Development of Ultrasound-Processed Poppy (Papaver rhoeas L.) Sherbet Enriched with Bee Bread Using Response Surface Methodology: Changes in Shelf Life.

This research aimed to investigate the effects of ultrasound treatment on the quality characteristics of optimized functional bee bread-enriched poppy sherbet. Antioxidant activity capacity, antimicrobial activity, phenolic compounds, ascorbic acid, organic acid and sugar composition, and sensory properties were performed under storage conditions. The present research was the first to express the effect of ultrasound on the bioactive components in a functional poppy sherbet enriched with bread, using the response surface methodology (RSM) optimization. The maximum optimization, radical scavenging activity (DPPH), total phenolic content (TPC), total anthocyanin content (TAC), and general acceptability values were determined. When comparing the 0th- and 21st-day samples of bee bread-fortified functional poppy sherbets, it was observed that the TPC was decreased (p < 0.05). It was also noted that there was no significant decrease in the total flavonoids on day 21. In storage, a decrease in anthocyanin content was observed. Among phenolic compounds, gallic acid had the highest content. While citric acid was found in the highest amount of organic acid, sucrose (6.25 g/L) was found in the highest amount of sugar components 0th day, while MIC values against Micrococcus luteus were lower. The data from this study will be important input for future work.

Bee Bread as a Functional Product: Phenolic Compounds, Amino Acid, Sugar, and Organic Acid Profiles.

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 18.35 mg GAE/g, 2.82 mg QE/g, and 3.90 mg TEAC/g, respectively. Among phenolic compounds, gallic acid had the highest value at 39.97 µ/g. While all essential amino acids except tryptophan were detected in the samples, aspartic acid was the most dominant, followed by pyrroline and glutamic acid. Among sugars, fructose was seen at the highest level. Succinic acid, among organic acids, had the highest amount at 73.63 mg/g. Finally, all the data were subjected to a principal components analysis (PCA). Bee bread samples were grouped according to the analysis results of the districts they were collected from. This study provides information about the bioactive components and some chemical properties of bee bread, a natural product that has been the subject of recent research. It also contains essential data for future functional food production.

Relationships Linking the Element, Bioactive, Hydroxymethylfurfural, Color of Kars Honeys: a Chemometric Approach.

Honey is a natural food substance considered among functional foods due to its positive effect on human health. Quality of honey is significantly influenced by environmental conditions and botanical origin. This study aimed to determine the element content in honey from Kars, Turkey, as well as the bioactive compounds and certain physicochemical and biochemical properties such as hydroxymethylfurfural (HMF) and color in a chemometric approach. In this study, a total of 41 local honey samples were analyzed. The levels of elements Al, As, B, Cd, Cr, Cu, Fe, Mg, Zn, and Pb were determined by inductively coupled plasma optical emission spectrophotometer (ICP-OES). The mean concentrations of the elements in the samples were identified as 3.09, 0.64, 59.07, 0.02, 0.14, 0.17, 1.76, 9.32, 0.78, and 0.33 µg/g for Al, As, B, Cd, Cr, Cu, Fe, Mg, Zn, and Pb, respectively. The mean bioactive compounds of the honey samples were determined as phenolic content (19.74 mg GAE/100 g), flavonoid content (4.47 mg CE/100 mg), and DPPH (49.08% inhibition). The HMF levels of all samples conformed to the honey standards of the Codex Alimentarius and Turkish Food Codex. HMF was not negatively correlated with the other color parameters except for the a* (redness or greenness) value. This study showed that clustering analysis (CA) and principal component analysis (PCA) are useful for distinguishing the originality of honey samples by using element content, bioactive properties, HMF, and color and were useful in defining the Kars honey type.

Ultrasound Processing of Vinegar: Modelling the Impact on Bioactives and Other Quality Factors.

In recent years, non-thermal technology has been used for the enrichment of ultrasound bioactive components. For this purpose, it was applied to tomato vinegar and modeled with response surface methodology (RSM) and artificial neural network (ANN). At the end of the RSM, cupric reducing antioxidant capacity (68.64%), 1,1-diphenyl-2-picrylhydrazyl (62.47%), total flavonoid content (2.44 mg CE/mL), total phenolic content (12.22 mg GAE/mL), total ascorbic acid content (2.53 mg/100 mL) and total lycopene (5.44 µg/mL) were determined. The ANN model has higher prediction accuracy than RSM. The microstructure, microbiological properties, sensory analysis, ACE (angiotensin-converting-enzyme) inhibitor and antidiabetic effects of the ultrasound-treated tomato vinegar (UTV) (8.9 min and 74.5 amplitude), traditional tomato vinegar (TTV) and pasteurized tomato vinegar (PTV) samples were then evaluated. UTV was generally appreciated by the panelists. It was determined that the microbiological properties were affected by the ultrasound treatment. UTV was found to have more effective ACE inhibitor and antidiabetic properties than other vinegar samples. As a result, the bioactive components of tomato vinegar were enriched with ultrasound treatment and positive effects on health were determined.