...
Fruit juices (FJs) are frequently taken owing to their nutritious benefits, appealing flavour, and vibrant colour. The colours of the FJs are critical indicators of the qualitative features that influence the consumer's attention. Although FJs' intrinsic acidity serves as a barrier to bacterial growth, their enzymatic stability remains an issue for...
γ-Tocopherol-5,6-quinone (tocored) is a crucial minor component of edible oils. It has been certified to endow oils with an orange-red color and antioxidant activity. The tocored performance in lipid systems when exposed to heat should be investigated. Thus, the kinetics and thermodynamics of tocored degradation in lipid systems with various degree...
Egg white protein (EWP) is susceptible to denaturation and coagulation when exposed to high temperatures, adversely affecting its flavour, thereby influencing consumers’ decisions. Here, we employ high-voltage cold plasma (HVCP) as a novel nonthermal technique to investigate its influence on the EWP’s flavour attributes using E-nose, E-tongue, and...
Whether or not hydrogen gas (H2) can reduce cadmium (Cd) toxicity in Ganoderma lu- 33
cidum has remained largely unknown. Here, we reported that Cd-induced growth inhibition in G. 34
lucidum was significantly alleviated by H2 fumigation or hydrogen-rich water (HRW), evaluated by 35
lower oxidative damage and Cd accumulation. Moreover, the ameliorat...
It has been generally proven that the goaty flavor negatively affects consumer acceptance of goat milk (GM) products. In this study, the co-fermentation of isolated new yeasts with lactic acid bacteria (LAB) was applied to improve the aromatic properties of new fermented GM beverages. Microbial count, acidity, syneresis, water holding capacity, rhe...
The fast developments in pesticide-loaded nanodelivery systems over the last decade have inspired many companies and research organizations to highlight potential applications by employing encapsulation approaches in order to protect the agricultural crops. This approach is being used to retard the indiscriminate application of conventional pestici...
Borage seed oil (BSO), peppermint oil (PO) and lycopene (LC) have accomplished a lot of interest due to their therapeutic benefits in the food and pharmaceutical sectors. However, their employment in functional food products and dietary supplements is still precluded by their high susceptibility to oxidation. Thus, the encapsulation can be applied...
Recently, camel milk (CM) has been considered as a health-promoting icon due to its medicinal and nutritional benefits. CM fat globule membrane has numerous health-promoting properties, such as anti-adhesion and anti-bacterial properties, which are suitable for people who are allergic to cow’s milk. CM contains milk fat globules with a small size,...
To study the impacts of thermosonication (TS), the spinach juice treated with TS (200 W, 400 W, and 600 W, 30 kHz, at 60±1 °C for 20 mint) were investigated for bioactive compounds, antioxidant activities, color properties, particle size, rheological behavior, suspension stability, enzymatic and microbial loads. As a result, TS processing significa...
Recently, food industries are directing on the promotion of innovative food matrices fortified with bioactive compounds in order to enhance the consumer's health. Octenyl succinic anhydride modified starches (OSA-MS) such as Hi-cap100 (HCP) and purity gum 2000 (PUG) were used to fabricate emulsions co-entrapped with borage seed oil (BSO), resveratr...
Cowpea is a leguminous crop that has received widespread attention due to its high nutritional value. However, it is prone to losing some of its nutritional content due to the long cooking process. In this study, fourteen cowpea genotypes were evaluated for their chemical properties before and after cooking, along with the effect of different cooki...
In recent years, there is an increasing interest of using the essential oils (EOs) based nanoemulsions as natural antioxidants candidates for wide range of food applications. The upsurge in this current trend is a clear indication highlighting the consumer’s demand for healthier food products with improved stability, safety and fresh-like
sensory p...
The standard food for feeding babies is breast milk (BM). There is a growing interest in research related to the composition and positional distribution of fatty acids (FAs) in BM due to their role as the primary source of energy, essential FAs, and other physiological functions in the body. The purpose of this study was to assess the extent of cha...
The current study aimed to optimize the process for ready-to-eat extruded fish powder preparation and to ascertain the impact of two methods on fatty acid profiles. For the investigation, Labeo rohita (Rohu) fish was first minced, extruded, and microwave vacuum-dried. The results show that the yield for extruded fish powder (EFP) fluctuated from 22...
Triacylglycerols (TAGs) are considered the main component of milk fat; possess significant functional roles from the technological, nutritional and physiological points of view. In this study, an ultra-performance liquid chromatography coupled with quadruple time-of-flight mass spectrometry was applied to identify the molecular species composition...
Lipids enriched in polyunsaturated fatty acids are very susceptible to oxidation, causing the formation of potentially harmful oxidized products. Hence, it is critical to keep the temperature as low as possible during reaction and storage. In this study, five commercial immobilized lipases were evaluated for their capability to produce novel struct...
In the last decades, pharmaceutical interested researches aimed to develop novel and innovative drug delivery techniques in the medical and pharmaceutical fields. Recently, phospholipid vesicles (Liposomes) are the most known versatile assemblies in the drug delivery systems. The discovery of liposomes arises from self-forming enclosed phospholipid...
Novel structured lipids (SLs) enriched with medium-and long-chain triacylglycerols (MLCTs) were synthesized to combine the benefits of both arachidonic acid and medium-chain fatty acids; however, they are susceptible to oxidative degradation. In this work, the influences of the partial replacement of whey protein isolate (WPI) as the primary wall m...
Corn germ oil is removed from the milled germ using a conditioning (heating) process, followed by mechanical expelling and/or hexane extraction. In this study, the effect of pretreatment by oven roasting (OR) and microwave (MW) radiation on wet-milled corn germ was investigated. Three OR temperatures (125, 150, and 175 °C) were used with 60 min exp...
Breast milk consumption reduces the incidence of necrotizing enterocolitis (NEC) in preterm infants compared to formula. Branched-chain fatty acids (BCFAs) are present in breast milk but not in most formulas intended for preterm infants. We aimed to determine the composition of BCFAs in the breast milk of mothers with preterm infants, and to unders...
Questions
Question (1)
How can i prepare a sample of non-volatile polar metabolites for NMR analysis?
my samples are fermented soymilk, i want to analyze the non-volatile polar metabolites by 1 H NMR spectroscopy. i used D2o for the preparation but i could not.
"All samples were lyophilized into powder and 0.1 g of each sample was vortexed with deuterium oxide (99.9% D2O, 1 mL) containing 0.05% (m/v) sodium 3-(trimethylsilyl) propionate-2,2,3,3-d4 (TMSP) as an internal standard. After centrifugation at 21912g and 4 °C, a 600 μL aliquot of the supernatant was transferred to a 5 mm NMR tube for spectroscopy".
best regards