Yazar "Sakaldas, Mustafa" seçeneğine göre listele

Listeleniyor 1 - 6 / 6
  • [ X ]
    Öğe
    Alterations in quality characteristics and bioactive compounds of blackberry fruits subjected to postharvest salicylic acid treatment during cold storage
    (Wiley, 2024) Sakaldas, Mustafa; Sen, Fatih; Gundogdu, Muttalip; Aglar, Erdal
    Blackberry deteriorates rapidly after harvest due to its sensitive structure, limiting their storage time to about a week and resulting in significant economic losses. The study was conducted to determine the effects of salicylic acid applications on postharvest fruit quality in blackberries, the harvested fruit was immersed in salicylic acid solutions prepared at concentrations of 0.5, 1, and 1.5 mM for 15 min. Measurements and analyses such as weight loss, decay rate, soluble solids contents (SSC), pH, acidity, respiration rate, vitamin C, organic acids, and phenolic compounds were performed on fruits stored for 12 days with intervals of 4 days. Applying salicylic acid to fruits resulted in significantly less weight loss and decay rate. Salicylic acid application was effective in increasing SSC rate and decreasing titratable acidity with increasing storage time, and lower SSC and higher titratable acidity were measured with this application. Salicylic acid maintained organic acids and vitamin C postharvest. The decreases in individual phenolic compound levels occurred with extended storage time. Salicylic acid application generally was effective in maintaining concentrations of phenolic compounds during storage, and it was found to be effective on fruit quality, with effectiveness varying depending on application dosage. The study identified 1.5 mM as the most effective dosage of salicylic acid, which could be utilized to maintain postharvest quality and extend cold storage in blackberries. A study was conducted to assess the effects of salicylic acid on postharvest blackberry quality. Measurements such as weight loss, decay rate, soluble solids contents, pH, titratable acidity, respiration rate, vitamin C, organic acids, and phenolic compounds were taken over 12 days at 4-day intervals. Salicylic acid-treated fruits showed significantly less weight loss and decay. It also helped maintain organic acids, vitamin C, and phenolic compounds.image
  • [ X ]
    Öğe
    Biochemical and quality parameters changes of green sweet bell peppers as affected by different postharvest treatments
    (Academic Journals, 2010) Sakaldas, Mustafa; Kaynas, Kenan
    In this research, the effects of different postharvest treatments on quality and biochemical properties of Maxibell F1 California Wonder type peppers at green mature stage were determined. In this content, ultraviolet C (UV-C) at 254 nm treatments for 2.5, 5, 10 min and hot water dipping (HWD) treatments for 2 min at 40, 50, 60 degrees C were done respectively. Besides, low density polyethylene (LDPE) and polyvinylchloride (PVC) based modified atmosphere packaging (MAP) applications were materialized. Some quality and biochemical parameters such as flexibility, soluble solids content, weight loss, decay incidence, ascorbic acid content, total chlorophyll content and membrane leakage were assessed after each storage period on peppers. Furthermore, the gas concentrations inside modified atmosphere packages were daily measured. Treated peppers were stored at 6 - 7 degrees C and 90 - 95% RH conditions for 15, 30 and 45 days with two days shelf life at 18 - 20 degrees C respectively. According to the results, storage period affected the quality and biochemical properties. Thus, quality and biochemical properties reduced with prolonged storage period. Furthermore LDPE based MAP, PVC based MAP and HWD at 40 degrees C were found successful in terms of keeping the parameters as mentioned, respectively. The differences between treatments became evident especially after 30 and 45 days storage.
  • [ X ]
    Öğe
    Effects of 22S, 23S-Homobrassinolide and Gibberellic Acid on Occurrence of Physiological Disorders and Fruit Quality of 'Summit' and 'Regina' Sweet Cherries
    (Springer, 2016) Engin, Hakan; Gokbayrak, Zeliha; Sakaldas, Mustafa
    Plant growth regulators play a vital role in fruit growth and development. However, effects of compounds belonging to the group of brassinosteroids have not been fully investigated in sweet cherries. One relatively new and one commonly applied growth regulator, 22S, 23S-Homobrassinolide and GA(3), respectively, were tested on 'Summit' and 'Regina' sweet cherries to determine the effects on fruit quality and physiological disorders. The substances were applied with a handgun sprayer at full bloom and at the beginning of fruit development (shuck split) for a 2-year period. GA(3) was applied at the concentrations of 25, 50, 100 mgL(-1) and 22S, 23S-Homobrassinolide at 0.05, 0.1, 0.5 mgL(-1). A combined application of 100 mgL(-1) GA(3) + 0.1 mgL(-1) 22S, 23S-Homobrassinolide was also applied. Effects of GA(3) and 22S, 23S-Homobrassinolide on fruit weight and size were evident for the concentrations applied and between the seasons for both of the cultivars. Combination of the both growth regulators and 100 mgL(-1) GA(3) alone produced longer fruits compared to the control trees in 'Regina'. The 22S, 23S-Homobrassinolide applications increased the firmness of the flesh slightly, but not to a great degree, compared to the GA(3) applications alone. The brightness of the red color was better with GA(3) applications in 'Summit' and 'Regina'. Brassinosteroid caused the fruits to have comparably dull red color. Total soluble solid contents of the cultivars were influenced by the substances and the year of the application. Stem resistance to separation from the fruit was under the influence of both treatments and seasons. In general, 22S, 23S-Homobrassinolide provided better stem resistance than the GA(3) applications. There were no effects of the substances on the development of physiological disorders.
  • [ X ]
    Öğe
    RESEARCH ON THE EFFECTS OF 1-METHYLCYCLOPROPENE AND MODIFIED ATMOSPHERE PACKAGES ON STORAGE OF NECTARINE FRUITS
    (Parlar Scientific Publications (P S P), 2022) Sakaldas, Mustafa
    The study aimed to determine the effects of 1-methylcyclopropene (1-MCP) and two modified atmosphere packages (MAP) on major quality parameters of 'Sunny' nectarine variety during storage. The experiment was designed to test the six following variables: a) Non-treated in MAP accepted as the control group b) 1-MCP treatment without MAP, c) MAP1 (Lifepack (R)) d) 1-MCP+MAP1, e) 1-MCP+MAP2 (RipeLock (TM), closed bag) and f) MAP2 with 1-MCP generator. In all treatments, fruits were stored for 56 days at 0 degrees C and 90% RH. Sampling was done at 14 days intervals, and samples were then kept at for 2 days as shelf life (20 degrees C and 70% RH). During storage, the weight loss significantly increased in applications without MAP, and fruits lost their marketable value due to water loss after 28 days of storage with 2 days shelf life. Combined treatments showed slight decreases in fruit flesh firmness during storage. 1-MCP+MAP treated samples reduced the ethylene production during shelf life after cold storage. The effects of MAP and 1-MCP on total soluble solids, titratable acidity, total phenolic content, and antioxidant activity parameters were insignificant. The results showed that MAP1 and 1-MCP+MAP treatments maintained quality of nectarine fruit and provided longer storage and shelf life.
  • [ X ]
    Öğe
    ROLE OF 22S, 23S-HOMOBRASSINOLIDE AND GA3 ON FRUIT QUALITY OF '0900 ZIRAAT' SWEET CHERRY AND PHYSIOLOGICAL DISORDERS
    (Wydawnictwo Akad Rolniczej W Lublinie, 2015) Engin, Hakan; Gokbayrak, Zeliha; Sakaldas, Mustafa; Duran, Fatmanur Uslu
    Acquiring high quality in sweet cherry production is of great importance. Plant growth regulators have been used to increase yield and quality in the production of sweet cherries. Brassinosteroids, a relatively new group of plant growth regulators, have been found with interesting results on plant growth and development. This research was carried out to evaluate the role of brassinosteroids and gibberellins in development of fruit quality and occurrence of physiological disorders in '0900 Ziraat' sweet cherry. Gibberellic acid (GA(3)) and 22S, 23S-homobrassinolide were applied with a sprayer at full bloom and at the beginning of fruit development for a 2-year period. GA(3) was applied in concentrations of 25, 50, and 100 mg l(-1) and 22S, 23S-homobrassinolide was applied in concentrations of 0.05, 0.1, and 0.5 mg l(-1). A combined application of 100 mg l(-1) GA3 + 0.1 mg l(-1) 22S, 23S-homobrassinolide was also applied. Plant growth regulator applications mainly caused an increase in fruit weight and flesh to seed ration, and a decrease in fruit length. The effect was mainly due to gibberellin. Both Total soluble solids and titratable acidity were affected by the hormones and the seasons. Neither growth regulators had an influence on occurrence of the physiological disorders. They were at a lesser level in the second seasons.
  • [ X ]
    Öğe
    The effects of modified atmosphere packaging and storage temperature on quality and biochemical properties of dill (Anethum graveolens) leaves
    (Wfl Publ, 2010) Sakaldas, Mustafa; Aslim, Arzu S.; Kuzucu, Canan O.; Kaynas, Kenan
    Fresh herbs have very short storage period after harvest. In this context we determined the effects of different modified atmosphere packaging applications for prolonging the shelf life of dill (Anethum graveolens L. cv. Asder) leaves. For this purpose, the performances of modified atmosphere packaging based on polyvinylchloride (PVC) and low density polyethylene (LDPE) was examined at different storage temperatures (0-1 degrees C and 45 degrees C) with 90-95% RH for 10,20 and 30 days with 1 day shelf life at 18-20 degrees C/50-55% RH, respectively. Some quality parameters, such as weight loss, color, visual quality (graded to scale) and soluble solids content (SSC), besides some biochemical parameters, such as vitamin C, total phenolics and total chlorophyll content, were evaluated on dill bunches. In addition, the atmosphere composition inside the packages was measured daily. Quality and biochemical parameters, such as color, visual quality, weight loss, vitamin C, total chlorophyll content and total phenolic compounds, were affected by modified atmosphere packaging (MAP) and storage temperature. Furthermore, there was a difference between applications, moreover the atmosphere composition inside the packages was found different. Modified atmosphere packaging based on low density polyethylene was fixed as the most successful application on dill leaves and pursued by modified atmosphere packaging based on polyvinylchloride (PVC). Moreover, 0-1 degrees C storage temperature was more effective as keeping the quality of the crop. The effects of MAP based on both PVC and LDPE reduced at 4-5 degrees C storage temperature. As a result, MAP based on LDPE at 0-1 degrees C storage temperature was confirmed as the best method for prolonging the shelf life of dill leaves with keeping the quality.