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Alveolar bone density variation depending on position
Abstracts / Journal of Biotechnology 231S (2016) S4–S109
Alveolar bone density variation depending on position Vlad Cristian Dobrea 1,∗ , Anca Alexandra Popescu 1 , Mimi Dobrea 2 , Mihai Burlibasa 1 , Ion Radoi 2 , Agripina Sapcaliu 3 1 University of Medicine and Pharmacy, Carol Davila, Bucharest, Romania 2 University of Agronomical Sciences and Veterinary Medicine, Bucharest, Romania 3 Beekeeping Research and Development Institute of Bucharest, Romania
E-mail address: [email protected] (V.C. Dobrea). A dental implant stability is dependent on alveolar bone density, the placement of the implant on the maxilla or mandible, the cortical thickness, etc. The alveolar bone density in different sites of mandible and maxilla was performed in this study. Cone beam computed tomographic images from 54 patients (25 males and 29 females with age ranging between 20 and 50 years) were evaluated. The alveolar bone density was determined in Hounsfield Units (HU) at 2 mm thickness of cortical bone. The density of alveolar bone of mandible was greater (517.98 HU ± 10.29) than that of the maxilla (478.89 HU ± 113.53). The values of the alveolar bone density were lower to the incisors and increased towards the molars. The alveolar bone density inside of the implant was lower (398.61 HU ± 171.22 on maxilla and 510.71 HU ± 226.61 on mandible) than that outside (559.17 HU ± 214.99 on maxilla and 625.26 HU ± 186.98 on mandible). Our results are according to the data from the literature. The alveolar bone density is different in various implant placements of the mandible and maxilla. To knowledge of the alveolar bone density of each implant site is very important for a correct treatment. Cone beam computed tomography (CBCT) is essential for assessment of the alveolar bone density and optimal implant placement in complex reconstructions. http://dx.doi.org/10.1016/j.jbiotec.2016.05.240 Utilization of waste foods for the production of xanthan gum Demet Apaydin ∗ , Ahmet Sukru Demirci, Ibrahim Palabiyik, Tuncay Gumus Namik Kemal University, Faculty of Agriculture, Food Engineering Department, Tekirdag, Turkey E-mail address: [email protected] (D. Apaydin). Xanthan gum is a natural hetero-polysaccharide produced by strains of Xanthomonas campestris through aerobic fermentation. Due to its unique physical properties used in various industrial applications, the global demand for xanthan is increasing tremendously every year. To produce xanthan gum, a microbial exopolysaccharide, X. campestris needs several nutrients, including micronutrients and macronutrients such as carbon and nitrogen. Commercially available xanthan gum is relatively expensive due to glucose or sucrose being used as the sole carbon source. Therefore, using cheap and more abundant substrates can enhance the economy of the fermentative xanthan production process. Although the majority of the literature cites the use of glucose and sucrose as the preferred carbon sources, other alternative sources have been suggested, aimed principally to minimize the production costs of the gum. Various food wastes, consisting of complex
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polysaccharides like cellulose, hemi-cellulose, lignin and starch or simple carbohydrates have been tried as low cost substrates to reduce the raw material cost. These carbohydrates are often obtained from different raw materials that are intermediate or byproducts of various technologies, such as cheese whey, sugar cane and sugar beet molasses, olive mill wastewater, citrus waste, palmdate juice by-products, peach pulp, rice bran, cassava starch, corn steep liquor, tapioca pulp, coconut shell and some fruit wastes. In this review, preliminary information concerning waste foods utilized as a substrate to lower xanthan gum production costs, potential use of these wastes and the quality of gums obtained from these wastes was given. Acknowledgement: We thank The Scientific and Technological Research Council of Turkey (TUBITAK) for financial support (Project Number TOVAG-114O429). http://dx.doi.org/10.1016/j.jbiotec.2016.05.241 Effect of gibberellin acid on seedling growth of Eustoma grandiflorum under different light degrees and temperatures Xiaoyulong Chen College of Tobacco Science, Guizhou University, China E-mail address: [email protected]. Eustoma grandiflorum, originally from Northern America, is gaining popularity for ornamental horticulture production in Guizhou Province, China. Their seedlings sprayed with different concentrations of gibberellin acid were cultivated under different light degrees and temperatures in greenhouse to seek for the optimized conditions for E. grandiflorum growth. Their stem diameters, plant heights, and leaf areas were determined and compared to the control. The results showed that 200–800 mg/L gibberellin acid treatments could significantly increase the stem diameter and plant height in all light and temperature conditions. However, the promotion effect reduced with the increasing concentration of gibberellin acid. Within the treatments of same concentration level of gibberellin acid, the seedlings demonstrated the best development under the light degree of 1800 lx, and the temperature of 25 ◦ C. These observations conferred the potential of exploiting gibberellin acid as a renewable E. grandiflorum growth promotion elicitor in greenhouse. http://dx.doi.org/10.1016/j.jbiotec.2016.05.242 Vector construction for transformation of tobacco with a NAC-type transcription factor, TaNAC69-1 Ayten Eroglu 1,∗ , Mehmet Cengiz Baloglu 2 , Meral Yucel 3 1 Yuzuncu Yil University, Faculty of Science, Department of Biology, Van, Turkey 2 Kastamonu University, Department of Genetics and Bioengineering, Kastamonu, Turkey 3 Middle East Technical University, Department of Biological Sciences, Ankara, Turkey
E-mail address: [email protected] (A. Eroglu). NAC type transcription factors are a large family of plant transcription factors related to defense, development, biotic and abiotic
Alveolar bone density variation depending on position Vlad Cristian Dobrea 1,∗ , Anca Alexandra Popescu 1 , Mimi Dobrea 2 , Mihai Burlibasa 1 , Ion Radoi 2 , Agripina Sapcaliu 3 1 University of Medicine and Pharmacy, Carol Davila, Bucharest, Romania 2 University of Agronomical Sciences and Veterinary Medicine, Bucharest, Romania 3 Beekeeping Research and Development Institute of Bucharest, Romania
E-mail address: [email protected] (V.C. Dobrea). A dental implant stability is dependent on alveolar bone density, the placement of the implant on the maxilla or mandible, the cortical thickness, etc. The alveolar bone density in different sites of mandible and maxilla was performed in this study. Cone beam computed tomographic images from 54 patients (25 males and 29 females with age ranging between 20 and 50 years) were evaluated. The alveolar bone density was determined in Hounsfield Units (HU) at 2 mm thickness of cortical bone. The density of alveolar bone of mandible was greater (517.98 HU ± 10.29) than that of the maxilla (478.89 HU ± 113.53). The values of the alveolar bone density were lower to the incisors and increased towards the molars. The alveolar bone density inside of the implant was lower (398.61 HU ± 171.22 on maxilla and 510.71 HU ± 226.61 on mandible) than that outside (559.17 HU ± 214.99 on maxilla and 625.26 HU ± 186.98 on mandible). Our results are according to the data from the literature. The alveolar bone density is different in various implant placements of the mandible and maxilla. To knowledge of the alveolar bone density of each implant site is very important for a correct treatment. Cone beam computed tomography (CBCT) is essential for assessment of the alveolar bone density and optimal implant placement in complex reconstructions. http://dx.doi.org/10.1016/j.jbiotec.2016.05.240 Utilization of waste foods for the production of xanthan gum Demet Apaydin ∗ , Ahmet Sukru Demirci, Ibrahim Palabiyik, Tuncay Gumus Namik Kemal University, Faculty of Agriculture, Food Engineering Department, Tekirdag, Turkey E-mail address: [email protected] (D. Apaydin). Xanthan gum is a natural hetero-polysaccharide produced by strains of Xanthomonas campestris through aerobic fermentation. Due to its unique physical properties used in various industrial applications, the global demand for xanthan is increasing tremendously every year. To produce xanthan gum, a microbial exopolysaccharide, X. campestris needs several nutrients, including micronutrients and macronutrients such as carbon and nitrogen. Commercially available xanthan gum is relatively expensive due to glucose or sucrose being used as the sole carbon source. Therefore, using cheap and more abundant substrates can enhance the economy of the fermentative xanthan production process. Although the majority of the literature cites the use of glucose and sucrose as the preferred carbon sources, other alternative sources have been suggested, aimed principally to minimize the production costs of the gum. Various food wastes, consisting of complex
S65
polysaccharides like cellulose, hemi-cellulose, lignin and starch or simple carbohydrates have been tried as low cost substrates to reduce the raw material cost. These carbohydrates are often obtained from different raw materials that are intermediate or byproducts of various technologies, such as cheese whey, sugar cane and sugar beet molasses, olive mill wastewater, citrus waste, palmdate juice by-products, peach pulp, rice bran, cassava starch, corn steep liquor, tapioca pulp, coconut shell and some fruit wastes. In this review, preliminary information concerning waste foods utilized as a substrate to lower xanthan gum production costs, potential use of these wastes and the quality of gums obtained from these wastes was given. Acknowledgement: We thank The Scientific and Technological Research Council of Turkey (TUBITAK) for financial support (Project Number TOVAG-114O429). http://dx.doi.org/10.1016/j.jbiotec.2016.05.241 Effect of gibberellin acid on seedling growth of Eustoma grandiflorum under different light degrees and temperatures Xiaoyulong Chen College of Tobacco Science, Guizhou University, China E-mail address: [email protected]. Eustoma grandiflorum, originally from Northern America, is gaining popularity for ornamental horticulture production in Guizhou Province, China. Their seedlings sprayed with different concentrations of gibberellin acid were cultivated under different light degrees and temperatures in greenhouse to seek for the optimized conditions for E. grandiflorum growth. Their stem diameters, plant heights, and leaf areas were determined and compared to the control. The results showed that 200–800 mg/L gibberellin acid treatments could significantly increase the stem diameter and plant height in all light and temperature conditions. However, the promotion effect reduced with the increasing concentration of gibberellin acid. Within the treatments of same concentration level of gibberellin acid, the seedlings demonstrated the best development under the light degree of 1800 lx, and the temperature of 25 ◦ C. These observations conferred the potential of exploiting gibberellin acid as a renewable E. grandiflorum growth promotion elicitor in greenhouse. http://dx.doi.org/10.1016/j.jbiotec.2016.05.242 Vector construction for transformation of tobacco with a NAC-type transcription factor, TaNAC69-1 Ayten Eroglu 1,∗ , Mehmet Cengiz Baloglu 2 , Meral Yucel 3 1 Yuzuncu Yil University, Faculty of Science, Department of Biology, Van, Turkey 2 Kastamonu University, Department of Genetics and Bioengineering, Kastamonu, Turkey 3 Middle East Technical University, Department of Biological Sciences, Ankara, Turkey
E-mail address: [email protected] (A. Eroglu). NAC type transcription factors are a large family of plant transcription factors related to defense, development, biotic and abiotic