Browsing by Author "Ates, Umut"

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Changes in Quality Traits and Phytochemical Components of Blueberry (Vaccinium Corymbosum Cv. Bluecrop) Fruit in Response To Postharvest Aloe Vera Treatment
(Taylor & Francis inc, 2022) Ates, Umut; Islam, Ali; Ozturk, Burhan; Aglar, Erdal; Karakaya, Orhan; Gun, Sefa
The effect of Aloe vera application (33% and 66% as dipping, AV) on 'Bluecrop' blueberry's (Vaccinium corymbosum) quality properties such as weight loss, respiration rate, fruit color, soluble solids content (SSC), acidity, phytochemical components (vitamin C, total phenolics, and total flavonoids) and antioxidant activity was investigated during the cold storage (at 0 +/- 0.5 degrees C and 90 +/- 5% RH) for 28 days. During cold storage, significantly lower weight loss was recorded in fruit treated with AV compared to control. At the end of the cold storage, the weight loss was 20% lower in AV treated fruits and AV concentration was not effective in weight loss. On the contrary, the respiration rate (except for the 7th day) and fruit firmness were higher in these fruit. It was observed that color changes were less in AV-treated fruit during storage. In general, AV-treated fruit had significantly lower SSC, while acidity and vitamin C were higher. Moreover, 66% AV application was more effective in delaying the loss of vitamin C at the end of storage. During cold storage, 33% AV-treated fruit had significantly higher total phenolics (except day 28) and total flavonoids content compared to control. In the last two measurements of the cold storage, it was determined that fruit dipped in AV had higher antioxidant activity (both DPPH and FRAP assays) compared to control fruit. As a result, it was revealed that postharvest AV gel applications can be used as an effective postharvest tool to delay the loss of quality, the loss of phytochemical components and antioxidant activity of the blueberry fruit.
The Influence of Fruit Size on Quality Attributes and Bioactive Compounds of Sweet Cherry Fruit
(Springer, 2023) Aglar, Erdal; Saracoglu, Onur; Ozturk, Burhan; Karakaya, Orhan; Ates, Umut
The study was carried out to determine the effect of different fruit sizes on the quality and bioactive compounds of sweet cherry (Prunus avium L. cv. '0900 Ziraat'). The fruit was harvested on the basis of Centre Technique Interprofessionnel des Fruits et Legumes (CTIFL) color category 5, mahogany. The fruit was separated for analysis according to the CTIFL scale: S21 (21 mm), S22 (22 mm), S24 (24 mm), S25 (25 mm), and S26 (26 mm). As the size of the fruit increased, the firmness decreased. The fruit color values varied depending on fruit size. It was determined that the increase in size of the fruit reduced the color values. The soluble solids content and vitamin C values occurred the differences with effect of fruit size. The increasing of fruit size occurred the decreasing in vitamin C content and the increase in the amount of soluble solids. The effect of fruit size on total phenolics, flavonoids, and antioxidant activity was significant. While the highest value of total phenolic content was obtained in S25, the lowest value was determined in S26. In both DPPH and ferric reducing antioxidant power assays, the lowest antioxidant activity was obtained in S26-sized fruit. The individual phenol with the highest concentration in sweet cherry was catechin, and p-coumaric was the individual phenolic with the lowest concentration. There were differences in the concentrations of individual phenolics between fruit sizes. However, it cannot be stated that fruit size had an effect on individual phenolic concentration because this effect was inconsistent.
Training System Plays a Key Role on Fruit Quality and Phenolic Acids of Sweet Cherry
(Springer, 2022) Karakaya, Orhan; Ozturk, Burhan; Aglar, Erdal; Gun, Sefa; Ates, Umut
In the study, the effects of different training systems (Steep Leader: SL, Spanish Bush: SB and Vogel Central Leader: VCL) on quality properties and bioactive components of "0900 Ziraat" sweet cherry fruit (Prunus avium L.) were investigated. The size, color and firmness values of the fruit varied depending on training system. The largest fruit was obtained in the SB training system. The fruit on trees trained VCL and SB had higher firmness than the fruit of trees trained SL. The color values of the fruit of VCL were higher than the other systems, while the vitamin C content was lower. The lowest acidity and soluble solids content (SSC) were measured in fruit trees trained SL. The highest values for bioactive compounds as phenolics, flavonoids were measured in fruit of SL training system. In the sweet cherry fruit, the major phenolic acid was catechin. The catechin, rutin, caffeic acid, 4-hydroxybenzoic acid, 4-aminobenzoic acid and transferulic acid content of the fruit in the SL training system were higher than those of SB and VCL. As a result, it was revealed that there is an effect of the training system on fruit quality; SB training system had higher values in terms of fruit size, whereas in terms of bioactive compound content, SL training system had higher values.
Training System Plays a Key Role on Fruit Quality and Phenolic Acids of Sweet Cherry (Feb, 10.1007/S10341-021-00621-2, 2022)
(Springer, 2022) Ates, Umut; Karakaya, Orhan; Ozturk, Burhan; Aglar, Erdal; Gun, Sefa