Sürdürülebilir Kalkınma Amaçları
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- MakaleYalnız künye2022COMPOSITION OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES AND CHEMICAL COMPONENTS OF ESSENTIAL OIL FROM FLOWERS AND LEAVES OF Pyrus elaeagnifolia Pallas IN TURKEY
Fidan, Muhammed Said; Oz, Mehmet; Ucuncu, Osman; Baltaci, Cemalettin; Karatas, Seyda Merve
Gumushane region in Turkey is rich in plant diversity. The flowers and leaves of Pyrus elaeagnifolia Pall. plants that will form the basis of this research were collected from the places determined. In this study; the essential oils of flowers and leaves of P. elaeagnifolia plants were obtained by hydrodistillation method in a Clevenger type device. The chemical composition of volatile oils diluted with hexane were determined by analyzing with a GC-MS/FID instrument. The quantity of antioxidant activity of the obtained essential oils was determined by total phenolic content, free radical scavenging amounts, total flavonoid content, total antioxidant content, free radical scavenging capacity and ferric reducing antioxidant power capacity according to methods. Antimicrobial activity of essential oils was determined against 23 different microorganisms by disc diffusion method. As a result; essential oil yields in percentage are 0.44% and 0.72% in the flowers and leaves of the P. elaeagnifolia. Chemical classes with the highest percentage of compounds in essential oils of plant parts: Hydrocarbons (79.77%) and aldehydes (33.31%) were detected in the flowers and leaves of the P. elaeagnifolia. In addition, the main components found in essential oils are tricosane (36.98%-15.89%) in the flowers and leaves of the P. elaeagnifolia. The determination of antioxidant activity obtained from samples collected from plant parts was determined total phenolic substance amounts in the range of 48.57-68.32 mg GAE/100 mL, free radical scavenging amounts between 9.52-40.95 mg AA/100 mL, flavonoid substance amounts in the range of 1.34-3.95 mg QE/100 mL, total antioxidant amounts in the range of 66.93-185.10 mg AA/100 mL, free radical scavenging capacity between 23.40-81.02 mg AA/100 mL and FRAP capacity in the range of 4.20-10.50 mg FeSO4/100 mL. According to the results obtained with total phenolic content, free radical scavenging amounts, total flavonoid content, total antioxidant content, free radical scavenging capacity and ferric reducing antioxidant power capacity was determined the highest antioxidant properties in leaves of P. elaeagnifolia. According to the results of the antimicrobial activities analysis obtained from the collected samples of plant parts, it was determined that only the flowers of P. elaeagnifolia show antimicrobial activity against the microorganisms used.
- MakaleAçık Erişim2018Gümüşhane Yöresi Kuşburnu (Rosa canina L.) ve Siyah Kuşburnu (Rosa pimpinellifolia L.) Meyvelerinin C Vitamini ve Şeker Analizleri
Deniz, İlhan; Oz, Mehmet; Baltaci, Cemalettin
Ülkemizin önemli odun dışı orman ürünlerinden olan kuşburnu, tıbbı bitki ve gıda maddesi olarak kullanılmaktadır. Bu çalışmada, 2013 ve 2014 yıllarında Gümüşhane ilinde doğal olarak yetişen Kuşburnu (Rosa canina L.) ve Siyah kuşburnu (Rosa pimpinellifolia L.) meyve örneklerinin C vitamini ve şeker analizleri yıllara göre karşılaştırarak yapılmıştır. Örneklerin C vitamini analizleri, HPLC-UV cihazı kullanılarak ČSN EN 14130 metodu ile; şeker analizleri, HPLC-RID cihazı kullanılarak TS 13359 metoduna göre gerçekleştirildi. 2014 yılı siyah kuşburnu meyve örneklerindeki C vitamini miktarı (305.92 ± 2.45 mg/100g), 2013 yılı meyve örneklerinden (199.90 ± 2.11 mg/100g) daha fazla bulunmuştur. Kuşburnu meyvelerinde ise 2013 yılı örneklerindeki C vitamini miktarı (423.61 ± 5.13 mg/100g), 2014 yılı örneklerinden (320.43 ± 3.98 mg/100g) daha fazla olduğu tespit edilmiştir. Siyah kuşburnu ve kuşburnu meyveleri karşılaştırıldığında ise kuşburnu meyvelerinin C vitamini miktarları bu iki yılda da siyah kuşburnundan daha fazla olmuştur. 2014 yılı siyah kuşburnu meyvelerinin toplam şeker miktarları (16.57± 0.58 g/100g), 2013 yılından (11.01 ± 0.66 g/100g) daha fazla bulunmuştur. Kuşburnu meyvelerinde ise 2013 yılı meyvelerindeki toplam şeker miktarı (18.26 ± 0.74g/100g), 2014 yılından (16.32 ± 0.49 g/100g) daha çok tespit edilmiştir. Her iki kuşburnu türü karşılaştırıldığında 2013 yılı meyvelerinin toplam şeker miktarı, kuşburnunda daha fazla iken 2014 yılı meyvelerinin toplam şeker miktarının ise siyah kuşburnunda daha fazla olduğu görülmüştür.
- MakaleAçık Erişim2018Type, quantity, and re-use of residues in the forest products industry in Trabzon, Turkey
Top, Yener; Adanur, Hakan; Oz, Mehmet
It is necessary to know the type and quantity of wastes to select the proper applications and waste management strategies. This study investigates the type, quantity, and utilisation methods of wastes generated by micro-sized enterprises that produce timber and furniture, which are two major sub-sectors of the forest products industry in Trabzon. A total of 885 enterprises of manufacturing timber and furniture in Trabzon were identified by reviewing the records from the professional chambers of commerce. The stratified sampling method was used to compare the sub-sectors, and the sample size was determined as 120. Among these, 70 furniture- and 50 timber-producing enterprises were interviewed. The chi-square test was used to determine whether the applications of timber and furniture enterprises are dependent on each other. In general, there are no differences in waste utilisation applications and education level between the sub-sectors. The percentage of the owners/managers that received any vocational training is 77.5% in two sub-sectors. In general, engineered wood wastes are used as fuel. The majority of the owners/managers in the timber industry believe that their waste has an economic value compared to those in the furniture sector. The total amount of wood waste generated by sectors was 528 tons in a month.
- MakaleYalnız künye2017Approaches of Micro-Scale Furniture and Timber Producing Businesses towards Their Waste and Environment
Adanur, Hakan; Top, Yener; Oz, Mehmet
This study aims to demonstrate the environmental awareness and practices of micro-scale businesses operating in the furniture and timber industry, which are two sub-sectors of the forest products industry. Small and mediumsized businesses have a significant place in every country's economy for their size, production and employment. While 99.9% of the timber, furniture and paper sub-sectors constituting the forest industry are in the small and medium-sized class, 96% of them are in the micro-scale business class. Although the environmental impacts of each of these businesses are limited, they have an important influence in total. Since the late 1980s, environmental impacts of businesses have been an increasing matter of concern. As a result, there is an increasing pressure on small and medium-sized business owners and managers to improve their environmental management practices and performances. A questionnaire was applied to 120 businesses representing 885 micro-scale timber and furniture producing businesses operating in Trabzon by face to face interview in 2015. The clear majority of these businesses believe there is environmental pollution, but the number of businesses that believe their businesses less pollute the environment. In addition, some of the results of the survey are that 66% of the businesses believe that waste cannot be reduced and there is no organization collecting the waste.
- MakaleYalnız künye2014Structural Analysis of Forest Product Businesses in GümüşhaneProvince
Yaşar, Mehmet; Adanur, Hakan; Top, Yener; Oz, Mehmet
In total, 95% of all business enterprises established in Turkey are micro-scale, and this figureincreases to 98.6% in the forest products industry. Micro-scale enterprises are important in terms ofproduction, employment, and overcoming economic imbalances among regions. The forest productsindustry, which includes three subdivisions within the manufacturing sector, occupies an important placein the overall Turkish manufacturing sector. Thus, this study examined the structural characteristics offorest product enterprises in Gümüşhane Province. The research involved in-person interviews withpersonnel at 47 enterprises. The data revealed that the sawmill division was especially important withrespect to the use of local poplar logs. The sawmill and furniture divisions accounted for 28% of allenterprises and 26% of all employees in the manufacturing sector in Gümüşhane. We found that 57% ofenterprises had difficulty in finding working capital and 55% of enterprises experienced shortages oflabour. The average contribution of each forest products business to employment (2.55) was more thanthat of other manufacturers in Gümüşhane (2.27). The forest product businesses in Gümüşhane resembleother micro-scale enterprises located in other regions of Turkey in terms of their structural properties.
- MakaleYalnız künye2013Antioksidan analiz yöntemleri ve Doğu Karadeniz Bölgesinde antioksidan kaynağı olarak kullanılabilecek odun dışı bazı bitkisel ürünler
Deniz, İlhan; Okan, Onur Tolga; Varlıbaş, Hülya; Oz, Mehmet
Doğu Karadeniz Bölgesi fiziksel ve farklı iklimsel özellikleri sebebiyle büyük bir genetik bitki çeşitliliğine sahiptir. Bu bitkiler, oksijen ve fotonların sebep olduğu oksidatif stresi önleyen potansiyel antioksidan kaynaklarıdır. Antioksidan bileşenlere ilgi son yıllarda artmıştır. Bunun sebebi, antioksidanlarca zengin gıdaların tüketme miktarı artırıldığında farklı dejeneretif hastalıklara yakalanma riskinin azaltılacağına inanılmasıdır. Bu çalışmada Doğu Karadeniz bölgesinde antioksidan kaynağı olarak kullanılabilecek ve ticareti yapılan 10 adet bitki seçilmiştir. Bu bitkilerin antioksidan aktiviteleri ile beraber potansiyel kullanım alanları incelenmiştir. Ayrıca antioksidan aktiviteye sebep olan bileşenler ile antioksidan tayin yöntemleri de tartışılmıştır.