Volkan Okatan

ORCID: 0000-0001-5787-7573
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About
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Research Areas
  • Plant Physiology and Cultivation Studies
  • Berry genetics and cultivation research
  • Postharvest Quality and Shelf Life Management
  • Phytochemicals and Antioxidant Activities
  • Horticultural and Viticultural Research
  • Growth and nutrition in plants
  • Botanical Research and Applications
  • Plant Stress Responses and Tolerance
  • Pomegranate: compositions and health benefits
  • Plant biochemistry and biosynthesis
  • Plant Reproductive Biology
  • Banana Cultivation and Research
  • Essential Oils and Antimicrobial Activity
  • Plant Pathogens and Fungal Diseases
  • Nuts composition and effects
  • Antioxidant Activity and Oxidative Stress
  • Bee Products Chemical Analysis
  • Plant Disease Management Techniques
  • Aluminum toxicity and tolerance in plants and animals
  • Edible Oils Quality and Analysis
  • Phytochemistry and Biological Activities
  • Polysaccharides and Plant Cell Walls
  • Silicon Effects in Agriculture
  • Animal Nutrition and Physiology
  • Plant Genetic and Mutation Studies

Eskişehir Osmangazi University
2021-2024

Usak University
2018-2021

European University of Lefke
2021

Jiangxi Agricultural University
2021

İstanbul Sisli Meslek Yüksekokulu
2018-2019

Akdeniz University
2018

University of Cyprus
2018

Tokat Gaziosmanpaşa Üniversitesi
2015

Abstract Berries are in the form of a semi-bush or shrub, soft fleshy, juicy, often small and edible. They generally bright colours may sweet sour taste. The present study reports comparison antioxidant properties phenolic profile most consumed berry species, namely redcurrant ( Ribes rubrum L.), blackcurrant nigrum red raspberry Rubus idaeus blackberry fruticosus gooseberry uva-crispa L.) jostaberry nidigrolaria Rud. Bauer & A. Bauer). Results suggested that highest activity (426.26 mg...

10.2478/fhort-2020-0008 article EN cc-by-nc-nd Folia Horticulturae 2020-04-22

Abstract Turkey is one of the most important centres mulberry genetic resources and mulberries grow naturally almost everywhere in Turkey. This study was carried out to determine phenolic compounds phytochemical properties ( Morus nigra L.) genotypes collected from natural 2016-2017 province Uşak (Turkey). The investigated biochemical characteristics included: total soluble solids content (TSS), pH, titratable acidity, content, vitamin C antioxidant capacity (DPPH). highest values compounds,...

10.2478/fhort-2018-0010 article EN cc-by-nc-nd Folia Horticulturae 2018-04-25

Propolis, also called “bee-glue,” is a natural resinous substance produced by honeybees from plant exudates, beeswax, and bee secretions in order to defend the hives. It has numerous phenolic compounds with more than 250 identified chemical its composition, which are known significantly vary according sources season. Moreover, it long history traditional scientific medicine as having antibacterial, anticancer, anti-inflammatory, anti-infective, wound healing effects since 300 BC. In addition...

10.1155/2020/8869624 article EN cc-by Journal of Food Quality 2020-07-29

Abstract Prevention of postharvest losses has been a very important concern in the scientific world for many centuries, since adoption an effective means to curtail such is believed help reaching sustainability horticultural production and prevention hunger around world. The main deterioration fruits, which may occur after harvest, include physiological changes/losses, physical losses, biochemical changes, changes enzymatic activities pathological deterioration. Among these, diseases cover...

10.2478/fhort-2021-0016 article EN cc-by-nc-nd Folia Horticulturae 2021-06-01

Abstract Background Drought is a major abiotic stress that restricts plant growth and efficiency although some nutrients such as silicon improve drought tolerance by regulating the biosynthesis accumulating osmolytes. In this regard, completely randomized factorial design was performed with three factors including two genotypes (‘Maragheh’ ‘Kashan’), concentrations of dioxide nanoparticles (SiO 2 -NPs) (0, 50, 100 mg L − 1 ), five PEG 25, 75, g ) replications. Results The findings showed...

10.1186/s12870-022-03915-z article EN cc-by BMC Plant Biology 2022-11-18

Goji berry is a lesser-known fruit species and its berries have been used in traditional medicine for centuries as remedies to treat eye, liver, kidney ailments, well the prevention of cancer symptoms due high phytochemical content. This study aimed investigate changes pomological, biochemical, properties 4 goji genotypes harvested during months (June, July, August, September) same year. The results indicated that highest dimensions (height width) soluble solid content were obtained from...

10.3906/tar-1808-17 article EN TURKISH JOURNAL OF AGRICULTURE AND FORESTRY 2019-06-11

Abstract Progression of the vegetation period and change year are associated with variations in general climatic parameters, such as temperature, atmospheric pressure, humidity, radiation, precipitation, wind speed others. Only limited knowledge is available about effects these parameters on characteristics quality fruits especially those successive ripening goji berry. In our study, berry were characterised based physico-chemical properties within four different harvest periods, two...

10.2478/fhort-2020-0021 article EN cc-by-nc-nd Folia Horticulturae 2020-10-03

This study was performed to determine the antifungal activity of loquat (Eriobotrya japonica Lindl) leaf extract (LLE) against citrus postharvest pathogen Penicillium digitatum (P. digitatum). The LLE exhibited an P. digitatum, with a minimum inhibitory concentration (MIC) 0.625 mg/ml and fungicidal (MFC) 1.25 mg/ml. Significant effects on mycelial growth spore germination were seen in dose-dependent manner. Simultaneously, investigate possible mechanisms by LLE, we analyzed their influence...

10.3389/fnut.2021.663584 article EN cc-by Frontiers in Nutrition 2021-08-20

ABSTRACT Strawberry fruit quality traits can be affected by genotype-environment interactions, which determine the consumer acceptance of fruits. This factorial experiment was based on completely randomised blocks (RCBD) with two planting dates (5 and 20 April) cultivars (‘Albion’, ‘San Andreas’ ‘Portola’) strawberry three replications, some pomological qualitative factors berry were investigated at harvest. The results showed no significant difference width, length, weight firmness, while...

10.2478/fhort-2023-0017 article EN cc-by-nc-nd Folia Horticulturae 2023-06-01

Melatonin acts as a seed germination activator, plant growth regulator, leaf senescence retardant, and, in general, has multifunctional role ‘defence molecule’; furthermore, by interacting with other molecules, such phytohormones and gaseous it greatly enhances adaptation to different environments. However, there are not enough studies about the use of melatonin on horticultural crops, even fewer have outlined differences related this phytohormone between protected environment open field....

10.3390/agriculture13010071 article EN cc-by Agriculture 2022-12-26

Foliar calcium (Ca) treatment exhibits strong potential for enhancing yield and quality in some fruit crops. This study aimed to assess the impact of foliar application Ca-organomineral (Ca-OM) suspension on total soluble solids (TSS) Ca dynamics leaves berries across five red currant cultivars during vegetation storage. A randomized block design with two treatments: (1) Control (without Ca-OM treatment) (2) treatment, three repetitions, was applied different cultivars. Although treatments...

10.1155/2024/1478849 article EN cc-by Journal of Food Quality 2024-04-12

In recent times, pomegranate has been one of Turkey's most important commercial fruit crops for consumption and export. this study, the chemical composition (Punica granatum L.) fruits grown in central area Bitlis province (Eastern Turkey) was investigated. For purpose, total phenolic content, ascorbic acid anthocyanin antioxidant activity minerals content were evaluated. The highest contents determined 13BIT1 (6477.78 mg gallic equivalents 100 g–1 fresh matter). 13BIT2 genotype (60.78 g–1)....

10.24326/asphc.2018.4.18 article EN cc-by Acta Scientiarum Polonorum Hortorum Cultus 2018-08-27

Abstract Background Cactus pear ( Opuntia ficus - indica (L.) Miller) is an important food source for human beings but its consumption and marketability are limited due to the presence of spines glochids on fruit surface. Fresh-cut, ready-to-eat cactus pears have higher preference than whole fruits. However, fresh-cut fruits tissue wounding quick deterioration, which decrease products. Therefore, present study was aimed improve storage quality with application environmentally friendly...

10.1186/s43170-020-00008-5 article EN cc-by CABI Agriculture and Bioscience 2020-07-09

Abstract Background Strawberries are one of the most widely cultivated fruits in world, and their popularity continues to grow due unique taste, high nutritional value, numerous health benefits. The success strawberry cultivation depends largely on quality growing media used. In recent years, there has been a interest soilless as sustainable alternative traditional soil-based methods. This study aimed compare effect different media, both soil (Hydroponic Production System) fruit...

10.1186/s12870-023-04409-2 article EN cc-by BMC Plant Biology 2023-08-23

In this study, total phenolic content, antioxidant capacity, anthocyanin content and ascorbic acid (in flesh+peel) of the 7 apple cultivars grown in Posof/Ardahan were measured. The three was higher than other cultivars. “Posofkırmızısı”, “Sarı şafran” “Paşa” had highest ccontents (239.22, 228.81 222.71 mg gallic equivalents/100 g offlesh+peels, respectively). Results showed that fresh levels for capacity (90.32 114.23 µmol vitamin C equivalents/g (30.07 to 71.49 mg/100g), whereas lower...

10.31015/jaefs.18022 article EN International Journal of Agriculture Environment and Food Sciences 2018-09-24

Abstract This research was designed to test the combined efficacy of hot water dipping (HWD) and leaf extracts Cistus creticus L. subsp. on storage quality fresh Valencia oranges. Experiments were laid down according a completely randomised design with 10 different treatments. Five replications, five fruits in each replication, used current study, continue for 150 days. Quality characteristics observed 30-days interval. The applications this study (1) Control [dipping at 25°C 5 min]; (2) HWD...

10.2478/fhort-2020-0029 article EN cc-by-nc-nd Folia Horticulturae 2020-11-24

The current research was carried out to test the effects of edible coatings (EC) enriched with laurel essential oil (EC+LEO) on storability strawberry 'Camarosa' fruits. Freshly harvested fruits were randomly separated into three groups and each group treated a different treatment, including EC, EC+LEO control. Fruits stored at 4.0 ± 1.0 °C relative humidity 90–95% for 15 days. Results suggested that both EC have positive quality parameters help improve storage duration After days storage,...

10.1590/1678-4499.20210221 article EN Bragantia 2022-01-01
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