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Drilling Reconfigurable Machine Tool Selection And Process Parameters Optimization As A Function Of Product Demand, Ana Vafadar, Kevin Hayward, Majid Tolouei-Rad

Research outputs 2014 to 2021

Special purpose machines (SPMs) are customized machine tools that perform specific machining operations in a variety of production contexts, including drilling-related operations. This research investigates the effect of optimal process parameters and SPM configuration on the machine tool selection problem versus product demand changes. A review of previous studies suggests that the application of optimization in the feasibility analysis stage of machine tool selection has received less attention by researchers. In this study, a simulated model using genetic algorithm is proposed to find the optimal process parameters and machine tool configuration. During the decision-making phase of machine tool selection, unit …

Development Of A Reference Database For Assessing Dietary Nitrate In Vegetables, Lauren Blekkenhorst, Richard Prince, Natalie Ward, Kevin Croft, Joshua Lewis, Amanda Devine, Sujata Shinde, Richard Woodman, Jonathan M. Hodgson, Catherine P. Bondonno

Research outputs 2014 to 2021

Scope: Nitrate from vegetables improves vascular health with short-term intake. Whether this translates into improved long-term health outcomes has yet to be investigated. To enable reliable analysis of nitrate intake from food records, there is a strong need for a comprehensive nitrate content of vegetables database.

Methods and results: A systematic literature search (1980–2016) was performed using Medline, Agricola and Commonwealth Agricultural Bureaux abstracts databases. The nitrate content of vegetables database contains 4237 records from 255 publications with data on 178 vegetables and 22 herbs and spices. The nitrate content of individual vegetables ranged from Chinese flat cabbage (median; range: …

Phenolic Compounds In Floral Infusions Of Various Sambucus Species And Their Interspecific Hybrids, Biljana Todorovic, Maja Mikulic Petkovsek, Franci Stampar, Anton Ivancic

Turkish Journal of Agriculture and Forestry

The main purpose of the present study was to evaluate the diversity and content of various phenolic compounds in floral infusions of 14 elderberry genotypes (3 species and 9 interspecific hybrids). Detailed phenolic analysis was performed using HPLC-MS. Hydroxycinnamic acids (HCAs) were the major phenolic group identified and 3-, 4-, and 5-caffeoylquinic acids were detected in infusions prepared from all analyzed species and interspecific hybrids. Several flavonols were identified in elderberry floral infusions: 8 isorhamnetin derivatives, 6 quercetin derivatives, 2 flavanones, and 6 kaempferol derivatives. The main flavonols detected in all samples were isorhamnetin-3-rutinoside, isorhamnetin dihexoside, quercetin-3-rutinoside, kaempferol-3-rutinoside, and kaempferol …

Evaluation Of The Genetic Diversity Of Pomegranate Accessions From Turkey Using New Microsatellite Markers, Oğuzhan Çalişkan, Safder Bayazit, Mert Öktem, Ali̇ Ergül

Turkish Journal of Agriculture and Forestry

Turkey has many valuable genetic resources for pomegranate; however, there have not been many studies on the identification and characterization of these important genetic resources. New microsatellite markers were used to characterize a set of 78 pomegranate accessions from Turkey. Using six SSR primers, a total of 41 alleles were characterized with an average of 4.6 alleles per locus and mean probability of identity (PI) value of 0.366. These data indicated a high level of polymorphism in pomegranate germplasm. Five synonymous groups could be detected among 30 accessions. This microsatellite-based key is a first step towards a database for marker-assisted …

Distribution Of Quercus Spp. And Pinus Nigra Mixed Standsin Semiarid Northern Central Anatolia, Gülzade Kahveci̇

Turkish Journal of Agriculture and Forestry

Central Anatolia has semiarid ecological conditions that limit tree growth. In addition, long-term human activity has resulted in degradation of existing forests lands. Current forest cover mainly includes oak, juniper, and pine species. In this study, the distribution and present state of Pinus nigra L. and Quercus spp. (Quercus cerris L. and Quercus pubescens L.) mixed stands, and the relationship between different environmental factors and abundance of oaks and pines were analyzed. The results indicate that interactions of environmental variables and human disturbance may have influenced the frequency and abundance of species in the region.

The First Forest Fire History Of The Burabai Region (Kazakhstan)From Tree Rings Of Pinus Sylvestris, Kuralay Mazarzhanova, Arailym Kopabayeva, Nesi̇be Köse, Ünal Akkemi̇k

Turkish Journal of Agriculture and Forestry

Forest fires are one of the most important events causing an abrupt decrease in tree-ring width. Although humans are the main cause of forest fires, extreme weather or climate change may promote the frequency and severity of fires. The purpose of this study is to reconstruct historical fires in the Burabai Region of Kazakhstan including their frequency and seasons. Five tree cross-sections with fire scars were collected from two different sites, Akylbai and Burabai. After sanding the transversal surfaces of the cross-sections, the year and season of fire scars were determined. We identified 15 fires during the last 300 years …

Physiological And Growth Responses To Experimental Warmingin First-Year Seedlings Of Deciduous Tree Species, Jiae An, Saerom Han, Hanna Chang, Min Ji Park, Seongjun Kim, Jaehong Hwang, Min Seok Cho, Haegeun Chung, Yowhan Son

Turkish Journal of Agriculture and Forestry

Increasing temperature might affect physiological and growth traits of seedlings, which are particularly important for tree survival. This study was conducted to investigate the physiological and growth responses of first-year seedlings to open-field experimental warming during one growing season. Seedlings of three deciduous tree species (Fraxinus rhynchophylla Hance, Zelkova serrata (Thunb.) Makino, and Quercus variabilis Blume) were warmed with infrared heaters with a mean air temperature difference of 3.07 °C between the treatments. Physiological traits (net photosynthetic rate, transpiration rate, stomatal conductance, and total chlorophyll content) were measured in July, September, and October 2014, and growth traits (root collar diameter …

Comparison Of Two Halophyte Species (Salsola Soda And Portulaca Oleracea)For Salt Removal Potential Under Different Soil Salinity Conditions, Sema Karakaş, Mehmet Ali̇ Çullu, Murat Di̇ki̇li̇taş

Turkish Journal of Agriculture and Forestry

Salt-induced land degradation has gradually increased in several major irrigation schemes within arid and semiarid regions. To maximize crop productivity under saline conditions, either salt tolerance crops should be cultivated or areas should be desalinated. One of the most promising and cost-effective ways to maximize crop productivity is to use salt tolerant plants to remove salt from the soil. For this study, four levels of saline soils were cultivated with the halophyte species Salsola soda L. and Portulaca oleracea L. in pots. The soils had the following salinity levels: 1) nonsaline soil (NSS, 0.9 dS m-1), 2) slightly saline soil …

Bioinformatics Profiling And Characterization Of Potentialmicrornas And Their Targets In The Genus Coffea, Farzana Bibi, Muhammad Younas Khan Barozai, Muhammad Din

Turkish Journal of Agriculture and Forestry

MicroRNAs (miRNAs) are a class of noncoding small endogenous RNAs with lengths of 18 to 26 nucleotides that have been shown to regulate gene expression at posttranscriptional levels by targeting mRNAs for degradation or by inhibiting protein translation. Although thousands of miRNAs have been identified in many species, limited miRNAs have been reported in the genus Coffea, a member of the family Rubiaceae that is endemic to tropical Asia and South Africa. The genus Coffea, whose seeds are known as coffee beans, is used to make coffee. In this study, we identified 51 potential genus Coffea miRNAs, belonging to 51 …

Efficacy Of Trichogramma Evanescens And Bacillus Thuringiensis Var. Kurstaki In Control Of Cydia Pomonella (L.) In Turkey, Sevcan Öztemi̇z, Ali̇ Küden, Serpi̇l Nas, Işilay Lavkor

Turkish Journal of Agriculture and Forestry

This study was conducted to evaluate the effectiveness of Trichogramma evanescens Westwood (Hymenoptera: Trichogrammatidae) release with as well as without Bacillus thuringiensis var. kurstaki (Berliner) in biological control of Cydia pomonella (L.) (Lepidoptera: Tortricidae) in the Galaxy Gala apple variety grafted onto M9 rootstock in 2016. Four treatments were analyzed: releasing T. evanescens alone (TE), applying B. thuringiensis var. kurstaki (BT) alone, applying both (TE + BT), and a control (C) without any application at all. The experiment design entailed randomized blocks with four replicates. In each generation of the egg stage, 100,000 parasitoids per hectare were released twice (1440 …

Polyphenols In Northern Hungarian Mentha Longifolia (L.) L. Treatedwith Ultrasonic Extraction For Potential Oenological Uses, Katalin Patonay, Marietta Korozs, Zoltan Muranyi, Erika Pénzesné Kónya

Turkish Journal of Agriculture and Forestry

The main objective of this study is to investigate three equalized batches of a wild Mentha longifolia (ML) population from northern Hungary for extractability by gentle ultrasonic extraction, antioxidant activity, and phenolic constituents. This is the first analytical investigation in a Hungarian population of this species. Antioxidant properties of ML extracts were evaluated with DPPH, photochemiluminescence-O2-. scavenging assay, FRAP, and total polyphenol measurements. HPLC-DAD determination was performed for the main phenolic constituents. The extracts are medium or strong antioxidants in DPPH and FRAP assays and show strong O2-? scavenging capacity. Rutin, quercetin, kaempferol, apigenin, naringenin, rosmarinic, vanillic, gallic, syringic, caffeic, …

Mineralogical And Micromorphological Characteristics Of Red Pineand Oak Root Zone Soils In Southern Turkey, Somayyeh Razzaghi, Nadia Vignozzi, Selim Kapur

Turkish Journal of Agriculture and Forestry

Plant species exert differential effects on soil mineralogical and micromorphological characteristics. The effect of red pine and oak tree roots on the mineralogical and micromorphological characteristics of rhizosphere soils in two sampling sites in the Göksu catchment was studied. The climate, topography, and bedrock conditions were kept consistent, whereas the plant factor was kept as the only variable in each site. Rhizosphere soils under the canopies of 100 years old and naturally occurring trees were compared via macromorphology, submicroscopy, mineralogy, and physical and chemical properties. The soils of red pine (RP1 and RP2 profiles) were determined to have higher porosity …

Qtls For Iron Concentration In Seeds Of The Cultivated Lentil (Lens Culinaris Medic.) Via Genotyping By Sequencing, Seçi̇l Aldemi̇r, Duygu Ateş, Hülya Yilmaz Temel, Bülent Yağmur, Ahmad Alsaleh, Abdullah Kahri̇man, Hakan Özkan, Albert Vandenberg, Muhammed Bahatti̇n Tanyolaç

Turkish Journal of Agriculture and Forestry

Lentil, Lens culinaris Medic., is an important cool season grain legume because of the high level of iron (Fe) in its seeds since Fe deficiency is widespread and causes anemia. Thus, identifying genes controlling Fe concentration in the seed was needed for mapping in the lentil genome. The objectives of this study were to (i) detect phenotypic variation in Fe concentration in the seeds of a recombinant inbred line (RIL) population, (ii) construct a high-density linkage map using genotyping by sequencing (GBS), and (iii) identify localization of the quantitative trait loci (QTLs) controlling genes for Fe concentration in lentil seeds. …

Pokeweed (Phytolacca Americana L.) Antiviral Protein Inhibits Zucchini Yellow Mosaic Virus Infection In A Dose-Dependent Manner In Squash Plants, Hi̇kmet Murat Si̇pahi̇oğlu, İlhan Kaya, Mustafa Usta, Murat Ünal, Di̇lek Özcan, Meryem Özer Di̇lmen, Abdullah Güller, Vicente Pallas

Turkish Journal of Agriculture and Forestry

Pokeweed antiviral protein (PAP) of Phytolacca americana L. (pokeweed) is a single-chain ribosome-inactivating protein (RIP) characterized by its ability to depurinate plant ribosomes. Here, we isolated, cloned, and expressed the ribosome inactivating protein (RIP) gene, designated as pokeweed antiviral protein type 1 (PAP I), from the summer leaves of pokeweed collected from the Black Sea region (Turkey). Our findings presented here provide direct evidence that exogenous application of PAP I causes concentration-dependent inhibition of Zucchini yellow mosaic virus (ZYMV) infection on squash plants. Squash plants were exposed to PAP I protein with and without DMSO for four consecutive days. Regular …

Selected Engineering Properties Of Tiger Nut As A Function Of Moisture Content And Variety, Ahmet İnce, Kubi̇lay Kazim Vursavuş, Yasemi̇n Vurarak, Pinar Çubukcu, Meli̇h Yavuz Çevi̇k

Turkish Journal of Agriculture and Forestry

Some physical and mechanical properties of two tiger nut varieties (Sarışeker and Balyumru) were determined at four moisture contents. Physical properties including length, width, thickness, geometric mean diameter, mass, 1000-tuber mass, bulk density, tuber density, surface area, terminal velocity, angle of repose, porosity, and friction coefficient were affected by moisture content at a 1% probability level, excluding sphericity. All parameters decreased with a decrease in moisture content except tuber density, porosity, and firmness. Variety only had a statistically significant effect on width, geometric mean diameter surface area, and terminal velocity at different probability levels. Force, deformation, firmness, energy absorbed, and …

Agronomic And Chemical Performance Of Selected Origanum Dubium Boiss.Clones For Industrial Use, Kenan Turgut, Yaşar Özyi̇ği̇t, Begüm Tütüncü, Esra Uçar Sözmen

Turkish Journal of Agriculture and Forestry

Origanum dubium Boiss. is an economically important wild oregano species that is intensely collected from the natural flora of Antalya, Turkey. This herb is used mainly to produce an essential oil due to its high yield and high carvacrol content. The aim of this study was to improve the biomass yield and essential oil and carvacrol content of O. dubium for industrial use. In preliminary studies, a basic population was established using seeds collected from wild plants and then trials of A and B clones were run. Dry biomass yield per A clone plant and essential oil content varied at …

Effect Of Wood Chip Size On Hemicellulose Extraction Andtechnological Properties Of Flakeboard, Nadi̇r Ayrilmiş, Jin Heon Kwon, Tae Hyung Han

Turkish Journal of Agriculture and Forestry

The effect of chip size on hemicellulose extraction of wood and technological properties of flakeboard were investigated. Three different sizes of wood chips were treated with hot water in a digester at 170 °C for 90 min. After hydrothermal treatment, the wood chips were washed with water and then dried in a dryer. Flakes were produced from control and treated chips using a flaker. Flakeboards were produced from the flakes using urea-formaldehyde resin. The results showed that chip size had a significant effect on the chemical properties of hydrothermally treated wood under pressure in hot water. As chip size was …

Afforestation Of Arid And Semiarid Ecosystems In Turkey, Servet Çalişkan, Meli̇h Boydak

Turkish Journal of Agriculture and Forestry

Sustainable management of arid and semiarid forests requires careful planning and implementation. Afforestation by planting and seeding is a fundamental tool for the establishment of new forests on barren landscapes and restoration of degraded forests in arid and semiarid ecosystems. In afforestation efforts, the consideration of site preparation, selection of species, seed source, and planting methods pose a number of ecological and economic challenges. Possessing one of the world's richest floras, Turkey suffered from heavy degradation during the last millennia. Some studies suggested that forests and steppes once covered 60%-70% and 10%-15% of the Anatolian landscape, respectively. Growing population, overgrazing, …

Effect Of Pollenizers On Production And Fruit Characteristics Of Date Palm(Phoenix Dactylifera L.) Cultivar Medjool In Mexico, Ricardo Salomon-Torres, Noe Ortiz-Uribe, Rafael Villa-Angulo, Carlos Villa-Angulo, Susana Norzagaray-Plasencia, Cristian Garcia-Verdugo

Turkish Journal of Agriculture and Forestry

Pollen from four date palm cultivars (Medjool, Zahidi, Khadrawy, and Deglet Noor) was selected to study the effect of pollenizers on Medjool female production and fruit characteristics. The study was conducted during the 2016 season in San Luis Rio Colorado, Mexico. Three bunches of each of the four selected female palms were pollinized by each source of pollen. Results were statistically analyzed using the ANOVA test. Set percentage and fruit characteristics showed a significant effect depending on the selected pollenizer. Bunches pollinized with the Zahidi cultivar had the highest fruit set percentage at 50.30%, while bunches pollinized with the Khadrawy …

Some Growth And Chlorophyll Fluorescence Parameters Of Black And Hybrid Poplar Clones Under Water Stress, Akkin Semerci̇, Nuran Çi̇çek, Fai̇k Alpteki̇n Karahan, Ercan Özyürek, Yeli̇z Kaşko Arici, Yasemi̇n Ekmekçi̇

Turkish Journal of Agriculture and Forestry

The effects of water stress on some growth and chlorophyll a fluorescence parameters were investigated in two native black poplar (Populus nigra L.) clones (Kocabey and Gazi) and in two hybrid poplar (Populus × euramericana (Dode) Guinier) clones (I-214 and I-45/51) to determine which among the four clones is the best adapted to water-stress conditions. The potted seedlings were grown under three watering regimes. As a result of the applied watering regimes, the predawn water potential (ψ pd) of seedlings was maintained at about -0.3, -0.9, and -1.6 MPa in control, moderate, and severe water-stress treatments during the experiment, respectively. …

Influence Of Vermicompost Application On Soil Consistency Limits And Soil Compactibility, Serdar Sari, Ekrem Lütfi̇ Aksakal, İlker Angin

Turkish Journal of Agriculture and Forestry

Soil organic matter (SOM) is a composite indicator of soil quality. Recycling of organic wastes is one of the environmentally compatible and economically viable options to increase and/or maintain SOM content. Our study was conducted to evaluate the effects of vermicompost (0%, 0.5%, 1%, 2%, and 4% w/w) on the consistency limits and the Proctor compaction test parameters of three texturally different soils (sandy loam, loam, and clay) from similar climatic conditions and cropping management practices. Results showed that vermicompost increased the optimum moisture content (OMC) with an associated decrease in maximum dry soil bulk density (MBD). The increase in …

Inoculation With Bacillus Licheniformis Mh48 To Improve Camellia Japonicaseedling Development In Coastal Lands, Hyun-Gyu Park, Min-Hae Jeong, Young-Sang Ahn

Turkish Journal of Agriculture and Forestry

This study aimed to determine the promotion of the growth and nutrient uptake of Camellia japonica seedlings in coastal lands by bacterial inoculation. Soil salinity reduces plant growth and development in coastal areas due to the osmotic stress that perturbs nutrient uptake. The soil electrical conductivity at the sites of this study ranged from 1.02 to 1.89 dS m-1. Application of chemical fertilizer resulted in the limited uptake of nutrients in seedlings under saline conditions as well as a low nutrient content in the soil caused by leaching, with no significant influence on the growth of the seedlings. However, Bacillus …

Diversity And Genetic Analysis Through Dartseq In Common Bean(Phaseolus Vulgaris L.) Germplasm From Turkey, Seda Nemli̇, Tansel Kaygisiz Aşçioğul, Duygu Ateş, Dursun Eşi̇yok, Muhammed Bahatti̇n Tanyolaç

Turkish Journal of Agriculture and Forestry

The common bean (Phaseolus vulgaris L.) is the most consumed food legume in the world and is a major source of dietary protein, carbohydrates, and valuable micronutrients, especially in developing countries. Diversity Arrays Technology (DArTseq), based on genome reduction with restriction enzymes, provides a rapid, high-throughput, and cost-effective tool capable of generating thousands of genotyped single nucleotide polymorphisms (SNPs) for a genome-wide analysis of genetic diversity. In this study, we aimed to characterize common bean accessions using SNPs detected by a DArTseq approach. A total of 43,018 SNPs were identified from 173 common bean accessions, including Andean and Mesoamerican genotypes. …

Physiological Characterization Of Turkish Bread Wheat Genotypes For Resistance To Late Drought Stress, Ali̇ Öztürk, Murat Aydin

Turkish Journal of Agriculture and Forestry

A number of physiological traits have been proposed as selection criteria for late drought resistance and grain yield improvement in wheat. To characterize them in terms of late drought resistance, 64 bread wheat genotypes were evaluated for canopy temperature difference (CTD), leaf senescence rate (LSR), SPAD chlorophyll value, initial fluorescence (Fo), maximum fluorescence (Fm), variable fluorescence (Fv), maximum quantum efficiency of PSII (Fv/Fm), leaf ash content, and grain ash content in two field experiments conducted in irrigated and late drought conditions during the 2011-12 and 2012-13 seasons in Erzurum, Turkey. The experiments were conducted in an 8 x 8 lattice …

Liming And Application Of Nitrogen, Phosphorus, Potassium,And Boron On A Young Plantation Of Chestnut, Margarida Arrobas, Sandra Afonso, Isabel Q. Ferreira, José Moutinho-Pereira, Carlos M. Correia, M. Ângelo Rodrigues

Turkish Journal of Agriculture and Forestry

European chestnut is the most important cash crop in the highlands of NE Portugal. However, limited data on cropping technique are available to help farmers make decisions. This work is motivated by the lack of data related to chestnut response to fertilizer application. It reports results from a field fertilization trial consisting of the application of a combination of lime (L), nitrogen (N), phosphorus (P), potassium (K), and boron (B), namely LNPKB, NPKB, -NPKB, N-PKB, NP-KB, and NPK-B. Seedlings of chestnut were planted in June 2013 and grown for four growing seasons. Plant height, trunk diameter, and pruning wood were …

Chemical Composition And Morphometric Traits And Yield Ofcarrots Grown In Organic And Integrated Farming Systems, Natasa Sink, Maja Mikulic Petkovsek, Robert Veberic, Nina Kacjan Marsic

Turkish Journal of Agriculture and Forestry

Changes in chemical composition and quality traits of carrot roots (Daucus carota L.) grown in organic (ORG) and integrated (INT) farming systems were investigated during two successive years. Three carrot cultivars (Fanal, Rodelika, and Rolanka) were included. Determinations of sugars, organic acids, α- and ß-carotene, and vitamin C were performed with an HPLC system, and a liquid chromatography-mass spectrometry (LC-MS) system was used for the identification and quantification of phenolics. A higher yield of carrot in the ORG system was observed (42-44 t ha-1) as compared with the INT system (37-40 t ha-1). The impact of farming system on morphometric …

Effects Of Mepiquat Chloride Applications On Non-Oilseed Sunflower, Taşkin Polat, Hakan Özer, Erdoğan Öztürk, Firat Sefaoğlu

Turkish Journal of Agriculture and Forestry

Non-oilseed sunflower plants can be exposed to lodging in some production regions due to higher plant height and larger heads, which is further exacerbated by heavily rainfall and strong winds. In this context, plant growth regulators such as mepiquat chloride (MC) can be considered as an alternative approach in reducing plant height and lodging. This study was conducted to determine the effect of MC application on the growth, yield, and yield components of non-oilseed sunflowers at different growth stages (V4, R1, R2, and R3) and rates (0, 30, 60, and 90 g a.i. ha-1) in Erzurum Province, eastern Anatolia, Turkey, …

Use Of Snp Markers By Kasp Assay For Mas Studies In Sunflower Againstplasmopara Halstedii, Kevser Kösoğlu, Sevcan Yumuk, Yildiz Aydin, Göksel Evci̇, Ahu Altinkut Uncuoğlu

Turkish Journal of Agriculture and Forestry

Downy mildew is a fungal disease caused by Plasmopara halstedii and leads to loss of yield up to 100% in sunflower. Disease control is performed mostly through chemical seed treatment and breeding. Due to the time consuming nature of conventional breeding, it is supported by biotechnological approaches. Marker-assisted selection (MAS) is a strategic approach in molecular breeding using molecular markers. Single nucleotide polymorphisms (SNPs) such as insertions, deletions, and base-pair substitutions are more advantageous than other molecular markers. The abundance and biallelic nature of SNPs in a genome provide flexibility in the choosing of SNPs at the desired loci. Competitive …

Variations In Response Of Determinate Common Bean (Phaseolus Vulgaris L.)Genotypes To Arbuscular Mycorrhizal Fungi (Amf) Inoculation, Çeknas Erdi̇nç, Emre Demi̇rer Durak, Ayteki̇n Eki̇nci̇alp, Suat Şensoy, Semra Demi̇r

Turkish Journal of Agriculture and Forestry

This study evaluated seedling traits (shoot/root length, fresh and dry weights of shoots/roots, number of leaves, shoot diameter), phosphorus (P) content, mycorrhizal colonization (MC), and relative mycorrhizal dependency (RMD) of 21 common bean genotypes inoculated by 4 different arbuscular mycorrhizal fungi (AMF) [Glomus intraradices (Gi), Glomus mosseae (Gm), Gigaspora margarita (Gim), and commercial AMF (cAMF)] in a growth chamber under controlled growing conditions. With the exception of shoot diameter, inoculated plants had better seedling traits than noninoculated plants. P content of shoot was also higher in inoculated plants than in noninoculated plants. Of the 20 genotypes and Nadide cv. examined, …

Effects Of Partial Dehydration Techniques On The Metabolite Compositionin 'Refosk' Grape Berries And Wine, Maja Mikulic Petkovsek, Tjasa Jug, Jan Rescic, Denis Rusjan

Turkish Journal of Agriculture and Forestry

The aim of the study was to investigate the impact of the on-vine double maturation raisonnée (DMR) and off-vine berry partial dehydration in the chamber (PDC) on the chemical characteristics of the grape and wine grapevine cultivar 'Refosk'. A liquid chromatography-mass spectrometry (LC-MS) system was used for the identification and quantification of phenolics and the HPLC for sugars and organic acids. Berries subjected to DMR partial dehydration reached technological maturity (18.5 °Brix) within 14 days of cane cutting and those under PDC in 22 days upon harvest. The greatest decline in berry weight was recorded in the PDC treatment (14%), …