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Nazlı Savlak Özlem Çağındı Gizem Erk Birsen Öktem Ergün Köse 《Journal Of Aquatic Food Product Technology》2020,29(6):592-602
ABSTRACT Seabream fish bone powder was produced using different chemical methods and tap water. The effect of different chemical procedures (sodium hydroxide (NaOH); NaOH + citric acid; NaOH + sodium hypochlorite (NaOCl); NaOH + ethanol (EtOH); and NaOH + hydrogen chloride (HCl)) and tap water on proximate composition, yield, mineral composition, color, and sensorial odor was investigated. Despite its high bone powder yield (59.39%), tap water treatment was not an efficient method due to low calcium (Ca2+, 232.13 g/kg) and phosphorus (P, 111.63 g/kg) concentration and heavy fish odor. Sensorial odor analysis of seabream fish bone powder showed that tap water received the lowest scores (1.71/5), while chemically treated samples received sensorial odor scores higher than 4.00, with an average of 4.61, indicating that they had a very slight odor. The best fish bone powder yield was obtained using NaOH treatment (21.46%), where Ca2+ (276.73 g/kg) and P (147.23 g/kg) content was also high. The utilization of chemicals in combination with NaOH did not increase the sensorial odor score of seabream fish powders but resulted in a decrease in powder yield. Moreover, the mineral composition of all chemical processing techniques was comparable. Processing by-products of seabream fillet production with 8% NaOH will contribute to daily Ca2+ and P intake of individuals. 相似文献
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For the countries struggling with climate change, sustainable forestry is one of the greatest challenges and is difficult to define, implement, and to measure. According to the scientific community’s consensus on climate change, forests are one of the major sinks and sustainable forest management (SFM) is needed to prevent deforestation and its negative effects on natural ecosystems. Despite being a party to many international treaties/agreements related to land use policies (LUP) that are promoting SFM to protect and develop forest resources, the 2/B application in Turkish forest legislation has been causing deforestation in Turkey since the 1970s.
In this study, 2/B applications–political and legal process–causing deforestation by land use change (LUC) are investigated by carrying out a legal analysis. About 500.000 ha of forests have been lost due to the 2/B application and as a LUP directly affects SFM, carbon sequestration capacities (CSC), and therefore, climate change. To exemplify this pre and post-LUC change and effect, the amount of carbon that was prevented from being absorbed as 176,7 tonnes/ha on average in a given forest area for the year 2016. There is a vital need to address the negative effects of ill-defined forest legislation to achieve SFM. 相似文献
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Birsen Demirata Reşat Apak Gülcin Gümüs Hüseyin Afsar 《Water, air, and soil pollution》2002,133(1-4):265-282
The effects of several factors on the settling rate of aluminiumhydroxide were investigated during chemical coagulation using aluminium salts. Experimental variables were pH, aluminium (III) concentration and the order of addition of reagents. Experiments were carried out at pH 5–8 and rapid settling was achieved when aluminium (III) solutions were added to Na2CO3 solutions near neutral pH, close to the minimumsolubility pH of Al(OH)3. For a narrow range of total Al concentration where Al(III) species were supersaturated with respect to the solid phase, Al(III)-added-to-carbonate type mixtures yielded a higher settling rate than mixtures obtainedby the reverse order of reagent addition. The results were interpreted by comparing the rates of formation of polymer andsolid (amorphous Al(OH)3) phases. It was concluded that Al(III) coagulants should be added to water containing natural or artificially incorporated carbonate alkalinity for rapid settling of Al(OH)3 flocs. 相似文献
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Birsen Aydin 《Pesticide biochemistry and physiology》2011,100(2):165-171
Deltamethrin and thiachloprid are an α-cyano class pyrethroid and neonicotinoid insecticide, respectively. Recently, a pesticide combining deltamethrin and thiacloprid has also been released. In the present study, the acute and subacute toxic effects of deltamethrin, thiachlopride, and a combination of these insecticides, on the lymphoid organs (spleen, thymus and bone marrow), polymorphonuclear leukocytes (PMNs) and plasma of rats, were determined to better understand mammalian antioxidant-oxidant and inflammatory system responses. For this purpose, rats were treated orally with different doses of thiacloprid (single acute dose of 112.5 mg/kg); subacute dose of 22.5 mg/kg/day for 30 days; deltamethrin (single acute dose of 15 mg/kg); subacute dose (3 mg/kg/day for 30 days), or a combination of these pesticides. Results were compared with those from a comparable dosing regimen with the known immunosuppressive drug cyclophosphamide. Pesticide treatments caused significant changes in the levels of liver and kidney injury markers. Antioxidant enzyme (catalase and glutathione peroxidase), glutathione and plasma antioxidant levels decreased but lipid peroxidation increased in all lymphoid organs and the plasma. Glutathione-S-transferase and especially DT-diaphorase activity, decreased after thiacloprid treatment. Myeloperoxidase activity, carbonyl content, lipid peroxidation and total nitrite levels increased in PMNs and plasma. When evaluated as a whole, the oxidative and inflammatory stresses seen in the pesticide combination groups were not much more pronounced than in the groups treated with a single pesticide. In terms of the evaluated biochemical parameters, the pesticides showed similar effects to cyclophosphamide. 相似文献
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Birsen Çakir 《The Journal of Horticultural Science and Biotechnology》2013,88(6):663-673
SummaryHexokinase catalyses the first step in the metabolism of glucose, but has also been proposed to be involved in sugar sensing and signalling in both yeasts and plants. The substrates of hexokinase such as glucose (Glc) and fructose (Fruc) are also the most important sugars during grape berry ripening. The grapevine proteome database was analysed to investigate the roles of hexokinases in grape berry growth and development. Six hexokinase genes displaying high nucleotide sequence identity (72 – 87%) with hexokinase genes in other species were identified. Most of the Vitis vinifera hexokinase (VvHXK) genes had a highly conserved genomic structure consisting of nine exons and eight introns. A search for cis–regulatory elements in the promoter regions of all six hexokinase genes revealed that most were probably regulated by light, sugar, phytohormones, or abiotic stress. The isolation and expression of a hexokinase cDNA from V. vinifera ‘Sultanine’, named VvHXK3, was also reported. Analysis of the predicted amino acid sequence of VvHXK3 suggested that the protein could be a chloroplast-stromal hexokinase with a possible transit peptide cleavage site after amino acid residue 26. The VvHXK3 gene was differentially expressed in a variety of organs including berries, leaves, roots, and pollen, but its expression was highest in berries during their early development and at the start of ripening. To determine its function, VvHXK3 cDNA was expressed in a triple mutant yeast strain that lacked the ability to phosphorylate Glc and Fru and, therefore, was unable to grow on these sugars as sole carbon source. Mutant yeast cells that expressed VvHXK3 grew on both Glc and Fru, indicating that VvHXK3 could complement this mutant and had hexokinase activity. 相似文献
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J.?A.?Lucas GarcíaEmail author M.?Schloter T.?Durkaya A.?Hartmann F.?J.?Gutiérrez Ma?ero 《Biology and Fertility of Soils》2003,37(6):381-385
The effect of a Pseudomonas fluorescens strain (Aur 6) isolated from Lupinus hispanicus on pepper seedlings (Capsicum annum cv. Roxy) was studied. This strain had already shown its capacity as a plant growth promoting bacteria (PGPB) on seedlings of Lupinus albus, Pinus pinea and Quercus ilex . Strain Aur 6 significantly enhanced all biometric parameters measured: fresh weight, height, neck root diameter and slender index (height/neck root diameter). The PGPB effects could be related to auxin and siderophore production, as strain Aur 6 produced substances of both classes in pure culture. For a further monitoring of Aur 6 in the rhizosphere, strain-specific monoclonal antibodies were developed. Using the strain-specific it could be proofed that Aur 6 is an effective and persistent colonizer of pepper roots, but it is not able to behave as an endophyte. 相似文献
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