Food additives are used to protect food, increase quality and extend shelf life in many stages, from production to consumption of food. Colorants added by food producers to color food or to adjust the color to desired level are among the commonly used food additives. Considering today's developing production technologies, foods fade or discolor at various stages of processing, storage, and sale due to physical and chemical conditions such as heat, light, pH and oxygen. Colorants are used to regain these color losses, to enhance weak colors, to give color to the food that is actually colorless, and to win back the favour of customers by hiding low quality. Therefore, the most used food colorants in Canada, China, European Union, Mexico and United States of America were presented. The chemical name, chemical structure, common uses, acceptable daily intake (ADI), and toxicity literature of six most used artificial food colors were reviewed.

This study aims to investigate the views and awareness level of nutrition and dietetics undergraduates about genetically modified organisms (GMO). A total of 228 university students participated in the research (130 female, 98 male students). During data collection, 8 open-ended questions and attitude scale questionnaire (30 questions) were applied in order to determine the demographic features and GMO knowledge of students. Students’ replies to questions; “Do you think GMO technology is beneficial or harmful? If it's beneficial, why? If it is harmful, why?” 76.8% stated that they found it harmful. To the question, “if it is harmful why?” students replied, “they cause cancer”. There is a statistical difference between the answers of first and third-year students. To the question, “have you heard about the precautions that were taken by the ministry? If yes, do you think they are sufficient?” 76.80% students stated that they were not aware of the precautions that were taken by the ministry. 53 participants replied to this question as “I have an idea about this.” But to the question “Is it sufficient?” they stated that they are not sure about it. There is a statistical difference between graduates of Vocational High School and Anatolian High School. In this assessment, it was seen that the basic knowledge of students about GMO is enough, but they experience confusion. Most of the students believe that GMO technology is harmful and has some conceptual errors. Positive and negative sides of GMO technology should be expressed clearly. It was concluded that course curriculums should include topics that will increase knowledge and awareness related to GMOs. Additionally, courses can be given selectively in the field of biotechnology so that confusion about GMO’s can be eliminated.

Pseudomonas aeruginosa, belonging to the Pseudomonadaceae family, is Gram-negative, rod-shaped, motile, aerobic, endospore negative, oxidase and catalase positive. It is widely found in nature and isolated from soil, plants, water and animals. It can grow rapidly on the surface of the food and form oxidized products and mucous substances. P. aeruginosa, one of the leading foodborne pathogens, causes important concerns in food safety due to being a source of contamination, causing food poisoning and antimicrobial resistance in animals, forming biofilms and difficulties in preventing biofilms. In this review, information on history, microbiological, cultural and biochemical characteristics, virulence factors and pathogenicity of P. aeruginosa are given. In addition, infections caused by P. aeruginosa and its presence in food are described.

Essential oils (EOs) are known for its antimicrobial activity against several pathogenic bacteria. The present work evaluated the antimicrobial activity of 15 different EOs on survival of different strains of different Staphyloccocus aureus strains isolated from traditional cheeses by disc diffusion method. The most antimicrobial activity on the strains was found as oil thyme oil (mean zone diameter 23.203 mm). Clove oil and black seed oil had the highest antimicrobial activity after thyme oil with average zone diameters of 13.698 mm and 11.267 mm respectively. Hypericum perforatum L. oil (mean zone 6.209 mm), ginger oil (mean zone 6.250 mm) and garlic oil (mean zone 6.267 mm) were the lowest antimicrobial activity. New studies about antimicrobial effect of EOs in vivo conditions are recommended.

Propolis is attracting great interest due to functional effects such as antibacterial, antioxidant and anticancer. Therefore, studies about the use of propolis in food products and increasing propolis consumption in human nutrition have increased in recent years. Propolis contains phenolic compounds, essential oils, aromatic acids and waxes which are responsible for biological effects. Many factors such as plant resources, geographical regions and environmental conditions affect the chemical composition of propolis. Propolis enrichment in food products to improve the nutritional value, quality and functionality of food have been investigated in many studies. Furthermore, it was reported that propolis can meet the demand of consumers about the use of natural food additive in food manufacturing. The aim of the present study was to introduce the physicochemical composition and biological activity of propolis and review the studies about its applications in food products.

Concern over food authenticity has increased as a result of an increase in the consumption of processed foods containing meat or animal products. This raises a number of issues where the presence of pork in such foods is considered unacceptable in most Muslim and Jewish communities around the world. It also applied to the prohibition of beef consumption among Hindus. In order to ensure the absence of unwished meat products or mixing of meats from different sources in processed foods, a specific and sensitive test is essential. For this purpose we developed a molecular test based on DNA amplification by polymerase chain reaction (PCR) of the cytochrome b gene followed by reverse line blot analysis (RLB). Using this method many samples may be treated simultaneously and meat origins can easily be detected from processed foods or foods containing mixed meat sources; also, added pork components such as fat may be identified by this methodology. The PCR/RLB method is considered to be a sensitive and specific technique; it can detect one nucleotide change within the PCR-amplified DNA segment.

In social & economic science disciplines, the lack of strong theories is often reflected in the lack of well-accepted common metrics defined by a UNIT. PAHU Method vs. PC is developed to investigate the feasibility of developing well-grounded common metrics/unit to advance behavioural, economic-social, food security & science research, both in terms of advancing the development of theory and increasing the utility of research for policy & practice. In addition aiming, to consider whether a set of criteria can be developed for understanding when the measurement of a particular construct is ready to be standardized & to explore how the research community can foster a move toward standardization when it appears warranted. In this globalised society, even imperial measures are defined with reference to the metric/unit standards. A radical evaluation method change in global food systems is needed to meet the challenges. State of the art of PAHU Method /Age and Gender Corrected Per Capita (PCagc) is to evaluate demographic structure, consumer & past and future food consumption potential of developed & developing countries, target populations, their food sufficiency & also food security evaluations of family and households. It involves systematic attempts to create awareness of 19.4 percentage UNIT error inherent to PC & pave the way to food - other goods consumption evaluations plus global impact of hunger & environmental issues until 2020-2050-era. PAHUM was applied & evaluated EU28 demographic structure & food consumption issues for 1999/2010/2020. Now it focuses on research with systems approach, contributing to the development of tomorrow’s food systems for family/household evaluations including CO2 emissions-biodiversity relations. A radical evaluation method change in global/EU food systems is needed to meet the global challenges, including family/household on UNIT basis. The principal is always to ask questions “Why”, “What” and “How” will naturally unfold and found the reality of PAHUM. Reality is reality…

The Corona Virus is the pandemic all over the world. This viral infection attacked all over the world like as disaster of viral infection which causes morbidity and mortality in different regions of world like Asia, Europe, and Africa etc. The different countries control the spread and complications of covid-19 like Acute Respiratory Distress Syndrome in well manner. In second wave there was again out break of covid-19 some regions of world. Here we discuss the causes of reoccurrence and their preventive measurements from our break effects of Covid-19.

The roles of protein in bodybuilding and the regulation of biological processes are important in sustaining life. A large amount of protein is required by both humans and animals and this cannot be supplied by only conventional sources. This is because of the rapid increase in world population. The present sources of protein will not meet global protein demand in years to come. Scientists explore the production of single-cell protein (SCP), as an alternative source of protein, through the utilization of wastes and low-value materials. SCP can supply high-quality protein containing both essential and non-essential amino acids that can be utilized by humans and animals. Protein from microbial biomass is cheaper than animal proteins because the substrates used in the production are generally cheaper and more readily available. Moreover, the production process does not require arable land and the entire process can be completed within a short time. This article reviewed the process of SCP production. Different raw materials used in the production and variations in growth media preparation methods were discussed. Various sources of fermentation microorganisms and their potential substrate were reviewed. Growth media enrichment using different carbon, nitrogen, and mineral sources was also discussed.

The studies on phage applications that provide successful results in biocontrol of foodborne pathogens and offer an environmentally friendly approach have been increasing today. Phages are viruses that can infect and kill the specific target bacterial cell. Salmonella is one of the most important pathogenic microorganisms that leading causes of food-borne illnesses called salmonellosis. Meat products especially chicken meat, fresh eggs, dairy products, ready-to-eat foods, seafood products and all kinds of contaminated food can be cause of salmonellosis. In this review, the phage application studies to control of Salmonella in food systems were summarized taking into account the research studied in recent years.