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Hacer Coklar,Mehmet Akbulut 한국원예학회 2021 Horticulture, Environment, and Biotechnology Vol.62 No.5
It is important to determine the most suitable ripening period of fruit regarding bioactive compounds for evaluating as anindustrial and in human nutrition. The aims of this study were to determine the changes in non-anthocyanin phenolics, anthocyanins,and antioxidant activity of Mahonia aquifolium fruit throughout ripening and to determine the biosynthetic pathwayof the phenolic compounds. The fruit was collected from shrubs at 10 diff erent ripening stages between June 21 and August17, 2016. The samples were analyzed for individual anthocyanins, non-anthocyanin phenolics, and antioxidant activity. There were signifi cant decreases in gentisic, chlorogenic, p -coumaric, ferulic acids, rutin, and isorhamnetin 3- O -glucosideand increases in protocatechuic, syringic acid, caff eic acid, myricetin, and luteolin. The concentrations of delphinidin-3- O -glucoside, cyanidin-3- O -glucoside, and pelargonidin-3- O -glucoside rose progressively from the beginning to the end ofripening, while decreases occurred from the 6th stage in the amounts of malvidin-3- O -glucoside, peonidin-3- O -glucoside,cyanidin-3- O -rutinoside, and delphinidin-3- O -rutinoside. A decrease followed by an increase in the antioxidant activityindicated that the phenolic profi le of the fruit changed toward the end of ripening, including for the compounds with higherantioxidant potential. In this study, the most suitable harvesting period for Mahonia berries was determined
Effect of wild watermelon rootstocks and water stress on chemical properties of watermelon fruit
Musa Seymen,Duran Yavuz,Muhammet Ercan,Mehmet Akbulut,Hacer Çoklar,Ertan Sait Kurtar,Nurcan Yavuz,Sinan Süheri,Önder Türkmen 한국원예학회 2021 Horticulture, Environment, and Biotechnology Vol.62 No.3
Drought is one of the most important abiotic factors that restrict the production of agricultural plants. An eff ective way toavoid the negative eff ects of drought on crops is to cultivate high-yielding varieties by grafting them onto drought-tolerantrootstocks with a strong root system. For this purpose, fi ve diff erent plant materials were used: wild watermelon rootstock,i.e., wild watermelon (A 1 and A 2 ), open-pollinated Lagenaria siceraria (gourd) rootstocks (A3), Cucurbita maxima Duchesne× Cucurbita moschata Duchesne (TZ-148) F1 watermelon rootstocks (A 4 ), and the ungrafted control. Five diff erentirrigation depths were applied considering irrigation water (IW)/cumulative pan evaporation (CPE) rations (I 100 : 1.0 IW/CPE, I 75 :0.75 IW/CPE, I 50 :0.50 IW/CPE, I 35 :0.35 IW/CPE, and I 0 :rain-fed). The results showed that the use of rootstockand water stress increased the rate of sugar content in the fruit. The highest positive relationship was found between glucoseand total sugar, whereas the highest negative relationship was observed between sucrose and malic acid. Parameters such asglucose, total sugar, and citric acid showed signifi cant changes in drought stress. Fructose and malic acid showed signifi cantdiff erences between the rootstocks. Principal Component Analysis (PCA) revealed that the A 2 I 50 application was locatedin the positive region of both components and showed important results in these parameters. The TZ148 rootstock contributedsignifi cantly to the quality of watermelon. In addition, the A 2 wild watermelon rootstock showed respectable results,especially under water stress conditions. Based on these results, we conclude that the use of wild watermelon rootstock willcontribute to the fruit quality in arid and semi-arid areas with limited water resources.
Ilkay Acıkgoz-Erkaya,Gulay Bayramoglu,Aydin Akbulut,Mehmet Yakup Arica 한국생물공학회 2021 Biotechnology and Bioprocess Engineering Vol.26 No.5
Biodiesel is a renewable fuel used mainly in diesel engines. At the present time, biodiesel is largely produced by acid or alkali transesterification reactions. A hot spring water algae isolate "Kamptonema formosum" was cultivated at three different temperatures, and the algae oil was extracted using chloroform and methanol (v/v, 1/1 ratio) as the solvent. The maximum amount of algal biomass (1.86 g/L) was obtained at 25°C, and the extracted oil was found to be 48.7% of the total dry biomass. Diatomic earth particles (Biosilica) were magnetized via thermal coprecipitation reaction, and then it was grafted with polydopamine (MBioSi@PDA). The lipase was covalently immobilized on the surface of the MBioSi@PDA via Schiff’s base reaction. The immobilization conditions were optimized and 3.0 mg/mL as the initial lipase concentration in the immobilization medium was found to be the most favorable. At this lipase concentration, the amount of the immobilized lipase on the MBioSi@PDA particles and immobilization yield were found to be 81.9 mg/g and 67.9%, respectively. The MBioSi@PDA@lipase particles were used for conversion of K. formosum oil into biodiesel, and the conversion yield was found as 91.2% under optimum conditions. The fatty acid methyl ester (FAME) compositions of the alga oil were identified using a gas chromatography-mass spectrometry (GC-MS). K. formosum oil mainly composed of the required fatty acids (i.e., 16 and 18 carbon long-saturated and unsaturated fatty acids) for biodiesel synthesis, and these were advantageous for synthesis of biodiesel from the algal oil.
Urun, Yuksel,Utkan, Gungor,Yalcin, Suayib,CosKun, Hasan Senol,Kocer, Murat,Ozdemir, Nuriye Yildirim,Kaplan, Mehmet Ali,Arslan, Ulku Yalcintas,Ozdemir, Feyyaz,Oztuna, Derya,Akbulut, Hakan,Icli, Fikri Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.8
Background: An association between the ABO blood group and the risk of certain malignancies, including pancreatic and gastric cancer, has been reported previously. However, it is unclear whether this association is valid for gastrointestinal stromal tumors (GIST). In this study, ABO blood groups and the Rh factor were investigated in a series of GIST cases. Material and Methods: In 162 patients with GIST, blood group and Rh factor were examined and compared with a control group of 3,022,883 healthy volunteer blood donors of the Turkish Red Crescent between 2004 and 2011. The relationship of blood groups with tumor size, mitotic activity, and age were also evaluated. Results: Overall, the ABO blood group and Rh factor distributions of the 162 patients with GIST were similar to those of the general population. There were no significant differences between both ABO blood types and Rh factor in terms of tumor size, mitotic activity, and age. Conclusion: This is the first study reported on this issue. In our study, we didn't find any relationship between GIST and ABO blood group and Rh factor. However further studies with larger number of patients are needed to establish the role of blood groups in this population.