Publications by authors named "Nazan Tokatlı Demirok"

Poppy vinegar with functional properties is a fermented product. This study evaluated traditionally produced poppy vinegar. The study was conducted on poppy vinegar to determine the maximum increase in angiotensin converting enzyme (ACE) inhibitory activity %, total phenolic content (TPC), and radical scavenging activity (DPPH) of the vinegar at different combinations of ultrasound treatment duration (2-14 min) and amplitude (40-100%).

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Thermosonication (TS), also known as ultrasonic-assisted heat treatment, is gaining attention in liquid product processing due to its ability to improve quality parameters and can serve as an alternative to thermal treatments. The parsley juice (TS-PJ) was subjected to thermosonication treatment (frequency: 26 kHz; power: 200 W; amplitude 60, 70, 80, 90, and 100%; temperature: 40, 45, 50, 55, and 60 °C; time: 4, 6, 8, 10, and 12 min) and was compared with untreated control parsley juice (C-PJ) and pasteurized treated (P-PJ) (85 °C/2 min) parsley juice samples. The objectives of the research work were to determine the effect of thermosonication on the quality attributes such as total chlorophyll and ascorbic acid of parsley juice using particle swarm algorithm (PSO), multiple linear regression (MLR), and response surface methodology (RSM).

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Article Synopsis
  • The research focused on how ultrasound treatment affects the quality of poppy sherbet enriched with functional bee bread, analyzing its antioxidant and antimicrobial properties, phenolic and sugar content, and sensory qualities during storage.
  • It utilized response surface methodology (RSM) to optimize the functional properties of the sherbet, revealing that antioxidant activity and phenolic content changed over time, particularly noting a decrease in total phenolic content between the 0th and 21st days.
  • Key findings indicated gallic acid as the main phenolic compound and citric acid as the predominant organic acid, while storage led to a decline in anthocyanin content, with overall data providing a foundation for future research.
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Bee bread (perga) is a natural bee product formed by the fermentation of the pollen collected by bees via lactic acid bacteria and yeasts. This study aims to determine the bioactive compounds, amino acid, sugar, and organic acid profile of bee bread samples collected from the Ardahan province of Türkiye. The highest total phenolic, total flavonoid, and DPPH values in bee bread samples were determined as 18.

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Grape juice is a widely consumed fruit due to its bioactive compounds, minerals, and aroma components. Our objective was to investigate ultrasound treatment of black grape juice affects its bioactive components due to using response surface methodology (RSM) and artificial neural network (ANN) optimization. At the same time, mineral components, sugar components, organic acids, and volatile aroma profiles were compared in black grape juice treated with thermal and ultrasound pasteurization.

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Poppy is an important edible plant containing bioactive components. This study aimed to produce good-tasting poppy sherbet by determining the content using a response surface methodology (RSM). At the same time, bioactive components, phenolic compounds, and color properties were investigated in optimum poppy sherbet during storage; 0.

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Purpose: The aim of this study was to establish whether Acetobacter ghanensis, the probiotic characteristics of which were evaluated previously, attenuates gliadin-induced toxicity in intestinal epithelial cells with gluten-digestive and immunoregulatory properties.

Methods: A co-culture model of human intestinal epithelial cell (Caco-2) monolayers on top of peripheral blood mononuclear cells (PBMCs) obtained from patients with celiac disease (CD) was established. The gluten-digestive properties of A.

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Gilaburu ( L.) is an important fruit that has been studied in recent years due to its phytochemicals and health benefits. In this study, traditionally produced vinegar made from gilaburu fruit (C-GV) was evaluated.

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