Browsing by Author "Ozturk, Burhan"

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Assessing the Impact of Krymsk 5, Piku 1 and Gisela 6 Rootstocks on Morphological and Quality Characteristics of Sweet Cherry
(BMC, 2025) Ozturk, Burhan; Belen, Serkan; Aglar, Erdal
BackgroundModern orchards are established with intensive planting systems that ensure early fruiting, high fruit yield and quality, and minimize labor costs, especially during harvesting. To meet the expectations of intensive planting systems, the most important factor is the selection of suitable rootstocks for climate and soil conditions. This study was conducted to determine the effects of combinations created with cold-resistant Krymsk 5, semi-dwarf rootstocks Gisela 6 and Piku 1, which are suitable for dense planting, and the sweet cherry varieties 0900 Ziraat and Regina, on their morphological, pomological, and biochemical properties.ResultsTree height, fruit weight, and total phenolic content in trees grafted onto Krymsk 5 rootstocks, and fruit firmness in trees grafted onto Gisela 6 rootstocks, were higher than in other rootstocks. The 0900 Ziraat cultivar showed significantly higher fruit weight, fruit width, and fruit length than the Regina cultivar. In contrast, the a*, b* values, vitamin C, anthocyanin, and antioxidant content in the Regina cultivar were significantly higher than those in the 0900 Ziraat. The rootstock x cultivar interactions had a significant effect on some properties.ConclusionIt was revealed that trees grafted onto Krymsk 5 rootstocks exhibited greater vegetative growth, and the fruit obtained from these trees was richer in terms of phytochemical content. Krymsk 5 is a potential rootstock for grafting with elite local cherry scions.
Biochemical Characterization of Mulberry (Morus Spp.) Genotypes From the Turkiye (Hizan, Bitlis): a Comprehensive Analysis of Fruit Properties and Bioactive Compounds
(Wiley, 2024) Uyak, Cuneyt; Aglar, Erdal; Ozturk, Burhan; Dogan, Adnan; Tekin, Onur
The present study was carried out to assess the fruit traits and phytochemical properties of 39 mulberry genotypes [Morus alba L. (16 white mulberry), Morus rubra L. (11 red mulberry), and Morus nigra L. (12 black mulberry)] selected in Bitlis province (Hizan) of Turkiye. Approximately, 1 kg fruit were hand-harvested from each genotype. The fruit size, fruit color, pH, titratable acidity, soluble solids content (SSC), vitamin C, total phenolics, total flavonoids, antioxidant activity, and individual phenolic compounds were determined. The fruit weight varied between 1.80 and 5.84 g in black mulberry, 1.22 and 4.18 g in red mulberry, and 1.29 and 3.10 g in white mulberry. In white mulberry, SSC was determined to be between 19.00% and 38.86%, and in black and red mulberry it was between 11.86% and 21.90% and 12.60% and 18.90%, respectively. The titratable acidity rate, which varied depending on the species, was lower in white mulberry, but the highest acidity rate was recorded in red mulberry. Vitamin C was determined as 33.13 mg 100 g(-1) in red mulberry, 24.10 mg 100 g(-1) in black mulberry, and 14.03 mg 100 g(-1) in white mulberry. Total phenolics in mulberries varied depending on the species, and the red mulberry fruit contained higher phenolic substances, followed by black and white mulberries. The total flavonoids varied between 0.27 and 7.83 g QE kg(-1), whereas the flavonoids varied depending on the species and genotype. The highest values in terms of bioactive compounds were recorded in fruits of the 13HZN23 and 37 genotypes. Black and red mulberry fruit were found to have higher levels of individual phenolic content than the white mulberrry fruit.
Changes in Fruit Quality Properties and Phytochemical Substances of Kiwifruit (Actinidia Deliciosa) Grown in Different Agro-Ecological Conditions During Cold Storage
(Bmc, 2024) Ozturk, Burhan; Korkmaz, Murat; Aglar, Erdal
Background The changes in the physical structures of the products are the first things that consumers pay attention to. Therefore, it is essential and significant importance to take measures to improve the storage conditions of products and to minimize quality losses. The main objective of the study was to evaluate the effects of agro-ecological conditions on bioactive compounds and fruit quality of kiwifruit during cold storage. The 'Hayward' kiwifruit cultivar grown in Ordu, Giresun, Samsun, Rize, and Yalova provinces of T & uuml;rkiye were kept at 0 +/- 0.5 degrees C and relative humidity of 90 +/- 5% for 150 d. Results The kiwifruit obtained from the provinces of Yalova, Ordu, and Giresun experienced the least weight loss during cold storage. Kiwifruit from Samsun and Yalova provinces had the lowest fruit firmness, while those from Giresun had the highest on 150th d. The changes were observed in the skin and flesh colors of the kiwifruit belonging to all cultivation areas. The amount of vitamin C increased throughout the study in all ecological conditions, but the Yalova province's kiwifruit was found to have the highest levels. Additionally, in all ecologies, kiwifruit showed an increase in antioxidant activity, total phenolics, and total flavonoids, all known to have beneficial effects on human health. The total antioxidant activity and total phenolics were highest in the kiwifruit of Yalova province, but the total flavonoids were found in the kiwifruit of Rize and Ordu provinces. Conclusion The study's results revealed that kiwifruit's bioactive compounds and quality parameters may vary depending on the cultivation area. Additionally, it can be stated that Yalova province kiwifruit experiences the least amount of postharvest quality losses.
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.
Combined Effects of Aloe Vera Gel and Modified Atmosphere Packaging Treatments on Fruit Quality Traits and Bioactive Compounds of Jujube (Ziziphus Jujuba Mill.) Fruit During Cold Storage and Shelf Life
(Elsevier, 2022) Islam, Ali; Acikalin, Raziye; Ozturk, Burhan; Aglar, Erdal; Kaiser, Clive
This study assessed Aloe vera gel (AV) and modified atmosphere packaging (MAP) treatments on weight loss, respiration rate, color, firmness, soluble solids content (SSC), titratable acidity, vitamin C, phenol, flavonoids and antioxidant activity of jujube (Ziziphus jujuba Mill. cv. 'Li') fruit during cold storage and shelf life. Fruit were stored at 0 +/- 0.5 degrees C and 90 +/- 5 % relative humidity (RH) for 35 d followed by 21 +/- 1.0 degrees C and 65 +/- 5 % to simulate shelf life for 4 d. During cold storage, weight loss and respiration rate were delayed by MAP. At the end of cold storage, higher firmness and acidity were measured in fruit treated with MAP compared to control. Also, L*, hue angle, vitamin C, total phenolics, and the antioxidant activity of jujube fruit treated with both AV and MAP were higher than control. However, lower chroma and SSC in fruit treated with MAP were determined. During shelf life storage, higher firmness, L*, hue angle and acidity in fruit treated with MAP were obtained compared to control and AV treatments, whereas lower chroma and SSC were observed. On the last day of shelf life measurement (35 + 4 d), vitamin C, total phenolics, total flavonoids and antioxidant activity (DPPH and FRAP assays) of fruit treated with both AV and MAP was higher than control. In conclusion, it was revealed that AV and MAP treatments could be an effective tool for retarding the losses that occurred in the fruit quality of jujube during cold storage and shelf life. The effect of MAP treatment in maintaining fruit quality was more pronounced.
Effect of Preharvest Biofilm Application Regimes on Cracking and Fruit Quality Traits in '0900 Ziraat' Sweet Cherry Cultivar
(Bmc, 2024) Ozturk, Burhan; Akkaya, Husrev; Aglar, Erdal; Saracoglu, Onur
Background Fruit cracking impacts the quality of sweet cherry, significantly affecting its marketability due to increased susceptibility to injury, aesthetic flaws, and susceptibility to pathogens. The effect of 1% biofilm (Parka (TM)) application regimes on fruit cracking and other quality parameters in the '0900 Ziraat' cherry cultivar was investigated in this study. Fruit sprayed with water were served as control (U1). Fruit treated only once with biofilm three, two and one week before the commercial harvest were considered as U2, U3 and U4, respectively. Fruit treated with biofilm three, two, and one week before harvest were considered as U5; three and two week before harvest as U6; two and one week before harvest as U7; and fruit treated three and one week before harvest as U8.Results In both measurement periods, the lower cracking index was obtained in biofilm-treated sweet cherry fruit. However, the firmness of biofilm-treated fruit was higher than that of the control fruit. The lowest respiration rate was observed in U7, while the highest weight was recorded in U4 and U5 than the control. The biofilm application decreased fruit coloration. The biofilm application also increased the soluble solids content of the fruit. The U2, U3 and U4 applications at harvest showed higher titratable acidity than the control. In both measurement periods, the vitamin C content of the U2, U5, U6, U7 and U8 applications was found to be higher than that of the control. The total monomeric anthocyanin of the U3 and U8 applications was higher than that of the control. Furthermore, the antioxidant activity of the U2, U3 and U5 in the DPPH, and the U7 and U8 in FRAP were measured higher thanthat of the control.Conclusions The application of biofilms has the potential to mitigate fruit cracking, prolong postharvest life of sweet cherries, and enhance fruit firmness.
Effects of Aloe Vera Gel and Modified Atmosphere Packaging Treatments on Quality Properties and Bioactive Compounds of Plum (Prunus Salicina L.) Fruit Throughout Cold Storage and Shelf Life
(Springer, 2023) Avci, Vedat; Islam, Ali; Ozturk, Burhan; Aglar, Erdal
This study assessed the effects of modified atmosphere packaging (MAP) and Aloe vera gel (AV) treatments on fruit quality and bioactive compounds of plum (Prunus salicina L. cv. 'Black Amber') during cold storage and shelf life. The fruit were stored at 0 +/- 0.5 degrees C and 90 +/- 5% relative humidity (RH) for 35 days followed by 21 +/- 1.0 degrees C and 65 +/- 5% to simulate shelf life for 4 days. The lowest weight loss occurred in fruit treated with MAP during cold storage. The respiration rate was lower with MAP. However, the respiration rate was higher in AV-treated fruit. The MAP treatment maintained fruit firmness, but AV treatment had a negative effect. The AV and MAP treatments did not affect chroma or hue angle color values during cold storage but did influence shelf life. The MAP and AV treatments generally did not affect soluble solids content, but they affected titratable acidity. Vitamin C decreased with the extension of cold storage. However, vitamin C was maintained by MAP and AV treatments, with MAP being the most effective treatment. The MAP and AV treatments did not affect antioxidant activity during cold storage. As a result, MAP treatments positively affected the maintenance of quality characteristics and biochemical content by delaying the maturity of plum fruits during cold storage.
Effects of Ga3, Caci2 and Modified Atmosphere Packaging (Map) Applications on Fruit Quality of Sweet Cherry at Cold Storage
(Taylor & Francis inc, 2022) Ozturk, Burhan; Aglar, Erdal; Saracoglu, Onur; Karakaya, Orhan; Gun, Sefa
The aim of this study was to investigate the effects of pre-harvest gibberellic acid (GA(3)) and calcium chloride (CaCl2) and post-harvest modified atmosphere packaging (MAP) applications on fruit quality of sweet cherry during the cold storage. At the end of the cold storage, GA(3)+CaCl2 applications in MAP-applied fruit and CaCl2 in non-MAP-applied fruit significantly delayed weight loss compared to the control. During the cold storage, the decay of CaCl2-applied fruit has not been observed. At the end of cold storage, the a* and firmness values of the fruit treated with GA(3) and CaCl2 were significantly higher than the control. The CaCl2-applied fruit had less soluble solids than the control, but they had significantly higher acidity compared to other applications. In MAP, GA(3)- and CaCl2-applied fruit had higher vitamin C and antioxidant activity values than the control fruit, but their total phenolics were higher. However, the total flavonoids of CaCl2-applied fruit were higher than the control. On fruit in non-MAP, with GA(3) application, less anthocyanin was obtained compared to the control. As a result, GA(3)-treated fruit had a relatively lower bioactive compound content compared to the fruit of the CaCl2 and control applications both during the harvest and the cold storage. However, it has been revealed that GA(3) and CaCl2 applications can be used as significant pre-harvest tools to delay the loss of the fruit firmness.
Effects of Rootstock and Training System on Tree Canopy, Fruit Quality and Phytochemicals of '0900 Ziraat' and 'regina Sweet Cherry Cultivars
(inst Tecnologia Parana, 2023) Yilmaz, Umut Naci; Ozturk, Burhan; Aglar, Erdal; Saracoglu, Onur; Kaiser, Clive
Both '0900 Ziraat' and 'Regina' grafted on 'Krymsk 5', or 'Piku 1' rootstocks were trained to either Upright Fruiting Offshoots (UFO), Super Slender Axe (SSA) or Kym Green Bush (KGB) training systems. Vegetative growth of the tree, determined by measuring trunk cross-sectional area (TCSA), canopy volume and leaf area, differed significantly, depending on the cultivar x rootstock x training system combination. In general, 'Krymsk 5' rootstock resulted in trees with significantly thicker trunks (TCSA: 37.75 cm2) and increased leaf area (up to 86.97 cm2). Fruit weight and fruit quality parameters including Hunter a*, firmness, TSS and acidity were variable between rootstocks and training systems and often not significantly different between treatments. In some years however, significant differences were highly dependent on the training system and rootstock interactions. Higher concentrations of bioactive phytochemical concentrations for total monomeric anthocyanin and antioxidant concentrations were mostly associated with the UFO training system in conjunction with the 'Krymsk 5' rootstock suggesting that these are linked to increased tree vigour and increased leaf surface area.
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.
Phytochemical and Antimicrobial Characteristics of Raspberry Fruit Growing Naturally in Kelkit Valley, Turkey
(Springer, 2023) Aglar, Erdal; Sumbul, Ahmet; Karakaya, Orhan; Erturk, Omer; Ozturk, Burhan
The study was carried out to determine the pomological, phytochemical and antimicrobial properties of wild raspberry fruit (Rubus idaeus) naturally growing in the Kelkit Valley in Turkey. In the study, the wild raspberry fruit was comparatively smaller. In fruit, soluble solids content (SSC) was determined as 12.6%, titratable acidity as 1.36% and vitamin C concentration as 28.8 mg 100 g(-1). Total phenolics, total flavonoids, 1,1-diphenyl-2-picrylhydrazil (DPPH) and ferric ions (Fe+3) reducing antioxidant power assay (FRAP) activity values were 1775 mg kg(-1), 151 mg kg(-1), 2580 mu mol kg(-1) and 5187 mu mol kg(-1), respectively. In the study, the solution obtained from raspberries had an antimicrobial effect on bacteria. While it had an antimicrobial effect on Aspergillus niger fungus, it did not have any effect on Candida albicans fungus. The highest antimicrobial activity was achieved against Pseudomonas aeruginosa, while the lowest effect was against Enterococcus feacalis bacteria. It was revealed that the raspberry fruit investigated in the study can be used as material for breeding studies due to their rich bioactive compounds and antimicrobial content.
Rootstock and Training Effects on Growth and Fruit Quality of Young '0900 Ziraat' Sweet Cherry Trees
(Springer, 2024) Aglar, Erdal; Ozturk, Burhan; Saracoglu, Onur; Long, Lynn Edwards; Yildiz, Kenan; Gun, Sefa; Has, Sirin
The study was conducted to determine the performance of '0900 Ziraat' cultivar grafted on Krymsk 5, Gisela 6 and Piku 1 rootstocks, and the effects of the combinations of these rootstocks with four training systems on yield and quality of sweet cherry. The rootstocks and training systems had a significant effect on vegetative growth and fruit quality. Krymsk 5 x Vogel central leader produced the largest trees. There were no differences between the rootstocks in terms of fruit size; however, the largest fruit was obtained from trees trained to Vogel central leader (VCL) and super slender axe (SSA) as compared to Kym Green bush (KGB) and upright fruiting offshoots (UFO). The coloration on the fruit of the trees grafted on Piku 1 and Krymsk 5 rootstocks and trained to the SSA training system was better and the fruit firmness values were higher with the Gisela 6 x SSA combination. The highest soluble solids content (SSC) values were recorded with Piku 1 x SSA and Gisela 6 x SSA combinations. The bioactive compound content of the fruit varied depending on the rootstock and training system. The fruit of Piku 1 x VCL combination had higher total phenolic content. Antioxidant activity was higher in Krymsk 5 x UFO combination. The study revealed that fruit quality was better with SSA and VCL training systems.
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