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Chemical Composition and Antioxidant Properties of Some Industrial Tree Bark Extracts    
Yazarlar
Ahmed Ma Hamad
Prof. Dr. Saim ATEŞ
Kastamonu Üniversitesi, Türkiye
Dr. Öğr. Üyesi Çağrı OLGUN
Kastamonu Üniversitesi, Türkiye
Doç. Dr. Mahmut GÜR
Kastamonu Üniversitesi, Türkiye
Özet
Wood bark is a residue of forestry production that is used as a fuel source. The chemical composition of tree bark is similar to that of the harvested wood, and it contains a variety of useful compounds. To determine the chemical composition and antioxidant activities of different barks, fir (Abies nordmanniana), beech (Fagus orientalis), pine (Pinus sylvestris), poplar (Populus alba), and oak (Quercus robur) barks were selected because they are used for industrial purposes in Turkey. The dried bark powders were extracted using a 65:35 methanol-water mixture (v/v) to determine the total phenolic content, the flavonoid content, and the antioxidant properties (2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), metal chelating, and H2O2 scavenging). The flavonoid components were analyzed by high performance liquid chromatography (HPLC) and extracted by hexane to analyze the volatile components by gas chromatography-mass spectrometry (GC-MS). The poplar bark extracts had the highest total phenolic content, highest total flavonoid content, and highest antioxidant content. The poplar bark extracts were rich in myricetin (87.761 mg/L), which is a flavonoid with rich antioxidant properties. The presence of valuable extracts suggests that barks may have uses as valuable raw materials for chemical applications such as cosmetics, perfumes, and food preservatives.
Anahtar Kelimeler
Bark,Extractive,Antioxidant,Phenolic components,Volatile components
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı BioResources
Dergi ISSN 1930-2126
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 06-2019
Cilt No 14
Sayı 3
Sayfalar 5657 / 5671
Doi Numarası 10.15376/biores.14.3.5657-5671
Makale Linki https://ojs.cnr.ncsu.edu/index.php/BioRes/article/view/BioRes_14_3_5657_Hamad_Chemical_Composition_Antioxidant_Properties_Tree_Bark/6914