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The purpose of the paper is to analyze the layer wise security issues in IoT and to obtain the effective security mechanism for jamming attack .

In this study, the authors proposed a multi layer security approach for the detection of DDoS in IoT environment, which protects the smart devices from DDoS, this scheme also reduces the computational cost in the network under mobility condition.

Even though many works have been done for the security of wireless sensor network (WSN), all works have focused on encryption which depends on the key management strategy. In this study, the authors proposed a multilayer approach to analyze the layer wise security issues and also proposed a threshold-based countermeasure (TBC) for replay attack in each layer.

The results indicate that the proposed algorithm lowers the computational costs and energy consumption than in modern schemes. Also, the proposed research work improves the scalability of sensor networks using the TBC.

Discusses the particulation of organic barrier layers, based on laboratory‐bench data, obtained from the exposure of painted panels in low, high or neutral pHelectrolytes. It also discusses their compatibility with the succeeding and preceding layers and the galvanic interactions at the layer substrate interfaces. Aspects like substrate effect, leaching of the micaceous iron powder, role of high temperature and hydrodynamic disturbances and distribution of ultrafine particulates have been highlighted using potential versus time plot, AAS data, and galvanic current measurements and XRD analysis. Exposure tests conducted under ambient conditions and under very strong hydrodynamic disturbances, revealed superior properties of the SiC particulated epoxy based barrier layers.

The purpose of this study was to assess the bacterial viability, antioxidative activity, antimutagenicity and sensory evaluation of fermented onion types by using probiotic starters after fermentation at 37 °C for 24 hours and storage in the refrigerator for 28 days.

For onion fermentation, Lactobacillus acidophilus (LA-5), Bifidobacterium bifidum (BB-12), and Streptococcus thermophilus (ST) were utilised. This research was conducted on three types of onion: white onion, red onion and scallion. With a 5% brine solution, the onions were sliced into 3-5 cm long and 1-2 cm wide slices. The process of fermentation was achieved by adding 2% (10⁸ CFU/ gm) of fresh probiotic starter and incubating it for 24 hours at 37 °C. The fermented onion samples were kept in the refrigerator for 28 days. After fermentation and storage, the pH and total acidity were estimated, the vitality of probiotic bacteria was evaluated in samples of the onion species. The Gas chromatography-mass spectrometry (GC-MS) technique was used to identify the bioactive components in fermented onion types. The antioxidant activity of fermented onions was measured using the 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) radical scavenging activity assay and the hydroxyl radical scavenging activity test. The Ames test was used to detect the antimutagenicity of fermented onion samples.

After fermentation, the fermented scallion (p = 0.036) has the highest vitality of all the starter bacteria species. The fermentation of onion types produced a pH of between 4.1–4.7 and 0.19–0.23% total acidity, which is in the range of reduced 3.1–3.5 pH values and 0.42–0.63% total acidity after 28 days. The viability of Lactobacillus acidophilus and Bifidobacterium bifidum in fermented scallions was Log. 7.79 and 7.57 CFU/gm. The GC-MS technique found 14 bioactive compounds in fermented white onions and 13 compounds in fermented white onions, with 15 compounds in scallion fermentation. The majority of these bioactive compounds are strong antioxidants. The antioxidant properties of fermented scallion significantly increased after 28 days of storage time, showing an inhibitory effect on the DPPH assay (p = 0.02) and the scavenging activity of the hydroxyl radical assay (p = 0.01). Sensory evaluation tests revealed that the fermented scallion was a suitable product in terms of appearance, aroma and overall acceptability.

Commercially accessible probiotic foods account for a sizable portion of the consumer market. Furthermore, as consumer interest in healthy eating grows, so does demand for plant-based goods. All onion types fermented with probiotic bacteria have many chemical compounds that have both antioxidant and carcinogenic activity. The fermented scallion onion sample was significantly superior to the rest of the other types of onions.

After the introduction of functional food term in 1980s, production and marketing of functional food in Japan, USA and European markets has developed rapidly. Compared to these developed countries, the market size of the functional food in Turkey is very limited. The purpose of this study is to explore reasons of limited development and marketing strategies regarding the size of expenditure, governmental legislation and consumer preferences and highlight the type of functional food products available at large retail chains of important suppliers in Turkey.

Description and exploration of market size and expenditure were determined by using Euromonitor International (2017). The factors influencing consumption and attitudes toward functional food purchasing were evaluated by studying literature research. The number and types of functional foods in the most important supermarket chains were determined to show the growth rate in Turkey. Products in the markets were determined based on the direct observation available, and functional foods sold in the markets were noted at the visits and tabulated. The type of functional food product, its category, the main benefit offer to the consumer and the brand and status of the food processing industry (national or not) were identified. Government legislation on special health claims for functional foods was stated.

Market size of Turkey per capita expenditure was approximately US$5.8m, which was very low, whereas that of Japan and USA was US$86.7m and 100.2m, respectively, in 2017. The variety of functional food products was at a very low level, and functional food market share was limited compared to powerful countries like Turkey. International companies had a higher market share than national companies. Danone with dairy functional foods was the biggest company in Turkey market. Literature studies showed that Turkish people have less knowledge about functional foods and need education. According to reviews, socio-demographic characteristics such as age, education, income levels, gender and prices were important indicators influence consumer awareness and consumption of functional foods. Consumer’s knowledge must be increased with their health benefits by education. Reviews showed that nearly 60 per cent of people did not have any information about functional food and women were more aware and the most active user group. Dairy products were the most preferred functional foods in Turkey. Because of limited awareness, there is a need for elucidating studies that are targeting potential consumers. Turkey did not have labeling system to claim foods functionality on packages and did not permit foods that contribute to health maintenance and/or recovery from disease, but Republic of Turkey Ministry of Food, Agriculture and Livestock applies some laws and regulations.

This study provides market study and detailed research about marketing strategies and legislation of functional foods in Turkey. People have high demand to consume and there are big potentials of functional food marketing and opportunities for food industries. But to increase consumption and marketing size, it needs education of consumer, advertising and some adjustment of legislation by government.