Flora of Turkey and the East Aegean Islands.

Pressure-Plate Extractor 內 土壤水分含量 變化로부터 不飽和水理傳導度의 計算

This paper presents a comparison of the contents of capsaicin, dihydrocapsaicin and total phenolics as well as of the antioxidant activities of six types of peppers of the genus Capsicum. The varieties were analyzed in terms of their in vitro antioxidant activity using ferric reducing antioxidant powder (FRAP), 1,1-diphenyl-2-picrylhydrazyl (DPPH) and 2,2'-azinobis 3-ethylbenzothiazoline 6-sulfonate (ABTS(●+)) assays. The contents of phenolics and capsainoids as well as the antioxidant activities were higher in seeds than in pulps. The correlations (ρ < 0.01) between the phenolic composition and the capsaicinoids levels were high (r = 0.98). Similarly high were also the correlations between the antioxidant activities and the contents of total phenolics and capsaicinoids. Data were analyzed using principal component analysis (PCA), hierarchical cluster analysis (HCA) and multiple linear regression (MLR). PCA explained 97.77 % of the total variance of the data, and their separation into three groups in a scatter plot was divised. Using HCA, three clusters were suggested. Cluster one, formed by pulps (bell pepper, orange habanero, cayenne, dedo de moca and red habanero), showed the lowest levels of the compounds quantified. Most seed samples were grouped in cluster two (bell pepper, cayenne, dedo de moca and malagueta) together with malagueta pulp. Cluster three was formed by orange and red habanero seeds, which showed the highest levels of all compounds analyzed. The MRL revealed that the values of capsaicinoids and total phenols are more adequate to predict the antioxidant activity measured by the FRAP assay.

/pdf/a-comparative-study-of-the-capsaicinoid-and-phenolic-1pao07fkcj.pdf

A comparative study of the capsaicinoid and phenolic contents and in vitro antioxidant activities of the peppers of the genus Capsicum: an application of chemometrics

Bitter melon provides health benefits against various ailments for improving the quality of life. It is nutrient dense plant-based food containing versatility of bioactive compounds such as alkaloi...

https://www.tandfonline.com/doi/pdf/10.1080/10942912.2018.1446023

Bitter melon (Momordica charantia): a natural healthy vegetable

Plants have been used since ancient times as an important source of biologically active substances. The aim of the present study was to investigate the phytochemical constituents (flavonoids and phenolics), antioxidant potential, cytotoxicity against HepG2 (human hepato carcinoma) cancer cell lines, and the antimicrobial activity of the methanol extract of selected traditional medicinal plants collected from Mizoram, India. A number of phenolic compounds were detected using HPLC-DAD-ESI-TOF-MS, mainly Luteolin, Kaempferol, Myricetin, Gallic Acid, Quercetin and Rutin, some of which have been described for the first time in the selected plants. The total phenolic and flavonoid contents showed high variation ranging from 4.44 to 181.91 μg of Gallic Acid equivalent per milligram DW (GAE/mg DW) and 3.17 to 102.2 μg of Quercetin/mg, respectively. The antioxidant capacity was determined by DPPH (IC50 values ranges from 34.22 to 131.4 μg/mL), ABTS (IC50 values ranges from 24.08 to 513.4 μg/mL), and reducing power assays. Antimicrobial activity was assayed against gram positive (Staphylococcus aureus), gram negative (Escherichia coli, Pseudomonas aeruginosa), and yeast (Candida albicans) demonstrating that the methanol extracts of some plants were efficacious antimicrobial agents. Additionally, cytotoxicity was assessed on human hepato carcinoma (HepG2) cancer cell lines and found that the extracts of Albizia lebbeck, Dillenia indica, and Bombax ceiba significantly decreased the cell viability at low concentrations with IC50 values of 24.03, 25.09, and 29.66 μg/mL, respectively. This is the first report of detection of phenolic compounds along with antimicrobial, antioxidant and cytotoxic potential of selected medicinal plants from India, which indicates that these plants might be valuable source for human and animal health.

/pdf/evaluation-of-phenolic-content-variability-along-with-4go1ue7fw0.pdf

Evaluation of Phenolic Content Variability along with Antioxidant, Antimicrobial, and Cytotoxic Potential of Selected Traditional Medicinal Plants from India.

Variation in capsaicin contents of different Capsicum species and lines by varying drying parameters.

Knowledge of genetic diversity could be beneficial by contributing important information in the selection of breeding material. The objective of this study was to explore the genetic diversity and relationship in the Turkish tobacco germplasm with the iPBS- retrotransposons marker that emerged as a universal method. A total of 90 landraces and 6 commercial cultivars collected from different geographical regions of Turkey were used in this study. Eleven most polymorphic iPBS-retrotransposons primers yielded a total of 119 scorable bands and 98 of these bands were found to be polymorphic (82.35%), with an average of 8.91 polymorphic fragments for each primer. The mean polymorphism information contents were found to be 0.33, ranging from 0.10 to 0.80. The unweighted pair group method with arithmetic mean revealed that the genotypes belonging to the same geographical regions were often present in the same group and very close to each other. Based on the Bayesian clustering model, the genetic structure of Turkish tobacco germplasm was divided into 2 main groups. This is first study to explore the genetic diversity of Turkish tobacco by the iPBS-retrotransposons and we believe that in future the results of this study will serve as a foundation for the development of new and improved tobacco varieties in Turkey and the rest of world.

/pdf/genetic-diversity-assessment-in-nicotiana-tabacum-l-with-3bykw20vgd.pdf

Genetic diversity assessment in Nicotiana tabacum L. with iPBS-retrotransposons

Antimicrobial activity and agricultural properties of bitter melon (Momordica charantia L.) grown in northern parts of Turkey: a case study for adaptation

Variation in the fruit phytochemical and mineral composition, and phenolic content and antioxidant activity of the fruit extracts of different fennel (Foeniculum vulgare L.) genotypes

Background: Ocimum basilicum L., commonly known as sweet basil, is an important aromatic plant cultivated in many parts of the world for its
essential oil. Basil does not show natural distribution in Turkey but they are cultivated as medicinal, seasoning or oil plants especially in the
western and southern Anatolia. In this study, introduction of new production patterns of green and purple basil into Rize province in the northern
parts of Turkey is the main objective of the present study. In this context, herb yield and chemical composition (essential oil and its components)
of green and purple basil plants grown under open field and underneath or between kiwi plantations were determined and compared.
Materials and Methods: The experiments were arranged as a split plot design with three replications in May in 2010 and 2011 in open-field
conditions and between kiwi plantations. Three harvests were done for each year. After each harvest, above ground parts were dried at 35 oC and
essential oils from aerial parts after each harvest were extracted using 30 g of dried material by hydro distillation (4 h) with Neo-Clevenger
apparatus. The essential oil compositions were identified by GC-MS.
Results: There were decline trends with respect to the plant height, fresh and dry herb yield in the second year. For both experimental years, the
highest fresh and dry herb-yields were obtained in open-field conditions in green basil. There were no statistically significant differences in
relation to essential oil yield in open-field conditions and kiwi plantations but the highest essential content was ascertained in open-field
conditions for green basil. The major aroma constituents of basil were methyl cinnamate and linalool and the highest percentage was determined
in open-field conditions for green basil.
Conclusion: The lowest essential content obtained in open-field and between kiwi plantations for green and purple basil plants was even higher
than the limit (%0.3) established by Turkish Standards Institution and total yield concerned with fresh and dry herb yield complied with the
previously proposed literatures. Hence, basil cultivation underneath kiwi plantations may be implemented.

/pdf/herb-yield-and-chemical-composition-of-basil-ocimum-lgod9xavrc.pdf

Gulsum Yaldiz

Papers

Variation in capsaicin contents of different Capsicum species and lines by varying drying parameters.

Genetic diversity assessment in Nicotiana tabacum L. with iPBS-retrotransposons

Antimicrobial activity and agricultural properties of bitter melon (Momordica charantia L.) grown in northern parts of Turkey: a case study for adaptation

Variation in the fruit phytochemical and mineral composition, and phenolic content and antioxidant activity of the fruit extracts of different fennel (Foeniculum vulgare L.) genotypes

Herb yield and chemical composition of basil (ocimum basilicum l) essential oil in relation to the different harvest period and cultivation conditions