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    BIOCHEMICAL AND BIOACTIVE CONTENT IN FRUITS OF WALNUT (JUGLANS REGIA L.) GENOTYPES FROM TURKEY
    (Parlar Scientific Publications (P S P), 2021) Erdogan, Ummugulsum; Argin, Sanem; Turan, Metin; Cakmakci, Ramazan; Olgun, Murat
    Walnuts (Juglans regia L.) are a good source of dietary minerals and contain significant amounts of potassium, phosphorus, magnesium and iron. In Turkey, walnut orchards are found in the coruh Valley and are generally composed of local varieties. Since chemical and physical properties of walnuts are very important in determining their quality, in this study, nut and kernel characteristics, fatty acid composition and phenolic composition were determined for 26 walnut genotypes collected from the valley. Total fat content was found to be between 53.75% and 71.43%, while the crude protein amount ranged from 10.21% to 20.71%. Total carbohydrates were calculated between 14.31-27.52% and ash content was found to be between 1.64% and 3.32%. The oleic acid content and linoleic acid content ranged from 18.34 to 25.58% and 37.09% to 87.51%, respectively. The linolenic acid content was determined between 5.52% and 11.03%. Our study showed that, differences in phenolic component, crude protein and fatty acid content of walnuts were caused by different growing conditions. Genotypes have a rich and stable structure in terms of fruit quality parameters, minerals, organic acids, phenolic composition, antioxidant and fatty acids amounts and amino acids. In other words, these characteristics did not show much variation in genotypes grown in the Valley. However, there was a great variation in hormone levels among genotypes. In terms of the parameters examined, GN2, GNI, ((NIS, GN24, GN25 and GN26 genotypes were determined as rich and stable genotypes.
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    Physico-chemical Properties, Mineral Matter, Organic Acid, Amino Acid, and Plant Hormones Content of Goji Berry (Lycium barbarum L.) Grown in Turkey
    (2021) Talay, Rabia; Erdoğan, Ümmügülsüm; Turan, Metin
    With high nutritional value, goji berry is an important fruit for human nutrition and health. Goji\rberry cultivation is done widely in many countries, farming has become widespread in recent years\rin Turkey. In study grown goji berry (Lycium barbarum L.) in Turkey are determined the physical\rand chemical characteristics of fruit (pH, titration acidity, dry matter content, ash content, water\ractivity (aw) value, protein content, HMF content, total phenolic content, total sugar content,\rreducing sugar content, sucrose content, colour values, mineral contents, organic acid contents,\ramino acid contents and some plant hormone content). Goji berry fruits have pH value 5.18, titration\racidity value 2.16%, dry matter content 89.40%, ash content 4.30%, water activity (aw) value 0.35,\rprotein content 13.18%, HMF content 9.38 mg/kg, total phenolic content 9.05 mg GAE/g, total\rsugar content 59.26%, decreasing sugar content 57.35%, sucrose content 1.90%, L* value 40.33, a*\rvalue 22.97, b* value 33.00, C* value 40.21, H° value 55.15. In addition, the mineral content, organic\racid content, amino acid content and some plant hormones of goji berry fruits were determined by\ranalysis
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    Physicochemical Properties of Honey Produced at Different Altitudes
    (2022) Erdoğan, Yaşar; Turan, Metin
    The types and densities of honeyed plants vary depending on the altitude. This causes the amount\rand Physicochemical structure of honey produced in apiaries of different altitudes to change. In this\rstudy, honey harvest from the honeybee colonies placed at different altitudes in the same\rgeographical region was carried out in the first week of September. Standard laboratory methods\rwere used to determine some physicochemical properties of the honey samples. Some of the\rminimum and maximum average values obtained as a result of the analysis of honey samples;\rmoisture 14.70% and 18.60%, free acidity 20.50 meq/kg and 25.30 meq/kg, pH 3.20 and 4.30, EC\r0.22 and 0.44 mS/cm, fructose 32% to 45%, glucose 0.10% to 0.18%, sucrose from 0.66% 1.80%,\rmaltose ranged from 0.66% to 1.80%. Also, HMF ranged from 1.80 mg/kg to 3.50 mg/kg, proline\r530.00 mg/kg and 710.00 mg/kg, Density from 1.44 g/cm3 to 1.49 g/cm3, Invertase 20.30 U/kg-\r28.50 U/kg, Diastase activity 13.23-19.07 and Total phenolic content ranged from 76.00-94.00 g.\rIt has been determined that the physicochemical structures of honey produced at different heights\rare statistically different from each other. This study aims to determine the effect of altitude\rdifference on the quantity and physicochemical structure of honey
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    Synergistic Strategies for Overcoming Salt Stress in Strawberry Farming: The Use of Organic Fertilizers and Plant Growth Promoting Rhizobacteria (PGPR)
    (Springer, 2024) Yavuz, Aysegul; Erdogan, Ummugulsum; Turan, Metin; Argin, Sanem; Kocaman, Ayhan
    The study was carried out under salt-stress conditions, and three non-microbial commercial organic fertilizers purchased from Humintech GmbH (Grevenbroich, Germany) were applied to the soil for strawberry plants. The three promoters were Fulvagra (R), based on fulvic acid, Liqhumus (R), based on humic acid, and Microsense Root (R), also based on humic acid. Treatment with Fulvagra (R) resulted in a remarkable 69.90% increase in average fruit weight and a 39.52% increase in yield in strawberry plants. These improvements remained significant when combined with plant growth promoting rhizobacteria (PGPR), resulting in a 61.81% increase in fruit weight and a 45.21% increase in yield. Liqhumus (R) treatment resulted in a significant 49.95% increase in fruit weight and a 39.30% increase in fruit yield. The introduction of PGPR further enhanced these effects by increasing fruit weight by 87.70% and yield by 63.84%. The Microsense Root (R) treatment showed 31.07 and 61.87% improvements for the respective parameters. In conjunction with this treatment, the use of PGPR produced the most significant results, with increases of 121.14 and 65.37% for respective parameters. These results indicate that the combined use of non-microbial commercial organic fertilizers with PGPR leads to higher efficiency and is promising for sustainable agricultural practices, particularly in improving the resistance of strawberry plants to salt-induced stress.