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    Comparison of anthocyanin profiles in salgams (shalgams) produced with different production procedures
    (Wiley, 2021) Tanguler, Hasan; Bozdogan, Adnan; Aksay, Salih; Kelebek, Hasim; Erten, Huseyin
    Recently, studies on the research of traditional fermented foods and beverages with positive health effects have emerged. Not only the production and consumption of salgam, but also the number of research on salgam is increasing rapidly. There are two principal procedures used by producers for salgam production: (1) the traditional and (2) the direct procedure. In the present study, individual and total anthocyanins in salgams manufactured by traditional procedure, direct procedure, and addition of autochthonous lactic acid bacteria cultures were compared. The lowest total solid, ash, methanol, total phenolic, and color intensity were determined in salgam produced by the direct procedure, while the highest values were determined in salgam produced by the addition ofLactobacillus plantarum. Similarly, the lowest individual and total anthocyanins were determined in salgam produced by the direct procedure. Cyanidin-3, xylosyl-glucosyl-galactoside acylated with ferulic acid was found to be higher than the other individual anthocyanins. The quantities of anthocyanins individually and totally changed significantly for different production procedures. Practical applications Salgam contains high levels of vitamins, minerals, antioxidants, phenolic substances, and anthocyanin. It is a nutritious and healthy drink for people. Consumption of salgam is currently increasing in Turkey and also some European cities. As far as it is known, no previous work deals with the determine and compare the individual and total anthocyanins of salgams produced by using autochthonous LAB starter cultures isolated from various previous salgam fermentations. The aim of this study was to compare not only the salgams produced with the addition of three different autochthonous LAB, but also the individual and total anthocyanins of salgams produced by traditional and direct methods. We found that salgam produced byLb. plantarumrepresented the highest amount of solid matter, ash, and color intensity compared to the other salgams. However, the highest anthocyanin was obtained in salgam produced by the traditional method, and Cy-3, xylglc-gal-acy-fer was found to be higher than the other individual anthocyanins in salgams.
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    Elucidation of key aroma enhancement in cloudy lemon juices by the addition of peel oil using GC-MS-Olfactometry
    (Wiley, 2022) Yetisen, Mehmet; Guclu, Gamze; Kelebek, Hasim; Selli, Serkan
    Volatile substances play a crucial role in the consumer preference of lemon juices. The effects of heat treatment and addition of lemon peel oil to lemon juice (Citrus limon Burm. cv. Kutdiken) on the aroma compounds were elucidated for the first time. Total phenolic, antioxidant activity, acidity, pH and colour properties were also studied. Results revealed that the aroma of the juice samples comprised mostly the terpene compounds. Limonene, gamma-terpinene, beta-pinene and alpha-pinene were the influential terpenes responsible for the distinctive odour of the lemon juice. The addition of the lemon peel oil increased the amounts of the aroma and aroma-active compounds. Besides, the heat treatment had a positive effect on the total phenolics and the antioxidant activity but it caused significant reduction of the aroma compounds. Sensory analysis revealed that the most preferred sample was the juice with lemon peel oil added after pasteurisation.