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Full-Text Articles in Forest Sciences
Effect Of Postharvest Spermidine Treatments On Quality And Biochemical Properties Of Nectarine Fruits, Erdal Orman
Effect Of Postharvest Spermidine Treatments On Quality And Biochemical Properties Of Nectarine Fruits, Erdal Orman
Turkish Journal of Agriculture and Forestry
In this study, the effect of spermidine (SP) treatments at different doses after harvest on the changes in the pomological and biochemical contents of nectarine fruits was determined. The fruits were placed in cold storage (4 ± 0.5 °C and 90 ± 5% RH) for 30 days. Specific organic acids and phenolic compounds from biochemical compounds were analyzed by HPLC device. Weight loss and decay values, which are quality criteria of nectarine fruits, increased during storage compared to the harvest period. In this study, 1.0 mM SP application was found to be more successful in the preservation of visual quality …
Effects Of 1-Methylcyclopropene (1-Mcp) Treatment On Antioxidant Enzymes And Fruit Quality Parameters Of Cold-Stored Baby Squash, Mehmet Seçki̇n Kurubaş, Jasmina Sabotic, Mustafa Erkan
Effects Of 1-Methylcyclopropene (1-Mcp) Treatment On Antioxidant Enzymes And Fruit Quality Parameters Of Cold-Stored Baby Squash, Mehmet Seçki̇n Kurubaş, Jasmina Sabotic, Mustafa Erkan
Turkish Journal of Agriculture and Forestry
In this study, the effects of 1-methylcyclopropene (1-MCP) treatment on the antioxidant enzymes and fruit quality parameters of baby squash (Cucurbita pepo L., cv. Soleil F1 and İskender F1) during cold storage was investigated. After being freshly harvested, the İskender F1 (green-skinned) and Soleil F1 (yellow-skinned) baby squash were treated with 250 and 500 ppb concentrations of 1-MCP and stored at 10 °C for 14 days. The 250 ppb 1-MCP treatment suppressed the loss of total soluble solid, ascorbic acid, total phenolic, and total flavonoid contents during storage in the Soleil F1 squash. Similarly, the 250 ppb 1-MCP treatment delayed …
Co2 Respiration Rates Of Einkorn Wheat At Different Temperature And Moisture Contents, Hakan Ki̇bar
Co2 Respiration Rates Of Einkorn Wheat At Different Temperature And Moisture Contents, Hakan Ki̇bar
Turkish Journal of Agriculture and Forestry
Temperature and grain moisture content are the main factors affecting grain spoilage in storage. These factors have a significant impact on the maintenance of quality, insect, fungus, and pest development. The main objective of this study was to determine the CO2 concentration and respiration rate of hulled einkorn wheat in different temperatures (5, 10, 15, 20, 25, 30, and 35 °C) and grain moisture contents (9.1%, 11.5%, 13.8%, and 15.9%, wet basis) by means of CO2 sensors. Multiple polynomial regression equation was developed to predict respiration as affected by temperature and grain moisture content. The CO2 concentrations and respiration rates …
Effects Of Modified Atmosphere Packaging On The Storage And Shelf Life Of Hicaznarpomegranate Fruits, Eli̇f Çandir, Ahmet Erhan Özdemi̇r, Mehmet Can Aksoy
Effects Of Modified Atmosphere Packaging On The Storage And Shelf Life Of Hicaznarpomegranate Fruits, Eli̇f Çandir, Ahmet Erhan Özdemi̇r, Mehmet Can Aksoy
Turkish Journal of Agriculture and Forestry
This study compared the postharvest quality of Hicaznar pomegranate fruit unpackaged and packaged with 5-kg or 12-kg bags of two different modified atmosphere packaging (MAP) materials (X5, X12, L5, and L12) during 6 months of storage at 6 °C. The fruits were also evaluated during a simulated shelf life period at 20 °C for 7 days after each cold storage period. The MAP bags significantly reduced the loss of titratable acidity and ascorbic acid content and retarded husk discoloration of the fruit during cold storage and the shelf life period. The incidence of fungal decay was lower in fruit packaged …
Effects Of Rootstocks On Storage Performance Of Nova Mandarins, Ahmet Erhan Özdemi̇r, Öznur Di̇di̇n, Eli̇f Çandir, Mustafa Kaplankiran, Ercan Yildiz
Effects Of Rootstocks On Storage Performance Of Nova Mandarins, Ahmet Erhan Özdemi̇r, Öznur Di̇di̇n, Eli̇f Çandir, Mustafa Kaplankiran, Ercan Yildiz
Turkish Journal of Agriculture and Forestry
In this research, the effects of rootstocks on the storage performance of Nova mandarins grafted on Carrizo citrange, Troyer citrange, or sour orange grown in the ecological conditions of Dörtyol were studied. Fruits were harvested at optimum maturity and kept at 4 °C and 6 °C for 120 days. Changes in weight loss, incidence of fungal decay and physiological disorders, juice content, total soluble solids (TSS), percent fruit with green button, titratable acidity (TA), juice pH, vitamin C content, and rind color (L*, C*, h°) were monitored at 15-day intervals during storage to determine the effects of rootstock on postharvest …
Effects Of Hot Water And Uv-C On Mineral Content Changes In Two Strawberry Cultivarsstored At Different Temperatures, Şeyda Çavuşoğlu
Effects Of Hot Water And Uv-C On Mineral Content Changes In Two Strawberry Cultivarsstored At Different Temperatures, Şeyda Çavuşoğlu
Turkish Journal of Agriculture and Forestry
In this study, two standard strawberry cultivars, Rubygem and Sabrina, were treated with UV-C (254 nm), hot water (60° C for 10 s), and UV-C + hot water after harvesting and stored in modified atmosphere packaging (MAP) at 0 °C and 5 °C. The variations in mineral contents including phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu), manganese (Mn), sodium (Na), and zinc (Zn) were analyzed during storage periods. Analysis of variance for storage temperature, storage time, cultivar, and treatments showed that storing both cultivars at different temperatures followed by all treatments caused some increases in P and …
Impacts Of 1-Methylcyclopropene (1-Mcp) On Postharvest Quality Of 'Ankara' Pears During Long-Term Storage, Mehmet Seçki̇n Kurubaş, Mustafa Erkan
Impacts Of 1-Methylcyclopropene (1-Mcp) On Postharvest Quality Of 'Ankara' Pears During Long-Term Storage, Mehmet Seçki̇n Kurubaş, Mustafa Erkan
Turkish Journal of Agriculture and Forestry
The effects of various concentrations of 1-methylcyclopropene (1-MCP) on `Ankara? pears (Pyrus communis L.) were investigated. The pears were harvested at commercial maturity level and 1-MCP (250 and 500 ppb) was applied to the fruit for 24 h at 5 °C. After 1-MCP treatments, the pears were kept at 0 °C temperature with 90%-92% relative humidity (RH) for 8 months. Fruit samples were taken at 2-month intervals from the storage room and various physical and chemical analyses, including soluble solids content, weight loss, flesh firmness, titratable acidity, skin color, respiration rate, ethylene emission, and fruit taste were carried out on …
Impact Of Passive Modified Atmosphere Packaging On Physicochemical Properties, Bioactive Compounds, And Quality Attributes Of Sweet Pomegranates, Nurten Selçuk, Mustafa Erkan
Impact Of Passive Modified Atmosphere Packaging On Physicochemical Properties, Bioactive Compounds, And Quality Attributes Of Sweet Pomegranates, Nurten Selçuk, Mustafa Erkan
Turkish Journal of Agriculture and Forestry
The effects of two different types of modified atmosphere packaging (MAP) on the physicochemical properties, biochemical composition, and storage quality of sweet pomegranate variety Beynarı were investigated during long-term storage. Pomegranates were harvested at the commercial harvest stage and packed in two different commercial types of MAP (MAP1, sealed in packages made of Xtend® film; MAP2, sealed in bags made of ZOEPAC). Unpacked fruits stored in plastic boxes were used as the control. Following packaging treatments, all packed and unpacked fruit samples were stored at 6 ± 0.5 °C and 90 ± 5% relative humidity for 120 days, and they …
A Response Surface Methodology Study On The Effects Of Some Phenolics And Storage Period Length On Vegetable Oil Quality: Change In Oxidation Stability Parameters, Safa Karaman, Ömer Sai̇d Toker, İsmet Öztürk, Hasan Yalçin, Ahmed Kayacier, Mahmut Doğan, Osman Sağdiç
A Response Surface Methodology Study On The Effects Of Some Phenolics And Storage Period Length On Vegetable Oil Quality: Change In Oxidation Stability Parameters, Safa Karaman, Ömer Sai̇d Toker, İsmet Öztürk, Hasan Yalçin, Ahmed Kayacier, Mahmut Doğan, Osman Sağdiç
Turkish Journal of Agriculture and Forestry
In the present study, response surface methodology was conducted for the determination of effects of some phenolics (gallic acid, ellagic acid, and quercetin) on some stability parameters of mixed oil prepared with sunflower and hazelnut oils (50:50, v/v). In this respect, peroxide value (PV), free fatty acids (FFAs), p-anisidine value, induction period, and refractive index of mixed oil were investigated. Predictive regression equations were constructed for the estimation of each studied parameter (R^2 > 0.861). The storage period caused a significant increase in the peroxide value, FFAs, p-anisidine, and refractive index values of the mixed oil, while it decreased the induction …
Optimization Of Orius Majusculus Release: Photoperiodic Sensitivity At Different Temperatures And Storage Of Diapausing Adults, Şeri̇fe Ünal Bahşi̇, İrfan Tunç
Optimization Of Orius Majusculus Release: Photoperiodic Sensitivity At Different Temperatures And Storage Of Diapausing Adults, Şeri̇fe Ünal Bahşi̇, İrfan Tunç
Turkish Journal of Agriculture and Forestry
The photoperiodic sensitivity and storage of Orius majusculus (Reuter) from Antalya was investigated to obtain data for the optimization of its release. In the current study, it was not possible to induce a high (up to 100%) incidence of diapause unless all the nymphal instars and adults were successively exposed (i.e. full exposure) to a short day length (11.5 h) at constant temperatures of 18 and 26 °C, and fluctuating temperatures of 10/26 °C. Hence an intermittent exposure to long day lengths, even for short periods of time (only during instars IVV or adult stage), would avoid a high incidence …
Phenolic Composition And Antioxidant Activity Of Salvia Tomentosa Miller: Effects Of Cultivation, Harvesting Year, And Storage, Cüneyt Di̇nçer, İsmai̇l Tontul, İhsan Burak Çam, Kübra Sultan Özdemi̇r, Ayhan Topuz, Hi̇lal Şahi̇n Nadeem, Saadet Tuğrul Ay, Ramazan Süleyman Göktürk
Phenolic Composition And Antioxidant Activity Of Salvia Tomentosa Miller: Effects Of Cultivation, Harvesting Year, And Storage, Cüneyt Di̇nçer, İsmai̇l Tontul, İhsan Burak Çam, Kübra Sultan Özdemi̇r, Ayhan Topuz, Hi̇lal Şahi̇n Nadeem, Saadet Tuğrul Ay, Ramazan Süleyman Göktürk
Turkish Journal of Agriculture and Forestry
Salvia tomentosa is a common medicinal plant, and it is consumed as an herbal tea in some Mediterranean countries. It has been extensively collected from its natural habitat, and careless collection has caused the recent extinction of some plants. The present study was undertaken to cultivate S. tomentosa and compare the phenolic composition and antioxidant properties of wild and cultivated plants. Total phenolics, total flavonoids, and antioxidant activity of S. tomentosa ranged between 49.27 and 66.15 mg GAE g^{-1} dry weight (dw), 36.27 and 40.83 mg catechin g^{-1} dw, and 1.77 and 2.29 mg dw mg^{-1} DPPH, respectively. Total phenolic …
Chitosan Coating Improves The Shelf Life And Postharvest Quality Of Table Grape (Vitis Vinifera) Cultivar Shahroudi, Mohammad Ali Shiri, Davood Bakhshi, Mahmood Ghasemnezhad, Monad Dadi, Alexandros Papachatzis, Helen Kalorizou
Chitosan Coating Improves The Shelf Life And Postharvest Quality Of Table Grape (Vitis Vinifera) Cultivar Shahroudi, Mohammad Ali Shiri, Davood Bakhshi, Mahmood Ghasemnezhad, Monad Dadi, Alexandros Papachatzis, Helen Kalorizou
Turkish Journal of Agriculture and Forestry
Table grapes (Vitis vinifera) of the cultivar Shahroudi were coated with 0.5% or 1% chitosan and then stored at 0 °C for 60 days. Shelf-life qualitative traits including rachis and berry appearance and berry cracking, shattering, decay, browning, acceptability, and flavor were evaluated. Treated berries showed less weight loss, decay, browning, shattering, and cracking. Flavor-related factors such as total soluble solids (TSS), titratable acidity (TA), and TSS/TA ratio levels were higher in treated fruits; however, there was no significant difference between the fruits treated with 0.5% and 1% chitosan. Changes of the total phenolics, catechin, and antioxidant capacity of the …
Combined Treatment Of Modified Atmosphere Packaging And 1-Methylcyclopropene Improves Postharvest Quality Of Japanese Plums, Mustafa Erkan, Hakan Eski̇
Combined Treatment Of Modified Atmosphere Packaging And 1-Methylcyclopropene Improves Postharvest Quality Of Japanese Plums, Mustafa Erkan, Hakan Eski̇
Turkish Journal of Agriculture and Forestry
Two Japanese-type plum (Prunus salicina Lindell) cultivars, 'Autumn Giant' and 'Black Beauty', were harvested at commercial maturity stage and either packed in nonperforated modified atmosphere packaging (MAP) or treated with a 500 ppb dose of 1-methylcyclopropene (1-MCP) alone or given a combination of 1-MCP and MAP. After these treatments, the plum samples were stored at 0 °C for 60 days. Treatment with either 1-MCP or modified atmosphere packaging (MAP) alone or with the 1-MCP+MAP combination reduced fruit softening, ethylene production, respiration rate, weight loss, and flesh browning, and resulted in higher flesh firmness, titratable acidity, and total soluble solids as …
Changes In Some Quality Parameters Of The Perfect Delight Nectarine Cultivar During Cold Storage And Shelf Life, Murat Çeli̇k, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk
Changes In Some Quality Parameters Of The Perfect Delight Nectarine Cultivar During Cold Storage And Shelf Life, Murat Çeli̇k, Ahmet Erhan Özdemi̇r, Eli̇f Ertürk
Turkish Journal of Agriculture and Forestry
The objective of this study was to determine storage and shelf life periods of Perfect Delight nectarines grown in Mersin (Yenice, Tarsus). The fruit was kept at 0 °C and 85%-90% relative humidity for 8 weeks. After removal from cold storage at weekly intervals, the fruit was kept at 20 °C and 65%-70% relative humidity for 2, 4 or 6 days to determine shelf life in 3 replicates. Changes in weight loss (%), fruit skin color and flesh color (L*, a*, b*), fruit flesh firmness (N), total soluble solids (%), titratable acidity (g malic acid / 100 ml fruit juice), …
Harvest Date Influences Superficial Scald Development In Granny Smith Apples During Long Term Storage, Mustafa Erkan, Mustafa Pekmezci̇
Harvest Date Influences Superficial Scald Development In Granny Smith Apples During Long Term Storage, Mustafa Erkan, Mustafa Pekmezci̇
Turkish Journal of Agriculture and Forestry
The effects of harvest dates on superficial scald development and postharvest quality in 'Granny Smith' apples (Malus domestica Borkh.) were investigated. Apples were harvested at 15-day intervals during 2 consecutive years (2000-2001) and stored at 0 °C with 90% relative humidity for 8 months. At the end of the 8 - month storage period plus an additional 1 week at 20 °C the percentage of superficial scald was lower (24.4%) in late harvested (November 15) apples than in apples harvested early (October 15), which was 85.4%. The apples harvested late reached a climacteric maximum quicker than those harvested early. The …
Kinetics Of Nonenzymatic Browning Reaction In Citrus Juice Concentrates During Storage, Nuray Koca, Hande Selen Burdurlu, Feryal Karadeni̇z
Kinetics Of Nonenzymatic Browning Reaction In Citrus Juice Concentrates During Storage, Nuray Koca, Hande Selen Burdurlu, Feryal Karadeni̇z
Turkish Journal of Agriculture and Forestry
The kinetics of nonenzymatic browning in citrus juice concentrates (orange, lemon, grapefruit and tangerine) during 8 weeks of storage at 28, 37 and 45 ºC were investigated. Browning development was followed by measuring absorbance at 420 nm (A_{420}) and using CIE-Lab color system. Analysis of kinetic data from A_{420} values suggested a zero-order reaction for nonenzymatic browning, while changes in L* and b* parameters followed a first-order reaction. Activation energy for nonenzymatic browning determined by A_{420} values ranged from 17.60 to 35.27 kcal mol^{-1}, while those for L* and b* parameters were 6.67-28.99 kcal mol^{-1} and 15.38-34.2 kcal mol^{-1}, respectively. …
Composition Of Honeys Collected From Eastern And South-Eastern Anatolia And Effect Of Storage On Hydroxymethylfurfural Content And Diastase Activity, Hayrullah Yilmaz, Ömer İrfan Küfrevi̇oğlu
Composition Of Honeys Collected From Eastern And South-Eastern Anatolia And Effect Of Storage On Hydroxymethylfurfural Content And Diastase Activity, Hayrullah Yilmaz, Ömer İrfan Küfrevi̇oğlu
Turkish Journal of Agriculture and Forestry
The chemical composition of honeys produced in Eastern and South-Eastern Anatolia (Turkey) was studied. For this aim, the composition of 45 honey samples collected from the mentioned regions and the effect of one year storage (20 ± 5ºC) on the diastase activity and hydroxymethylfurfural (HMF) content were determined. Compositional data measured in the fresh honeys were HMF, diastase number, moisture, invert sugar, sucrose, ash, proline, pH, free acid and lactone. Average values were as follows: HMF 3.3 mg kg^{-1}, diastase number 14.6, moisture 16.0%, invert sugar 70.3%, sucrose 1.8%, ash 0.1%, proline 53.0 mg/100g; pH 3.8, free acid 22.3 meq …