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12 - Sorumlu Üretim ve Tüketim

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SORUMLU ÜRETİM VE TÜKETİM Sürdürülebilir üretim ve tüketim kalıplarını sağlamak: Ekonomik büyüme ve sürdürülebilir kalkınmayı başarmak için, malları ve kaynakları üretme ve tüketme biçimlerimizi değiştirmek suretiyle ekolojik ayak izimizi derhal azaltmamız gerekiyor. Dünya genelinde en büyük su tüketicisi tarımdır ve tarımsal sulama, insanların kullandığı tüm taze suyun yaklaşık %70’ini buluyor.

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Author: Ertas, Abdulselam ×

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Now showing 1 - 4 of 4
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    Ent-kaurane diterpenoids isolated from Sideritis congesta
    (2011-12-01) Topcu, GÜLAÇTI; Ertas, Abdulselam; Ozturk, Mehmet; Dincel, Demet; Kilic, Turgut; Halfon, Belkis; TOPÇU, GÜLAÇTI; DİNCEL, DEMET
    A new ent-kaurane diterpenoid, together with eight known ent-kauranes, were isolated from the petroleum ether and acetone extracts of the whole plant of Sideritis congesta P. H. Davis & Hub.-Mor. and their structures were elucidated as the new compound ent-7 alpha-acetoxy-16 beta, 18-dihydroxy-kaurane (7-acetyldistanol) (1) and the known compounds ent-3 beta,7 alpha-dihydroxy, 18-acetoxy-15 beta,16 beta-epoxykaurane (epoxyisolinearol) (2), sideroxol (3), sideridiol (4), siderol (5), 7-epicandicandiol (6), foliol (7), linearol (8) and sidol (9). Characterization of compounds 1-9 was based on spectral analyses and comparison with reported data, particularly the new compound 1 was identified by 1D- and 2D-NMR and mass spectroscopic analyses. The antioxidant potential of the extracts, and also of the ent-kauranes except for 7, was investigated by three methods including beta-carotene bleaching method, free radical scavenging activity and superoxide anion scavenging activity. The anticholinesterase activity was also evaluated for the ent-kauranes except for 7, and most of the diterpenes exhibited weak acetylcholinesterase inhibitory activity. However, almost all diterpenes exhibited some inhibitory activity against butyrylcholinesterase; particularly, compounds 3 and 6 exhibited better BChE inhibitory activity than the standard compound galanthamine. (C) 2011 Phytochemical Society of Europe. Published by Elsevier B. V. All rights reserved.
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    Fatty Acid, Essential Oil and Phenolic Compositions of Alcea pallida and Alcea apterocarpa with Antioxidant, Anticholinesterase and Antimicrobial Activities
    (2016-01-01) Ertas, Abdulselam; Boga, Mehmet; Gazioglu, IŞIL; Yesil, Yeter; Hasimi, Nesrin; Ozaslan, Cumali; YILMAZ, Hasibe; KAPLAN, Muammer; GAZİOĞLU, IŞIL
    This study was the first phytochemical and biological activity report on Alcea pallida and Alcea apterocarpa extracts. The main constituents of the essential oils were identified as arachidic acid (34.2%) for A. pallida, and hexatriacontane (25.3%) for A. apterocarpa. The main constituents of the fatty acids obtained from petroleum ether extracts of A. pallida and A. apterocarpa were identified as palmitic acid (31.2%) and oleic acid (25.6%), respectively. The phenolic compositions of the samples were determined using HPLC (LC-20 liquid chromatographic system). A. pallida and A. apterocarpa showed the same peaks which were ascorbic, caffeic, salicylic and p-hydroxybenzoic acids and quercetin, respectively. Salicylic acid showed the highest abundance. Among the eight extracts, the acetone extract of A. pallida possessed the best ABTS cation radical scavenging activity and moderate butyryl-cholinesterase activity at 200 mu g/mL. The A. pallida acetone extract exhibited 53.12% inhibition in DPPH free radical scavenging activity method at 100 mu g/mL concentration. The acetone extract of A. pallida showed weak antimicrobial activity against Escherichia coli, Streptococcus pyogenes, Staphylococcus aureus, Pseudomonas aeruginosa and moderate activity against Candida albicans (inhibition zone diameter 16 mm). The acetone extract of A. apterocarpa showed moderate activity against C. albicans (inhibition zone diameter 14 mm) and S. aureus (inhibition zone diameter 13 mm); weak activity against E. coli., S0 pyogenes, and P. aeruginosa.
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    Chemical Profile of Malva Neglecta and Malvella Sherardiana by LC-MS/MS, GC/MS and Their Anticholinesterase, Antimicrobial and Antioxidant Properties With Aflatoxin-Contents
    (2017-01-01) Hasimi, Nesrin; Ertas, Abdulselam; Oral, Elif Varhan; Alkan, Huseyin; Boga, Mehmet; Yilmaz, Mustafa Abdullah; Yener, Ismail; Gazioglu, IŞIL; Ozaslan, Cumali; AKDENIZ, Mehmet; Kolak, Ufuk; GAZİOĞLU, IŞIL
    The purpose of the present work was to determine the phenolic and the fatty acids profiles by LC-MS/MS and GC/MS with their antioxidant, anticholinesterase and antimicrobial activities, and aflatoxin contents of Malva neglecta and Malvella sherardiana. The phenolic contents of M. neglecta and M. sherardiana were determined by LC-MS/MS. Malic and 4-OH benzoic acids were found to be the most abundant compounds in M. neglecta and M. sherardiana, respectively. On the other hand, essential oil and fatty acid compositions were determined by GC/MS analysis. The methanol extracts of the plants showed the highest effect in all antioxidant assays in this study. The methanol extract of M. neglecta showed the highest activity among the petroleum ether, acetone, methanol and water extracts against acetyl-and butyryl-cholinesterase enzymes (53.68% and 63.95% inhibition ratio, respectively). The acetone extracts of M. neglacta and M. sherardiana exhibited moderate activity against C. albicans with 18 and 17 mm inhibion zone diameter, respectively. The results of the present study is also showed that the M. neglecta and M. sherardiana can also be used as a food source due to its high phenolic acid content and good antioxidant property. Also, the samples were aflatoxin free.
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    Evaluation of Antioxidant, Cholinesterase Inhibitory and Antimicrobial Properties of Mentha longifolia subsp noeana and Its Secondary Metabolites
    (2015-01-01T00:00:00Z) Ertas, Abdulselam; Goeren, AHMET CEYHAN; Hasimi, Nesrin; Tolan, Veysel; Kolak, Ufuk; GÖREN, AHMET CEYHAN
    The aim of the present study was to determine the chemical structures of the isolated compounds, the essential oil and fatty acid compositions of Mentha longifolia subsp. noeana with their biological activities. Ursolic acid (1), uvaol (2), stigmast-5-ene-3 beta-yl formate (3), stigmast-5-en-3-one (4), beta-sitosterol (5), bis(2ethylhexyl) benzene-1,2-dicarboxylate (6), hexacosyl (E)-ferulate (7) and 5-hydroxy-6,7,3-,4--tetramethoxy flavone (8) were obtained from the aerial parts. The compounds (2-4, 6, 7) were isolated for the first time from a Mentha species. Palmitic acid (40.8%) was the major component of the non-polar fraction obtained from the petroleum ether extract. Pulegone (32.3%) was the main constituent of the essential oil which exhibited strong butyrylcholinesterase inhibitory activity (77.36 +/- 0.29%), moderate antimicrobial activity against Escherichia coli, Staphylococcus aureus, and Candida albicans. The methanol extract showed 80% inhibition of lipid peroxidation, and the acetone extract possessed moderate DPPH free radical scavenging activity (60% inhibition) at 100 mu g/mL.